www.murata-ps.com DBE/DVE Series
Up to 300W Digital Fully Regulated Intermediate
DC-DC Bus Converter
Output (V) Current (A) Input (Vdc)
3.3 40
5 40 V2 = 36-75Vdc
12 25
Typical unit
FEATURES PRODUCT OVERVIEW
Murata Power Solutions is introducing the first in TNV standard for input Voltage with a 36–75Vin
Advanced Bus Converter industry standard
a series of digitally controlled DC-DC converters specified Vin range and was designed to provide
eighth-brick with digital PMBus interface
that are based on a 32-bit ARM processor. The payload power in distributed power architectures.
Optional standard five pin Eighth-brick
DBE series provides a fully regulated, digitally The DBE offers a “droop” load sharing option for
High efficiency
controlled DC output in an eighth-brick format that paralleling modules in the most demanding, power
will support the evolving, Advanced Bus Converter hungry applications or to provide redundancy in
Fast dynamic response
(ABC) industry standard footprint for isolated board high reliability applications. The converter also
± 1% Vout Setting accuracy
mounted power modules. The DBE series supports offers high input to output isolation of 2250 VDC as
2250 Vdc input to output isolation voltage
advances in power conversion technology including required for Power over Ethernet (PoE) applications.
a digital interface supporting the PMBus protocol The DBE series is suitable for applications covering
Optional baseplate (B option)
for communications to power modules. MicroTCA, servers and storage applications, net-
Voltage droop load sharing for parallel operation
The DBE series products are eighth-brick working equipment, Power over Ethernet (PoE), fan
Certified to UL/EN/IEC 60950-1, CAN/CSA-C22.2
DC-DC converter with a digital interface support- trays, wireless networks, wireless pre-amplifiers,
No. 60950-1, 2nd Edition, safety approvals and
ing the PMBus standard for communicating with industrial and test equipment along with other
EN55022/CISPR22 standards
power devices. The DBE series also supports the applications requiring a regulated 12V and 5V.
Power Management (PMBus Options) Applications
Configurable soft-start/stop Distributed power architectures
Configurable output voltage (Vout) and voltage Intermediate bus voltage applications
margins (Margin low and Margin high)
Servers and storage applications
Configurable protection limits for OVP, input over
Network equipment
voltage, input under voltage, over current, on/
off, and temperature
Module Status monitor Vout, Iout, Vin, Temp,
Power good, and On/Off
System status monitor (Vout, Iout, Vin and Temp
over time)
PM
For full details go to
www.murata-ps.com/rohs
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SDC_DBE Series.A06∆ Page 1 of 34
DBE/DVE Series
Up to 300W Digital Fully Regulated Intermediate
DC-DC Bus Converter
PERFORMANCE SPECIFICATIONS SUMMARY AND ORDERING GUIDE ➀
Output Input
Ripple & Noise Open Frame Package
Total IIN, min. IIN, full
(mVp-p) Regulation (max.) Efficiency Dimensions (max.)
VOUT IOUT Power VIN Nom. Range load load
Root Model (V) (A, max) (W) Typ. Max. Line (%) Load (%) (V) (V) (mA) (A) Min. Typ. (inches, max.) (mm)
DBE0340V2 3.3 40 132 60 100 ±0.3 ±0.25 48 36-75 90 2.96 91% 92.5% 2.3x0.9x0.45 58.4x22.9x11.4
DBE0240V2 5 40 200 50 100 ±0.25 ±0.25 48 36-75 90 4.46 93% 94% 2.3x0.9x0.45 58.4x22.9x11.4
DBE0125V2 12 25 300 80 150 ±0.25 ±0.25 48 36-75 110 9.25 93% 94.6% 2.3x0.9x0.46 58.4x22.9x11.7
DVE0340V2 ➁ 3.3 40 132 60 100 ±0.3 ±0.25 48 36-75 90 2.96 91% 92.5% 2.3x0.9x0.45 58.4x22.9x11.4
5 40 200 50 100 ±0.25 ±0.25 48 36-75 90 4.46 93% 94% 2.3x0.9x0.45 58.4x22.9x11.4
DVE0240V2 ➁
DVE0125V2 ➁ 12 25 300 80 150 ±0.25 ±0.25 48 36-75 110 9.25 93% 94.6% 2.3x0.9x0.46 58.4x22.9x11.7
➀ Typical at TA = +25°C under nominal line voltage and full-load conditions. All models are speci-
fied with an external 1μF multi-layer ceramic and 10μF capacitors across their output pins.
➁ DVE models do not have the PMBus feature.
DIGITAL CONTROL BRICK PART NUMBER FORMAT
Description Part Number Structure Definition and Options
Product Family D X DB = Full Featured Digital Bus converter, DV = NO PMBus, NO Sense & Trim Pins
Form Factor E E = Eighth Brick
0 1 01 = 12Vout, 02 = 5Vout, 03=3.3Vout (Without PMBus Vout cannot be changed)
Vout ➀
Output Current 2 5 Max Iout in Amps
Vin Range V 2 V2 = 36-75V
N N = Negative, P = Positive
Logic ➀
x 1 = 0.110" (cut), 2 = 0.145" (cut). Omit for standard shown in the mechanical drawings
Pin Length ➁
Mechanical Configuration B B = Baseplate, Omit for Open Frame (Standard Configuration)
Load Sharing S
S = Load Sharing, Omit for Standard (Standard Configuration) ➃
R R = MSL-3 compliant Packaging, Blank for Standard Configuration / Packaging
Paste In Hole (PIH) Processable ➂
Specific Customer Configuration x x Customer Code; Omit for Standard
RoHS C RoHS 6/6 Compliant
➀ PMBus Configurable
➁ Minimum order quantity is required. Samples available with standard pin length only.
➂ PIH parts are special order only.
➃ Load Sharing is not available on the 3.3Vout and 5Vout models.
Note: Some model number combinations may not be available. See website or contact your local Murata sales representative.
Part Number Examples
DBE0125V2NBSC = Full Featured Digital 1/8th Brick, 12Vout, 25A, 36-75Vin, Negative logic, Baseplate, Load Sharing, RoHS 6/6 compliant
DVE0240V2NBC = No PMBus, No Sense & Trim 1/8th Brick, 5Vout, 40A, 36-75Vin, Negative logic, Baseplate, RoHS 6/6 compliant
EVALUATION BOARD AVAILABLE FROM MURATA POWER SOLUTIONS
Part Number Application Note USB Adaptor Part Number GUI Software Application Note
MPS-TD001 www.murata-ps.com/data/apnotes/dcan-63.pdf MPS-AD001 www.murata-ps.com/data/apnotes/dcan-63.pdf
Contact your local Murata sales representative for ordering details.
www.murata-ps.com/support
SDC_DBE Series.A06∆ Page 2 of 34
DBE/DVE Series
Up to 300W Digital Fully Regulated Intermediate
DC-DC Bus Converter
FUNCTIONAL SPECIFICATIONS, DBE0340 (3.3V, 40A)
ABSOLUTE MAXIMUM RATINGS Minimum Typical/Nominal Maximum Units
Conditions ➀
Input Voltage, Continuous 0 80 Vdc
Input Voltage, Transient 100 mS max. duration 100 Vdc
Isolation Voltage Input to output, continuous 2250 Vdc
Input Reverse Polarity None, install external fuse None
On/Off Remote Control Power on, referred to -Vin 0 13.50 Vdc
Output Power 0 132 W
Current-limited, no damage, short-circuit
Output Current 0 40 A
protected
Storage Temperature Range Vin = Zero (no power) -55 125 °C
Absolute maximums are stress ratings. Exposure of devices to greater than any of these conditions may adversely affect long-term reliability. Proper operation under conditions other than those
listed in the Performance/Functional Specifications Table is not implied nor recommended.
INPUT
Operating voltage range (V2) 36 48 75 Vdc
Start-up threshold (Default, Conf via PMBUS) 32 34 36 Vdc
Undervoltage shutdown (Default, Conf via PMBUS) 30 32 34 Vdc
Internal Filter Type Pi
External Input Fuse (Recommended) 10 A
Input current
Full Load Conditions Vin = nominal 2.96 3.02 A
Low Line input current Vin = minimum 3.92 4.03 A
2
Inrush Transient Vin = 48V. 0.05 A -Sec.
Short Circuit input current 0.05 0.10 A
No Load input current Iout = minimum, unit=ON 90 120 mA
Shut-Down input currrent(Off, UV, OT) 20 40 mA
GENERAL and SAFETY
Vin=48V, full load 91 92.5 %
Efficiency
Vin=min. 91 92 %
Input to output, continuous 2250 Vdc
Isolation Voltage Input to Baseplate, continuous 1500 Vdc
Output to Baseplage, continuous 1500 Vdc
Insulation Safety Rating Functional
Isolation Resistance 10 MΩ
Isolation Capacitance 1000 pF
Certified to UL-60950-1, CSA-C22.2 No.60950-
Safety Yes
1, IEC/EN60950-1, 2nd edition
Per Telcordia SR-332, issue 1, class 3, ground
3
Calculated MTBF 2200 Hours x 10
fixed, Tcase=+25°C
DYNAMIC CHARACTERISTICS
Fixed Switching Frequency 180 KHz
(Default, Conf via PMBUS)
Turn on Time 50 mS
Vin On to Vout regulated
Ramp-up time Remote On to Vout regulated 30 mS
Vout Rise Time Conf via PMBUS, from 0% to 100% 9 15 20 mS
Vout Fall Time Conf via PMBUS, from 100% to 0% 7 10 13 mS
25-75-25% load step to 1% error band, 1A/uS,
Dynamic Load Response 100 200 µSec
with 470uF output external Cap
Dynamic Load Peak Deviation same as above 500 700 mVdc
FEATURES and OPTIONS
Remote On/Off Control
Primary On/Off control (designed to be driving with an open collector logic, Voltages referenced to -Vin)
“P” suffix:
Positive Logic, ON state ON = pin open or external voltage 3.5 13.50 V
Positive Logic, OFF state OFF = ground pin or external voltage 0 0.80 V
Control Current open collector/drain 1 2 mA
“N” suffix:
Negative Logic, ON state ON = pin open or external voltage -0.1 0.80 V
Negative Logic, OFF state OFF = ground pin or external voltage 3.5 13.50 V
Control Current open collector/drain 1 2 mA
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SDC_DBE Series.A06∆ Page 3 of 34
DBE/DVE Series
Up to 300W Digital Fully Regulated Intermediate
DC-DC Bus Converter
FUNCTIONAL SPECIFICATIONS, DBE0340 (3.3V, 40A, CONT.)
OUTPUT Minimum Typical/Nominal Maximum Units
Conditions ➀
Total Output Power 0 132 133.32 W
Voltage
Setting Accuracy At 100% load, no trim 3.27 3.3 3.33 Vdc
Overvoltage Protection Conf via PMBUS, Magnetic Feedback 4.0 4.5 5.0 Vdc
Voltage Droop (Conf via PMBUS) 0 MΩ
Current
Output Current Range 0 40 40 A
Minimum Load No minimum load
Current Limit Inception ➁ 90% of Vnom., after warmup, Conf via PMBUS 44 49 53 A
Short Circuit
Short Circuit Current Hiccup technique, autorecovery within 1% of Vout 2.5 3.0 A
Short Circuit Duration
Output shorted to ground, no damage Continuous
(remove short for recovery)
Short circuit protection method Hiccup current limiting Non-latching
Regulation ➂
Line Regulation Vin=min. to max., Vout=nom., full load ±0.3 %
Load Regulation Iout=min. to max., Vin=nom. ±0.25 %
5 Hz- 20 MHz BW, Cout=1µF MLCC
Ripple and Noise 100 mV pk-pk
paralleled with 10µF
Temperature Coefficient At all outputs 0.02 % of Vnom./°C
Output Capacitance Low ESR 220 7500 μF
Power Good—Negative logic (Conf via PMBUS)
Power good high stage voltage 2.4 3.6 Vdc
Power good low stage voltage -0.1 0.40 Vdc
Out voltage for power good off triggering Conf via PMBUS 2 2.3 2.5 Vdc
Out Voltage for power good on triggering Conf via PMBUS 2.6 2.8 3 Vdc
PMBus
PMBUS GENERAL
PMBUS REV. 1.2. SMBALERT# is supported. PEC is supported. Linear data format used.
Bus speed 400 Khz
Logic high input 2 3.3 Vdc
Logic low input -0.1 0.8 Vdc
Logic high output 2.4 3.6 Vdc
Logic low output -0.1 0.4 Vdc
PMBUS ADDRESSING
If the calculated PMBus address is 0d, 11d or 12d, SA0 or SA1 lefts open, default PMBus address 119d is assigned instead. PMBUS address = 8*SA0 + SA1. SA0/SA1 value VS
resistor connected to GND.
0 10 kΩ
1 22 kΩ
2 33 kΩ
3 47 kΩ
4 68 kΩ
5 100 kΩ
6 150 kΩ
7 220 kΩ
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SDC_DBE Series.A06∆ Page 4 of 34
DBE/DVE Series
Up to 300W Digital Fully Regulated Intermediate
DC-DC Bus Converter
FUNCTIONAL SPECIFICATIONS, DBE0340 (3.3V, 40A, CONT.)
PMBus Minimum Typical/Nominal Maximum Units
Conditions ➀
PMBus MONITORING ACCURACY
VIN_READ -2 2 %
VOUT_READ -2 2 %
IOUT_READ (> = 10A) -5 5 %
IOUT_READ (<10A) -1 1 A
TEMP_READ -5 5 °C
DIGITAL INTERFACE SPECIFICATIONS (PMBUS MONITORING & FUNCTIONAL DESCRIPTION)
Fault Protection Specifications
Output Voltage, Over Voltage protection, OVP Factory default 4.5 V
VOUT_OV_FAULT_LIMIT, Configurable via PMBus >VOUT_OV_WARM_LIMIT 4.0 5.0 V
Fault response time 200 µS
Input Voltage, Input Over Voltage Protection Factory default 80 V
Setpoint accuracy -2 2 %
VIN_OV_FAULT_LIMIT (Configurable via
>VIN_OV_WARM_LIMIT 34 110 V
PMBus) ➃
Delay 300 µS
Input Voltage, Input Under Voltage Protection,
Factory default 32 V
UVLV
Setpoint accuracy -2 2 %
VIN_FAULT_LIMIT_LIMIT(Configurable via IOUT_OC_WARN_LIMT 0 50 A
PMBus) ➃
Fault response time 200 µS
Over Temperature Protection, OTP OT_FAULT_LIMIT (factory default) 125 °C
OT_FAULT_LIMIT (Configurable via PMBus) ➃ >OT_WARM_LIMIT 0 150 °C
OTP accuracy (factory default) 5 5 °C
Fault response time 300 µS
MECHANICAL (Through Hole Models)
Outline Dimensions—open frame 2.3x0.9x0.45 Inches
WxLxH 58.4x22.9x11.4 mm
Outline Dimensions—with baseplate 2.3x0.9x0.52 Inches
WxLxH 58.4x22.9x13.2 mm
Weight Open frame 34 Grams
With baseplate 45 Grams
Through Hole Pin Diameter 0.04 & 0.062 Inches
1.016 & 1.575 mm
Through Hole Pin Material Copper alloy
TH Pin Plating Metal and Thickness Nickel subplate 50 µ-inches
Gold overplate 5 µ-inches
ENVIRONMENTAL
Operating Ambient Temperature Range with derating -40 85 °C
Operating Baseplate Temperature -40 110 °C
Storage Temperature Vin = Zero (no power) -55 125 °C
Thermal Protection/Shutdown Measured at hotspot 125 °C
Electromagnetic Interference
External filter required B Class
Conducted, EN55022/CISPR22
RoHS rating RoHS-6
Notes
➀ Typical at TA = +25°C under nominal line voltage and full-load conditions. All models are speci- ➂ Regulation specifications describe the output voltage changes as the line voltage or load current
fied with an external 1μF multi-layer ceramic and 10μF capacitors across their output pins. is varied from its nominal or midpoint value to either extreme.
➁ Over-current protection is non-latching with auto recovery (Hiccup)
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SDC_DBE Series.A06∆ Page 5 of 34
DBE/DVE Series
Up to 300W Digital Fully Regulated Intermediate
DC-DC Bus Converter
FUNCTIONAL SPECIFICATIONS, DBE0240 (5V, 40A)
ABSOLUTE MAXIMUM RATINGS Minimum Typical/Nominal Maximum Units
Conditions ➀
Input Voltage, Continuous 0 80 Vdc
Input Voltage, Transient 100 mS max. duration 100 Vdc
Isolation Voltage Input to output, continuous 2250 Vdc
Input Reverse Polarity None, install external fuse None
On/Off Remote Control Power on, referred to -Vin 0 13.50 Vdc
Output Power 0 200 W
Current-limited, no damage, short-circuit
Output Current 0 40 A
protected
Storage Temperature Range Vin = Zero (no power) -55 125 °C
Absolute maximums are stress ratings. Exposure of devices to greater than any of these conditions may adversely affect long-term reliability. Proper operation under conditions other than those
listed in the Performance/Functional Specifications Table is not implied nor recommended.
INPUT
Operating voltage range (V2) 36 48 75 Vdc
Start-up threshold (Default, Conf via PMBUS) 32 34 36 Vdc
Undervoltage shutdown (Default, Conf via PMBUS) 30 32 34 Vdc
Internal Filter Type Pi
External Input Fuse (Recommended) 10 A
Input current
Full Load Conditions Vin = nominal 4.43 4.53 A
Low Line input current Vin = minimum 5.94 6.03 A
2
Inrush Transient Vin = 48V. 0.05 A -Sec.
Short Circuit input current 0.05 0.10 A
No Load input current Iout = minimum, unit=ON 90 120 mA
Shut-Down input currrent(Off, UV, OT) 20 40 mA
GENERAL and SAFETY
Vin=48V, full load 93 94 %
Efficiency
Vin=min. 93 93.5 %
Input to output, continuous 2250 Vdc
Isolation Voltage Input to Baseplate, continuous 1500 Vdc
Output to Baseplage, continuous 1500 Vdc
Insulation Safety Rating Functional
Isolation Resistance 10 MΩ
Isolation Capacitance 1000 pF
Certified to UL-60950-1, CSA-C22.2 No.60950-
Safety Yes
1, IEC/EN60950-1, 2nd edition
Per Telcordia SR-332, issue 1, class 3, ground
3
Calculated MTBF 2200 Hours x 10
fixed, Tcase=+25°C
DYNAMIC CHARACTERISTICS
Fixed Switching Frequency 180 KHz
(Default, Conf via PMBUS)
Turn on Time 50 mS
Vin On to Vout regulated
Ramp-up time Remote On to Vout regulated 30 mS
Vout Rise Time Conf via PMBUS, from 0% to 100% 9 15 20 mS
Vout Fall Time Conf via PMBUS, from 100% to 0% 7 10 13 mS
25-75-25% load step to 1% error band, 1A/uS,
Dynamic Load Response 100 200 µSec
with 470uF output external Cap
Dynamic Load Peak Deviation same as above 500 700 mVdc
FEATURES and OPTIONS
Remote On/Off Control
Primary On/Off control (designed to be driving with an open collector logic, Voltages referenced to -Vin)
“P” suffix:
Positive Logic, ON state ON = pin open or external voltage 3.5 13.50 V
Positive Logic, OFF state OFF = ground pin or external voltage 0 0.80 V
Control Current open collector/drain 1 2 mA
“N” suffix:
Negative Logic, ON state ON = pin open or external voltage -0.1 0.80 V
Negative Logic, OFF state OFF = ground pin or external voltage 3.5 13.50 V
Control Current open collector/drain 1 2 mA
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SDC_DBE Series.A06∆ Page 6 of 34
DBE/DVE Series
Up to 300W Digital Fully Regulated Intermediate
DC-DC Bus Converter
FUNCTIONAL SPECIFICATIONS, DBE0240 (5V, 40A, CONT.)
OUTPUT Minimum Typical/Nominal Maximum Units
Conditions ➀
Total Output Power 0 200 202 W
Voltage
Setting Accuracy At 100% load, no trim 4.95 5 5.05 Vdc
Overvoltage Protection Conf via PMBUS, Magnetic Feedback 5.6 6 7 Vdc
Voltage Droop (Conf via PMBUS) 0 MΩ
Current
Output Current Range 0 40 40 A
Minimum Load No minimum load
Current Limit Inception ➁ 90% of Vnom., after warmup, Conf via PMBUS 44 49 53 A
Short Circuit
Short Circuit Current Hiccup technique, autorecovery within 1% of Vout 2.5 3.0 A
Short Circuit Duration
Output shorted to ground, no damage Continuous
(remove short for recovery)
Short circuit protection method Hiccup current limiting Non-latching
Regulation ➂
Line Regulation Vin=min. to max., Vout=nom., full load ±0.3 %
Load Regulation Iout=min. to max., Vin=nom. ±0.25 %
5 Hz- 20 MHz BW, Cout=1µF MLCC
Ripple and Noise 100 mV pk-pk
paralleled with 10µF
Temperature Coefficient At all outputs 0.02 % of Vnom./°C
Output Capacitance Low ESR 220 7500 μF
Power Good—Negative logic (Conf via PMBUS)
Power good high stage voltage 2.4 3.6 Vdc
Power good low stage voltage -0.1 0.40 Vdc
Out voltage for power good off triggering Conf via PMBUS 3 3.5 4 Vdc
Out Voltage for power good on triggering Conf via PMBUS 3.75 4.25 4.75 Vdc
PMBus
PMBUS GENERAL
PMBUS REV. 1.2. SMBALERT# is supported. PEC is supported. Linear data format used.
Bus speed 400 Khz
Logic high input 2 3.3 Vdc
Logic low input -0.1 0.8 Vdc
Logic high output 2.4 3.6 Vdc
Logic low output -0.1 0.4 Vdc
PMBUS ADDRESSING
If the calculated PMBus address is 0d, 11d or 12d, SA0 or SA1 lefts open, default PMBus address 119d is assigned instead. PMBUS address = 8*SA0 + SA1. SA0/SA1 value VS
resistor connected to GND.
0 10 kΩ
1 22 kΩ
2 33 kΩ
3 47 kΩ
4 68 kΩ
5 100 kΩ
6 150 kΩ
7 220 kΩ
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SDC_DBE Series.A06∆ Page 7 of 34
DBE/DVE Series
Up to 300W Digital Fully Regulated Intermediate
DC-DC Bus Converter
FUNCTIONAL SPECIFICATIONS, DBE0240 (5V, 40A, CONT.)
PMBus Minimum Typical/Nominal Maximum Units
Conditions ➀
PMBus MONITORING ACCURACY
VIN_READ -2 2 %
VOUT_READ -2 2 %
IOUT_READ (> = 10A) -5 5 %
IOUT_READ (<10A) -1 1 A
TEMP_READ -5 5 °C
DIGITAL INTERFACE SPECIFICATIONS (PMBUS MONITORING & FUNCTIONAL DESCRIPTION)
Fault Protection Specifications
Output Voltage, Over Voltage protection, OVP Factory default 6 V
VOUT_OV_FAULT_LIMIT, Configurable via PMBus >VOUT_OV_WARM_LIMIT 5.6 7 V
Fault response time 200 µS
Input Voltage, Input Over Voltage Protection Factory default 80 V
Setpoint accuracy -2 2 %
VIN_OV_FAULT_LIMIT (Configurable via
>VIN_OV_WARM_LIMIT 34 110 V
PMBus) ➃
Delay 300 µS
Input Voltage, Input Under Voltage Protection,
Factory default 32 V
UVLV
Setpoint accuracy -2 2 %
VIN_FAULT_LIMIT_LIMIT(Configurable via IOUT_OC_WARN_LIMT 0 50 A
PMBus) ➃
Fault response time 200 µS
Over Temperature Protection, OTP OT_FAULT_LIMIT (factory default) 125 °C
OT_FAULT_LIMIT (Configurable via PMBus) ➃ >OT_WARM_LIMIT 0 150 °C
OTP accuracy (factory default) 5 5 °C
Fault response time 300 µS
MECHANICAL (Through Hole Models)
Outline Dimensions—open frame 2.3x0.9x0.45 Inches
WxLxH 58.4x22.9x11.4 mm
Outline Dimensions—with baseplate 2.3x0.9x0.52 Inches
WxLxH 58.4x22.9x13.2 mm
Weight Open frame 34 Grams
With baseplate 45 Grams
Through Hole Pin Diameter 0.04 & 0.062 Inches
1.016 & 1.575 mm
Through Hole Pin Material Copper alloy
TH Pin Plating Metal and Thickness Nickel subplate 50 µ-inches
Gold overplate 5 µ-inches
ENVIRONMENTAL
Operating Ambient Temperature Range with derating -40 85 °C
Operating Baseplate Temperature -40 110 °C
Storage Temperature Vin = Zero (no power) -55 125 °C
Thermal Protection/Shutdown Measured at hotspot 125 °C
Electromagnetic Interference
External filter required B Class
Conducted, EN55022/CISPR22
RoHS rating RoHS-6
Notes
➀ Typical at TA = +25°C under nominal line voltage and full-load conditions. All models are speci- ➂ Regulation specifications describe the output voltage changes as the line voltage or load current
fied with an external 1μF multi-layer ceramic and 10μF capacitors across their output pins. is varied from its nominal or midpoint value to either extreme.
➁ Over-current protection is non-latching with auto recovery (Hiccup)
www.murata-ps.com/support
SDC_DBE Series.A06∆ Page 8 of 34
DBE/DVE Series
Up to 300W Digital Fully Regulated Intermediate
DC-DC Bus Converter
TYPICAL PERFORMANCE DATA, DBE0240 (5V, 40A)
Efficiency vs. Load Current @ 25°C, with baseplate
100
95
90
Vin = 60V
85
Vin = 48V
Vin = 38V
80
75
70
0 10 20 30 40 50
Load Current (A)
On/Off Enable Start-up (Vin = 48V, Vout = nom, Iout = 40A, Cload = 10000µf, Ta = +25°C) Start-up Delay (Vin = 48V, Vout = nom, Iout = 40A Cload = 10000µf, Ta = +25°C)
ch2 = Vout, ch4 = Enable ch1 = Vin, ch2 = Vout
On/Off Enable Start-up (Vin = 48V, Vout = nom, Iout = 40A, Cload = 0, Ta = +25°C) Start-up Delay (Vin = 48V, Vout = nom, Iout = 40A, Cload = 0, Ta = +25°C)ch1 = Vin,
ch2 = Vout, ch4 = Enable ch2 = Vout
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SDC_DBE Series.A06∆ Page 9 of 34
Efficiency (%)
DBE/DVE Series
Up to 300W Digital Fully Regulated Intermediate
DC-DC Bus Converter
DBE0240 (5V, 40A) PERFORMANCE DATA: TEMPERATURE DERATING WITH BASEPLATE
Transverse Longitudinal
Maximum Current Temperature Derating at sea level Maximum Current Temperature Derating at sea level
(Vin = 36V, airflow from Vin- to Vin+) (Vin = 36V, airflow from Vin to Vout)
45 45
40 40
35 35
0.5 m/s (100 LFM)
0.5 m/s (100 LFM)
30 30
1.0 m/s (200 LFM)
1.0 m/s (200 LFM)
1.5 m/s (300 LFM)
1.5 m/s (300 LFM)
25 25
2.0 m/s (400 LFM)
2.0 m/s (400 LFM)
20 20
15 15
10 10
5 5
0 0
35 40 45 50 55 60 65 70 75 80 85 35 40 45 50 55 60 65 70 75 80 85
Ambient Temperature (°C) Ambient Temperature (°C)
Maximum Current Temperature Derating at sea level Maximum Current Temperature Derating at sea level
(Vin = 48V, airflow from Vin- to Vin+) (Vin = 48V, airflow from Vin to Vout)
45 45
40 40
35 35
0.5 m/s (100 LFM)
30 0.5 m/s (100 LFM) 30
1.0 m/s (200 LFM)
1.0 m/s (200 LFM)
1.5 m/s (300 LFM)
1.5 m/s (300 LFM)
25 25
2.0 m/s (400 LFM)
2.0 m/s (400 LFM)
20 20
15 15
10 10
5 5
0 0
35 40 45 50 55 60 65 70 75 80 85 35 40 45 50 55 60 65 70 75 80 85
Ambient Temperature (°C) Ambient Temperature (°C)
Maximum Current Temperature Derating at sea level Maximum Current Temperature Derating at sea level
(Vin = 75V, airflow from Vin- to Vin+) (Vin = 75V, airflow from Vin- to Vin+)
45 45
40 40
35 35
30 30
0.5 m/s (100 LFM)
0.5 m/s (100 LFM)
1.0 m/s (200 LFM)
1.0 m/s (200 LFM)
25 25
1.5 m/s (300 LFM)
1.5 m/s (300 LFM)
2.0 m/s (400 LFM)
2.0 m/s (400 LFM)
20 20
15 15
10 10
5 5
0 0
35 40 45 50 55 60 65 70 75 80 85 35 40 45 50 55 60 65 70 75 80 85
Ambient Temperature (°C) Ambient Temperature (°C)
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SDC_DBE Series.A06∆ Page 10 of 34
Output Current (Amps) Output Current (Amps) Output Current (Amps)
Output Current (Amps) Output Current (Amps) Output Current (Amps)
DBE/DVE Series
Up to 300W Digital Fully Regulated Intermediate
DC-DC Bus Converter
DBE0240 (5V, 40A) PERFORMANCE DATA: TEMPERATURE DERATING WITHOUT BASEPLATE
Transverse Longitudinal
Maximum Current Temperature Derating at sea level Maximum Current Temperature Derating at sea level
(Vin = 36V, airflow from Vin- to Vin+) (Vin = 36V, airflow from Vin to Vout)
45 45
40 40
35 35
30 30
0.5 m/s (100 LFM)
1.0 m/s (200 LFM)
0.5 m/s (100 LFM)
25 25
1.5 m/s (300 LFM)
1.0 m/s (200 LFM)
2.0 m/s (400 LFM)
1.5 m/s (300 LFM)
20 20
2.0 m/s (400 LFM)
15 15
10 10
5 5
0 0
35 40 45 50 55 60 65 70 75 80 85 35 40 45 50 55 60 65 70 75 80 85
Ambient Temperature (°C) Ambient Temperature (°C)
Maximum Current Temperature Derating at sea level Maximum Current Temperature Derating at sea level
(Vin = 48V, airflow from Vin- to Vin+) (Vin = 48V, airflow from Vin to Vout)
45 45
40 40
35 35
30 30
0.5 m/s (100 LFM)
1.0 m/s (200 LFM)
25 25
0.5 m/s (100 LFM)
1.5 m/s (300 LFM)
1.0 m/s (200 LFM)
2.0 m/s (400 LFM)
1.5 m/s (300 LFM)
20 20
2.0 m/s (400 LFM)
15 15
10 10
5 5
0 0
35 40 45 50 55 60 65 70 75 80 85 35 40 45 50 55 60 65 70 75 80 85
Ambient Temperature (°C) Ambient Temperature (°C)
Maximum Current Temperature Derating at sea level Maximum Current Temperature Derating at sea level
(Vin = 75V, airflow from Vin- to Vin+) (Vin = 75V, airflow from Vin to Vout)
45 45
40 40
35 35
30 30
25 25
0.5 m/s (100 LFM)
1.0 m/s (200 LFM)
20 20
0.5 m/s (100 LFM)
1.5 m/s (300 LFM)
1.0 m/s (200 LFM)
2.0 m/s (400 LFM)
1.5 m/s (300 LFM)
15 15
2.0 m/s (400 LFM)
10 10
5 5
0 0
35 40 45 50 55 60 65 70 75 80 85 35 40 45 50 55 60 65 70 75 80 85
Ambient Temperature (°C) Ambient Temperature (°C)
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SDC_DBE Series.A06∆ Page 11 of 34
Output Current (Amps) Output Current (Amps) Output Current (Amps)
Output Current (Amps) Output Current (Amps) Output Current (Amps)
DBE/DVE Series
Up to 300W Digital Fully Regulated Intermediate
DC-DC Bus Converter
FUNCTIONAL SPECIFICATIONS, DBE0125 (12V, 25A)
ABSOLUTE MAXIMUM RATINGS Minimum Typical/Nominal Maximum Units
Conditions ➀
Input Voltage, Continuous 0 80 Vdc
Input Voltage, Transient 100 mS max. duration 100 Vdc
Isolation Voltage Input to output, continuous 2250 Vdc
Input Reverse Polarity None, install external fuse None
On/Off Remote Control Power on, referred to -Vin 0 13.50 Vdc
Output Power 0 306 W
Current-limited, no damage, short-circuit
Output Current 0 25 A
protected
Storage Temperature Range Vin = Zero (no power) -55 125 °C
Absolute maximums are stress ratings. Exposure of devices to greater than any of these conditions may adversely affect long-term reliability. Proper operation under conditions other than those
listed in the Performance/Functional Specifications Table is not implied nor recommended.
INPUT
Operating voltage range 36 48 75 Vdc
Start-up threshold (Default, Conf via PMBUS) 32 34 36 Vdc
Undervoltage shutdown (Default, Conf via PMBUS) 30 32 34 Vdc
Internal Filter Type Pi
External Input fuse 20 A
Input current
Full Load Conditions Vin = nominal 9.25 9.6 A
Low Line input current Vin = minimum 12.28 12.8 A
2
Inrush Transient Vin = 48V. 0.05 A -Sec.
Short Circuit input current 0.03 0.10 A
No Load input current Iout = minimum, unit=ON 110 150 mA
Shut-Down input currrent (Off, UV, OT) 20 40 mA
Measured at the input of module with a simu-
lated source impedance of 4.7µH, 220µF,
Back Ripple Current 2000 3000 mAp-p
100V, across source, 33µF, 100V external
capacitors across input pins
Back Ripple Current (no filtering) 620 1000 mAp-p
GENERAL and SAFETY
Vin=48V, full load 93 94.6 %
Efficiency
Vin=min. 93 95 %
Input to output, continuous 2250 Vdc
Isolation Voltage Input to Baseplate, continuous 1500 Vdc
Output to Baseplage, continuous 1500 Vdc
Insulation Safety Rating Functional
Isolation Resistance 10 MΩ
Isolation Capacitance 1500 pF
Certified to UL-60950-1, CSA-C22.2 No.60950-
Safety Yes
1, IEC/EN60950-1, 2nd edition
Per Telcordia SR-332, issue 1, class 3, ground
3
Calculated MTBF 1800 Hours x 10
fixed, Tcase=+25°C
DYNAMIC CHARACTERISTICS
SWITCHING FREQUENCY (Configurable via
180 kHz
PMBUS)
TURN ON TIME (Default, Configurable via PMBUS)
Vin On to Vout Regulated (100% Vout) 60 ms
Remote On to Vout Regulated (100% Vout) 30 ms
Vin Start up delay time 25 40 ms
Enable Start up delay time 10 ms
VOUT RISE TIME (Default, Configurable via PMBUS)
From 0%~100% 16 20 23 ms
From 10%~90% 12.8 16 18.4 ms
VOUT FALL TIME OF REGULATED OFF (Default, Configurable via PMBUS)
From 100%~0% 16 20 23 ms
From 90%~10% 12.8 16 18.4 ms
Dynamic Load Response 25-75-25% load step to 1% error band 150 300 µSec
Dynamic Load Peak Deviation same as above 400 500 mVdc
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SDC_DBE Series.A06∆ Page 12 of 34
DBE/DVE Series
Up to 300W Digital Fully Regulated Intermediate
DC-DC Bus Converter
FUNCTIONAL SPECIFICATIONS, DBE0125 (12V, 25A, CONT.)
FEATURES and OPTIONS Conditions ➀ Minimum Typical/Nominal Maximum Units
Remote On/Off Control
Primary On/Off control (designed to be driving with an open collector logic, Voltages referenced to -Vin)
“P” suffix:
Positive Logic, ON state ON = pin open or external voltage 3.5 13.5 V
Positive Logic, OFF state OFF = ground pin or external voltage 0 0.8 V
Control Current open collector/drain 1 2 mA
“N” suffix:
Negative Logic, ON state ON = pin open or external voltage -0.1 0.8 V
Negative Logic, OFF state OFF = ground pin or external voltage 3.5 13.5 V
Control Current open collector/drain 1 2 mA
Secondary On/Off control (Pull up to 3.3V internally, Voltages referenced to -Vout)
“P” suffix:
Positive Logic, ON state ON = pin open or external voltage 1.5 3.3 V
Positive Logic, OFF state OFF = ground pin or external voltage 0 0.8 V
Control Current open collector/drain 1 2 mA
“N” suffix:
Negative Logic, ON state ON = pin open or external voltage 0 0.8 V
Negative Logic, OFF state OFF = ground pin or external voltage 1.5 3.3 V
Control Current open collector/drain 1 2 mA
Sense pins connected externally to respective
Remote Sense Compliance 10 %
Vout pins
OUTPUT
Total Output Power 0 300 306 W
Voltage
Setting Accuracy At 100% load, no trim 11.76 12 12.24 Vdc
Overvoltage Protection Conf via PMBUS, Magnetic Feedback 13.8 14.4 15.6 Vdc
without "S" suffix 0 MΩ
Voltage Droop (Conf via PMBUS)
with "S" suffix 10 MΩ
Current
Output Current Range 0 25 A
Minimum Load No minimum load
98% of Vnom., after warmup, Conf via PMBUS 27 29 31 A
Current Limit Inception ➁
Short Circuit
Short Circuit Current Hiccup technique, autorecovery within 1% of Vout 0.4 1 A
Short Circuit Duration
Output shorted to ground, no damage Continuous
(remove short for recovery)
Short circuit protection method Hiccup current limiting Non-latching
Regulation ➂
Line Regulation Vin=min. to max., Vout=nom., full load ±75 mV
Load Regulation Iout=min. to max., Vin=nom. ±45 mV
5 Hz- 20 MHz BW, Cout=1µF MLCC
Ripple and Noise 80 150 mV pk-pk
paralleled with 10µF
Temperature Coefficient At all outputs 0.01 0.02 % of Vnom./°C
Maximum Output Capacitance Low ESR 100 10,000 μF
Power Good—Negative logic (Conf via PMBUS)
Power good high stage voltage 2.4 3.6 Vdc
Power good low stage voltage -0.1 0.4 Vdc
Out voltage for power good off triggering Conf via PMBUS 8.64 9.6 10.56 Vdc
Out Voltage for power good on triggering Conf via PMBUS 9.72 10.8 11.88 Vdc
PMBUS
PMBUS GENERAL
PMBUS REV. 1.2. SMBALERT# is supported. PEC is supported. Linear data format used.
Bus speed 400 Khz
Logic high input 2 3.3 Vdc
Logic low input 0 0.8 Vdc
Logic high output 2.4 3.6 Vdc
Logic low output -0.1 0.4 Vdc
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SDC_DBE Series.A06∆ Page 13 of 34
DBE/DVE Series
Up to 300W Digital Fully Regulated Intermediate
DC-DC Bus Converter
FUNCTIONAL SPECIFICATIONS, DBE0125 (12V, 25A, CONT.)
PMBus Minimum Typical/Nominal Maximum Units
Conditions ➀
PMBUS ADDRESSING
If the calculated PMBus address is 0d, 11d or 12d, SA0 or SA1 lefts open, default PMBus address 119d is assigned instead. PMBUS address = 8*SA0 + SA1. SA0/SA1 value VS
resistor connected to GND.
0 10 kΩ
1 22 kΩ
2 33 kΩ
3 47 kΩ
4 68 kΩ
5 100 kΩ
6 150 kΩ
7 220 kΩ
PMBus MONITORING ACCURACY
VIN_READ -3 3 %
VOUT_READ -2 2 %
IOUT_READ -1.5 1.5 A
TEMP_READ -5 5 °C
DIGITAL INTERFACE SPECIFICATIONS (PMBUS MONITORING & FUNCTIONAL DESCRIPTION)
Fault Protection Specifications
Output Voltage, Over Voltage protection, OVP Factory default 14.4 V
VOUT_OV_FAULT_LIMIT, Configurable via PMBus >VOUT_OV_WARM_LIMIT 8.1 15.6 V
Fault response time 200 µS
Input Voltage, Input Over Voltage Protection Factory default 80 V
Setpoint accuracy -2 2 %
VIN_OV_FAULT_LIMIT (Configurable via
>VIN_OV_WARM_LIMIT 34 110 V
PMBus) ➃
Delay 300 µS
Input Voltage, Input Under Voltage Protection,
Factory default 32 V
UVLV
Setpoint accuracy -2 2 %
VIN_FAULT_LIMIT_LIMIT(Configurable via IOUT_OC_WARN_LIMT 0 34 A
PMBus) ➃
Fault response time 200 µS
Over Temperature Protection, OTP OT_FAULT_LIMIT (factory default) 120/125 °C
>OT_WARM_LIMIT 30 130 °C
OT_FAULT_LIMIT (Configurable via PMBus) ➃
OTP accuracy (factory default) 5 5 °C
Fault response time 300 µS
MECHANICAL (Through Hole Models)
Outline Dimensions—open frame 2.3x0.9x0.46 Inches
WxLxH 58.4x22.7x11.7 mm
Outline Dimensions—with baseplate 2.3x0.9x0.52 Inches
WxLxH 58.4x22.7x13.2 mm
Weight—open frame 0.98 Ounces
28 Grams
Weight—with baseplate 1.37 Ounces
39 Grams
Through Hole Pin Diameter 0.04 & 0.062 Inches
1.016 & 1.575 mm
Through Hole Pin Material Copper alloy
TH Pin Plating Metal and Thickness Nickel subplate 50 µ-inches
Gold overplate 5 µ-inches
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SDC_DBE Series.A06∆ Page 14 of 34
DBE/DVE Series
Up to 300W Digital Fully Regulated Intermediate
DC-DC Bus Converter
FUNCTIONAL SPECIFICATIONS, DBE0125 (12V, 25A, CONT.)
ENVIRONMENTAL Minimum Typical/Nominal Maximum Units
Conditions ➀
Operating Ambient Temperature Range With derating -40 85 °C
Operating Baseplate Temperature No derating according to IPC 9592 -40 110 °C
Storage Temperature Vin = Zero (no power) -55 125 °C
Thermal Protection/Shutdown—open frame Measured at hotspot 140 °C
130 °C
Thermal Protection/Shutdown with baseplate ➃
Electromagnetic Interference
B Class
Conducted, EN55022/CISPR22
External filter required
Radiated, EN55022/CISPR22 B Class
RoHS rating RoHS-6
Notes
➀ Typical at TA = +25°C under nominal line voltage and full-load conditions. All models are speci- ➃ When baseplate temperature is above the maximum operating baseplate temperature of 110°C
fied with an external 1μF multi-layer ceramic and 10μF capacitors across their output pins. and below thermal protection temperature of 130°C, the module will continue working but the
➁ Over-current protection is non-latching with auto recovery (Hiccup) thermal stress will be above the IPC9592 guide limit for long-term operation. It is not recom-
➂ Regulation specifications describe the output voltage changes as the line voltage or load current mended to run in such a situation long-term.
is varied from its nominal or midpoint value to either extreme.
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SDC_DBE Series.A06∆ Page 15 of 34
DBE/DVE Series
Up to 300W Digital Fully Regulated Intermediate
DC-DC Bus Converter
TYPICAL PERFORMANCE DATA, DBE0125 (12Vout, 25A)
Efficiency vs. Load Current @ 25°C, with baseplate Ripple & Noise @ 20MHz, Vin=48V, Iout=0A, Cout=0µf
100
95
90
Vin = 75V
85
Vin = 48V
Vin = 36V
80
75
70
2.6 5.1 7.6 10.0 12.5 15.0 17.5 20.0 22.5 25.0
Load Current (A)
Ripple & Noise @ 20MHz, Vin=48V, Iout=25A, Cout=0µf Enable Startup Delay, 48Vin, 0Aout, 10000µf
Enable Startup Delay, 48Vin, 25Aout, 10000µf Transient Response, 50%-75%, 0.1Avs µs, 48Vin, Cout=0µf
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SDC_DBE Series.A06∆ Page 16 of 34
Efficiency (%)
DBE/DVE Series
Up to 300W Digital Fully Regulated Intermediate
DC-DC Bus Converter
DBE0125 (12Vout, 25A) PERFORMANCE DATA: TEMPERATURE DERATING WITH BASEPLATE
Transverse Longitudinal
Maximum Current Temperature Derating at sea level Maximum Current Temperature Derating at sea level
(Vin = 36V, airflow from Vin- to Vin+) (Vin = 36V, airflow from Vin to Vout)
25 25
20 20
0.5 m/s (100 LFM)
1.0 m/s (200 LFM) 0.5 m/s (100 LFM)
15 15
1.5 m/s (300 LFM) 1.0 m/s (200 LFM)
2.0 m/s (400 LFM) 1.5 m/s (300 LFM)
2.5 m/s (500 LFM) 2.0 m/s (400 LFM)
3.0 m/s (600 LFM) 2.5 m/s (500 LFM)
10 10
3.0 m/s (600 LFM)
5 5
0 0
30 35 40 45 50 55 60 65 70 75 80 85 30 35 40 45 50 55 60 65 70 75 80 85
Ambient Temperature (°C) Ambient Temperature (°C)
Maximum Current Temperature Derating at sea level Maximum Current Temperature Derating at sea level
(Vin = 48V, airflow from Vin- to Vin+) (Vin = 48V, airflow from Vin to Vout)
25 25
20 20
0.5 m/s (100 LFM)
1.0 m/s (200 LFM)
0.5 m/s (100 LFM)
15 15
1.5 m/s (300 LFM)
1.0 m/s (200 LFM)
2.0 m/s (400 LFM)
1.5 m/s (300 LFM)
2.5 m/s (500 LFM)
2.0 m/s (400 LFM)
3.0 m/s (600 LFM)
2.5 m/s (500 LFM)
10 10
3.0 m/s (600 LFM)
5 5
0 0
30 35 40 45 50 55 60 65 70 75 80 85 30 35 40 45 50 55 60 65 70 75 80 85
Ambient Temperature (°C) Ambient Temperature (°C)
DBE / DVE0125V2 Baseplate
Current Derating Max Baseplate Temperature
Vin= 48V (tested on 10x10 inch PCB)
30
25
20
15
10
5
0
25 35 45 55 65 75 85 95 105 115 125 135
Maximum Baseplate Temperature (°C)
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SDC_DBE Series.A06∆ Page 17 of 34
Output Current (Amps) Output Current (Amps)
Output load Current (Amps)
Output Current (Amps) Output Current (Amps)
DBE/DVE Series
Up to 300W Digital Fully Regulated Intermediate
DC-DC Bus Converter
DBE0125 (12Vout, 25A) PERFORMANCE DATA: TEMPERATURE DERATING WITH BASEPLATE
Transverse Longitudinal
Maximum Current Temperature Derating at sea level Maximum Current Temperature Derating at sea level
(Vin = 75V, airflow from Vin- to Vin+) (Vin = 75V, airflow from Vin to Vout)
25 25
20 20
15 15
0.5 m/s (100 LFM)
0.5 m/s (100 LFM)
1.0 m/s (200 LFM)
1.0 m/s (200 LFM)
1.5 m/s (300 LFM)
1.5 m/s (300 LFM)
10 10
2.0 m/s (400 LFM)
2.0 m/s (400 LFM)
2.5 m/s (500 LFM)
2.5 m/s (500 LFM)
3.0 m/s (600 LFM)
3.0 m/s (600 LFM)
5 5
0 0
30 35 40 45 50 55 60 65 70 75 80 85 30 35 40 45 50 55 60 65 70 75 80 85
Ambient Temperature (°C) Ambient Temperature (°C)
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SDC_DBE Series.A06∆ Page 18 of 34
Output Current (Amps)
Output Current (Amps)
DBE/DVE Series
Up to 300W Digital Fully Regulated Intermediate
DC-DC Bus Converter
DBE0125 (12Vout, 25A) PERFORMANCE DATA: TEMPERATURE DERATING WITHOUT BASEPLATE
Transverse Longitudinal
Maximum Current Temperature Derating at sea level Maximum Current Temperature Derating at sea level
(Vin = 36V, airflow from Vin- to Vin+) (Vin = 36V, airflow from Vin to Vout)
25 25
20 20
15 15
0.5 m/s (100 LFM)
0.5 m/s (100 LFM)
1.0 m/s (200 LFM)
1.0 m/s (200 LFM)
1.5 m/s (300 LFM)
1.5 m/s (300 LFM)
2.0 m/s (400 LFM)
10 10
2.0 m/s (400 LFM)
2.5 m/s (500 LFM)
2.5 m/s (500 LFM)
3.0 m/s (600 LFM)
3.0 m/s (600 LFM)
5 5
0 0
30 35 40 45 50 55 60 65 70 75 80 85 30 35 40 45 50 55 60 65 70 75 80 85
Ambient Temperature (°C) Ambient Temperature (°C)
Maximum Current Temperature Derating at sea level Maximum Current Temperature Derating at sea level
(Vin = 48V, airflow from Vin- to Vin+) (Vin = 48V, airflow from Vin to Vout)
25 25
20 20
15 15
0.5 m/s (100 LFM)
0.5 m/s (100 LFM)
1.0 m/s (200 LFM)
1.0 m/s (200 LFM)
1.5 m/s (300 LFM)
10 10
1.5 m/s (300 LFM)
2.0 m/s (400 LFM)
2.0 m/s (400 LFM)
2.5 m/s (500 LFM)
2.5 m/s (500 LFM)
3.0 m/s (600 LFM)
3.0 m/s (600 LFM)
5 5
0 0
30 35 40 45 50 55 60 65 70 75 80 85 30 35 40 45 50 55 60 65 70 75 80 85
Ambient Temperature (°C) Ambient Temperature (°C)
Maximum Current Temperature Derating at sea level Maximum Current Temperature Derating at sea level
(Vin = 75V, airflow from Vin- to Vin+) (Vin = 75V, airflow from Vin to Vout)
25 25
20 20
15 15
0.5 m/s (100 LFM)
10 10 0.5 m/s (100 LFM)
1.0 m/s (200 LFM)
1.0 m/s (200 LFM)
1.5 m/s (300 LFM)
1.5 m/s (300 LFM)
2.0 m/s (400 LFM)
2.0 m/s (400 LFM)
2.5 m/s (500 LFM)
5 5 2.5 m/s (500 LFM)
3.0 m/s (600 LFM)
3.0 m/s (600 LFM)
0 0
30 35 40 45 50 55 60 65 70 75 80 85 30 35 40 45 50 55 60 65 70 75 80 85
Ambient Temperature (°C) Ambient Temperature (°C)
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SDC_DBE Series.A06∆ Page 19 of 34
Output Current (Amps) Output Current (Amps) Output Current (Amps)
Output Current (Amps) Output Current (Amps) Output Current (Amps)
DBE/DVE Series
Up to 300W Digital Fully Regulated Intermediate
DC-DC Bus Converter
MECHANICAL SPECIFICATIONS - DBE SERIES
OPEN FRAME WITH BASEPLATE OPTION
2.30 (58.4)
2.30 (58.4)
16
1
14 15
12 13 M3 THREAD TYP 4PL
10 11
2
8 9
6 7
5
4
2.000 (50.8)
0.150
TOP VIEW
TOP VIEW
SEE NOTE 7
SIDE VIEW
PINS 1,2,4,:
φ0.040±0.0015(1.016±0.038)
PINS 1,2,4,:
Shoulder: φ0.076±0.005(1.93±0.13)
φ0.040±0.0015(1.016±0.038)
0.005 minimum clearance
PINS 5,16:
Shoulder: φ0.076±0.005(1.93±0.13) 0.005 minimum clearance
between standoffs and
φ0.062±0.0015(1.575±0.038)
PINS 5,16:
highest component between standoffs and
SEE NOTE 6 Shoulder: φ0.098±0.005(2.49±0.13) φ0.062±0.0015(1.575±0.038)
highest component
SEE NOTE 6 Shoulder: φ0.098±0.005(2.49±0.13)
2.000 (50.8)
2.000 (50.8)
16
1
15
14
12 13
2 10 11
9
8
0.031 TYP 10PL
6 7
1
4
5
RECOMMENDED FOOTPRINT
SQ.0.02
BOTTOM PIN SIDE VIEW
0.180 2.00
0.079
NOTES:
2.36
UNLESS OTHERWISE SPECIFIED:
1:M3 SCREW USED TO BOLT UNIT'S BASEPLATE TO OTHER SURFACES 0.039
(SUCH AS HEATSINK) MUST NOT EXCEED 0.120''(3.0mm) DEPTH BELOW
0.079
THE SURFACE OF BASEPLATE
2:APPLIED TORQUE PER SCREW SHOULD NOT EXCEED 5.3In-lb(0.6Nm);
3:ALL DIMENSION ARE IN INCHES[MILIMETER];
4:ALL TOLERANCES: ×.××in ,±0.02in(×.×mm,±0.5mm)
×.×××in ,±0.01in(×.××mm,±0.25mm)
5:COMPONENT WILL VARY BETWEEN MODELS
6:STANDARD PIN LENGTH: 0.180 Inch
FOR 1 PIN LENGTH OPTION IN MODEL NAME,
THE LENGTH SHOULD BE 0.110 INCH
FOR 2 PIN LENGTH OPTION, PLEASE SEE THE PART NUMBER STRUCTURE ON P. 2;
INPUT/OUTPUT CONNECTIONS
USE STANDARD 2 PIN WITH PIN LENGTH TO 0.145 Inch
7:0.45" (Max) for the DBE0340 & DBE0540
Pin Designation Function
0.46" (Max) for the DBE0125
1 +VIN Positive Input
2 RC Remote Control
4 –VIN Negative Input
5 –VOUT Negative Output
6 +S Positive Remote Sense
Dimensions are in inches (mm shown for ref. only).
7 –S Negative Remote Sense
8 SA0 Address Pin 0
Third Angle Projection
9 SA1 Address Pin 1
10 SCL PMBus Clock
11 SDA PMBus Data
12 PG Power Good Output
13 DGND PMBus Ground Tolerances (unless otherwise specified):
.XX ± 0.02 (0.5)
14 SMBALERT PMBus Alert Signal
.XXX ± 0.010 (0.25)
15 CTRL Secondary Remote Control
Angles ± 2˚
16 +VOUT Positive Output
Components are shown for reference only
and may vary between units.
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SDC_DBE Series.A06∆ Page 20 of 34
0.075
0.055
0.600 (15.24)
0.90 (22.9)
L
0.45 Max
0.079
0.315
0.600
(15.24)
0.96
0.90 (22.9)
0.600 0.180
L
0.079
0.52 Max 0.600
0.150
0.600 0.180 (15.24)
DBE/DVE Series
Up to 300W Digital Fully Regulated Intermediate
DC-DC Bus Converter
MECHANICAL SPECIFICATIONS - DVE SERIES
OPEN FRAME WITH BASEPLATE OPTION
2.30 (58.4)
2.30 (58.4)
1
16
M3 THREAD TYP 4PL
2
4
5
2.000 (50.8)
0.150
TOP VIEW
TOP VIEW
SEE NOTE 7
SIDE VIEW
PINS 1,2,4,:
φ0.040±0.0015(1.016±0.038)
PINS 1,2,4,:
Shoulder: φ0.076±0.005(1.93±0.13)
φ0.040±0.0015(1.016±0.038)
0.005 minimum clearance
PINS 5,16:
Shoulder: φ0.076±0.005(1.93±0.13) 0.005 minimum clearance
between standoffs and
φ0.062±0.0015(1.575±0.038)
PINS 5,16:
highest component between standoffs and
SEE NOTE 6 Shoulder: φ0.098±0.005(2.49±0.13) φ0.062±0.0015(1.575±0.038)
highest component
SEE NOTE 6 Shoulder: φ0.098±0.005(2.49±0.13)
2.000 (50.8)
2.000 (50.8)
16
1
2
1
4
5
RECOMMENDED FOOTPRINT
BOTTOM PIN SIDE VIEW
0.180 2.00
NOTES:
2.36
UNLESS OTHERWISE SPECIFIED:
1:M3 SCREW USED TO BOLT UNIT'S BASEPLATE TO OTHER SURFACES
(SUCH AS HEATSINK) MUST NOT EXCEED 0.120''(3.0mm) DEPTH BELOW
THE SURFACE OF BASEPLATE
2:APPLIED TORQUE PER SCREW SHOULD NOT EXCEED 5.3In-lb(0.6Nm);
3:ALL DIMENSION ARE IN INCHES[MILIMETER];
4:ALL TOLERANCES: ×.××in ,±0.02in(×.×mm,±0.5mm)
×.×××in ,±0.01in(×.××mm,±0.25mm)
5:COMPONENT WILL VARY BETWEEN MODELS
6:STANDARD PIN LENGTH: 0.180 Inch
FOR 1 PIN LENGTH OPTION IN MODEL NAME,
THE LENGTH SHOULD BE 0.110 INCH
FOR 2 PIN LENGTH OPTION, PLEASE SEE THE PART NUMBER STRUCTURE ON P. 2;
INPUT/OUTPUT CONNECTIONS
USE STANDARD 2 PIN WITH PIN LENGTH TO 0.145 Inch
7:0.45" (Max) for the DBE0340 & DBE0540
Pin Designation Function
0.46" (Max) for the DBE0125
1 +VIN Positive Input
2 RC Remote Control
4 –VIN Negative Input
5 –VOUT Negative Output
16 +VOUT Positive Output
Dimensions are in inches (mm shown for ref. only).
Third Angle Projection
Tolerances (unless otherwise specified):
.XX ± 0.02 (0.5)
.XXX ± 0.010 (0.25)
Angles ± 2˚
Components are shown for reference only
and may vary between units.
www.murata-ps.com/support
SDC_DBE Series.A06∆ Page 21 of 34
0.075
0.055
0.600 (15.24)
0.90 (22.9)
L
0.45 Max
0.600
(15.24)
0.96
0.90 (22.9)
0.600 0.180
L
0.079
0.52 Max 0.600
0.150
0.600 0.180 (15.24)
DBE/DVE Series
Up to 300W Digital Fully Regulated Intermediate
DC-DC Bus Converter
SHIPPING TRAYS AND BOXES
Anti-static foam
Label
Label
For 1–42 pc quantity For 43–84 pc quantity
SHIPPING TRAY
DBE/DVE modules are supplied in a 21-piece (3-by-7) shipping tray. The tray is an anti-static closed-cell polyethylene foam. Dimensions are shown
below.
9.920
+0.000
(252)
-0.062
0.910 (23.1) TYP
0.455 (11.6) TYP
0.735 (18.7)
9.920
(252)
+0.000
-0.062
0.625 (15.9) TYP
2.400 (61) TYP
Dimensions in inches (mm)
0.25 R TYP
1.300 (33.0) TYP
0.25 CHAMFER TYP (4-PL)
7.800
1.06
(198.1)
(26.9)
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SDC_DBE Series.A06∆ Page 22 of 34
DBE/DVE Series
Up to 300W Digital Fully Regulated Intermediate
DC-DC Bus Converter
PIH SHIPPING TRAYS AND BOXES
Anti-static foam
For 1-42 pc quantity
www.murata-ps.com/support
SDC_DBE Series.A06∆ Page 23 of 34
DBE/DVE Series
Up to 300W Digital Fully Regulated Intermediate
DC-DC Bus Converter
TECHNICAL NOTES
Power Management Overview Switching Frequency Adjust Using PMBus
The module includes a wide range of readable and configurable power By default the switching frequency is set to 175-250 KHz variable frequency
management features that are easy to implement with a minimum of external control. The product is optimized at this frequency but it can be changed to 175
components. Furthermore, the module includes protection features that KHz fixed frequency control. The thermal performance can be affected if the
continuously protect the load from damage due to unexpected system faults. switching frequency is changed when Vin is above 50 Vdc. The following graph
The SMBALERT pin alerts the host if there is a fault in the module. The follow- shows Frequency vs. Vin.
ing product parameters can continuously be monitored by a host: Vout, Iout,
PMBus Interface
Vin, Temperature, and Power Good. The module is distributed with a default
This module offers a PMBus digital interface that enables the user to configure
configuration suitable for a wide range operation in terms of Vin, Vout, and
many characteristics of the device operation as well as to monitor the input
load. All power management functions can be reconfigured using the PMBus
and output voltages, output current and device temperature. The module can
interface. The product provides a PMBus digital interface that enables the user
be used with any standard two-wire I2C or SMBus host device. In addition, the
to configure many aspects of the device operation as well as monitor the input
module is compatible with PMBus version 1.2 and includes an SMBALERT line
and output parameters. Please contact Murata-PS for design support of special
to help alleviate bandwidth limitations related to continuous fault monitoring.
configurations.
The module supports 100 kHz and 400 kHz bus clock frequency only.
Soft-start Power Up
Monitoring via PMBus
The default rise time of the ramp up is 20 ms. When starting by applying
A system controller (host device) can monitor a wide variety of parameters
input voltage the control circuit boot-up time adds an additional 10 ms delay.
through the PMBus interface. The controller can monitor fault conditions by
The soft-start power up of the module can be reconfigured using the PMBus
monitoring the SMBALERT pin, which will be asserted when any number of
interface.
pre-configured fault or warning conditions occur. The system controller can
Over Voltage Protection (OVP)
also continuously monitor any number of power conversion parameters includ-
The module includes over voltage limiting circuitry for protection of the load. ing but not limited to the following:
The default OVP limit is 20% above the nominal output voltage. If the output • Input voltage
voltage surpasses the OVP limit, the module can respond in different ways. • Output voltage
The default response from an over voltage fault is to immediately shut down. • Output current
The device will continuously check for the presence of the fault condition, • Module temperature
and when the fault condition no longer exists the device will be re-enabled.
Software Tools for Design and Production
The OVP fault level and fault response can be reconfigured using the PMBus
For these modules Murata-PS provides software for configuring and monitor-
interface.
ing via the PMBus interface. For more information please contact your local
Over Current Protection (OCP, Current limit)
Murata-PS representative.
The module includes current limiting circuitry for protection at continuous over
load. The default setting for the product is hicup mode. The current limit could
be configured by simply setting the IOUT_OC_FAULT_LIMIT to be greater than
the IOUT_OC_WARN_LIMIT. The maximum value that the current limit could be
set is 50A.
Power Good
The module provides Power Good (PG) flag in the Status Word register that
indicates the output voltage is within a specified tolerance of its target level
and no fault condition exists. The Power Good pin default logic is negative and
it can be configured by MFR_PGOOD_POLARITY.
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SDC_DBE Series.A06∆ Page 24 of 34
DBE/DVE Series
Up to 300W Digital Fully Regulated Intermediate
DC-DC Bus Converter
PMBus Addressing
Figure 1 and the accompanying table display the recommended resistor values
for hard-wiring PMBus addresses (1% tolerance resistors recommended): The
address is set in the form of two octal (0 to 7) digits, with each pin setting one
SA0
digit. The SA1 pin sets the high order digit and SA0 sets the low order digit. The
resistor values for each digit is shown below.
SA1
The SA0 and SA1 pins can be configured with a resistor to GND according to
R R
1 0
C0
the following equation.
PMBus Address = 8 x (SA0value) + (SA1 value)
If the calculated PMBus address is 0d, 11d or 12d, default PMBus address is C1
assigned instead. From a system point of view, the user shall also be aware of
further limitations of the addresses as stated in the PMBus Specification. It is Figure 1. Schematic of Connection of Address Resistors
not recommended to keep the SA0 and SA1 pins left open.
Digit (SA0, SA1 index) Resistor Value [kΩ]
PMBus Commands
0 10
The products are designed to be PMBus compliant. The following tables list
1 22
the implemented PMBus read commands. For more detailed information see 2 33
3 47
“PMBus Power System Management Protocol Specification, Part I – General
4 68
Requirements, Transport and Electrical Interface” and “PMBus Power System
5 100
Management Protocol, Part II – Command Language.”
6 150
7 220
OVERALL
SMBus SMBus
1
CMD Command Name Transaction Type: Transaction Type:
Writing Data Reading Data
2
01h OPERATION Write Byte Read Byte
3
02h ON_OFF_CONFIG Write Byte Read Byte
03h CLEAR_FAULTS Send byte N/A
10h WRITE_PROTECT Write Byte Read Byte
4
11h STORE_DEFAULT_ALL Send byte N/A
4
12h RESTORE_DEFAULT_ALL Send byte N/A
4
15h STORE_USER_ALL Send byte N/A
4
16h RESTORE_USER_ALL Send byte N/A
19h CAPABILITY N/A Read Byte
20h VOUT_MODE N/A Read Byte
21h VOUT_COMMAND Write Word Read Word
22h VOUT_TRIM Write Word Read Word
25h VOUT_MARGIN_HIGH Write Word Read Word
26h VOUT_MARGIN_LOW Write Word Read Word
11
28h VOUT_DROOP Write Word Read Word
40h VOUT_OV_FAULT_LIMIT Write Word Read Word
5
41h VOUT_OV_FAULT_RESPONSE Write Byte Read Byte
42h VOUT_OV_WARN_LIMIT Write Word Read Word
46h IOUT_OC_FAULT_LIMIT Write Word Read Word
6
47h IOUT_OC_FAULT_RESPONSE Write Byte Read Byte
4Ah IOUT_OC_WARN_LIMIT Write Word Read Word
4Fh OT_FAULT_LIMIT Write Word Read Word
5
50h OT_FAULT_RESPONSE Write Byte Read Byte
51h OT_WARN_LIMIT Write Word Read Word
55h VIN_OV_FAULT_LIMIT Write Word Read Word
7
56h VIN_OV_FAULT_RESPONSE Write Byte Read Byte
57h VIN_OV_WARN_LIMIT Write Word Read Word
58h VIN_UV_WARN_LIMIT Write Word Read Word
59h VIN_UV_FAULT_LIMIT Write Word Read Word
7
5Ah VIN_UV_FAULT_RESPONSE Write Byte Read Byte
5Eh POWER_GOOD_ON Write Word Read Word
5Fh POWER_GOOD_OFF Write Word Read Word
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SDC_DBE Series.A06∆ Page 25 of 34
DBE/DVE Series
Up to 300W Digital Fully Regulated Intermediate
DC-DC Bus Converter
OVERALL (CONT.)
SMBus SMBus
1
CMD Command Name Transaction Type: Transaction Type:
Writing Data Reading Data
11
60h TON_DELAY Write Word Read Word
12 11
61h TON_RISE Write Word Read Word
11
64h TOFF_DELAY Write Word Read Word
12 11
65h TOFF_FALL Write Word Read Word
78h STATUS_BYTE Write Byte Read Byte
79h STATUS_WORD Write Word Read Word
7Ah STATUS_VOUT Write Byte Read Byte
7Bh STATUS_IOUT Write Byte Read Byte
7Ch STATUS_INPUT Write Byte Read Byte
7Dh STATUS_TEMPERATURE Write Byte Read Byte
7Eh STATUS_CML Write Byte Read Byte
88h READ_VIN N/A Read Word
8Bh READ_VOUT N/A Read Word
8Ch READ_IOUT N/A Read Word
8
8Dh READ_TEMPERATURE_1 N/A Read Word
9
8Eh READ_TEMPERATURE_2 N/A Read Word
94h READ_DUTY_CYCLE N/A Read Word
95h READ_FREQUENCY N/A Read Word
96h READ_POUT N/A Read Word
98h PMBUS_REVISION N/A Read Byte
99h MFR_ID N/A Block Read
10
9Ah MFR_MODEL Block Write Block Read
10
9Bh MFR_REVISION Block Write Block Read
10
9Dh MFR_DATE Block Write Block Read
10
9Eh MFR_SERIAL Block Write Block Read
A0h MFR_VIN_MIN N/A Read Word
A1h MFR_VIN_MAX N/A Read Word
A2h MFR_IIN_MAX N/A Read Word
A3h MFR_PIN_MAX N/A Read Word
A4h MFR_VOUT_MIN N/A Read Word
A5h MFR_VOUT_MAX N/A Read Word
A6h MFR_IOUT_MAX N/A Read Word
A7h MFR_POUT_MAX N/A Read Word
A8h MFR_TAMBIENT_MAX N/A Read Word
A9h MFR_TAMBIENT_MIN N/A Read Word
B0h USER_DATA_00 Block Write Block Read
B1h USER_DATA_01 Block Write Block Read
C0h MFR_MAX_TEMP_1 N/A Read Word
D0h MFR_VARIABLE_FREQUENCY_DISABLE Write Byte Read Byte
DBh MFR_CURRENT_SHARE_CONFIG Write Byte Read Byte
DDh MFR_PRIMARY_ON_OFF_CONFIG Write Byte Read Byte
DEh MFR_PGOOD_POLARITY Write Byte Read Byte
E8h MFR_VIN_OV_FAULT_HYS Write Word Read Word
E9h MFR_VIN_UV_FAULT_HYS Write Word Read Word
EAh MFR_OT_FAULT_HYS Write Word Read Word
F6h MFR_CALIBRATION_STATUS N/A Read Byte
F9h MFR_VIN_SENSE_CALIBRATION Write byte N/A
FAh MFR_IOUT_SENSE_CALIBRATION Write Word N/A
FBh MFR_VOUT_SET_POINT_CALIBRATION Write Word N/A
FCh MFR_SUPERVISOR_PASSWORD Block Write N/A
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SDC_DBE Series.A06∆ Page 26 of 34
DBE/DVE Series
Up to 300W Digital Fully Regulated Intermediate
DC-DC Bus Converter
OVERALL (CONT.)
Notes:
1. a) Unit restores the entire contents of the non-volatile User Store memory when power up 6. Restart delay unit and Turn off delay unit are same as note 5
b) PEC is supported Bits 7:6: 00b,01b,10b are not supported
c) Max bus speed: 400kHZ 7. Restart delay unit: 100ms, lower limit: 100ms.
d) SMBALERT# is supported Turn off delay unit:0ms, lower limit: 0ms
e) Linear data format used if bits 7:6=11b, restart delay is 100ms
f) addressing: If the calculated PMBus address is 0d, 11d or 12d, SA0 or SA1 lefts open, default 8. Temperature of baseplate side
PMBus address 119d is assigned instead. 9. Temperature of pin side
2. Not supported items: 10. Unit's actual information
100101XXb Margin Low(Ignore Fault), 11. Not available in Droop current share mode
101001XXb On Margin High(Ignore Fault) 12. Value of 0 is acceptable, which is the same as lower limit to unit.
3. Restart delay of turned off by OPEATION or CONTROL or primary on/off is 200ms
4. Unit will shutdown 1 second for protection , then recover automatically.
5. Restart delay unit: 500ms, lower limit: 500ms.
Turn off delay unit: 0ms, lower limit: 0ms
if bits 7:6=11b, restart delay is 500ms
MURATA-PS DEFINED COMMANDS (01-CFH REFER TO PMBUS 1.2 SPEC)
D0h: MFR_VARIABLE_FREQUENCY_DISABLE
Bits Purpose Value Meaning
7:1 0000000 Reserved
0 Turn on variable frequency control
Variable frequency
0
control 1 Turn off variable frequency control
DBh: MFR_CURRENT_SHARE_CONFIG
Bits Purpose Value Meaning On/Off 2 pin VOUT_DROOP TON_DELAY TOFF_DELAY TON_RISE TOFF_FALL
7:1 0000000 Reserved -- -- -- -- -- --
0 Current share disabled On/Off 2 configurable configurable configurable configurable configurable
Variable frequency
0
control 1 Droop current share mode enabled On/Off 2 locked to 0x000A locked to 0x0001 locked to 0x0000 locked to 0x0000 locked to 0x0000
DDh: MFR_PRIMARY_ON_OFF_CONFIG
Bits Purpose Value Meaning
7:3 00000 Reserved
Controls how the 0 Unit ignores the primary ON/OFF pin
2 unit responds to the Unit requires the primary ON/OFF pin to be
1
CONTROL pin asserted to start the unit.
Polarity of primary 0 Active low (Pull pin low to start the unit)
1
ON/OFF logic
1 Active high (Pull high or open to start the unit)
0 0 Reserved
DEh: MFR_ PGOOD_POLARITY
Bits Purpose Value Meaning
7:1 0000000 Reserved
Negative logic, output low if Vout rises to
0
Power good polarity specific value
0
Positive logic, output high if Vout rises to
of pin 12
1
specific value
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SDC_DBE Series.A06∆ Page 27 of 34
DBE/DVE Series
Up to 300W Digital Fully Regulated Intermediate
DC-DC Bus Converter
STATUS WORD AND BYTE (GREEN = SUPPORTED)
STATUS_VOUT STATUS_WORD STATUS_INPUT
7 VOUT_OV_FAULT 7 VOUT 7 VIN_OV_FAULT
6 VOUT_OV_WARNING 6 IOUT/POUT 6 VIN_OV_WARNING
5 VOUT_UV_WARNING 5 INPUT 5 VIN_UV_WARNING
4 VOUT_UV_FAULT 4 MFR_SPECIFIC 4 VIN_UV_FAULT
3 VOUT_MAX Warning 3 POWER_GOOD# 2 IIN_OC_FAULT
2 TON_MAX_FAULT 2 FANS 1 IIN_OC_WARNING
1 TOFF_MAX_WARNING 1 OTHER 0 PIN_OP_WARNING
0 VOUT Tracking Error 0 UNKNOWN
7 BUSY STATUS_MFR_SPECIFIC
STATUS_IOUT 6 OFF Manufacturer Defined
7 IOUT_OC_FAULT 5 VOUT_OV_FAULT Manufacturer Defined
6 IOUT_OC_LV_FAULT 4 IOUT_OC_FAULT Manufacturer Defined
5 IOUT_OC_WARNING 3 VIN_UV_FAULT Manufacturer Defined
4 IOUT_UC_FAULT 2 TEMPERATURE Manufacturer Defined
3 Current Share Fault 1 CML Manufacturer Defined
2 In Power Limiting Mode 0 NONE OF THE ABOVE Manufacturer Defined
1 POUT_OP_FAULT Manufacturer Defined
0 POUT_OP_WARNING
STATUS_FANS_1_2
STATUS_TEMPERATURE STATUS_OTHER 7 Fan 1 Fault
7 OT_FAULT 7 Reserved 6 Fan 2 Fault
6 OT_WARNING 6 Reserved 5 Fan 1 Warning
5 UT_WARNING 5 Input A Fuse/Breaker Fault 4 Fan 2 Warning
4 UT_FAULT 4 Input B Fuse/Breaker Fault 3 Fan 1 Speed Override
3 Reserved 3 Input A OR-ing Device Fault 2 Fan 2 Speed Override
2 Reserved 2 Input B OR-ing Device Fault 1 Air Flow Fault
1 Reserved 1 Output OR-ing Device Fault 0 Air Flow Warning
0 Reserved 0 Reserved
STATUS_FANS_3_4
STATUS_CML 7 Fan 3 Fault
7 Invalid/Unsupported Command 6 Fan 4 Fault
6 Invalid/Unsupported Data 5 Fan 3 Warning
5 Packet Error Check Failed 4 Fan 4 Warning
4 Memory Fault Detected 3 Fan 3 Speed Override
3 Processor Fault Detected 2 Fan 4 Speed Override
2 Reserved 1 Reserved
1 Other Communication Fault 0 Reserved
0 Other Memory Or Logic Fault
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SDC_DBE Series.A06∆ Page 28 of 34
DBE/DVE Series
Up to 300W Digital Fully Regulated Intermediate
DC-DC Bus Converter
TECHNICAL NOTES (CONT.)
Parallel Load Sharing (S Option, Droop Load Sharing) Using Parallel Connections – Redundancy (N+1)
Two or more converters may be connected in parallel at both the input and The redundancy connections require external user supplied “OR”ing diodes or
output terminals to support higher output current (total power, see figure 2) or “OR”ing MOSFETs for reliability purposes. The diodes allow for an uninterrupt-
to improve reliability due to the reduced stress that results when the modules able power system operation in case of a catastrophic failure (shorted output)
are operating below their rated limits. For applications requiring current share, by one of the converters.
followed the guidelines below. The products have a pre-configured voltage The diodes should be identical part numbers to enhance balance between
droop. The stated output voltage set point is at no load. The output voltage the converters. The default factory nominal voltage should be sufficiently
will decrease when the load current is increased. The voltage will drop droop matched between converters. The OR’ing diode system is the responsibility of
0.35V while load reaches max load. Our goal is to have each converter con- the user. Be aware of the power levels applied to the diodes and possible heat
tribute nearly identical current into the output load under all input, environmen- sink requirements.
tal and load conditions. Schottky power diodes with approximately 0.3V drops or “OR”ing MOSFETs
may be suitable in the loop whereas 0.7 V silicon power diodes may not be
Using Parallel Connections – Load Sharing (Power Boost)
advisable. In the event of an internal device fault or failure of the mains power
Direct Connection Parallel Guidelines
modules on the primary side, the other devices automatically take over the
Use a common input power source. The input voltage must be between 36V
entire supply of the loads. In the basic N+1 power system, the “N” equals the
and 75V.
number of modules required to fully power the system and “+1” equals one
back-up module that will take over for a failed module. If the system consists
+Vout and –Vout of all parallel units should be connected with a balance
of two power modules, each providing 50% of the total load power under
output impedance; +Sense and –Sense should be connected together (see
figure 2).
normal operation and one module fails, another one delivers full power to the
load. This means you can use smaller and less expensive power converters as
Turn all units off before configuring the output voltage via PMBus com-
the redundant elements, while achieving the goal of increased availability.
mands; all units must have the same output voltage configuration.
It is recommended to turn on one unit first and then turn other unit (s) on
Thermal Shutdown
after the output for the first one has settled. Turn on the next unit (s) after the
Extended operation at excessive temperature will initiate overtemperature
previous unit reaches its regulated output voltage for at least 10mS. Users
shutdown triggered by a temperature sensor outside the PWM controller. This
can use a different control signal to turn each unit on.
operates similarly to overcurrent and short circuit mode. The inception point
Users have the option to use a common primary or secondary Remote On/
of the overtemperature condition depends on the average power delivered,
Off logic control signal to turn on modules at the same time after the input
the ambient temperature and the extent of forced cooling airflow. Thermal
voltage rises above 36V.
shutdown uses only the hiccup mode (autorestart) and PMBus configurable
Do not use PMBus to control unit On/Off when parallel operation is used.
hysteresis.
First power up the parallel system (all converters) with a load not exceeding
Start Up Considerations
the rated load of 60%*35A*UNITS_QUANTITY and allow converters to settle
When power is first applied to the DC-DC converter, there is some risk of start
(typically 10-50mS) before applying full load (90% load is recommended).
up difficulties if you do not have both low AC and DC impedance and adequate
If the loads are downstream POL converters, power these up shortly after
regulation of the input source. Make sure that your source supply does not allow
the converter has reached steady state output. Also be aware of the delay
the instantaneous input voltage to go below the minimum voltage at all times.
caused by charging up external bypass capacitors.
Use a moderate size capacitor very close to the input terminals. You may
When converters are connected in parallel, allow for a safety factor of at
need two or more parallel capacitors. A larger electrolytic or ceramic cap sup-
least 10%. Up to 90% of max output current can be used from each module.
plies the surge current and a smaller parallel low-ESR ceramic cap gives low
It is critical that the PCB layout incorporates identical connections from each
AC impedance.
module to the load; use the same trace rating and airflow/thermal environ-
Remember that the input current is carried both by the wiring and the
ments. If you add input filter components, use identical components and
ground plane return. Make sure the ground plane uses adequate thickness
layout.
copper. Run additional bus wire if necessary.
For Power-down, do not soft-off (GUI) while in parallel operation. Power
down units by primary or secondary On/Off signal. Turn units off at the Input Fusing
same time or one by one to avoid the OCP being triggered.
Certain applications and/or safety agencies may require fuses at the inputs of
power conversion components. Fuses should also be used when there is the
CAUTION: This converter is not internally fused. To avoid danger to persons
possibility of sustained input voltage reversal which is not current-limited. For
or equipment and to retain safety certification, the user must connect an
greatest safety, we recommend a fast blow fuse installed in the ungrounded
external fast-blow input fuse as listed in the specifications. Be sure that the PC
input supply line.
board pad area and etch size are adequate to provide enough current so that
the fuse will blow with an overload.
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SDC_DBE Series.A06∆ Page 29 of 34
DBE/DVE Series
Up to 300W Digital Fully Regulated Intermediate
DC-DC Bus Converter
Figure 2. Load Sharing Block Diagram
Input Under-Voltage Shutdown and Start-Up Threshold
Under normal start-up conditions, converters will not begin to regulate properly including long distributed wiring to a remote power supply. The converter will
until the rising input voltage exceeds and remains at the Start-Up Threshold operate with no additional external capacitance if these conditions are met.
Voltage (see Specifications). Once operating, converters will not turn off until For best performance, we recommend installing a low-ESR capacitor
the input voltage drops below the Under-Voltage Shutdown Limit. Subsequent immediately adjacent to the converter’s input terminals. The capacitor should
restart will not occur until the input voltage rises again above the Start-Up be a ceramic type such as the Murata GRM32 series or a polymer type. Make
Threshold. This built-in hysteresis prevents any unstable on/off operation at a sure that the input terminals do not go below the undervoltage shutdown volt-
single input voltage. The over/under-voltage fault level and fault response and age at all times. More input bulk capacitance may be added in parallel (either
hysterisis can be configured via the PMBus interface. electrolytic or tantalum) if needed.
Start-Up Time Recommended Output Filtering
Assuming that the output current is set at the rated maximum, the Vin to Vout The converter will achieve its rated output ripple and noise with no additional
Start-Up Time (see Specifications) is the time interval between the point when
external capacitor. However, the user may install more external output capaci-
the rising input voltage crosses the Start-Up Threshold and the fully loaded tance to reduce the ripple even further or for improved dynamic response.
output voltage enters and remains within its specified accuracy band. Actual
Again, use low-ESR ceramic (Murata GRM32 series) or polymer capacitors.
measured times will vary with input source impedance, external input capaci- Mount these close to the converter. Measure the output ripple under your load
tance, input voltage slew rate and final value of the input voltage as it appears
conditions.
at the converter. Use only as much capacitance as required to achieve your ripple and noise
These converters include a soft start circuit to moderate the duty cycle of its
objectives. Excessive capacitance can make step load recovery sluggish or
PWM controller at power up, thereby limiting the input inrush current. possibly introduce instability. Do not exceed the maximum rated output capaci-
The On/Off Remote Control interval from On command to Vout (final ±5%)
tance listed in the specifications.
assumes that the converter already has its input voltage stabilized above the
Input Ripple Current and Output Noise
Start-Up Threshold before the On command. The interval is measured from the
All models in this converter series are tested and specified for input reflected
On command until the output enters and remains within its specified accuracy
ripple current and output noise using designated external input/output com-
band. The specification assumes that the output is fully loaded at maximum
ponents, circuits and layout as shown in the figures below. The Cbus and Lbus
rated current. Similar conditions apply to the On to Vout regulated specification
components simulate a typical DC voltage bus.
such as external load capacitance and soft start circuitry.
Minimum Output Loading Requirements
Recommended Input Filtering
All models regulate within specification and are stable under no load to full
The user must assure that the input source has low AC impedance to provide
load conditions.
dynamic stability and that the input supply has little or no inductive content,
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SDC_DBE Series.A06∆ Page 30 of 34
DBE/DVE Series
Up to 300W Digital Fully Regulated Intermediate
DC-DC Bus Converter
TO
CURRENT
OSCILLOSCOPE
PROBE
+Vin
+Vout
LBUS
+
–
C1 C2
VIN
CBUS CIN
RLOAD
SCOPE
+
–
-Vin
-Vout
CIN = 220µF, ESR < 700mΩ @ 100kHz
CBUS = 220µF, ESR < 100mΩ @ 100kHz
LBUS = 12µH
C1 = 1µF; C2 = 10µF
Figure 3. Measuring Input Ripple Current
LOAD 2-3 INCHES (51-76mm) FROM MODULE
Figure 4. Measuring Output Ripple and Noise (PARD)
Thermal Shutdown (OTP, UTP) Output Short Circuit Condition
To prevent many over temperature problems and damage, these converters The short circuit condition is an extension of the “Current Limiting” condition.
include thermal shutdown circuitry. If environmental conditions cause the When the monitored peak current signal reaches a certain range, the PWM
temperature of the DC-DCs to rise above the Operating Temperature Range controller’s outputs are shut off thereby turning the converter “off.” This is
up to the shutdown temperature, an on-board electronic temperature sensor followed by an extended time out period. This period can vary depending on
will power down the unit. When the temperature decreases below the turn-on other conditions such as the input voltage level. Following this time out period,
threshold set in the command recover temp is (OT_FAULT_LIMIT-MFR_OT_ the PWM controller will attempt to re-start the converter by initiating a “normal
FAULT_HYS), the hysteresis is defined in general electrical specification start cycle” which includes softstart. If the “fault condition” persists, another
section. The OTP and hysteresis of the module can be reconfigured using the “hiccup” cycle is initiated. This “cycle” can and will continue indefinitely until
PMBus. The OTP and UTP fault limit and fault response can be configured via such time as the “fault condition” is removed, at which time the converter will
the PMBus. resume “normal operation.” Operating in the “hiccup” mode during a fault
CAUTION: If you operate too close to the thermal limits, the converter may condition is advantageous in that average input and output power levels are
shut down suddenly without warning. Be sure to thoroughly test your applica- held low preventing excessive internal increases in temperature.
tion to avoid unplanned thermal shutdown.
Remote On/Off Control
Temperature Derating Curves
The DBE series modules are equipped with both primary (On/Off 1, enabled,
The graphs in this data sheet illustrate typical operation under a variety of pull up internal) and secondary (On/Off 2, disabled, pull up internal) control pins
conditions. The Derating curves show the maximum continuous ambient air for increased system flexibility. Both are configurable via PMBus. The On/Off
temperature and decreasing maximum output current which is acceptable pins are TTL open-collector and/or CMOS open-drain compatible. (See general
under increasing forced airflow measured in Linear Feet per Minute (“LFM”). specifications for threshold voltage levels. See also MFR_PRIMARY_ON_OFF_
Note that these are AVERAGE measurements. The converter will accept brief CONFIG section.)
increases in current or reduced airflow as long as the average is not exceeded. Negative-logic models are on (enabled) when the On/Off is grounded or
Note that the temperatures are of the ambient airflow, not the converter brought to within a low voltage (see specifications) with respect to –Vin.
itself which is obviously running at higher temperature than the outside air. The device is off (disabled) when the On/Off is left open or is pulled high to
Also note that “natural convection” is defined as very flow rates which are not +13.5Vdc with respect to –Vin. The On/Off function allows the module to be
using fan-forced airflow. Depending on the application, “natural convection” is turned on/off by an external device switch.
usually about 30-65 LFM but is not equal to still air (0 LFM). Positive-logic models are enabled when the On/Off pin is left open or is
Murata Power Solutions makes Characterization measurements in a closed pulled high to +13.5V with respect to –Vin. Positive-logic devices are disabled
cycle wind tunnel with calibrated airflow. We use both thermocouples and an when the On/Off is grounded or brought to within a low voltage (see specifica-
infrared camera system to observe thermal performance. As a practical matter, tions) with respect to –Vin. For voltage levels for On/Off 2 signal see functional
it is quite difficult to insert an anemometer to precisely measure airflow in specifications.
most applications. Sometimes it is possible to estimate the effective airflow if The restart delay for this module to turn On/Off by the On/Off control pin is
you thoroughly understand the enclosure geometry, entry/exit orifice areas and 100ms.
the fan flowrate specifications.
On/Off 1 or 2 Control status
CAUTION: If you exceed these Derating guidelines, the converter may have
Not ignored Ignored
an unplanned Over Temperature shut down. Also, these graphs are all collected
On/Off 1 or 2 pin P LOGIC N LOGIC P LOGIC N LOGIC
near Sea Level altitude. Be sure to reduce the derating for higher altitude.
OPEN ON OFF ON ON
PULL HIGH ON OFF ON ON
PULL LOW OFF ON ON ON
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SDC_DBE Series.A06∆ Page 31 of 34
DBE/DVE Series
Up to 300W Digital Fully Regulated Intermediate
DC-DC Bus Converter
On/Off 1 can be configured by PMBus command MFR_PRIMARY_ON_OFF_ This is done by correcting IR voltage drops along the output wiring and the
CONFIG (DDh); default configuration is not ignored; required On/Off 1 control
current carrying capacity of PC board etch. This output drop (the difference
pin to be asserted to start the unit. between Sense and Vout when measured at the converter) should not exceed
On/Off 2 can be configured by PMBUS command ON_OFF_CONFIG (02h);
0.5V. Consider using heavier wire if this drop is excessive. Sense inputs also
default configuration is ignored; treat it as always ON. improve the stability of the converter and load system by optimizing the control
DBE's On/Off status is dependent on On/Off 1 control, On/Off 2 control, and
loop phase margin.
OPERATION (PMBus command) status; all three must be ON to turn DBE on; if Note: The Sense input and power Vout lines are internally connected through
one of them is OFF, unit will be turned off.
low value resistors to their respective polarities so that the converter can
operate without external connection to the Sense. Nevertheless, if the Sense
Output Capacitive Load
function is not used for remote regulation, the user should connect +Sense to
These converters do not require external capacitance added to achieve rated
+Vout and –Sense to –Vout at the converter pins.
specifications. Users should only consider adding capacitance to reduce
The remote Sense lines carry very little current. They are also capacitively
switching noise and/or to handle spike current load steps. Install only enough
coupled to the output lines and therefore are in the feedback control loop to
capacitance to achieve noise objectives. Excess external capacitance may
regulate and stabilize the output. As such, they are not low impedance inputs
cause degraded transient response and possible oscillation or instability.
and must be treated with care in PC board layouts. Sense lines on the PCB
should run adjacent to DC signals, preferably Ground. In cables and discrete
Remote Sense Input
wiring, use twisted pair, shielded tubing or similar techniques.
Use the Sense inputs with caution. Sense is normally connected at the load.
Any long, distributed wiring and/or significant inductance introduced into the
Sense inputs compensate for output voltage inaccuracy delivered at the load.
Sense control loop can adversely affect overall system stability. If in doubt, test
Contact and PCB resistance your applications by observing the converter’s output transient response during
losses due to IR drops
step loads. There should not be any appreciable ringing or oscillation. You
+VOUT may also adjust the output trim slightly to compensate for voltage loss in any
−VIN
external filter elements. Do not exceed maximum power ratings.
I OUT
Please observe Sense inputs tolerance to avoid improper operation:
+SENSE
[Vout(+) −Vout(-)] − [Sense(+) −Sense(-)] ≤ 10% of Vout
Sense Current
Output overvoltage protection is monitored at the output voltage pin, not the
ON/OFF
LOAD
Sense pin. Therefore excessive voltage differences between Vout and Sense
CONTROL
together with trim adjustment of the output can cause the overvoltage protec-
Sense Return
tion circuit to activate and shut down the output.
−SENSE
Power derating of the converter is based on the combination of maximum
I OUT Return
output current and the highest output voltage. Therefore the designer must
+VIN
-VOUT
ensure:
(Vout at pins) x (Iout) ≤ (Max. rated output power)
Contact and PCB resistance
losses due to IR drops
Figure 5. Remote Sense Circuit Configuration
PIH Soldering Profile
280
Soldering Guidelines
Murata Power Solutions recommends the specifications below when installing these
230
converters. These specifications vary depending on the solder type. Exceeding these
specifications may cause damage to the product. Be cautious when there is high atmo-
180
spheric humidity. We strongly recommend a mild pre-bake (100° C. for 30 minutes). Your
Reflow Zone
time above 217°C
production environment may differ; therefore please thoroughly review these guidelines
45 -75 sec
130 Soaking Zone
with your process engineers.
(120 Sec max)
<2°C/sec
Wave Solder Operations for through-hole mounted products (THMT) 80
For Sn/Ag/Cu based solders:
30 Preheat Zone
Maximum Preheat Temperature 115° C.
(240 Sec max)
Maximum Pot Temperature 270° C. 0 30 60 90 120 150 180 210 240 270 300
-20
Maximum Solder Dwell Time 7 seconds
For Sn/Pb based solders:
Optimal Peak 245°C, Max Peak 260°C.
Maximum Preheat Temperature 105° C.
Lead-Free Solder type: SAC305
Maximum Pot Temperature 250° C.
Duration Time above Liquidus: 45 to 75 seconds
Maximum Solder Dwell Time 6 seconds
Ramp less than 1°C per second across liquidus
Cooling rate less than 3°C per second
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SDC_DBE Series.A06∆ Page 32 of 34
DBE/DVE Series
Up to 300W Digital Fully Regulated Intermediate
DC-DC Bus Converter
Emissions Performance [3] Conducted Emissions Test Results
Murata Power Solutions measures its products for conducted emissions
against the EN 55022 and CISPR 22 standards. Passive resistance loads are
employed and the output is set to the maximum voltage. If you set up your
own emissions testing, make sure the output load is rated at continuous power
while doing the tests.
The recommended external input and output capacitors (if required) are
included. Please refer to the fundamental switching frequency. All of this
information is listed in the Product Specifications. An external discrete filter is
installed and the circuit diagram is shown below.
VCC
RTN
L1 L2
C1 C2 C3 C4 C5 + +
LOAD
C6 C7 C12
DBE0125V2 DC/DC
-48V
GND
C8 C9 C10 C11 Graph 1. Conducted emissions performance, Positive Line,
CISPR 22, Class B, full load
GND
Figure 6. Conducted Emissions Test Circuit
[1] Conducted Emissions Parts List
Reference Part Number Description Vendor
SMD CERAMIC-100V-
C1, C2, C3, C4, C5 GRM32ER72A105KA01L Murata
1000nF-X7R-1210
SMD CERAMIC 100V-100nF-
C6 GRM319R72A104KA01D Murata
±10%-X7R-1206
COMMON MODE-473uH-
L1, L2 PG0060T Pulse
±25%-A
SMD CERAMIC 630V-0.22uF-
C8, C9, C10, C11 GRM55DR72J224KW01L Murata
±10%-X7R-2220
Aluminum100V-220Uf-
C7 UHE2A221MHD Nichicon
Graph 2. Conducted emissions performance, Negative Line,
±10%-long lead
CISPR 22, Class B, full load
C12 NA
[4] Layout Recommendations
[2] Conducted Emissions Test Equipment Used
Most applications can use the filtering which is already installed inside the
Hewlett Packard HP8594L Spectrum Analyzer – S/N 3827A00153
converter or with the addition of the recommended external capacitors. For
2Line V-networks LS1-15V 50Ω/50Uh Line Impedance Stabilization Network
greater emissions suppression, consider additional filter components and/or
shielding. Emissions performance will depend on the user’s PC board layout,
the chassis shielding environment and choice of external components. Please
refer to Application Note GEAN-02 for further discussion.
Since many factors affect both the amplitude and spectra of emissions, we
recommend using an engineer who is experienced at emissions suppression.
www.murata-ps.com/support
SDC_DBE Series.A06∆ Page 33 of 34
DBE/DVE Series
Up to 300W Digital Fully Regulated Intermediate
DC-DC Bus Converter
Vertical Wind Tunnel
Murata Power Solutions employs a computer controlled
custom-designed closed loop vertical wind tunnel, infrared
video camera system, and test instrumentation for accurate
airflow and heat dissipation analysis of power products.
The system includes a precision low flow-rate anemometer,
IR Transparent
optical window variable speed fan, power supply input and load controls,
Variable
temperature gauges, and adjustable heating element.
Unit under
speed fan
test (UUT) The IR camera monitors the thermal performance of the
Unit Under Test (UUT) under static steady-state conditions. A
IR Video
special optical port is used which is transparent to infrared
Camera
wavelengths.
Both through-hole and surface mount converters are
soldered down to a 10" x 10" host carrier board for realistic
heat absorption and spreading. Both longitudinal and trans-
verse airflow studies are possible by rotation of this carrier
Heating
board since there are often significant differences in the heat
element
dissipation in the two airflow directions. The combination of
Precision
adjustable airflow, adjustable ambient heat, and adjustable
low-rate
Input/Output currents and voltages mean that a very wide
anemometer
range of measurement conditions can be studied.
3” below UUT
The collimator reduces the amount of turbulence adjacent
to the UUT by minimizing airflow turbulence. Such turbu-
lence influences the effective heat transfer characteristics
Ambient
and gives false readings. Excess turbulence removes more
temperature
heat from some surfaces and less heat from others, possibly
sensor
causing uneven overheating.
Both sides of the UUT are studied since there are differ-
Airflow
ent thermal gradients on each side. The adjustable heating
collimator
element and fan, built-in temperature gauges, and no-contact
IR camera mean that power supplies are tested in real-world
conditions.
Figure 7. Vertical Wind Tunnel
This product is subject to the following operating requirements
Murata Power Solutions, Inc.
and the Life and Safety Critical Application Sales Policy:
11 Cabot Boulevard, Mansfield, MA 02048-1151 U.S.A.
Refer to: http://www.murata-ps.com/requirements/
ISO 9001 and 14001 REGISTERED
Murata Power Solutions, Inc. makes no representation that the use of its products in the circuits described herein, or the use of other
technical information contained herein, will not infringe upon existing or future patent rights. The descriptions contained herein do not imply
the granting of licenses to make, use, or sell equipment constructed in accordance therewith. Specifications are subject to change without
notice. © 2017 Murata Power Solutions, Inc.
www.murata-ps.com/support
SDC_DBE Series.A06∆ Page 34 of 34
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