MURATA POWER SOLUTIONS UEE-3.3/30-D48NB-C

UEE Series www.murata-ps.com Isolated, High-Density, Eighth-Brick DOSA Low Profi le DC-DC Converters Output (V) Current (A) Nominal Input (V) 3.3 15 48 3.3 25 48 3.3 30 48 5 10 48 F For effi or effi cient, cient, fully isola fully isolated DC po ted DC power in the smallest space, wer in the smallest space, the UEE the UEE open frame DC-DC converter series fi open frame DC-DC converter series fi t in industr t in industry-standard y-standard “eighth “eighth T Typical units ypical units brick” brick” outline dimensions and mounting pins (on quarter outline dimensions and mounting pins (on quarter-brick pinout) -brick pinout) or surface mount option. or surface mount option. FEATURES  Interleaved synchronous rectifi cation yields high effi ciency over 90%  36 to 75 Vdc input range (48V nominal) PRODUCT OVERVIEW  Outstanding thermal performance and derating Units are offered with a fi xed output voltage and and automatically restarts the converter when the  Low profi le 0.40" height with 0.9" x 2.3" outline current up to 30 Amps. UEEs operate over a wide fault is removed. dimensions temperature range (up to +85°C at moderate An On/Off control input enables phased startup  Fully isolated, 2250 Vdc (BASIC) insulation airfl ow) with full rated power. Synchronous rectifi er and shutdown in multi-voltage applications. UEEs  Industry standard DOSA eighth-brick pinout and topology yields excellent effi ciency. include a Sense input to correct for ohmic losses. A package and surface mount (SMT) option UEEs achieve these impressive mechanical and trim input may be connected to a user’s adjustment  environmental specs while delivering excellent potentiometer or trim resistors for output voltage Extensive self-protection and short circuit electrical performance in an industry standard calibration. features DOSA compatible through-hole package or surface UEEs include industry-standard safety certifi -  On/Off control, trim and sense functions mount option. The unit is fully protected against cations and BASIC I/O insulation provides input/  Fully protected against temperature and voltage input undervoltage, output overcurrent and short output isolation to 2250V. Radiation and conducted limits circuit. An on-board temperature sensor shuts emission testing is performed to widely accepted  RoHS-6 compliant down the converter if thermal limits are reached EMC standards.  UL/IEC 60950-1 and CAN/CSA C22.2 No. 60950- 1, 2nd Edition safety approvals F1 +Vin (1) +Vout (8) Barrier External On/Off DC Control Controller Power (2) and Power Source Open = On Reference and Error Amplifier Trim (6) logic) -Vin (3) -Vout (4) Figure 1. Connection Diagram Typical topology is shown. Murata Power Solutions recommends an external fuse. For full details go to REG.-Nr C457 . www.murata-ps.com/rohs www.murata-ps.com/support SDC_UEE-Series.D02 Page 1 of 34 UEE Series Isolated, High-Density, Eighth-Brick DOSA Low Profile DC-DC Converters PERFORMANCE SPECIFICATIONS SUMMARY AND ORDERING GUIDE Output Input Ripple & Noise IIN, no IIN, full (mVp-p) Regulation (max.) Efficiency Package VOUT IOUT Power VIN Nom. Range load load Model Family (V) (A) (W) Typ. Max. Line Load (V) (V) (mA) (A) Min. Typ. Case Pinout UEE-3.3/15-D48 3.3 15 50 50 70 ±0.1% ±0.1% 48 36-75 30 1.15 88% 90% C56 P32 UEE-3.3/25-D48 3.3 25 82.5 30 60 ±0.1% ±0.2% 48 36-75 100 2.29 88% 90% C56 P32 UEE-3.3/30-D48 3.3 30 99 30 60 ±0.1% ±0.2% 48 36-75 100 2.29 88% 90% C56 P32 UEE-5/10-D48 5 10 50 30 60 ±0.125% ±0.25% 48 36-75 80 1.17 90% 92.5% C56 P32 no external input capacitor. All capacitors are low ESR types. Caps are layout dependent. These ➀ Please refer to the model number structure for additional ordering part numbers and options. capacitors are necessary to accommodate our test equipment and may not be required in your ➁ All specifications are typical unless noted. General conditions for Specifications are +25 deg.C, applications. All models are stable and regulate within spec under no-load conditions. Vin=nominal, Vout=nominal (no trim installed), full rated load. Adequate airflow must be supplied ➂ Some models are pending safety certification. for extended testing under power. All models are tested and specified with external 1µF and 10 µF paralleled output capacitors and PART NUMBER STRUCTURE U EE - 3.3 / 30 - D48 N M B H Lx - C Output Configuration: RoHS Hazardous Materials compliance U = Unipolar/Single C = RoHS6 (does not claim EU RoHS exemption 7b–lead in solder), standard Y = RoHS5 (with lead), optional, special quantity order Pin Length Option (Through-hole packages only) Eighth-Brick Package Blank = Standard pin length 0.180 inches (4.6mm) L1 = Pin length 0.110 inches (2.79mm) ➀ L2 = Pin length 0.145 inches (3.68mm) ➀ Nominal Output Voltage Conformal coating (optional) Blank = no coating, standard H = Coating added, optional, special quantity order Maximum Rated Output (not available on SMT models) Current in Amps Baseplate (optional, not available on UEE-3.3/15-D48, UEE-5/10-D48 models or SMT models) Blank = No baseplate, standard Input Voltage Range: B = Baseplate installed, optional, special quantity order D48 = 36-75V, 48V nominal Surface Mount (SMT models cannot accept the baseplate) Blank = Thru-hole pin mount, no SMT M = Surface mount (MSL Rating 2a) ➁ On/Off Control Logic N = Negative logic, standard P = Positive logic, optional ➀ Special quantity order is required; samples available with standard pin length only. ➁ SMT (M) versions not available in sample quantities. ➂ Some model number combinations may not be available. See website or contact your local Murata sales representative. www.murata-ps.com/support SDC_UEE-Series.D02 Page 2 of 34 UEE Series Isolated, High-Density, Eighth-Brick DOSA Low Profile DC-DC Converters FUNCTIONAL SPECIFICATIONS, UEE-3.3/15-D48 ABSOLUTE MAXIMUM RATINGS Conditions ➀ Minimum Typical/Nominal Maximum Units Input Voltage, Continuous 0 80 Vdc Operating or non-operating, Input Voltage, Transient 0 100 Vdc 100 mS max. duration Isolation Voltage Input to output 2250 Vdc Input Reverse Polarity None, install external fuse None Vdc On/Off Remote Control Power on or off, referred to -Vin -0.8 13.5 Vdc Output Power 0 50 W Current-limited, no damage, Output Current 0 15 A short-circuit 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 or recommended. INPUT Conditions ➀ ➂ Operating voltage range 36 48 75 Vdc Recommended External Fuse Fast blow 10 A Start-up threshold Rising input voltage 33 34 35 Vdc Undervoltage shutdown Falling input voltage 31 32 33 Vdc Overvoltage shutdown None Vdc Reverse Polarity Protection None, install external fuse None Vdc Internal Filter Type Pi Input current Full Load Conditions Vin = nominal 1.15 1.18 A Low Line Vin = minimum 1.53 1.58 A 2 Inrush Transient 0.01 0.03 A -Sec. Output in Short Circuit 72 100 mA No Load Iout = minimum, unit = ON 30 50 mA Standby Mode (Off, UV, OT) 4.6 10 mA Reflected (back) ripple current ➁ Measured at input with specified filter 30 mA, P-P GENERAL and SAFETY Efficiency Vin = 48V, full load 88.0 90.0 % Vin = min, full load 88.0 90.0 % Isolation Isolation Voltage, input to output No baseplate 2250 Vdc Isolation Voltage, input to baseplate N/A N/A Vdc Isolation Voltage, output to baseplate N/A N/A Vdc Insulation Safety Rating basic Isolation Resistance 10 MΩ Isolation Capacitance 1000 pF Certified to UL-60950-1, CSA-C22.2 No.60950-1, Safety Yes IEC 60950-1, 2nd edition Per Telcordia SR-332, issue 1, class 3, ground 6 Calculated MTBF 2.3 Hours x 10 fixed, Tcase = +25°C DYNAMIC CHARACTERISTICS Fixed Switching Frequency 300 330 360 KHz Startup Time Power on to Vout regulated 10 mS Startup Time Remote ON to Vout regulated 10 mS 50-75-50% load step, settling time to within Dynamic Load Response 220 300 µSec ±1% of Vout Dynamic Load Peak Deviation same as above ±150 ±200 mV FEATURES and OPTIONS Remote On/Off Control ➃ “N” suffix: Negative Logic, ON state ON=Ground pin or external voltage -0.8 1 Vdc Negative Logic, OFF state OFF=Pin open or external voltage 2.5 13.5 Vdc Control Current sinking 1 2 mA “P” suffix: Positive Logic, ON state ON=Pin open or external voltage 2.5 13.5 V Positive Logic, OFF state OFF=Ground pin or external voltage -0.8 1 V Control Current sinking 1 2 mA BasePlate "B" suffix N/A Conformal Coating "H" suffix optional www.murata-ps.com/support SDC_UEE-Series.D02 Page 3 of 34 UEE Series Isolated, High-Density, Eighth-Brick DOSA Low Profile DC-DC Converters FUNCTIONAL SPECIFICATIONS, UEE-3.3/15-D48 (CONT.) OUTPUT Conditions ➀ Minimum Typical/Nominal Maximum Units Total Output Power 0.0 49.5 50 W Voltage Nominal Output Voltage No trim 3.267 3.30 3.333 Vdc Setting Accuracy At 50% load -1 +1 % of Vset. Output Voltage Range User-adjustable -10 +10 % of Vnom. Overvoltage Protection Via magnetic feedback 3.7 4.3 5.1 Vdc Current Output Current Range 0.0 15 15 A Minimum Load No minimum load Current Limit Inception 98% of Vnom., after warmup 18 22 26 A Short Circuit Hiccup technique, autorecovery within ±1.25% Short Circuit Current 1.97 3 A of Vout Short Circuit Duration Output shorted to ground, no damage Continuous (remove short for recovery) Short circuit protection method Current limiting Yes Regulation Line Regulation Vin=min. to max., Vout=nom., Iout=nom. ±0.1 % of Vout Load Regulation Iout=min. to max., Vin=48V ±0.1 % of Vout Ripple and Noise ➁ 5 Hz- 20 MHz BW 50 70 mV pk-pk Temperature Coefficient At all outputs ±0.0046 ±0.005 % of Vout./°C Maximum Capacitive Loading Cap. ESR=<0.02Ω, full resistive load 0 7500 μF Remote Sense Compliance Sense connected at load 10 % of Vout MECHANICAL (Through Hole Models) Outline Dimensions (no baseplate) C56 case 2.3x0.9x0.40 max. Inches (Please refer to outline drawing) LxWxH 58.4x22.9x10.16 mm Outline Dimensions (with baseplate) 2.3x0.9x0.50 Inches 58.4x22.9x12.7 mm Weight No baseplate 1.09 Ounces No baseplate 31 Grams With baseplate N/A Ounces With baseplate N/A Grams Through Hole Pin Diameter 0.04 & 0.062 Inches 1.016&1.524 mm Through Hole Pin Material Copper alloy TH Pin Plating Metal and Thickness Nickel subplate 100-299 µ-inches Gold overplate 10-31 µ-inches Baseplate Material Aluminum ENVIRONMENTAL Operating Ambient Temperature Range No Derating, 100 LFM, full power, vertical mount -40 85 °C Operating Case Temperature No derating -40 115 °C Storage Temperature Vin = Zero (no power) -55 125 °C Thermal Protection/Shutdown Measured in center 115 125 135 °C Electromagnetic Interference External filter is required Conducted, EN55022/CISPR22 B Class Relative humidity, non-condensing To +85°C 10 90 %RH Altitude must derate -1%/1000 feet -500 10,000 feet -152 3048 meters RoHS rating RoHS-6 Notes ➄ NOTICE—Please use only this customer data sheet as product documentation when laying out your ➀ Unless otherwise noted, all specifications are at nominal input voltage, nominal output voltage and printed circuit boards and applying this product into your application. Do NOT use other materials as full load. official documentation such as advertisements, product announcements, or website graphics. General conditions are +25˚ Celsius ambient temperature, near sea level altitude, natural convec- We strive to have all technical data in this customer data sheet highly accurate and complete. This cus- tion airflow. tomer data sheet is revision-controlled and dated. The latest customer data sheet revision is normally All models are tested and specified with external parallel 1 µF and 10 µF multi-layer ceramic on our website (www.murata-ps.com) for products which are fully released to Manufacturing. Please be output capacitors. especially careful using any data sheets labeled “Preliminary” since data may change without notice. No external input capacitor is used. All capacitors are low-ESR types wired close to the converter. The pinout (Pxx) and case (Cxx) designations (typically P32 or C56) refer to a generic family of These capacitors are necessary for our test equipment and may not be needed in the user’s ap- closely related information. It may not be a single pinout or unique case outline. Please be aware plication. of small details which may affect your application and PC board layouts. Study the Mechanical ➁ Input (back) ripple current is tested and specified over 5 Hz to 20 MHz bandwidth. Input filtering is Outline drawings, Input/Output Connection table and all footnotes very carefully. Please contact Cbus=220 µF, Cin=33 µF and Lbus=12 µH. Murata Power Solutions if you have any questions. ➂ All models are stable and regulate to specification under no load. ➃ The Remote On/Off Control is referred to -Vin. For external transistor control, use open collector logic or equivalent. www.murata-ps.com/support SDC_UEE-Series.D02 Page 4 of 34 UEE Series Isolated, High-Density, Eighth-Brick DOSA Low Profi le DC-DC Converters TYPICAL PERFORMANCE DATA AND OSCILLOGRAMS, UEE-3.3/15-D48 UEE-3.3/15-D48 Effi ciency and Power Dissipation @ Ta = +25°C UEE-3.3/15-D48 Maximum Current Temperature Derating at Sea Level (Vin = 48V, no baseplate, airfl ow is from Vin to Vout) 95 9 16 14 90 8 12 100 to 400 LFM 85 7 10 80 6 Vin = 75V 8 75 Vin = 48V 5 6 Vin = 36V 70 4 4 2 65 3 0 60 2 30 35 40 45 50 55 60 65 70 75 80 85 Power Dissipation (Vin = 48V) Ambient Temperature (ºC) 55 1 50 0 1 3 5 7 9 11 13 15 Load Current (A) UEE-3.3/15-D48 Maximum Current Temperature Derating at Sea Level Step Load Transient Response (Vin=48V, Vout=nominal, Cload=0, Iout=75% to 50% of full (Vin = 48V, no baseplate, airfl ow is from –Vin to +Vin) load, Ta=+25˚C.) Trace 1=Vout, 100 mV/div., 500 µS/div. 16 14 12 100 to 400 LFM 10 8 6 4 2 0 30 35 40 45 50 55 60 65 70 75 80 85 Ambient Temperature (ºC) Step Load Transient Response (Vin=48V, Vout=nominal, Cload=0, Iout=50% to 75% of full Step Load Transient Response (Vin=48V, Vout=nominal, Cload=0, Iout=50 to 75 to 50% of load, Ta=+25˚C.) Trace 1=Vout, 100 mV/div., 500 µS/div. full load, Ta=+25˚C.) Trace 1=Vout, 100 mV/div., 2 mS/div. www.murata-ps.com/support SDC_UEE-Series.D02 Page 5 of 34 Output Current (A) Efficiency (%) Power Dissipation (Watts) Output Current (A) UEE Series Isolated, High-Density, Eighth-Brick DOSA Low Profi le DC-DC Converters TYPICAL PERFORMANCE DATA AND OSCILLOGRAMS, UEE-3.3/15-D48 Power On Start Up (Vin=48V, Vout=nom., Iout=15A, Cload=0, Ta=+25° C., Power On Start Up (Vin=48V, Vout=nom., Iout=0A, Cload=0, Ta=+25° C., ScopeBW=20Mhz, Trace 2=Vout, Trace 4=Enable. ScopeBW=20Mhz, Trace 2=Vout, Trace 4=Enable Power On Start Up (Vin=48V, Vout=nom., Iout=15A, Cload=7500uF, Ta=+25° C., Output Ripple and noise (Vin=48V, Vout=nom., Iout=15A, Cload=0, Ta=+25° C., ScopeBW=20Mhz, Trace 2=Vout, Trace 4=Enable ScopeBW=20Mhz) Output Ripple and noise (Vin=48V, Vout=nom., Iout=0A, Cload=0, Ta=+25° C., Thermal image with hot spot at full load current with 85 °C ambient; air is fl owing at 100 ScopeBW=20Mhz) LFM. Air is fl owing across the converter from -Vin to +Vin at 48V input. Identifi able and recommended maximum value to be verifi ed in application. Q9, Max temp= 120 °C/IPC9592 derating guidelines. www.murata-ps.com/support SDC_UEE-Series.D02 Page 6 of 34 UEE Series Isolated, High-Density, Eighth-Brick DOSA Low Profi le DC-DC Converters Emissions Performance, Model UEE-3.3/15-D48 [3] Conducted Emissions Test Results Murata Power Solutions measures its products for radio frequency 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 Specifi cations. An external discrete fi lter is installed and the circuit diagram is shown below. Return L1 External + + DC Power C1 C2 C3 C6 Source LOAD -Vsource Graph 1. Conducted emissions performance, Positive Line, C4 C5 NEG. POS. CISPR 22, Class A, full load DC/DC Converter LINE LINE Ground Spectrum Analyzer Figure 2. Conducted Emissions Test Circuit [1] Conducted Emissions Parts List Designation Value Part Number Description Vendor SMD Ceramic, 100V, 1000nF, C1 1 µF GRM32ER72A105KA01L Murata X7R-1210 SMD Ceramic, 100V, 100nF C2 100 nF GRM319R72A104KA01D Murata ±10%, X7R-1206 Common Mode choke, L1 1320 µH LB16H1324 1320 µH, ±25%, 4A, R5K, High Light *21*21*12.5mm SMD Ceramic, 1000V, 0.022 C4, C5 0.022 µF GRM32DR73A223KW01L Murata µF, ±10%, X7R-1210 Alum. electrolytic, 100V, 220 C3 220 µF UHE2A221MHD Nichicon µF, ±10%, long lead C6 Not used Not used for this model Graph 2. Conducted emissions performance, Negative Line, [2] Conducted Emissions Test Equipment Used CISPR 22, Class A, full load Spectrum Analyzer – Hewlett Packard HP8594L [4] Layout Recommendations Line Impedance Stabilization Network (LISN) – 2 Line V-Networks LS1-15V, Most applications can use the fi ltering which is already installed inside the 50 Ω, 50 µH converter or with the addition of the recommended external capacitors. For greater emissions suppression, consider additional fi lter 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 GEAN02 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_UEE-Series.D02 Page 7 of 34 LISN UNIT UNDER TEST UEE Series Isolated, High-Density, Eighth-Brick DOSA Low Profile DC-DC Converters FUNCTIONAL SPECIFICATIONS, UEE-3.3/25-D48 ABSOLUTE MAXIMUM RATINGS Conditions ➀ Minimum Typical/Nominal Maximum Units Input Voltage, Continuous 0 80 Vdc Operating or non-operating, Input Voltage, Transient 0 100 Vdc 100 mS max. duration Isolation Voltage Input to output 2250 Vdc Input Reverse Polarity None, install external fuse None Vdc On/Off Remote Control Power on or off, referred to -Vin 0 13.5 Vdc Output Power 0 83.3 W Current-limited, no damage, Output Current 0 25 A short-circuit 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 or recommended. INPUT Conditions ➀ ➂ Operating voltage range 36 48 75 Vdc Recommended External Fuse Fast blow 10 A Start-up threshold Rising input voltage 33 34 35 Vdc Undervoltage shutdown Falling input voltage 31 32 33 Vdc Overvoltage shutdown None Vdc Reverse Polarity Protection None, install external fuse None Vdc Internal Filter Type Pi Input current Full Load Conditions Vin = nominal 2.29 2.37 A Low Line Vin = minimum 3.06 3.16 A 2 Inrush Transient 0.05 0.6 A -Sec. Output in Short Circuit 150 300 mA No Load Iout = minimum, unit = ON 100 150 mA Standby Mode (Off, UV, OT) 5 10 mA Reflected (back) ripple current ➁ Measured at input with specified filter 30 mA, P-P GENERAL and SAFETY Efficiency Vin = 48V, full load 88.0 90.0 % Vin = min, full load 88.0 90.0 % Isolation Isolation Voltage, input to output No baseplate 2250 Vdc Isolation Voltage, input to baseplate With baseplate 1500 Vdc Isolation Voltage, output to baseplate With baseplate 1500 Vdc Insulation Safety Rating basic Isolation Resistance 10 MΩ Isolation Capacitance 1000 pF Certified to UL-60950-1, CSA-C22.2 No.60950-1, Safety Yes IEC 60950-1, 2nd edition Per Telcordia SR-332, issue 1, class 3, ground 6 Calculated MTBF 2.5 Hours x 10 fixed, Tcase = +25°C DYNAMIC CHARACTERISTICS Fixed Switching Frequency 320 350 380 KHz Startup Time Power on to Vout regulated 10 mS Startup Time Remote ON to Vout regulated 10 mS 50-75-50% load step, settling time to within Dynamic Load Response 150 300 µSec ±1% of Vout Dynamic Load Peak Deviation same as above ±150 ±200 mV FEATURES and OPTIONS Remote On/Off Control ➃ “N” suffix: Negative Logic, ON state ON=Ground pin or external voltage -0.8 1 Vdc Negative Logic, OFF state OFF=Pin open or external voltage 2.5 13.5 Vdc Control Current sinking 1 2 mA “P” suffix: Positive Logic, ON state ON=Pin open or external voltage 2.5 13.5 V Positive Logic, OFF state OFF=Ground pin or external voltage -0.8 1 V Control Current sinking 1 2 mA Base Plate "B" suffix optional Conformal Coating "H" suffix optional www.murata-ps.com/support SDC_UEE-Series.D02 Page 8 of 34 UEE Series Isolated, High-Density, Eighth-Brick DOSA Low Profile DC-DC Converters FUNCTIONAL SPECIFICATIONS, UEE-3.3/25-D48 (CONT.) OUTPUT Conditions ➀ Minimum Typical/Nominal Maximum Units Total Output Power 0.0 82.5 83.3 W Voltage Nominal Output Voltage No trim 3.267 3.30 3.333 Vdc Setting Accuracy At 50% load -1 +1 % of Vset. Output Voltage Range User-adjustable -10 +10 % of Vnom. Overvoltage Protection Via magnetic feedback 3.7 4 4.9 Vdc Current Output Current Range 0.0 25 25 A Minimum Load No minimum load Current Limit Inception 98% of Vnom., after warmup 28 31 34 A Short Circuit Hiccup technique, autorecovery within ±1.25% Short Circuit Current 3 4 A of Vout Short Circuit Duration Output shorted to ground, no damage Continuous (remove short for recovery) Short circuit protection method Current limiting Yes Regulation Line Regulation Vin=min. to max., Vout=nom., Iout=nom. ±0.1 % of Vout Load Regulation Iout=min. to max., Vin=48V ±0.2 % of Vout Ripple and Noise ➁ 5 Hz- 20 MHz BW 30 60 mV pk-pk Temperature Coefficient At all outputs 0.02 % of Vout./°C Maximum Capacitive Loading Cap. ESR=<0.02Ω, full resistive load 0 10,000 μF Remote Sense Compliance Sense connected at load 10 % of Vout MECHANICAL (Through Hole Models) Outline Dimensions (no baseplate) C56 case 2.3x0.9x0.40 max. Inches (Please refer to outline drawing) LxWxH 58.4x22.9x10.16 mm Outline Dimensions (with baseplate) 2.3x0.9x0.50 Inches 58.4x22.9x12.7 mm Weight No baseplate 1.09 Ounces No baseplate 31 Grams With baseplate TBD Ounces With baseplate TBD Grams Through Hole Pin Diameter 0.04 & 0.062 Inches 1.016&1.524 mm Through Hole Pin Material Copper alloy TH Pin Plating Metal and Thickness Nickel subplate 100-299 µ-inches Gold overplate 10-31 µ-inches Baseplate Material Aluminum ENVIRONMENTAL Operating Ambient Temperature Range No Derating, 100 LFM, full power, vertical mount -40 85 °C Operating Case Temperature No derating -40 125 °C Storage Temperature Vin = Zero (no power) -55 125 °C Thermal Protection/Shutdown Measured in center 115 125 135 °C Electromagnetic Interference External filter is required Conducted, EN55022/CISPR22 B Class Relative humidity, non-condensing To +85°C 10 90 %RH Altitude must derate -1%/1000 feet -500 10,000 feet -152 3048 meters RoHS rating RoHS-6 Notes ➄ NOTICE—Please use only this customer data sheet as product documentation when laying out your ➀ Unless otherwise noted, all specifications are at nominal input voltage, nominal output voltage and printed circuit boards and applying this product into your application. Do NOT use other materials as full load. official documentation such as advertisements, product announcements, or website graphics. General conditions are +25˚ Celsius ambient temperature, near sea level altitude, natural convec- We strive to have all technical data in this customer data sheet highly accurate and complete. This cus- tion airflow. tomer data sheet is revision-controlled and dated. The latest customer data sheet revision is normally All models are tested and specified with external parallel 1 µF and 10 µF multi-layer ceramic on our website (www.murata-ps.com) for products which are fully released to Manufacturing. Please be output capacitors. especially careful using any data sheets labeled “Preliminary” since data may change without notice. No external input capacitor is used. All capacitors are low-ESR types wired close to the converter. The pinout (Pxx) and case (Cxx) designations (typically P32 or C56) refer to a generic family of These capacitors are necessary for our test equipment and may not be needed in the user’s ap- closely related information. It may not be a single pinout or unique case outline. Please be aware plication. of small details which may affect your application and PC board layouts. Study the Mechanical ➁ Input (back) ripple current is tested and specified over 5 Hz to 20 MHz bandwidth. Input filtering is Outline drawings, Input/Output Connection table and all footnotes very carefully. Please contact Cbus=220 µF, Cin=33 µF and Lbus=12 µH. Murata Power Solutions if you have any questions. ➂ All models are stable and regulate to specification under no load. ➃ The Remote On/Off Control is referred to -Vin. For external transistor control, use open collector logic or equivalent. www.murata-ps.com/support SDC_UEE-Series.D02 Page 9 of 34 UEE Series Isolated, High-Density, Eighth-Brick DOSA Low Profile DC-DC Converters TYPICAL PERFORMANCE DATA AND OSCILLOGRAMS, UEE-3.3/25-D48 UEE-3.3/25-D48 Efficiency and Power Dissipation @ Ta = +25°C UEE-3.3/25-D48 Maximum Current Temperature Derating at Sea Level (Vin = 48V, no baseplate. Airflow direction is longitudinal, from Vin to Vout.) 100 15 40 14 95 13 30 90 12 11 85 10 Vin = 75V 20 80 9 Vin = 48V 100 LFM 75 8 Vin = 36V 200 LFM 7 10 70 300 LFM 6 400 LFM 65 5 0 4 60 30 35 40 45 50 55 60 65 70 75 80 85 Power Dissipation (Vin = 48V) 3 55 Ambient Temperature (ºC) 2 50 1 3 6 9 12 15 18 21 24 Load Current (A) UEE-3.3/25-D48 Maximum Current Temperature Derating at Sea Level UEE-3.3/25-D48 Maximum Current Temperature Derating at Sea Level (Vin = 48V, with baseplate. Airflow direction is from Vin to Vout.) (Vin = 48V, with baseplate. Airflow direction is transverse from +Vin to -Vin.) 30 40 25 30 20 100 LFM 20 200 LFM 100 LFM 15 300 LFM 200 LFM 300 LFM 400 LFM 10 10 400 LFM 5 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 (ºC) Ambient Temperature (ºC) UEE-3.3/25-D48 Maximum Current Temperature Derating at Sea Level UEE-3.3/25-D48 Maximum Current Temperature Derating at Sea Level (Vin = 48V, no baseplate. Airflow direction is transverse.) (Vin = 48V, no baseplate. Airflow direction is transverse.) 40 30 30 25 20 20 Natural Convection 100 LFM 100 LFM 200 LFM 200 LFM 15 10 300 LFM 300 LFM 400 LFM 400 LFM 10 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 (ºC) Ambient Temperature (ºC) www.murata-ps.com/support SDC_UEE-Series.D02 Page 10 of 34 Output Current (A) Output Current (A) Efficiency (%) Power Dissipation (Watts) Output Current (A) Output Current (A) Output Current (A) UEE Series Isolated, High-Density, Eighth-Brick DOSA Low Profi le DC-DC Converters TYPICAL PERFORMANCE DATA AND OSCILLOGRAMS, UEE-3.3/25-D48 Step Load Transient Response (Slew=1A / μSec.,Vin=48V., Cload=0, Iout=22.5A to 15A) Step Load Transient Response (Slew=1A / μSec.,Vin=48V., Cload=0, Iout=15A to 22.5A) On/Off Enable Delay (Vin=48V, Vout=nom., Iout=25A, Cload=0, Ta=+25° C., ScopeBW=20Mhz, Trace 2=Vout, Trace 4=Enable. On/Off Enable Delay (Vin=48V, Vout=nom., Iout=0A, Cload=0, Ta=+25° C., On/Off Enable Delay (Vin=48V, Vout=nom., Iout=25A, Cload=10uF, Ta=+25° C., ScopeBW=20Mhz, Trace 2=Vout, Trace 4=Enable. ScopeBW=20Mhz, Trace 2=Vout, Trace 4=Enable. www.murata-ps.com/support SDC_UEE-Series.D02 Page 11 of 34 UEE Series Isolated, High-Density, Eighth-Brick DOSA Low Profi le DC-DC Converters TYPICAL PERFORMANCE DATA AND OSCILLOGRAMS, UEE-3.3/25-D48 Output Ripple and noise (Vin=48V, Vout=nom., Iout=25A, Cload=0, Ta=+25° C., Output Ripple and noise (Vin=48V, Vout=nom., Iout=25A, Cload=0, Ta=+25° C., ScopeBW=20Mhz) ScopeBW=20Mhz) Thermal image with hot spot at full load current with 85 °C ambient; air is fl owing at 200 LFM. Air is fl owing across the converter from Vin to Vout at 48V input. Identifi able and recommended maximum value to be verifi ed in application. T1 & Q1, Max temp= 120 °C/IPC9592 derating guidelines. www.murata-ps.com/support SDC_UEE-Series.D02 Page 12 of 34 UEE Series Isolated, High-Density, Eighth-Brick DOSA Low Profi le DC-DC Converters Emissions Performance, Model UEE-3.3/25-D48 [3] Conducted Emissions Test Results Murata Power Solutions measures its products for radio frequency 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 Specifi cations. An external discrete fi lter is installed and the circuit diagram is shown below. Return L1 External + + DC Power C1 C2 C3 C6 Source LOAD -Vsource Graph 3. Conducted emissions performance, Positive Line, C4 C5 NEG. POS. CISPR 22, Class A, full load DC/DC Converter LINE LINE Ground Spectrum Analyzer Figure 3. Conducted Emissions Test Circuit [1] Conducted Emissions Parts List Designation Value Part Number Description Vendor SMD Ceramic, 100V, 1000nF, C1 1 µF GRM32ER72A105KA01L Murata X7R-1210 SMD Ceramic, 100V, 100nF C2 100 nF GRM319R72A104KA01D Murata ±10%, X7R-1206 Common Mode choke, L1 1320 µH LB16H1324 1320 µH, ±25%, 4A, R5K, High Light *21*21*12.5mm SMD Ceramic, 1000V, 0.022 C4, C5 0.022 µF GRM32DR73A223KW01L Murata µF, ±10%, X7R-1210 Alum. electrolytic, 100V, 220 C3 220 µF UHE2A221MHD Nichicon µF, ±10%, long lead C6 Not used Not used for this model Graph 4. Conducted emissions performance, Negative Line, [2] Conducted Emissions Test Equipment Used CISPR 22, Class A, full load Spectrum Analyzer – Hewlett Packard HP8594L [4] Layout Recommendations Line Impedance Stabilization Network (LISN) – 2 Line V-Networks LS1-15V, Most applications can use the fi ltering which is already installed inside the 50 Ω, 50 µH converter or with the addition of the recommended external capacitors. For greater emissions suppression, consider additional fi lter 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 GEAN02 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_UEE-Series.D02 Page 13 of 34 LISN UNIT UNDER TEST UEE Series Isolated, High-Density, Eighth-Brick DOSA Low Profile DC-DC Converters FUNCTIONAL SPECIFICATIONS, UEE-3.3/30-D48 ABSOLUTE MAXIMUM RATINGS Conditions ➀ Minimum Typical/Nominal Maximum Units Input Voltage, Continuous 0 80 Vdc Operating or non-operating, Input Voltage, Transient 0 100 Vdc 100 mS max. duration Isolation Voltage Input to output 2250 Vdc Input Reverse Polarity None, install external fuse None Vdc On/Off Remote Control Power on or off, referred to -Vin 0 13.5 Vdc Output Power 0 100 W Current-limited, no damage, Output Current 0 30 A short-circuit 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 or recommended. INPUT Conditions ➀ ➂ Operating voltage range 36 48 75 Vdc Recommended External Fuse Fast blow 10 A Start-up threshold Rising input voltage 33 34 35 Vdc Undervoltage shutdown Falling input voltage 31 32 33 Vdc Overvoltage shutdown None Vdc Reverse Polarity Protection None, install external fuse None Vdc Internal Filter Type Pi Input current Full Load Conditions Vin = nominal 2.29 2.37 A Low Line Vin = minimum 3.06 3.16 A 2 Inrush Transient 0.05 0.6 A -Sec. Output in Short Circuit 150 300 mA No Load Iout = minimum, unit = ON 100 150 mA Standby Mode (Off, UV, OT) 5 10 mA Reflected (back) ripple current ➁ Measured at input with specified filter 30 mA, P-P GENERAL and SAFETY Efficiency Vin = 48V, full load 88.0 90.0 % Vin = min, full load 88.0 90.0 % Isolation Isolation Voltage, input to output No baseplate 2250 Vdc Isolation Voltage, input to baseplate With baseplate 1500 Vdc Isolation Voltage, output to baseplate With baseplate 1500 Vdc Insulation Safety Rating basic Isolation Resistance 10 MΩ Isolation Capacitance 1000 pF Certified to UL-60950-1, CSA-C22.2 No.60950-1, Safety Yes IEC 60950-1, 2nd edition Per Telcordia SR-332, issue 1, class 3, ground 6 Calculated MTBF 2.5 Hours x 10 fixed, Tcase = +25°C DYNAMIC CHARACTERISTICS Fixed Switching Frequency 320 350 380 KHz Startup Time Power on to Vout regulated 10 mS Startup Time Remote ON to Vout regulated 10 mS 50-75-50% load step, settling time to within Dynamic Load Response 150 300 µSec ±1% of Vout Dynamic Load Peak Deviation same as above ±150 ±200 mV FEATURES and OPTIONS Remote On/Off Control ➃ “N” suffix: Negative Logic, ON state ON=Ground pin or external voltage -0.8 1 Vdc Negative Logic, OFF state OFF=Pin open or external voltage 2.5 13.5 Vdc Control Current sinking 1 2 mA “P” suffix: Positive Logic, ON state ON=Pin open or external voltage 2.5 13.5 V Positive Logic, OFF state OFF=Ground pin or external voltage -0.8 1 V Control Current sinking 1 2 mA Base Plate "B" suffix optional Conformal Coating "H" suffix optional www.murata-ps.com/support SDC_UEE-Series.D02 Page 14 of 34 UEE Series Isolated, High-Density, Eighth-Brick DOSA Low Profile DC-DC Converters FUNCTIONAL SPECIFICATIONS, UEE-3.3/30-D48 (CONT.) OUTPUT Conditions ➀ Minimum Typical/Nominal Maximum Units Total Output Power 0.0 99 100 W Voltage Nominal Output Voltage No trim 3.267 3.30 3.333 Vdc Setting Accuracy At 50% load -1 +1 % of Vset. Output Voltage Range User-adjustable -10 +10 % of Vnom. Overvoltage Protection Via magnetic feedback 3.7 4 4.9 Vdc Current Output Current Range 0.0 30.0 30.0 A Minimum Load No minimum load Current Limit Inception 98% of Vnom., after warmup 35 42 49 A Short Circuit Hiccup technique, autorecovery within ±1.25% Short Circuit Current 3 4 A of Vout Short Circuit Duration Output shorted to ground, no damage Continuous (remove short for recovery) Short circuit protection method Current limiting Yes Regulation Line Regulation Vin=min. to max., Vout=nom., Iout=nom. ±0.1 % of Vout Load Regulation Iout=min. to max., Vin=48V ±0.2 % of Vout Ripple and Noise ➁ 5 Hz- 20 MHz BW 30 60 mV pk-pk Temperature Coefficient At all outputs 0.02 % of Vout./°C Maximum Capacitive Loading Cap. ESR=<0.02Ω, full resistive load 0 10,000 μF Remote Sense Compliance Sense connected at load 10 % of Vout MECHANICAL (Through Hole Models) Outline Dimensions (no baseplate) C56 case 2.3x0.9x0.40 max. Inches (Please refer to outline drawing) LxWxH 58.4x22.9x10.16 mm Outline Dimensions (with baseplate) 2.3x0.9x0.50 Inches 58.4x22.9x12.7 mm Weight No baseplate 1.09 Ounces No baseplate 31 Grams With baseplate TBD Ounces With baseplate TBD Grams Through Hole Pin Diameter 0.04 & 0.062 Inches 1.016&1.524 mm Through Hole Pin Material Copper alloy TH Pin Plating Metal and Thickness Nickel subplate 100-299 µ-inches Gold overplate 10-31 µ-inches Baseplate Material Aluminum ENVIRONMENTAL Operating Ambient Temperature Range No Derating, 100 LFM, full power, vertical mount -40 85 °C Operating Case Temperature No derating -40 125 °C Storage Temperature Vin = Zero (no power) -55 125 °C Thermal Protection/Shutdown Measured in center 115 125 135 °C Electromagnetic Interference External filter is required Conducted, EN55022/CISPR22 B Class Relative humidity, non-condensing To +85°C 10 90 %RH Altitude must derate -1%/1000 feet -500 10,000 feet -152 3048 meters RoHS rating RoHS-6 Notes ➄ NOTICE—Please use only this customer data sheet as product documentation when laying out your ➀ Unless otherwise noted, all specifications are at nominal input voltage, nominal output voltage and printed circuit boards and applying this product into your application. Do NOT use other materials as full load. official documentation such as advertisements, product announcements, or website graphics. General conditions are +25˚ Celsius ambient temperature, near sea level altitude, natural convec- We strive to have all technical data in this customer data sheet highly accurate and complete. This cus- tion airflow. tomer data sheet is revision-controlled and dated. The latest customer data sheet revision is normally All models are tested and specified with external parallel 1 µF and 10 µF multi-layer ceramic on our website (www.murata-ps.com) for products which are fully released to Manufacturing. Please be output capacitors. especially careful using any data sheets labeled “Preliminary” since data may change without notice. No external input capacitor is used. All capacitors are low-ESR types wired close to the converter. The pinout (Pxx) and case (Cxx) designations (typically P32 or C56) refer to a generic family of These capacitors are necessary for our test equipment and may not be needed in the user’s ap- closely related information. It may not be a single pinout or unique case outline. Please be aware plication. of small details which may affect your application and PC board layouts. Study the Mechanical ➁ Input (back) ripple current is tested and specified over 5 Hz to 20 MHz bandwidth. Input filtering is Outline drawings, Input/Output Connection table and all footnotes very carefully. Please contact Cbus=220 µF, Cin=33 µF and Lbus=12 µH. Murata Power Solutions if you have any questions. ➂ All models are stable and regulate to specification under no load. ➃ The Remote On/Off Control is referred to -Vin. For external transistor control, use open collector logic or equivalent. www.murata-ps.com/support SDC_UEE-Series.D02 Page 15 of 34 UEE Series Isolated, High-Density, Eighth-Brick DOSA Low Profi le DC-DC Converters TYPICAL PERFORMANCE DATA AND OSCILLOGRAMS, UEE-3.3/30-D48 UEE-3.3/30-D48 Effi ciency and Power Dissipation @ Ta = +25°C UEE-3.3/30-D48 Maximum Current Temperature Derating at Sea Level (Vin = 48V, no baseplate. Airfl ow direction is longitudinal, from Vin to Vout.) 100 15 40 14 95 13 30 90 12 11 85 10 Vin = 75V 20 80 9 Vin = 48V 100 LFM 75 8 Vin = 36V 200 LFM 7 10 300 LFM 70 6 400 LFM 65 5 0 4 60 30 35 40 45 50 55 60 65 70 75 80 85 Power Dissipation (Vin = 48V) 3 55 Ambient Temperature (ºC) 2 50 1 3 6 9 12 15 18 21 24 27 30 Load Current (A) UEE-3.3/30-D48 Maximum Current Temperature Derating at Sea Level UEE-3.3/30-D48 Maximum Current Temperature Derating at Sea Level (Vin = 48V, with baseplate. Airfl ow direction is from Vin to Vout.) (Vin = 48V, with baseplate. Airfl ow direction is transverse from +Vin to -Vin.) 30 40 25 30 100 LFM 20 200 LFM 100 LFM 20 300 LFM 200 LFM 15 400 LFM 300 LFM 400 LFM 10 10 5 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 (ºC) Ambient Temperature (ºC) UEE-3.3/30-D48 Maximum Current Temperature Derating at Sea Level Step Load Transient Response (Slew=1A / μSec.,Vin=48V., Cload=0, Iout=15A to 22.5A) (Vin = 48V, no baseplate. Airfl ow direction is transverse.) 40 30 20 100 LFM 200 LFM 10 300 LFM 400 LFM 0 30 35 40 45 50 55 60 65 70 75 80 85 Ambient Temperature (ºC) www.murata-ps.com/support SDC_UEE-Series.D02 Page 16 of 34 Output Current (A) Output Current (A) Efficiency (%) Power Dissipation (Watts) Output Current (A) Output Current (A) UEE Series Isolated, High-Density, Eighth-Brick DOSA Low Profi le DC-DC Converters TYPICAL PERFORMANCE DATA AND OSCILLOGRAMS, UEE-3.3/30-D48 Step Load Transient Response (Slew=1A / μSec.,Vin=48V., Cload=0, Iout=22.5A to 15A) On/Off Enable Delay (Vin=48V, Vout=nom., Iout=30A, Cload=0, Ta=+25° C., ScopeBW=20Mhz, Trace 2=Vout, Trace 4=Enable. On/Off Enable Delay (Vin=48V, Vout=nom., Iout=0A, Cload=0, Ta=+25° C., On/Off Enable Delay (Vin=48V, Vout=nom., Iout=30A, Cload=10uF, Ta=+25° C., ScopeBW=20Mhz, Trace 2=Vout, Trace 4=Enable. ScopeBW=20Mhz, Trace 2=Vout, Trace 4=Enable. Output Ripple and noise (Vin=48V, Vout=nom., Iout=30A, Cload=0, Ta=+25° C., Output Ripple and noise (Vin=48V, Vout=nom., Iout=30A, Cload=0, Ta=+25° C., ScopeBW=20Mhz) ScopeBW=20Mhz) www.murata-ps.com/support SDC_UEE-Series.D02 Page 17 of 34 UEE Series Isolated, High-Density, Eighth-Brick DOSA Low Profi le DC-DC Converters TYPICAL PERFORMANCE DATA AND OSCILLOGRAMS, UEE-3.3/30-D48 Thermal image with hot spot at full load current with 85 °C ambient; air is fl owing at 200 LFM. Air is fl owing across the converter from Vin to Vout at 48V input. Identifi able and recommended maximum value to be verifi ed in application. T1 & Q1, Max temp= 120 °C/IPC9592 derating guidelines. www.murata-ps.com/support SDC_UEE-Series.D02 Page 18 of 34 UEE Series Isolated, High-Density, Eighth-Brick DOSA Low Profi le DC-DC Converters Emissions Performance, Model UEE-3.3/30-D48 [3] Conducted Emissions Test Results Murata Power Solutions measures its products for radio frequency 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 Specifi cations. An external discrete fi lter is installed and the circuit diagram is shown below. Return L1 External + + DC Power C1 C2 C3 C6 Source LOAD -Vsource Graph 5. Conducted emissions performance, Positive Line, C4 C5 NEG. POS. CISPR 22, Class A, full load DC/DC Converter LINE LINE Ground Spectrum Analyzer Figure 4. Conducted Emissions Test Circuit [1] Conducted Emissions Parts List Designation Value Part Number Description Vendor SMD Ceramic, 100V, 1000nF, C1 1 µF GRM32ER72A105KA01L Murata X7R-1210 SMD Ceramic, 100V, 100nF C2 100 nF GRM319R72A104KA01D Murata ±10%, X7R-1206 Common Mode choke, L1 1320 µH LB16H1324 1320 µH, ±25%, 4A, R5K, High Light *21*21*12.5mm SMD Ceramic, 1000V, 0.022 C4, C5 0.022 µF GRM32DR73A223KW01L Murata µF, ±10%, X7R-1210 Alum. electrolytic, 100V, 220 C3 220 µF UHE2A221MHD Nichicon µF, ±10%, long lead C6 Not used Not used for this model Graph 6. Conducted emissions performance, Negative Line, [2] Conducted Emissions Test Equipment Used CISPR 22, Class A, full load Spectrum Analyzer – Hewlett Packard HP8594L [4] Layout Recommendations Line Impedance Stabilization Network (LISN) – 2 Line V-Networks LS1-15V, Most applications can use the fi ltering which is already installed inside the 50 Ω, 50 µH converter or with the addition of the recommended external capacitors. For greater emissions suppression, consider additional fi lter 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 GEAN02 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_UEE-Series.D02 Page 19 of 34 LISN UNIT UNDER TEST UEE Series Isolated, High-Density, Eighth-Brick DOSA Low Profile DC-DC Converters FUNCTIONAL SPECIFICATIONS, UEE-5/10-D48 ABSOLUTE MAXIMUM RATINGS Conditions ➀ Minimum Typical/Nominal Maximum Units Input Voltage, Continuous 0 75 Vdc Operating or non-operating, Input Voltage, Transient 0 100 Vdc 100 mS max. duration Isolation Voltage Input to output 2250 Vdc Input Reverse Polarity None, install external fuse None Vdc On/Off Remote Control Power on or off, referred to -Vin -0.1 15 Vdc Output Power 0 50 50.5 W Current-limited, no damage, Output Current 0 10 10 A short-circuit 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 or recommended. INPUT Conditions ➀ ➂ Operating voltage range 36 48 75 Vdc Recommended External Fuse Fast blow 10 A Start-up threshold Rising input voltage 33 34 35 Vdc Undervoltage shutdown Falling input voltage 30.5 31.5 33 Vdc Overvoltage shutdown None Vdc Reverse Polarity Protection None, install external fuse None Vdc Internal Filter Type Pi Input current Full Load Conditions Vin = nominal 1.13 1.17 A Low Line Vin = minimum 1.50 1.56 A 2 Inrush Transient 0.05 A -Sec. Output in Short Circuit 50 100 mA No Load Iout = minimum, unit = ON 50 80 mA Standby Mode (Off, UV, OT) 4 8 mA Reflected (back) ripple current ➁ Measured at input with specified filter 20 40 mA, P-P GENERAL and SAFETY Efficiency Vin = 48V, full load 90 92.5 % Vin = min, full load 90 92.5 % Isolation Isolation Voltage, input to output No baseplate 2250 Vdc Isolation Voltage, input to baseplate With baseplate NA Vdc Isolation Voltage, output to baseplate With baseplate NA Vdc Insulation Safety Rating basic Isolation Resistance 100 MΩ Isolation Capacitance 1000 pF Certified to UL-60950-1, CSA-C22.2 No.60950-1, Safety Yes IEC 60950-1, 2nd edition Per Telcordia SR-332, issue 1, class 3, ground 6 Calculated MTBF 2.7 Hours x 10 fixed, Tcase = +25°C DYNAMIC CHARACTERISTICS Fixed Switching Frequency 300 330 360 KHz Startup Time Power on to Vout regulated 10 mS Startup Time Remote ON to Vout regulated 10 mS 50-75-50% load step, settling time to within Dynamic Load Response 200 300 µSec ±1% of Vout Dynamic Load Peak Deviation same as above ±140 ±180 mV FEATURES and OPTIONS Remote On/Off Control ➃ “N” suffix: Negative Logic, ON state ON=Ground pin or external voltage -0.1 0.8 Vdc Negative Logic, OFF state OFF=Pin open or external voltage 3.5 15 Vdc Control Current sinking 1 2 mA “P” suffix: Positive Logic, ON state ON=Pin open or external voltage 3.5 15 V Positive Logic, OFF state OFF=Ground pin or external voltage 0 0.8 V Control Current sinking 1 2 mA Base Plate "B" suffix optional Conformal Coating "H" suffix optional www.murata-ps.com/support SDC_UEE-Series.D02 Page 20 of 34 UEE Series Isolated, High-Density, Eighth-Brick DOSA Low Profile DC-DC Converters FUNCTIONAL SPECIFICATIONS, UEE-5/10-D48 (CONT.) OUTPUT Conditions ➀ Minimum Typical/Nominal Maximum Units Total Output Power 0 50 50.5 W Voltage Nominal Output Voltage No trim 4.95 5 5.05 Vdc Setting Accuracy At 50% load -1 1 % of Vset. Output Voltage Range User-adjustable -10 10 % of Vnom. Overvoltage Protection Via magnetic feedback 6 7 Vdc Current Output Current Range 0 10 10 A Minimum Load No minimum load Current Limit Inception 98% of Vnom., after warmup 12 16 A Short Circuit Hiccup technique, autorecovery within ±1.25% Short Circuit Current 0.5 A of Vout Short Circuit Duration Output shorted to ground, no damage CONTINUOUS (remove short for recovery) Short circuit protection method Current limiting YES Regulation Line Regulation Vin=min. to max., Vout=nom., Iout=nom. ±0.125 % of Vout Load Regulation Iout=min. to max., Vin=48V ±0.25 % of Vout Ripple and Noise ➁ 5 Hz- 20 MHz BW 30 60 mV pk-pk Temperature Coefficient At all outputs 0.02 % of Vout./°C Maximum Capacitive Loading Cap. ESR=<0.02Ω, full resistive load 5000 μF Remote Sense Compliance Sense connected at load 10 % of Vout MECHANICAL (Through Hole Models) Outline Dimensions (no baseplate) C56 case 2.3x0.9x0.40 Inches (Please refer to outline drawing) LxWxH 58.4x22.9x10.16 mm Outline Dimensions (with baseplate) 2.3x0.9x0.50 Inches 58.4x22.9x12.7 mm Weight No baseplate 0.7 Ounces No baseplate 20 Grams With baseplate N/A Ounces With baseplate N/A Grams Through Hole Pin Diameter 0.04 & 0.062 Inches 1.016&1.524 mm Through Hole Pin Material Copper alloy TH Pin Plating Metal and Thickness Nickel subplate 100-299 µ-inches Gold overplate 10-31 µ-inches Baseplate Material Aluminum ENVIRONMENTAL Operating Ambient Temperature Range No Derating, 100 LFM, full power, vertical mount -40 85 °C Operating Case Temperature No derating -40 110 °C Storage Temperature Vin = Zero (no power) -55 125 °C Thermal Protection/Shutdown Measured in center 110 °C Electromagnetic Interference External filter is required Conducted, EN55022/CISPR22 B Class Relative humidity, non-condensing To +85°C 10 90 %RH Altitude must derate -1%/1000 feet -500 10,000 feet -152 3048 meters RoHS rating RoHS-6 Notes ➄ NOTICE—Please use only this customer data sheet as product documentation when laying out your ➀ Unless otherwise noted, all specifications are at nominal input voltage, nominal output voltage and printed circuit boards and applying this product into your application. Do NOT use other materials as full load. official documentation such as advertisements, product announcements, or website graphics. General conditions are +25˚ Celsius ambient temperature, near sea level altitude, natural convec- We strive to have all technical data in this customer data sheet highly accurate and complete. This cus- tion airflow. tomer data sheet is revision-controlled and dated. The latest customer data sheet revision is normally All models are tested and specified with external parallel 1 µF and 10 µF multi-layer ceramic on our website (www.murata-ps.com) for products which are fully released to Manufacturing. Please be output capacitors. especially careful using any data sheets labeled “Preliminary” since data may change without notice. No external input capacitor is used. All capacitors are low-ESR types wired close to the converter. The pinout (Pxx) and case (Cxx) designations (typically P32 or C56) refer to a generic family of These capacitors are necessary for our test equipment and may not be needed in the user’s ap- closely related information. It may not be a single pinout or unique case outline. Please be aware plication. of small details which may affect your application and PC board layouts. Study the Mechanical ➁ Input (back) ripple current is tested and specified over 5 Hz to 20 MHz bandwidth. Input filtering is Outline drawings, Input/Output Connection table and all footnotes very carefully. Please contact Cbus=220 µF, Cin=33 µF and Lbus=12 µH. Murata Power Solutions if you have any questions. ➂ All models are stable and regulate to specification under no load. ➃ The Remote On/Off Control is referred to -Vin. For external transistor control, use open collector logic or equivalent. www.murata-ps.com/support SDC_UEE-Series.D02 Page 21 of 34 UEE Series Isolated, High-Density, Eighth-Brick DOSA Low Profile DC-DC Converters TYPICAL PERFORMANCE DATA AND OSCILLOGRAMS, UEE-5/10-D48 UEE-5/10-D48 Efficiency and Power Dissipation @ Ta= +25° C UEE-5/10-D48 Maximum Current Temperature Derating at Sea Level (Vin=48V, no baseplate, airflow is from Vin to Vout) 95 5 12 90 4.5 85 10 4 Vin = 75V 80 Vin = 48V 3.5 8 100 to 400 LFM 75 Vin = 36V 3 6 70 2.5 65 4 2 60 Power Dissipation (Vin = 48V) 2 1.5 55 50 1 0 1 2 3 4 5 6 7 8 9 10 30 35 40 45 50 55 60 65 70 75 80 85 Ambient Temperature (ºC) Load Current (A) Step Load Transient Response (Vin=48V, Vout=nom., Cload=220uF, Iout=75% to 50% of UEE-5/10-D48 Maximum Current Temperature Derating at Sea Level full load, Ta=25° C) Trace 1=Vout, 100mV/div., 500µS/div. (Vin=48V, no baseplate, airflow is from +Vin to -Vin) 12 10 8 100 to 400 LFM 6 4 2 0 30 35 40 45 50 55 60 65 70 75 80 85 Ambient Temperature (ºC) Step Load Transient Response (Vin=48V, Vout=nom., Cload=220uF, Iout=50% to 75% of Step Load Transient Response (Vin=48V, Vout=nom., Cload=220uF, Iout=75 to 50 to 75% full load, Ta=25° C) Trace 1=Vout, 50mV/div., 500µS/div. of full load, Ta=25° C) Trace 1=Vout, 100mV/div., 1mS/div. www.murata-ps.com/support SDC_UEE-Series.D02 Page 22 of 34 Output Current (A) Efficiency (%) Power Dissipation (W) Output Current (A) UEE Series Isolated, High-Density, Eighth-Brick DOSA Low Profile DC-DC Converters TYPICAL PERFORMANCE DATA AND OSCILLOGRAMS, UEE-5/10-D48 On/Off Enable Delay (Vin=48V, Vout=nom., Iout=10A, Cload=0, Ta=+25° C., On/Off Enable Delay (Vin=48V, Vout=nom., Iout=0, Cload=0, Ta=+25° C., ScopeBW=20Mhz, Trace 2=Vout, Trace 4=Enable. ScopeBW=20Mhz, Trace 2=Vout, Trace 4=Enable. On/Off Enable Delay (Vin=48V, Vout=nom., Iout=10A, Cload=5000uF, Ta=+25° C., Output Ripple and noise (Vin=48V, Vout=nom., Iout=0A, Cload=220uF, Ta=+25° C., ScopeBW=20Mhz, Trace 2=Vout, Trace 4=Enable. ScopeBW=20Mhz) Output Ripple and noise (Vin=48V, Vout=nom., Iout=10A, Cload=220uF, Ta=+25° C., Thermal image with hot spot at full load current with 85 °C ambient; air is flowing at 0 ScopeBW=20Mhz) LFM. Air is flowing across the converter from -Vin to +Vin at 48V input. Identifiable and recommended maximum value to be verified in application. T1, Max temp= 120 °C/IPC9592 derating guidelines. www.murata-ps.com/support SDC_UEE-Series.D02 Page 23 of 34 UEE Series Isolated, High-Density, Eighth-Brick DOSA Low Profile DC-DC Converters Emissions Performance, Model UEE-5/10-D48 [3] Conducted Emissions Test Results Murata Power Solutions measures its products for radio frequency emissions [4] Layout Recommendations against the EN 55022 and CISPR 22 standards. Passive resistance loads are Most applications can use the filtering which is already installed inside the employed and the output is set to the maximum voltage. If you set up your converter or with the addition of the recommended external capacitors. For own emissions testing, make sure the output load is rated at continuous power greater emissions suppression, consider additional filter components and/or while doing the tests. shielding. Emissions performance will depend on the user’s PC board layout, The recommended external input and output capacitors (if required) are the chassis shielding environment and choice of external components. Please included. Please refer to the fundamental switching frequency. All of this refer to Application Note GEAN02 for further discussion. information is listed in the Product Specifications. An external discrete filter is Since many factors affect both the amplitude and spectra of emissions, we installed and the circuit diagram is shown below. recommend using an engineer who is experienced at emissions suppression. Return L1 External + + DC Power C1 C2 C3 C6 Source LOAD -Vsource C4 C5 NEG. POS. DC/DC Converter LINE LINE Ground Spectrum Analyzer Figure 5 . Conducted Emissions Test Circuit [1] Conducted Emissions Parts List Designation Value Part Number Description Vendor Graph 7. Conducted emissions performance, Positive Line, SMD Ceramic, 100V, 1000nF, CISPR 22, Class A, full load C1 1 µF GRM32ER72A105KA01L Murata X7R-1210 SMD Ceramic, 100V, 100nF C2 100 nF GRM319R72A104KA01D Murata ±10%, X7R-1206 Common Mode choke, L1 1320 µH LB16H1324 1320 µH, ±25%, 4A, R5K, High Light *21*21*12.5mm SMD Ceramic, 1000V, 0.022 C4, C5 0.022 µF GRM32DR73A223KW01L Murata µF, ±10%, X7R-1210 Alum. electrolytic, 100V, 320 C3 320 µF UHE2A221MHD Nichicon µF, ±10%, long lead C6 Not used Not used for this model [2] Conducted Emissions Test Equipment Used Spectrum Analyzer – Hewlett Packard HP8594L Line Impedance Stabilization Network (LISN) – 2 Line V-Networks LS1-15V, 50 Ω, 50 µH Graph 8. Conducted emissions performance, Negative Line, CISPR 22, Class A, full load www.murata-ps.com/support SDC_UEE-Series.D02 Page 24 of 34 LISN UNIT UNDER TEST UEE Series Isolated, High-Density, Eighth-Brick DOSA Low Profile DC-DC Converters MECHANICAL SPECIFICATIONS (THROUGH-HOLE MOUNT) TOP VIEW TOP VIEW Package C56 2.30 (58.4) 2.30 (58.4) M3-6H TYP 2PL 2.000 (50.8) WITH BASEPLATE OPTION OPEN FRAME (NO BASEPLATE) (Baseplate not available for UEE-3.3/15-D48 , UEE-5/10-D48 models or SMT models.) PIN Shoulder 1-3, 5-7: PIN Shoulder 1-3, 5-7: φ0.091±0.003(2.31±0.076) φ0.091±0.003(2.31±0.076) PIN Shoulder 4,8: PIN Shoulder 4,8: φ0.110±0.003(2.79±0.076) φ0.110±0.003(2.79±0.076) SIDE VIEW PINS 1-3, 5-7: φ0.040±0.001(1.016±0.025) 0.015 minimum clearance PINS 4,8: between standos and φ0.062±0.001(1.575±0.025) highest component 0.18 (4.6) 2.000 (50.8) 2.000 (50.8) 3 4 3 4 5 5 2 6 2 6 7 7 1 1 8 8 BOTTOM PIN SIDE VIEW BOTTOM PIN SIDE VIEW Typical clearance to on-board components ➀ M3 bolts must not exceed 0.118˝ (3.0mm) depth below the baseplate surface. ➁ Applied screw torque must not exceed 5.3 in-lb. (0.6 N-m). is 0.015˝ (0.38mm). In general, the user should not place components directly Standard pin length is shown. Please refer to the part number structure for below the converter. alternate pin lengths. Dimensions are in inches (mm shown for ref. only). DOSA-Compatible Third Angle Projection INPUT/OUTPUT CONNECTIONS Pin Function P32 1 Positive Input 2 On/Off Control 3 Negative Input Tolerances (unless otherwise specified): 4 Negative Output .XX ± 0.02 (0.5) 5 Negative Sense .XXX ± 0.010 (0.25) 6 Output Trim Angles ± 2˚ 7 Positive Sense Components are shown for reference only 8 Positive Output and may vary between units. www.murata-ps.com/support SDC_UEE-Series.D02 Page 25 of 34 0.600 (15.24) 0.40 (10.16) Max L 0.136 (3.45) ±0.005 0.90 (22.9) 0.300 (7.62) 0.600 (15.24) 0.90 (22.9) 0.50 (12.7) Max 0.600 (15.24) 0.600 (15.24) 0.300 (7.62) 0.600 (15.24) UEE Series Isolated, High-Density, Eighth-Brick DOSA Low Profi le DC-DC Converters MECHANICAL SPECIFICATIONS (SURFACE MOUNT) SIDE VIEW, OPEN FRAME Package C56 0.02 minimum clearance highest component 2.000 (50.8) 0.037 (0.939) BOTTOM PIN VIEW 4 3 5 6 2 7 1 8 2.30 (58.4) μm MIN AND 7.6 μm MAX 0F NICKEL, FINISH:UNDERPLATE WITH 2.54 OVERPLATE WITH 0.10 μm MIN AND 0.30 μm Max OF GOLD. RECOMMENDED PAD LAYOUT (SMD) 0.15 (3.8) 2.00 (50.8) 2.30 (58.4) Do not place components directly below the converter. Dimensions are in inches (mm shown for ref. only). DOSA-Compatible Third Angle Projection INPUT/OUTPUT CONNECTIONS Pin Function P32 1 Positive Input 2 On/Off Control 3 Negative Input Tolerances (unless otherwise specified): 4 Negative Output .XX ± 0.02 (0.5) 5 Negative Sense .XXX ± 0.010 (0.25) 6 Output Trim Angles ± 2˚ 7 Positive Sense Components are shown for reference only 8 Positive Output and may vary between units. www.murata-ps.com/support SDC_UEE-Series.D02 Page 26 of 34 0.90 (22.9) 0.90 (22.9) 0.40 0.600 (15.24) 0.600 (15.24) (10.16) Max 0.300 0.300 0.600 0.15 (3.8) 0.600 (15.24) 0.150 0.085 (3.81) (2.159) 0.150 (3.81) UEE Series Isolated, High-Density, Eighth-Brick DOSA Low Profile DC-DC Converters SHIPPING TRAYS AND BOXES (THROUGH-HOLE MOUNT) Anti-static foam Label Label For 1–42 pc quantity For 43–84 pc quantity SHIPPING TRAY (THROUGH-HOLE MOUNT) UEE through-hole 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) www.murata-ps.com/support SDC_UEE-Series.D02 Page 27 of 34 FEED (UNWIND) DIRECTION ----- UEE Series Isolated, High-Density, Eighth-Brick DOSA Low Profile DC-DC Converters TAPE AND REEL INFORMATION (SURFACE MOUNT, MSL Rating 2a) PIN #1 INDICATOR AT EACH POCKET ON POCKET TAPE PIN #1 OF FEED (UNWIND) DC-DC DIRECTION ------- 'ROUND' CONVERTER SPROCKET HOLES 2.300 2.83 58.42 72.0 REF PCB 'OBLONG' SPROCKET HOLES 0.900 22.86 13.0" x 72mm WIDE REF PCB REEL (REF) 32.00 PITCH Reel Information (100 units per reel) FEED (UNWIND) DIRECTION ------- 1.50mm 'ROUND' 0.410 PIN #1 OF PIN #1 INDICATOR SPROCKET DC-DC AT EACH POCKET HOLES 10.42 CONVERTER ON POCKET TAPE 0.157 POCKET 4.00 0.199 0.069 DEPTH A 5.06 1.75 REF 2.693 68.40 2.379 2.83 2.300 SPROCKET 2.436 60.43 72.0 58.42 CENTERS 61.88 PCB REF (REF) 1.260 0.900 A 2.00 'OBLONG' 32.00 22.86 SECTION A-A SPROCKET PITCH PCB REF SCALE 2 : 1 HOLES COVER TAPE 0.30 7.62 1# 0.77 19.56 0.442 0.978 1.043 11.22 24.85 26.50 0.31 8.00 PICKUP POINT www.murata-ps.com/support SDC_UEE-Series.D02 Page 28 of 34 UEE Series Isolated, High-Density, Eighth-Brick DOSA Low Profile DC-DC Converters TECHNICAL NOTES THROUGH-HOLE SOLDERING GUIDELINES SMT REFLOW SOLDERING GUIDELINES Murata Power Solutions recommends the specifications below when install- The surface-mount reflow solder profile shown below is suitable for SAC305 ing these converters. These specifications vary depending on the solder type lead-free solders. This graph should be used only as a guideline. Many type. Exceeding these specifications may cause damage to the product. Your other factors influence the success of SMT reflow soldering. Since your pro- production environment may differ; therefore please thoroughly review these duction environment may differ, please thoroughly review these guidelines with guidelines with your process engineers. your process engineers. Wave Solder Operations for through-hole mounted products (THMT) For Sn/Ag/Cu based solders: Maximum Preheat Temperature 115ºC. Maximum Pot Temperature 270ºC. Maximum Solder Dwell Time 7 seconds For Sn/Pb based solders: Maximum Preheat Temperature 105ºC. Maximum Pot Temperature 250ºC. Maximum Solder Dwell Time 6 seconds Input Fusing Certain applications and/or safety agencies may require fuses at the inputs of restart will not occur until the input voltage rises again above the Start-Up power conversion components. Fuses should also be used when there is the Threshold. This built-in hysteresis prevents any unstable on/off operation at a possibility of sustained input voltage reversal which is not current-limited. For single input voltage. greatest safety, we recommend a fast blow fuse installed in the ungrounded Users should be aware however of input sources near the Under-Voltage input supply line with a value which is approximately twice the maximum line Shutdown whose voltage decays as input current is consumed (such as capaci- current, calculated at the lowest input voltage. tor inputs), the converter shuts off and then restarts as the external capacitor The installer must observe all relevant safety standards and regulations. For recharges. Such situations could oscillate. To prevent this, make sure the safety agency approvals, install the converter in compliance with the end-user operating input voltage is well above the UV Shutdown voltage AT ALL TIMES. safety standard. Start-Up Delay Input Reverse-Polarity Protection Assuming that the output current is set at the rated maximum, the Vin to Vout If the input voltage polarity is reversed, an internal body diode will become Start-Up Time (see Specifications) is the time interval between the point when forward biased and likely draw excessive current from the power source. If this the rising input voltage crosses the Start-Up Threshold and the fully loaded source is not current-limited or the circuit appropriately fused, it could cause regulated output voltage enters and remains within its specified regulation permanent damage to the converter. Please be sure to install a properly band. Actual measured times will vary with input source impedance, external rated external input fuse. input capacitance, input voltage slew rate and final value of the input voltage as it appears at the converter. Input Under-Voltage Shutdown and Start-Up Threshold These converters include a soft start circuit to moderate the duty cycle of the Under normal start-up conditions, converters will not begin to regulate properly PWM controller at power up, thereby limiting the input inrush current. until the rising input voltage exceeds and remains at the Start-Up Threshold Voltage (see Specifications). Once operating, converters will not turn off until The On/Off Remote Control interval from inception to Vout regulated the input voltage drops below the Under-Voltage Shutdown Limit. Subsequent assumes that the converter already has its input voltage stabilized above the www.murata-ps.com/support SDC_UEE-Series.D02 Page 29 of 34 UEE Series Isolated, High-Density, Eighth-Brick DOSA Low Profile DC-DC Converters Start-Up Threshold before the On command. The interval is measured from the On command until the output enters and remains within its specified +SENSE regulation band. The specification assumes that the output is fully loaded at maximum rated current. +VOUT Input Source Impedance RLOAD SCOPE C1 C2 These converters will operate to specifications without external components, assuming that the source voltage has very low impedance and reasonable input voltage regulation. Since real-world voltage sources have finite imped- −VOUT ance, performance is improved by adding external filter components. Some- −SENSE times only a small ceramic capacitor is sufficient. Since it is difficult to totally characterize all applications, some experimentation may be needed. Note that C1 = 1µF external input capacitors must accept high speed switching currents. C2 = 10µF LOAD 2-3 INCHES (51-76mm) FROM MODULE Because of the switching nature of DC-DC converters, the input of these converters must be driven from a source with both low AC impedance and Figure 8. Measuring Output Ripple and Noise (PARD) adequate DC input regulation. Performance will degrade with increasing input inductance. Excessive input inductance may inhibit operation. The DC input Floating Outputs regulation specifies that the input voltage, once operating, must never degrade Since these are isolated DC-DC converters, their outputs are “floating” with below the Shut-Down Threshold under all load conditions. Be sure to use respect to their input. The essential feature of such isolation is ideal ZERO adequate trace sizes and mount components close to the converter. CURRENT FLOW between input and output. Real-world converters however do exhibit tiny leakage currents between input and output (see Specifications). I/O Filtering, Input Ripple Current and Output Noise These leakages consist of both an AC stray capacitance coupling component All models in this converter series are tested and specified for input reflected and a DC leakage resistance. When using the isolation feature, do not allow ripple current and output noise using designated external input/output compo- the isolation voltage to exceed specifications. Otherwise the converter may nents, circuits and layout as shown in the figures below. External input capaci- be damaged. Designers will normally use the negative output (-Output) as tors (Cin in the figure) serve primarily as energy storage elements, minimizing the ground return of the load circuit. You can however use the positive output line voltage variations caused by transient IR drops in the input conductors. (+Output) as the ground return to effectively reverse the output polarity. Users should select input capacitors for bulk capacitance (at appropriate frequencies), low ESR and high RMS ripple current ratings. In the figure below, Minimum Output Loading Requirements the Cbus and Lbus components simulate a typical DC voltage bus. Your specific All models regulate within specification and are stable under no load to full system configuration may require additional considerations. Please note that the load conditions. Operation under no load might however slightly increase values of Cin, Lbus and Cbus will vary according to the specific converter model. output ripple and noise. In critical applications, output ripple and noise (also referred to as periodic Thermal Shutdown and random deviations or PARD) may be reduced by adding filter elements To protect against thermal overstress, these converters include thermal such as multiple external capacitors. Be sure to calculate component tempera- shutdown circuitry. If environmental conditions cause the temperature of the ture rise from reflected AC current dissipated inside capacitor ESR. DC-DC’s to rise above the Operating Temperature Range up to the shutdown temperature, an on-board electronic temperature sensor will power down the unit. When the temperature decreases below the turn-on threshold, the TO converter will automatically restart. There is a small amount of hysteresis to CURRENT OSCILLOSCOPE prevent rapid on/off cycling. The temperature sensor is typically located adja- PROBE cent to the switching controller, approximately in the center of the unit. See the +VIN LBUS Performance and Functional Specifications. + – VIN CAUTION: If you operate too close to the thermal limits, the converter may CBUS CIN + shut down suddenly without warning. Be sure to thoroughly test your applica- – tion to avoid unplanned thermal shutdown. −VIN Temperature Derating Curves CIN = 33µF, ESR < 700mΩ @ 100kHz CBUS = 220µF, ESR < 100mΩ @ 100kHz The graphs in this data sheet illustrate typical operation under a variety of LBUS = 12µH conditions. The Derating curves show the maximum continuous ambient air Figure 7. Measuring Input Ripple Current temperature and decreasing maximum output current which is acceptable under increasing forced airflow measured in Linear Feet per Minute (“LFM”). Note that these are AVERAGE measurements. The converter will accept brief increases in current or reduced airflow as long as the average is not exceeded. www.murata-ps.com/support SDC_UEE-Series.D02 Page 30 of 34 UEE Series Isolated, High-Density, Eighth-Brick DOSA Low Profile DC-DC Converters Note that the temperatures are of the ambient airflow, not the converter rapid on/off cycling is called “hiccup mode.” The hiccup cycling reduces the itself which is obviously running at higher temperature than the outside air. average output current, thereby preventing excessive internal temperatures Also note that very low flow rates (below about 25 LFM) are similar to “natural and/or component damage. convection,” that is, not using fan-forced airflow. The “hiccup” system differs from older latching short circuit systems Murata Power Solutions makes Characterization measurements in a closed because you do not have to power down the converter to make it restart. The cycle wind tunnel with calibrated airflow. We use both thermocouples and an system will automatically restore operation as soon as the short circuit condi- infrared camera system to observe thermal performance. As a practical matter, tion is removed. it is quite difficult to insert an anemometer to precisely measure airflow in Remote Sense Input (Models UEE-3.3/30-D48 only) most applications. Sometimes it is possible to estimate the effective airflow if Use the Sense inputs with caution. Sense is normally connected at the load. you thoroughly understand the enclosure geometry, entry/exit orifice areas and Sense inputs compensate for output voltage inaccuracy delivered at the load. the fan flowrate specifications. This is done by correcting IR voltage drops along the output wiring and the CAUTION: If you exceed these Derating guidelines, the converter may have current carrying capacity of PC board etch. This output drop (the difference an unplanned Over Temperature shut down. Also, these graphs are all collected between Sense and Vout when measured at the converter) should not exceed near Sea Level altitude. Be sure to reduce the derating for higher altitude. 0.5V. Consider using heavier wire if this drop is excessive. Sense inputs also improve the stability of the converter and load system by optimizing the control Output Overvoltage Protection (OVP) loop phase margin. This converter monitors its output voltage for an over-voltage condition. If the output exceeds OVP limits, the sensing circuit will power down the unit, Note: The Sense input and power Vout lines are internally connected through and the output voltage will decrease. After a time-out period, the PWM will low value resistors to their respective polarities so that the converter can automatically attempt to restart, causing the output voltage to ramp up to its operate without external connection to the Sense. Nevertheless, if the Sense rated value. It is not necessary to power down and reset the converter for the function is not used for remote regulation, the user should connect +Sense to automatic OVP-recovery restart. +Vout and –Sense to –Vout at the converter pins. If the fault condition persists and the output voltage climbs to excessive The remote Sense lines carry very little current. They are also capacitively levels, the OVP circuitry will initiate another shutdown cycle. This on/off cycling coupled to the output lines and therefore are in the feedback control loop to is referred to as “hiccup” mode. regulate and stabilize the output. As such, they are not low impedance inputs and must be treated with care in PC board layouts. Sense lines on the PCB Output Fusing should run adjacent to DC signals, preferably Ground. In cables and discrete The converter is extensively protected against current, voltage and temperature wiring, use twisted pair, shielded tubing or similar techniques. extremes. However your application circuit may need additional protection. In Any long, distributed wiring and/or significant inductance introduced into the the extremely unlikely event of output circuit failure, excessive voltage could be Sense control loop can adversely affect overall system stability. If in doubt, test applied to your circuit. Consider using appropriate external protection. your applications by observing the converter’s output transient response during Output Current Limiting step loads. There should not be any appreciable ringing or oscillation. You As soon as the output current increases to approximately 125% to 150% of may also adjust the output trim slightly to compensate for voltage loss in any its maximum rated value, the DC-DC converter will enter a current-limiting external filter elements. Do not exceed maximum power ratings. mode. The output voltage will decrease proportionally with increases in output current, thereby maintaining a somewhat constant power output. This is also commonly referred to as power limiting. Contact and PCB resistance losses due to IR drops Current limiting inception is defined as the point at which full power falls +VOUT below the rated tolerance. See the Performance/Functional Specifications. +VIN Note particularly that the output current may briefly rise above its rated value I OUT in normal operation as long as the average output power is not exceeded. This +SENSE enhances reliability and continued operation of your application. If the output Sense Current current is too high, the converter will enter the short circuit condition. ON/OFF TRIM LOAD CONTROL Output Short Circuit Condition Sense Return When a converter is in current-limit mode, the output voltage will drop as the −SENSE output current demand increases. If the output voltage drops too low (approxi- I OUT Return mately 98% of nominal output voltage for most models), the magnetically –VIN -VOUT coupled voltage used to develop the PWM bias voltage will also drop, thereby shutting down the PWM controller. Following a time-out period, the PWM will Contact and PCB resistance losses due to IR drops restart, causing the output voltage to begin rising to its appropriate value. If the short-circuit condition persists, another shutdown cycle will initiate. This Figure 9. Remote Sense Circuit Configuration www.murata-ps.com/support SDC_UEE-Series.D02 Page 31 of 34 UEE Series Isolated, High-Density, Eighth-Brick DOSA Low Profile DC-DC Converters Please observe Sense inputs tolerance to avoid improper operation: or –Sense terminals. Trimming resistors should have a low temperature coef- ficient (±100 ppm/deg.C or less) and be mounted close to the converter. Keep [Vout(+) −Vout(-)] − [Sense(+) −Sense(-)] ≤ 10% of Vout leads short. If the trim function is not used, leave the trim unconnected. With no Output overvoltage protection is monitored at the output voltage pin, not the trim, the converter will exhibit its specified output voltage accuracy. Sense pin. Therefore excessive voltage differences between Vout and Sense There are two CAUTIONs to observe for the Trim input: together with trim adjustment of the output can cause the overvoltage protec- tion circuit to activate and shut down the output. CAUTION: To avoid unplanned power down cycles, do not exceed EITHER the maximum output voltage OR the maximum output power when setting the Power derating of the converter is based on the combination of maximum trim. Be particularly careful with a trimpot. If the output voltage is excessive, output current and the highest output voltage. Therefore the designer must the OVP circuit may inadvertantly shut down the converter. If the maximum insure: power is exceeded, the converter may enter current limiting. If the power is (Vout at pins) x (Iout) ≤ (Max. rated output power) exceeded for an extended period, the converter may overheat and encounter overtemperature shut down. Trimming the Output Voltage CAUTION: Be careful of external electrical noise. The Trim input is a senstive The Trim input to the converter allows the user to adjust the output voltage input to the converter’s feedback control loop. Excessive electrical noise may over the rated trim range (please refer to the Specifications). In the trim equa- cause instability or oscillation. Keep external connections short to the Trim tions and circuit diagrams that follow, trim adjustments use either a trimpot or input. Use shielding if needed. a single fixed resistor connected between the Trim input and either the +Sense Trim Equations Trim Down Trim Up Connect trim resistor between Connect trim resistor between trim pin and −Sense trim pin and +Sense 5.11 × VNOM × (1+∆) 5.11 − 5.11 R (k Ω) = R (k Ω) = − 10.22 − 10.22 TrimDn TrimUp ∆ 1.225 × ∆ ∆ Where, ∆ = | (VNOM − VOUT) / VNOM | VNOM is the nominal, untrimmed output voltage. VOUT is the desired new output voltage. Do not exceed the specified trim range or maximum power ratings when adjusting trim. Use 1% precision resistors mounted close to the converter on short leads. If sense is not installed, connect the trim resistor to the respective VOUT pin. Trim Circuits +VOUT +VOUT +VIN +VIN +SENSE +SENSE ON/OFF ON/OFF TRIM TRIM LOAD LOAD CONTROL CONTROL RTRIM UP –SENSE –SENSE –VIN –VIN –VOUT –VOUT Figure 10. Trim Connections Using A Trimpot Figure 11. Trim Connections To Increase Output Voltages Connect sense to its respective Vout pin if sense is not used with a remote load. www.murata-ps.com/support SDC_UEE-Series.D02 Page 32 of 34 UEE Series Isolated, High-Density, Eighth-Brick DOSA Low Profile DC-DC Converters +VOUT +VIN +VCC +SENSE RTRIM DOWN ON/OFF ON/OFF TRIM LOAD CONTROL CONTROL –SENSE -VIN –VIN –VOUT Figure 13. Driving the On/Off Control Pin (suggested circuit) Figure 12. Trim Connections To Decrease Output Voltages Output Capacitive Load Remote On/Off Control These converters do not require external capacitance added to achieve rated On the input side, a remote On/Off Control can be specified with either positive or negative logic logic. specifications. Users should only consider adding capacitance to reduce switch- ing noise and/or to handle spike current step loads. Install only enough capaci- Positive: Models equipped with positive logic are enabled when the On/Off tance to achieve noise objectives. Excess external capacitance may cause pin is left open or is pulled high to +Vin with respect to –Vin. An internal bias regulation problems, slower transient response and possible instability. Proper current causes the open pin to rise to approximately +13.5V. Some models will wiring of the Sense inputs will improve these factors under capacitive load. also turn on at lower intermediate voltages (see Specifications). Positive-logic The maximum rated output capacitance and ESR specification is given for a devices are disabled when the On/Off is grounded or brought to within a low voltage (see Specifications) with respect to –Vin. capacitor installed immediately adjacent to the converter. Any extended output wiring or smaller wire gauge or less ground plane may tolerate somewhat higher Negative: Models with negative logic are on (enabled) when the On/Off is capacitance. Also, capacitors with higher ESR may use a larger capacitance. grounded or brought to within a low voltage (see Specifications) with respect to –Vin. The device is off (disabled) when the On/Off is left open or is pulled high to approximately +13.5V with respect to –Vin. Dynamic control of the On/Off function should be able to sink the speci- fied signal current when brought low and withstand appropriate voltage when brought high. Be aware too that there is a finite time in milliseconds (see Specifications) between the time of On/Off Control activation and stable, regulated output. This time will vary slightly with output load type and current and input conditions. www.murata-ps.com/support SDC_UEE-Series.D02 Page 33 of 34 UEE Series Isolated, High-Density, Eighth-Brick DOSA Low Profi le DC-DC Converters 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 airfl ow and heat dissipation analysis of power products. The system includes IR Transparent a precision low fl ow-rate anemometer, variable speed fan, power optical window Variable supply input and load controls, temperature gauges, and adjust- Unit under speed fan able heating element. test (UUT) IR Video The IR camera monitors the thermal performance of the Unit Camera Under Test (UUT) under static steady-state conditions. A special optical port is used which is transparent to infrared wavelengths. Both through-hole and surface mount converters are soldered down to a 10" x 10" host carrier board for realistic heat absorp- tion and spreading. Both longitudinal and transverse airfl ow Heating studies are possible by rotation of this carrier board since there element are often signifi cant differences in the heat dissipation in the two Precision airfl ow directions. The combination of adjustable airfl ow, adjust- low-rate able ambient heat, and adjustable Input/Output currents and anemometer 3” below UUT voltages mean that a very wide range of measurement conditions can be studied. The collimator reduces the amount of turbulence adjacent Ambient to the UUT by minimizing airfl ow turbulence. Such turbulence temperature infl uences the effective heat transfer characteristics and gives sensor false readings. Excess turbulence removes more heat from some surfaces and less heat from others, possibly causing uneven Airflow overheating. collimator Both sides of the UUT are studied since there are different thermal gradients on each side. The adjustable heating element and fan, built-in temperature gauges, and no-contact IR camera mean that power supplies are tested in real-world conditions. Figure 14. 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, Mansfi eld, 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. Specifi cations are subject to change without notice. © 2017 Murata Power Solutions, Inc. www.murata-ps.com/support SDC_UEE-Series.D02 Page 34 of 34