MURATA POWER SOLUTIONS OKL-T/3-W5P-C

OKL-T/3-W5 Series www.murata-ps.com Programmable Output 3-Amp iLGA SMT PoLs Typical unit FEATURES PRODUCT OVERVIEW ■ iLGA inspectable Land Grid Array The OKL-T/3-W5 series are miniature non- effi cient Point of Load (PoL) module features isolated Point-of-Load (PoL) DC/DC power convert- programmable output voltage and On/Off control. ■ 2.4-5.5Vdc input voltage range ers for embedded applications. The tiny form factor These converters also include under voltage lock ■ Programmable output voltage from 0.6-3.63Vdc is confi gured on a Land Grid Array (LGA) assembly out (UVLO), output short circuit protection, over- ■ Drives 200 µF ceramic capacitive loads measuring only 0.48 x 0.48 x 0.244 inches max. current and over temperature protections. ■ High power conversion effi ciency at 95.3% (12.2 x 12.2 x 6.2 mm max.). An optional sequence/tracking feature allows The wide input range is 2.4 to 5.5 Volts DC. power sequencing of PoL’s. These units are certi- ■ Outstanding thermal derating performance The maximum output current is 3 Amps. Based fi ed to all standard UL/EN/IEC 60950-1 safety ■ Over temperature and over current protection on fi xed-frequency synchronous buck converter certifi cations (2nd Edition) and RoHS-6 hazardous ■ On/Off control switching topology, the high power conversion substance compliance. ■ Certifi ed to UL/EN/IEC 60950-1 safety, 2nd Edition ■ RoHS-6 hazardous substance compliance ■ Sequence/Tracking operation (optional) Connection Diagram +Vin +Vout • Switching F1 On/Off Sense Control • Filters Controller • Current Sense External Trim DC Power Reference and Open = On Source Error Amplifier Closed = Off (Positive On/Off) Common Common Sequence/Tracking (OKL2 models) Figure 1. OKL-T/3-W5 Note: Murata Power Solutions strongly recommends an external input fuse, F1. See specifi cations. For full details go to www.murata-ps.com/rohs www.murata-ps.com/support MDC_OKL-T/3-W5 Series.C03 Page 1 of 17 OKL-T/3-W5 Series Programmable Output 3-Amp iLGA SMT PoLs PERFORMANCE SPECIFICATIONS SUMMARY AND ORDERING GUIDE Output Input Package - Pinout P83 Efficiency Model Number Regulation (max.) Vout Iout (Amps, Power R/N (mV p-p) Vin nom. Range Iin, no load Iin, full load Case C83 (Volts) ➀ max.) (Watts) Max. ➃ (Volts) (Volts) (mA) ➃ (Amps) ➁ inches (mm) Line Load Min. Typ. 0.48x0.48x0.244 max OKL-T/3-W5P-C 0.6-3.63 3 9.9 25 ±0.25% ±0.25% 5 2.4-5.5 25 2.08 93.3% 95.3% Pos. no (12.2x12.2x6.2) max 0.48x0.48x0.244 max OKL-T/3-W5N-C 0.6-3.63 3 9.9 25 ±0.25% ±0.25% 5 2.4-5.5 25 2.08 93.3% 95.3% Neg. no (12.2x12.2x6.2) max 0.48x0.48x0.244 max OKL2-T/3-W5P-C 0.6-3.63 3 9.9 25 ±0.25% ±0.25% 5 2.4-5.5 25 2.08 93.3% 95.3% Pos. yes (12.2x12.2x6.2) max 0.48x0.48x0.244 max OKL2-T/3-W5N-C 0.6-3.63 3 9.9 25 ±0.25% ±0.25% 5 2.4-5.5 25 2.08 93.3% 95.3% Neg. yes (12.2x12.2x6.2) max I/O caps are necessary for our test equipment and may not be needed for your application. ➀ The output range is limited by Vin. See detailed specs. ➂ Use adequate ground plane and copper thickness adjacent to the converter. ➁ All specifications are at nominal line voltage, Vout=nominal (3.3V) and full load, +25 deg.C. unless otherwise noted.  Ripple and Noise (R/N) and no-load input current are shown at Vout=1V. See specs for details. Output capacitors are 10 µF ceramic. Input cap is 22 µF. See detailed specifications. PART NUMBER STRUCTURE OK L 2 - T / 3 - W5 N - C Non-isolated PoL LGA Surface Mount Sequence/tracking RoHS Hazardous Blank = Not installed Substance Compliance 2 = Installed C = RoHS-6 (does not claim EU RoHS exemption 7b–lead in solder) Trimmable Output On/Off Logic Voltage Range P = Positive Logic 0.6-3.63Vdc N = Negative Logic Maximum Rated Output Input Voltage Range Current in Amps 2.4-5.5Vdc Product Label Because of the small size of these products, the product label contains a Model Number Product Code OKL-T/3-W5P-C L01003 character-reduced code to indicate the model number and manufacturing date OKL-T/3-W5N-C L00003 code. Not all items on the label are always used. Please note that the label OKL2-T/3-W5P-C L21003 differs from the product photograph. Here is the layout of the label: OKL2-T/3-W5N-C L20003 The manufacturing date code is four characters: XXXXXX Product code Mfg. date YMDX Rev. Revision level First character – Last digit of manufacturing year, example 2009 code Second character – Month code (1 through 9 = Jan-Sep; Figure 2. Label Artwork Layout O, N, D = Oct, Nov, Dec) Third character – Day code (1 through 9 = 1 to 9, 10 = 0 and The label contains three rows of information: 11 through 31 = A through Z) Fourth character – Manufacturing information First row – Murata Power Solutions logo Second row – Model number product code (see table) Third row – Manufacturing date code and revision level www.murata-ps.com/support MDC_OKL-T/3-W5 Series.C03 Page 2 of 17 On/Off Logic Sequence/ Tracking OKL-T/3-W5 Series Programmable Output 3-Amp iLGA SMT PoLs 6 mSec for Vout=nominal (Remote On/Off) Performance and Functional Specifications (Vin on or On/Off to Vout regulated) See Note 1 Switching Frequency 600 KHz Input Environmental Input Voltage Range See Ordering Guide and Note 7. Calculated MTBF (hours) OKL Models OKL2 Models Isolation Not isolated Telecordia method (4a) 5,229 10,820,000 ,000 Start-Up Voltage 2.05 V (hours) Calculated MTBF 4,820,000 MIL-HDBK-217N2 method (4b) 3,832,000 Undervoltage Shutdown (see Note 15) 1.92 V Overvoltage Shutdown None Operating Temperature Range (Ambient, all output ranges) See derating curves -40 to +85 ˚C. with derating (Note 9) Reflected (Back) Ripple Current (Note 2) TBD mA pk-pk Storage Temperature Range -55 to +125 deg. C. Internal Input Filter Type Capacitive Thermal Protection/Shutdown Included in PWM Recommended External Fuse TBD MSL Rating 2 Reverse Polarity Protection None. See fuse information. Relative Humidity To 85%/+85 ˚C., non-condensing Input Current: Full Load Conditions See Ordering Guide Physical 2 Inrush Transient A Sec. TBD Outline Dimensions See Mechanical Specifications Shutdown Mode (Off, UV, OT) 1 mA Weight 0.06 ounces (1.6 grams) Output in Short Circuit 10 mA Low Line (Vin=Vmin) 1.48 A. Plating Thickness Gold overplate 1.18µ” (0.03µm) on Nickel subplate 118.1µ” (3.0µm) Remote On/Off Control (Note 5) Negative Logic ON = Open pin or -0.2V to Vin -1.6V max. Safety Certified to UL/cUL 60950-1, CSA- OFF = Vin -0.8V min. to +Vin C22.2 No. 60950-1, IEC/EN 60950-1, 2nd Edition Positive Logic ON = Open pin (internally pulled up) or +1.2V to +Vin max. Restriction of Hazardous Substances RoHS-6 (does not claim EU RoHS exemption OFF = -0.3V to +0.3V max. or ground 7b–lead in solder) Current TBD Absolute Maximum Ratings Tracking/Sequencing (optional) See technical note on page 15 Input Voltage (Continuous or transient) 0 V. to +6 Volts max. Slew Rate 2 Volts per millisecond, max. On/Off Control 0 V. min. to +Vin max. Tracking accuracy, rising input Vout = ±100 mV of Sequence In Tracking accuracy, falling input Vout = ±100 mV of Sequence In Input Reverse Polarity Protection See Fuse section Output Current (Note 7) Current-limited. Devices can withstand a Output sustained short circuit without damage. Output Power 10.1W max. The outputs are not intended to accept Output Voltage Range See Ordering Guide appreciable reverse current. Minimum Loading No minimum load Storage Temperature -55 to +125 ˚C. Accuracy (50% load, untrimmed) ±2.5 % of Vnominal Lead Temperature See soldering specifications Voltage Output Range (Note 13) See Ordering Guide Absolute maximums are stress ratings. Exposure of devices to greater than any of any of these conditions may adversely affect long-term reliability. Proper operation Overvoltage Protection (Note 16) None under conditions other than those listed in the Performance/Functional Specifications Temperature Coefficient TBD Table is not implied nor recommended. Ripple/Noise (20 MHz bandwidth) See Ordering Guide and note 8 Line/Load Regulation See Ordering Guide and note 10 Specification Notes: (1) Specifications are typical at +25 °C, Vin=nominal (+5V), Vout=nominal (+3.3V), full load, external caps and Efficiency See Ordering Guide natural convection unless otherwise indicated. Extended tests at full power must supply substantial forced Maximum Capacitive Loading (Note 14) airflow. Cap-ESR=0.001 to 0.01 Ohms 200 μF All models are tested and specified with external 10μF ceramic output capacitors and a 22 μF external Cap-ESR >0.01 Ohms TBD input capacitor. All capacitors are low ESR types. These capacitors are necessary to accommodate our test equipment and may not be required to achieve specified performance in your applications. However, Murata Current Limit Inception (Note 6) Power Solutions recommends installation of these capacitors. All models are stable and regulate within (98% of Vout setting, after warm up) 8 Amps spec under no-load conditions. Short Circuit Mode (2) Input Back Ripple Current is tested and specified over a 5 Hz to 20 MHz bandwidth. Input filtering is Cin=2 x Short Circuit Current Output 10 mA 100 μF ceramic, Cbus=1000 μF electrolytic, Lbus=1 μH. Protection Method Hiccup autorecovery upon overload (3) Note that Maximum Power Derating curves indicate an average current at nominal input voltage. At higher removal. (Note 17) temperatures and/or lower airflow, the DC/DC converter will tolerate brief full current outputs if the total RMS current over time does not exceed the Derating curve. Short Circuit Duration Continuous, no damage (4a) Mean Time Before Failure is calculated using the Telcordia (Belcore) SR-332 Method 1, Case 3, ground fixed (output shorted to ground) conditions, Tpcboard=+25 ˚C, full output load, natural air convection. Prebias Startup Converter will start up if the external (4b) Mean Time Before Failure is calculated using the MIL-HDBK-217N2 method, ground benign, +25ºC., full output voltage is less than Vnominal. output load, natural convection. Dynamic Characteristics (5) The On/Off Control Input should use either a switch or an open collector/open drain transistor referenced to -Input Common. A logic gate may also be used by applying appropriate external voltages which do not Dynamic Load Response 50μSec max. to within ±2% of final value exceed +Vin. (50-100% load step, di/dt=1A/μSec) (Note 1) (6) Short circuit shutdown begins when the output voltage degrades approximately 2% from the selected Peak Deviation ±250 mV setting. Start-Up Time 6 mSec for Vout=nominal (Vin On) www.murata-ps.com/support MDC_OKL-T/3-W5 Series.C03 Page 3 of 17 OKL-T/3-W5 Series Programmable Output 3-Amp iLGA SMT PoLs Specification Notes, Cont.: (7) Please observe the voltage input and output specifications in the Voltage Range Graph on page 17. (14) The maximum output capacitive loads depend on the the Equivalent Series Resistance (ESR) of the external output capacitor and, to a lesser extent, the distance and series impedance to the load. Larger caps will reduce (8) Output noise may be further reduced by adding an external filter. At zero output current, the output may contain output noise but may change the transient response. Newer ceramic caps with very low ESR may require lower low frequency components which exceed the ripple specification. The output may be operated indefinitely with capacitor values to avoid instability. Thoroughly test your capacitors in the application. Please refer to the Output no load. Capacitive Load Application Note. (9) All models are fully operational and meet published specifications, including “cold start” at –40˚ C. (15) Do not allow the input voltage to degrade lower than the input undervoltage shutdown voltage at all times. (10) Regulation specifications describe the deviation as the line input voltage or output load current is varied from a Otherwise, you risk having the converter turn off. The undervoltage shutdown is not latching and will attempt to nominal midpoint value to either extreme. recover when the input is brought back into normal operating range. (11) Other input or output voltage ranges will be reviewed under scheduled quantity special order. (16) The outputs are not intended to sink appreciable reverse current. (12) Maximum PC board temperature is measured with the sensor in the center of the converter. (17) “Hiccup” overcurrent operation repeatedly attempts to restart the converter with a brief, full-current output. If the (13) Do not exceed maximum power specifications when adjusting the output trim. overcurrent condition still exists, the restart current will be removed and then tried again. This short current pulse prevents overheating and damaging the converter. Once the fault is removed, the converter immediately recovers normal operation. www.murata-ps.com/support MDC_OKL-T/3-W5 Series.C03 Page 4 of 17 OKL-T/3-W5 Series Programmable Output 3-Amp iLGA SMT PoLs PERFORMANCE DATA AND OSCILLOGRAMS Efficiency vs. Line Voltage and Load Current @ +25˚C. (Vout = 3.3V) Maximum Current Temperature Derating at Sea Level (Vin=5V, Vout=3.3V) 100 3.25 3 0.33 m/s (65 LFM) 2.75 95 2.5 2.25 VIN = 4V VIN = 5V 2 VIN = 5.5V 90 1.75 1.5 1.25 85 1 0.5 1.0 1.5 2.0 2.5 3.0 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 Load Current (Amps) Ambient Temperature (ºC) Output Ripple and Noise (Vin=5V, Vout=3.3V, Iout=3A, Cload=0, ScopeBW=20MHz) On/Off Enable Delay (Vin=5V, Vout=3.3V, Iout=3A, Cload=0) Trace 4=Enable, Trace 2=Vout Step Load Transient Response (Vin=5V, Vout=3.3V, Cload=0, Iout=1.5A to 3A) Step Load Transient Response (Vin=5V, Vout=3.3V, Cload=0, Iout=3A to 1.5A) Trace 2=Vout, 100 mV/div. Trace 4=Iout, 2.5A/div. Trace 2=Vout, 100 mV/div. Trace 4=Iout, 2.5A/div. www.murata-ps.com/support MDC_OKL-T/3-W5 Series.C03 Page 5 of 17 Efficiency (%) Output Current (Amps) OKL-T/3-W5 Series Programmable Output 3-Amp iLGA SMT PoLs PERFORMANCE DATA AND OSCILLOGRAMS Efficiency vs. Line Voltage and Load Current @ +25˚C. (Vout = 2.5V) Maximum Current Temperature Derating at Sea Level (Vin=5V, Vout=2.5V) 100 3.25 3 0.33 m/s (65 LFM) 2.75 95 2.5 2.25 VIN = 3V 2 VIN = 5V 90 VIN = 5.5V 1.75 1.5 1.25 85 1 0.5 1.0 1.5 2.0 2.5 3.0 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 Load Current (Amps) Ambient Temperature (ºC) Output Ripple and Noise (Vin=5V, Vout=2.5V, Iout=3A, Cload=0, ScopeBW=20MHz) On/Off Enable Delay (Vin=5V, Vout=2.5V, Iout=3A, Cload=0) Trace 4=Enable, Trace 2=Vout Step Load Transient Response (Vin=5V, Vout=2.5V, Cload=0, Iout=1.5A to 3A) Step Load Transient Response (Vin=5V, Vout=2.5V, Cload=0, Iout=3A to 1.5A) Trace 2=Vout, 100 mV/div. Trace 4=Iout, 2.5A/div. Trace 2=Vout, 100 mV/div. Trace 4=Iout, 2.5A/div. www.murata-ps.com/support MDC_OKL-T/3-W5 Series.C03 Page 6 of 17 Efficiency (%) Output Current (Amps) OKL-T/3-W5 Series Programmable Output 3-Amp iLGA SMT PoLs PERFORMANCE DATA AND OSCILLOGRAMS Efficiency vs. Line Voltage and Load Current @ +25˚C. (Vout = 1.8V) Maximum Current Temperature Derating at Sea Level (Vin=5V, Vout=1.8V) 100 3.25 3 0.33 m/s (65 LFM) 2.75 95 2.5 2.25 90 VIN = 2.4V 2 VIN = 5V VIN = 5.5V 1.75 85 1.5 1.25 80 1 0.5 1.0 1.5 2.0 2.5 3.0 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 Load Current (Amps) Ambient Temperature (ºC) Output Ripple and Noise (Vin=5V, Vout=1.8V, Iout=3A, Cload=0, ScopeBW=20MHz) On/Off Enable Delay (Vin=5V, Vout=1.8V, Iout=6A, Cload=0) Trace 4=Enable, Trace2=Vout Step Load Transient Response (Vin=5V, Vout=1.8V, Cload=0, Iout=1.5A to 3A) Step Load Transient Response (Vin=5V, Vout=1.8V, Cload=0, Iout=3A to 1.5A) Trace 2=Vout, 100 mV/div. Trace 4=Iout, 2.5A/div. Trace 2=Vout, 100 mV/div. Trace 4=Iout, 2.5A/div. www.murata-ps.com/support MDC_OKL-T/3-W5 Series.C03 Page 7 of 17 Efficiency (%) Output Current (Amps) OKL-T/3-W5 Series Programmable Output 3-Amp iLGA SMT PoLs PERFORMANCE DATA AND OSCILLOGRAMS Efficiency vs. Line Voltage and Load Current @ +25˚C. (Vout = 1.5V) Maximum Current Temperature Derating at Sea Level (Vin=5V, Vout=1.5V) 100 3.25 3 0.33 m/s (65 LFM) 2.75 95 2.5 2.25 90 VIN = 2.4V 2 VIN = 5V 1.75 VIN = 5.5V 85 1.5 1.25 80 1 0.5 1.0 1.5 2.0 2.5 3.0 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 Load Current (Amps) Ambient Temperature (ºC) Output Ripple and Noise (Vin=5V, Vout=1.5V, Iout=3A, Cload=0, ScopeBW=20MHz) On/Off Enable Delay (Vin=5V, Vout=1.5V, Iout=3A, Cload=0) Trace 4=Enable, Trace 2=Vout Step Load Transient Response (Vin=5V, Vout=1.5V, Cload=0, Iout=1.5A to 3A) Step Load Transient Response (Vin=5V, Vout=1.5V, Cload=0, Iout=3A to 1.5A) Trace 2=Vout, 100 mV/div. Trace 4=Iout, 2.5A/div. Trace 2=Vout, 100 mV/div. Trace 4=Iout, 2.5A/div. www.murata-ps.com/support MDC_OKL-T/3-W5 Series.C03 Page 8 of 17 Efficiency (%) Output Current (Amps) OKL-T/3-W5 Series Programmable Output 3-Amp iLGA SMT PoLs PERFORMANCE DATA AND OSCILLOGRAMS Efficiency vs. Line Voltage and Load Current @ +25˚C. (Vout = 1.2V) Maximum Current Temperature Derating at Sea Level (Vin=5V, Vout=1.2V) 100 3.25 3 0.33 m/s (65 LFM) 2.75 95 2.5 2.25 90 2 VIN = 2.4V 1.75 VIN = 5V 85 VIN = 5.5V 1.5 1.25 80 1 0.5 1.0 1.5 2.0 2.5 3.0 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 Load Current (Amps) Ambient Temperature (ºC) Output Ripple and Noise (Vin=5V, Vout=1.2V, Iout=3A, Cload=0, ScopeBW=20MHz) On/Off Enable Delay (Vin=5V, Vout=1.2V, Iout=3A, Cload=0) Trace 4=Enable, Trace 2=Vout Step Load Transient Response (Vin=5V, Vout=1.2V, Cload=0, Iout=1.5A to 3A) Step Load Transient Response (Vin=5V, Vout=1.2V, Cload=0, Iout=3A to 1.5A) Trace 2=Vout, 100 mV/div. Trace 4=Iout, 2.5A/div. Trace 2=Vout, 100 mV/div. Trace 4=Iout, 2.5A/div. www.murata-ps.com/support MDC_OKL-T/3-W5 Series.C03 Page 9 of 17 Efficiency (%) Output Current (Amps) OKL-T/3-W5 Series Programmable Output 3-Amp iLGA SMT PoLs PERFORMANCE DATA AND OSCILLOGRAMS Efficiency vs. Line Voltage and Load Current @ +25˚C. (Vout = 1.0V) Maximum Current Temperature Derating at Sea Level (Vin=5V, Vout=1.0V) 100 3.25 3 0.33 m/s (65 LFM) 95 2.75 2.5 90 2.25 2 85 VIN = 2.4V 1.75 VIN = 5V VIN = 5.5V 80 1.5 1.25 75 1 0.5 1.0 1.5 2.0 2.5 3.0 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 Load Current (Amps) Ambient Temperature (ºC) Output Ripple and Noise (Vin=5V, Vout=1.0V, Iout=3A, Cload=0, ScopeBW=20MHz) On/Off Enable Delay (Vin=5V, Vout=1.0V, Iout=3A, Cload=0) Trace 4=Enable, Trace 2=Vout Step Load Transient Response (Vin=5V, Vout=1.0V, Cload=0, Iout=1.5A to 3A) Step Load Transient Response (Vin=5V, Vout=1.0V, Cload=0, Iout=3A to 1.5A) Trace 2=Vout, 100 mV/div. Trace 4=Iout, 2.5A/div. Trace 2=Vout, 100 mV/div. Trace 4=Iout, 2.5A/div. www.murata-ps.com/support MDC_OKL-T/3-W5 Series.C03 Page 10 of 17 Efficiency (%) Output Current (Amps) OKL-T/3-W5 Series Programmable Output 3-Amp iLGA SMT PoLs MECHANICAL SPECIFICATIONS Top View INPUT/OUTPUT CONNECTIONS 0.043 (1.09) 0.48 NOM. PCB Pin Function (12.19) THK 1 On/Off Control* Bottom View 2 Vin 3 Ground 4 Vout 5 Sense 6 Trim 0.48 7 Ground (12.19) 8 NC 9 Sequence/Tracking** 10 NC 11 NC Side View 12 NC NOTE: *The Remote On/Off can be provided with In case of solder-wicking, this either positive (P suffix) or negative (N terminal is connected to Vout. suffix) logic. **OKL2 models only 0.25 SOLDER PAD NOTES: (6.35) [1] To avoid incorrect contacts with exposed via’s and plated through holes on the bottom of the converter, do not have any exposed copper around the unit aside from our recommended footprint. Except for connections to the pads, keep all external circuits away from the board edges. End View [2] Do not connect any additional components between the Trim pin and Vout or between the Trim and Sense pins. Use only the specified connections. Recommended Footprint Bottom View -through the Board- 12.7 0.50 0.070-0.080 [1.78-2.03mm] 4.57 x 0.180 0.160-0.170 [4.06-4.32mm] 3.43 3 PLACES 0.135 1.14 1.27 0.045 0.050 (14 PLS) 4 3 2 2 3 4 0.420 (10.67) Vin Gnd 0.375 (9.53) Gnd Vin 4.57 3.43 12.40 0.180 0.135 1 0.488 5 5 12.7 Sense On/Off Sense On/Off 0.240 (6.10) 1 C L 0.50 2.29 11 10 NC 0.090 11 NC 4.57 0.150 (3.81) 10 0.180 Seq 6 Trim NC Gnd NC NC Gnd NC Trim1 6 0.060 (1.52) 9 9 Seq 0 12 7 8 8 7 12 2.29 0.040-0.050 [1.02-1.27mm] 0.090 Dimensions are in inches (mm shown for ref. only). SQUARE PAD (9 PLS) 4.57 2.29 Third Angle Projection 0.180 0.090 C Copper Pads L Plating Thickness: 12.40 No Exposed Gold overplate 1.18µ" (0.03µm) 0.488 Copper on Nickel subplate 118.1µ" (3.0µm) Tolerances (unless otherwise specified): Permitted .XX ± 0.02 (0.5) .XXX ± 0.010 (0.25) Angles ± 1˚ Figure 3. OKL-T/3-W5 Mechanical Outline Components are shown for reference only. www.murata-ps.com/support MDC_OKL-T/3-W5 Series.C03 Page 11 of 17 0 0.060 (1.52) Vout 0.150 (3.81) 0.195 (4.95) 0.240 (6.10) 0.330 (8.38) 0.375 (9.53) 0.420 (10.67) Vout1 L00103 YMDX Rev. L00103 YMDX Rev. L00103 YMDX Rev. OKL-T/3-W5 Series Programmable Output 3-Amp iLGA SMT PoLs TAPE AND REEL INFORMATION (MSL RATING 2) Tape Detail 7.40±0.1 Round 2.00±0.1 0.40±0.05 Sprocket +0.1 ø1.50 -0 16.00±0.1 4.00±0.1 Holes B’ B Vacuum Pickup A A’ Pulling direction Point in Center 12.60±0.1 (7.0º) Notes 1) The radius (R) is 0.3mm max. 2) Cumulative tolerance of 10 pitches of the sprocket hole is ±0.2mm. A-A’ SECTION Reel Detail Reel diameter 330.2 Start of pocket tape A End of modules C B Start of Start of modules cover tape in pockets Hub diameter 13.00 Inner diameter 101.6 All dimensions are in millimeters. Reel Information (400 units per reel) Key Description Length (mm) A Tape trailer (no modules) 800 ±40 B Pocket tape length before modules 200 min. C Cover tape length before pocket tape 240 ±40 www.murata-ps.com/support MDC_OKL-T/3-W5 Series.C03 Page 12 of 17 11.50±0.1 1.75±0.1 +0.3 24.00 -0.1 12.60±0.1 (7.0º) B-B’ SECTION OKL-T/3-W5 Series Programmable Output 3-Amp iLGA SMT PoLs TECHNICAL NOTES Start-Up Time Output Voltage Adustment Assuming that the output current is set at the rated maximum, the Vin to Vout Start-Up Time (see Specifications) is the time interval between the The output voltage may be adjusted over a limited range by connecting an point when the ramping input voltage crosses the Start-Up Threshold and external trim resistor (Rtrim) between the Trim pin and Ground. The Rtrim resis- the fully loaded regulated output voltage enters and remains within its tor must be a 1/10 Watt precision metal film type, ±0.5% accuracy or better specified accuracy band. Actual measured times will vary with input source with low temperature coefficient, ±100 ppm/oC. or better. Mount the resistor impedance, external input capacitance, input voltage slew rate and final close to the converter with very short leads or use a surface mount trim resistor. value of the input voltage as it appears at the converter. In the tables below, the calculated resistance is given. Do not exceed the These converters include a soft start circuit to moderate the duty cycle of specified limits of the output voltage or the converter’s maximum power rating its PWM controller at power up, thereby limiting the input inrush current. when applying these resistors. Also, avoid high noise at the Trim input. However, to prevent instability, you should never connect any capacitors to Trim. The On/Off Remote Control interval from On command to Vout regulated OKL-T/3-W5 assumes that the converter already has its input voltage stabilized above the Start-Up Threshold before the On command. The interval is measured Output Voltage Calculated Rtrim (KΩ) from the On command until the output enters and remains within its 3.3 V. 0.44 specified accuracy band. The specification assumes that the output is fully 2.5 V. 0.63 loaded at maximum rated current. Similar conditions apply to the On to Vout regulated specification such as external load capacitance and soft start 2.0 V. 0.86 circuitry. 1.8 V. 1.0 1.5 V. 1.33 Recommended Input Filtering 1.2 V. 2.0 The user must assure that the input source has low AC impedance to provide dynamic stability and that the input supply has little or no inductive 1.0 V. 3.0 content, including long distributed wiring to a remote power supply. The 0.6 V. ∞ (open) converter will operate with no additional external capacitance if these Resistor Trim Equation, OKL-T/3-W5 models: conditions are met. 1.2 _____________ RTRIM (kW) = For best performance, we recommend installing a low-ESR capacitor VOUT – 0.6 immediately adjacent to the converter’s input terminals. The capacitor Do not connect any additional components between the Vtrim pin and Vout should be a ceramic type such as the Murata GRM32 series or a polymer or between the Trim and Sense pins. Use only the specified connections as type. Initial suggested capacitor values are 10 to 22 µF, rated at twice the recommended per this data sheet. expected maximum input voltage. Make sure that the input terminals do not go below the undervoltage shutdown voltage at all times. More input Input Fusing bulk capacitance may be added in parallel (either electrolytic or tantalum) Certain applications and/or safety agencies may require fuses at the inputs if needed. of power conversion components. Fuses should also be used when there is the possibility of sustained input voltage reversal which is not current- Recommended Output Filtering limited. For greatest safety, we recommend a fast blow fuse installed in the The converter will achieve its rated output ripple and noise with no ungrounded input supply line. additional external capacitor. However, the user may install more exter- nal output capacitance to reduce the ripple even further or for improved The installer must observe all relevant safety standards and regulations. dynamic response. Again, use low-ESR ceramic (Murata GRM32 series) For safety agency approvals, install the converter in compliance with the or polymer capacitors. Initial values of 10 to 47 µF may be tried, either end-user safety standard, i.e. IEC/EN/UL 60950-1. single or multiple capacitors in parallel. Mount these close to the converter. Input Under-Voltage Shutdown and Start-Up Threshold Measure the output ripple under your load conditions. Under normal start-up conditions, converters will not begin to regulate Use only as much capacitance as required to achieve your ripple and properly until the ramping-up input voltage exceeds and remains at the noise objectives. Excessive capacitance can make step load recovery Start-Up Threshold Voltage (see Specifications). Once operating, convert- sluggish or possibly introduce instability. Do not exceed the maximum rated ers will not turn off until the input voltage drops below the Under-Voltage output capacitance listed in the specifications. Shutdown Limit. Subsequent restart will not occur until the input voltage rises again above the Start-Up Threshold. This built-in hysteresis prevents Input Ripple Current and Output Noise any unstable on/off operation at a single input voltage. All models in this converter series are tested and specified for input reflected ripple current and output noise using designated external input/ Users should be aware however of input sources near the Under-Voltage output components, circuits and layout as shown in the figures below. The Shutdown whose voltage decays as input current is consumed (such as Cbus and Lbus components simulate a typical DC voltage bus. Please note capacitor inputs), the converter shuts off and then restarts as the external that the values of Cin, Lbus and Cbus will vary according to the specific capacitor recharges. Such situations could oscillate. To prevent this, make converter model. sure the operating input voltage is well above the UV Shutdown voltage AT ALL TIMES. www.murata-ps.com/support MDC_OKL-T/3-W5 Series.C03 Page 13 of 17 OKL-T/3-W5 Series Programmable Output 3-Amp iLGA SMT PoLs TO CURRENT OSCILLOSCOPE PROBE +VIN +VOUT LBUS + – VIN CBUS CIN SCOPE RLOAD + C1 C2 – -VIN -VOUT CIN = 2 x 100µF, ESR < 700mΩ @ 100kHz CBUS = 1000µF, ESR < 100mΩ @ 100kHz LBUS = 1µH C1 = 1µF Figure 4. Measuring Input Ripple Current C2 = 10µF LOAD 2-3 INCHES (51-76mm) FROM MODULE Figure 5. Measuring Output Ripple and Noise (PARD) Minimum Output Loading Requirements Output Voltage Sequencing All models regulate within specification and are stable under no load to full The OKL modules include a sequencing feature that enables users to load conditions. Operation under no load might however slightly increase implement various types of output voltage sequencing in their applications. output ripple and noise. This is accomplished via an additional sequencing pin. When not using the Thermal Shutdown sequencing feature, either tie the sequence pin to Vin or leave it uncon- To prevent many over temperature problems and damage, these converters nected. include thermal shutdown circuitry. If environmental conditions cause the When an analog voltage is applied to the sequence pin, the output temperature of the DC/DC’s to rise above the Operating Temperature Range voltage tracks this voltage until the output reaches the set-point voltage. up to the shutdown temperature, an on-board electronic temperature The final value of the sequence voltage must be set higher than the set- sensor will power down the unit. When the temperature decreases below point voltage of the module. The output voltage follows the voltage on the the turn-on threshold, the converter will automatically restart. There is a sequence pin on a one-to-one volt basis. By connecting multiple modules small amount of hysteresis to prevent rapid on/off cycling. together, multiple modules can track their output voltages to the voltage CAUTION: If you operate too close to the thermal limits, the converter applied on the sequence pin. may shut down suddenly without warning. Be sure to thoroughly test your For proper voltage sequencing, first, input voltage is applied to the application to avoid unplanned thermal shutdown. module. The On/Off pin of the module is left unconnected (or tied to GND Temperature Derating Curves for negative logic modules or tied to Vin for positive logic modules) so that the module is ON by default. After applying input voltage to the module, The graphs in this data sheet illustrate typical operation under a variety of conditions. The Derating curves show the maximum continuous ambient air a minimum 10msec delay is required before applying voltage on the sequence pin. During this time, a voltage of 50mV (± 20 mV) is maintained temperature and decreasing maximum output current which is accept- able under increasing forced airflow measured in Linear Feet per Minute on the sequence pin. This delay gives the module enough time to complete its internal powerup soft-start cycle. During the delay time, the sequence (“LFM”). Note that these are AVERAGE measurements. The converter will accept brief increases in current or reduced airflow as long as the average pin should be held close to ground (nominally 50mV ± 20 mV). This is re- quired to keep the internal opamp out of saturation thus preventing output is not exceeded. overshoot during the start of the sequencing ramp. By selecting resistor R1 Note that the temperatures are of the ambient airflow, not the converter according to the following equation itself which is obviously running at higher temperature than the outside 23500 air. Also note that very low flow rates (below about 25 LFM) are similar to R1 = ———— ohms, Vin – 0.05 “natural convection”, that is, not using fan-forced airflow. the voltage at the sequencing pin will be 50mV when the sequencing Murata Power Solutions makes Characterization measurements in a signal is at zero. See figure 6 for R1 connection for the sequencing signal to closed cycle wind tunnel with calibrated airflow. We use both thermocou- the SEQ pin. ples and an infrared camera system to observe thermal performance. http://www.murata-ps.com/datasheet/?http:// CAUTION: These graphs are all collected at slightly above Sea Level www.murata-ps.com/data/apnotes/dcan-61.pdf Click here to view Application Note DCAN-61 altitude. Be sure to reduce the derating for higher density altitude. www.murata-ps.com/support MDC_OKL-T/3-W5 Series.C03 Page 14 of 17 OKL-T/3-W5 Series Programmable Output 3-Amp iLGA SMT PoLs Output Current Limiting Output Capacitive Load Current limiting inception is defined as the point at which full power falls below the rated tolerance. See the Performance/Functional Specifica- These converters do not require external capacitance added to achieve tions. Note particularly that the output current may briefly rise above its rated specifications. Users should only consider adding capacitance to rated value in normal operation as long as the average output power is reduce switching noise and/or to handle spike current load steps. Install not exceeded. This enhances reliability and continued operation of your only enough capacitance to achieve noise objectives. Excess external application. If the output current is too high, the converter will enter the capacitance may cause regulation problems, degraded transient response short circuit condition. and possible oscillation or instability. Output Short Circuit Condition When a converter is in current-limit mode, the output voltage will drop as the output current demand increases. If the output voltage drops too low (approximately 98% of nominal output voltage for most models), the magnetically coupled voltage used to develop primary side voltages will also drop, thereby shutting down the PWM controller. Following a time-out period, the PWM will restart, causing the output voltage to begin ramping up to its appropriate value. If the short-circuit condition persists, another shutdown cycle will initiate. This rapid on/off cycling is called “hiccup mode”. The hiccup cycling reduces the average output current, thereby preventing excessive internal temperatures and/or component damage. A short circuit can be tolerated indefinitely. OKL -T +Vin The “hiccup” system differs from older latching short circuit systems because you do not have to power down the converter to make it restart. The system will automatically restore operation as soon as the short circuit condition is removed. 470K Remote On/Off Control + The OKL Series power modules can be specified with either a positive or nega- tive logic type. See Figures 7 and 8 for On/Off circuit control. In the positive logic OUT R1 on/off option the unit turns on during a logic high on the On/Off pin and turns off – during a logic low. In a negative logic on/off option, the unit turns off during logic SEQ 10K high and on during logic low. The On/Off signal should always be reference to SEQ Control Voltage ground. For positive or negative option, leaving then On/Off pin disconnected will turn the unit on when input voltage is present. GND Positive—Units are enabled when the on/off pin is left open or is pulled Figure 6. Sequencing Signal Interface of Module high to +Vin. The On/Off circuit control is shown in figure 7. When the external transistor Q1 is in the off state, the internal PWM enable pin is pull high causing the unit to turn on. When Q1 is turn on, the On/Off pin is pulled low and the units is off. Rp should be around 20K ohms. OKL N Module Negative—Units are enabled when the ON/Off is open or brought to within a low voltage (see specifications) with respect to –Vin. The unit is off +Vin +Vin when the ON/Off is pulled high with respect to –Vin (see specifications). The PWM E On/Off circuitry is shown in figure 8. The On/Off pin should be pulled high Rp with an external pull-up resistor (20K ohms). When Q1 is in the off state, On/Off Q3 the On/Off pin is pulled high, transistor Q3 is turn on and the unit is off. To GND turn on the unit, Q1 is turn on, pulling the On/Off pin low and turning Q3 off resulting on the unit being on. Q1 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 GND GND (see specifications) between the time of On/Off Control activation and BOM  Rp  20K stable, regulated output. This time will vary slightly with output load type BOM  Q1  Q SMT MOS P 30V and current and input conditions. Figure 7. On/Off Circuit Control for Using Negative On/Off Logic www.murata-ps.com/support MDC_OKL-T/3-W5 Series.C03 Page 15 of 17 OKL-T/3-W5 Series Programmable Output 3-Amp iLGA SMT PoLs Voltage Range Graph Soldering Guidelines Please observe the limits below for voltage input and output ranges. These Murata Power Solutions recommends the specifications below when installing these limits apply at all output currents. converters. These specifications vary depending on the solder type. Exceeding these specifications may cause damage to the product. Your production environment 6 may differ therefore please thoroughly review these guidelines with your process engineers. 5 4 Reflow Solder Operations for surface-mount products (SMT) Vin=2.4V / Vout=1.8V For Sn/Ag/Cu based solders: 3 Preheat Temperature Less than 1 ºC. per second Time over Liquidus 45 to 75 seconds 2 Maximum Peak Temperature 260 ºC. 1 Upper Limit Cooling Rate Less than 3 ºC. per second Lower Limit For Sn/Pb based solders: 0 Preheat Temperature Less than 1 ºC. per second 0.5 1 1.5 2 2.5 3 3.5 Output Voltage (V) Time over Liquidus 60 to 75 seconds Maximum Peak Temperature 235 ºC. Cooling Rate Less than 3 ºC. per second Recommended Lead-free Solder Reflow Profile Peak Temp. 250 235-260° C 200 Reflow Zone 150 Soaking Zone time above 217° C 45-75 sec 120 sec max 100 <1.5° C/sec High trace = normal upper limit Preheating Zone Low trace = normal lower limit 50 240 sec max 0 0 30 60 90 120 150 180 210 240 270 300 Time (sec) www.murata-ps.com/support MDC_OKL-T/3-W5 Series.C03 Page 16 of 17 Input Voltage (V) Temperature (°C) OKL-T/3-W5 Series Programmable Output 3-Amp iLGA SMT PoLs 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. IR Transparent The system includes a precision low fl ow-rate anemometer, optical window Variable variable speed fan, power supply input and load controls, Unit under speed fan temperature gauges, and adjustable heating element. test (UUT) The IR camera monitors the thermal performance of the IR Video Unit Under Test (UUT) under static steady-state conditions. A Camera special optical port is used which is transparent to infrared wavelengths. Both through-hole and surface mount converters are soldered down to a host carrier board for realistic heat absorption and spreading. Both longitudinal and transverse Heating airfl ow studies are possible by rotation of this carrier board element since there are often signifi cant differences in the heat Precision dissipation in the two airfl ow directions. The combination of low-rate adjustable airfl ow, adjustable ambient heat, and adjustable anemometer Input/Output currents and voltages mean that a very wide 3” below UUT 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 turbu- temperature lence infl uences the effective heat transfer characteristics sensor and gives false readings. Excess turbulence removes more heat from some surfaces and less heat from others, possibly Airflow causing uneven 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 8. 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 MDC_OKL-T/3-W5 Series.C03 Page 17 of 17