OKR-T/30-W12-C www.murata-ps.com Adjustable Output 30-Amp SIP-mount DC-DC Converters Typical unit FEATURES PRODUCT OVERVIEW 700 KHz operation The OKR-T/30-W12-C model is a miniature SIP non-isolated Point-of-Load (PoL) DC-DC power converters measuring only 1.2 x 0.71 x 0.61 inches (30.5 x 18.1 x 15.5 mm). The wide input range is 5.5 to 13.8 Volts DC. Based on 700 KHz synchronous buck topology, the high power conversion efficient Point of Load (PoL) module features programmable output voltage and On/Off control, under voltage lock out (UVLO), overcurrent and over temperature protections. These units meet all standard UL/EN/ IEC 60950-1 safety certifications and RoHS-6 hazardous substance compliance. 5.5-13.8 Vdc input voltage range Programmable output voltage from 0.591-6.0 VDC High power conversion efficiency at 95% Outstanding thermal derating performance Over temperature and over current protection Forced Positive On/off option for EMC 1.2 x 0.71 x 0.61 inches (30.5 x 18.1 x 15.5 mm) Meets UL/EN/IEC 60950-1 safety certification RoHS-6 hazardous substance compliance Power Good +Vin F1 On/Off Control +Vout t4XJUDIJOH Controller t'JMUFST t$VSSFOU4FOTF External DC Power Source Trim Open = Off Closed = Off (Positive On/Off) Reference and Error Amplifier Common Common Figure 1. Simplified Block Diagram For full details go to www.murata-ps.com/rohs www.murata-ps.com/support MDC_OKR-T/30-W12-C.A04 Page 1 of 10 OKR-T/30-W12-C Adjustable Output 30-Amp SIP-mount DC-DC Converters PERFORMANCE SPECIFICATIONS SUMMARY AND ORDERING GUIDE Output Root Model Vout (Volts) OKR-T/30-W12-C 0.591-6 Input R/N (mVp-p) Iout (Amps Power max) (Watts) Max. 30 180 25 Regulation (Max.) Line Load ±0.15% ±0.15% ➀ Dimensions are in inches (mm). ➁ Ripple and Noise is shown at Vout=1.8V. See specs for details. ➂ All specifications are at nominal line voltage, Vout = 5V and full load, +25 °C unless Package Efficiency Vin Nom. (Volts) Range (Volts) Iin, no load (mA) Iin, full load (Amps) Min. Typ. Dimensions: inches (mm) 12 5.5-13.8 150 13.2 93% 95% 1.2 x 0.71 x 0.61 (30.5 x 18.1 x 15.5) otherwise noted. Models are tested with an external 22μF input capacitor and external 22μF (1) ceramic/100μF (1) polymer output capacitors. Vin must be a minimum of 2V higher than Vout. PART NUMBER STRUCTURE OK R - T / 30 - W12 - C Okami Non-isolated PoL SIP-Mount Output Voltage Range T = Trimmable, 0.591-6 Volts RoHS Hazardous Substance Compliance C = RoHS-6 (does not claim EU RoHS exemption 7b–lead in solder) Wide Input Voltage Range W12 = 5.5-13.8 Volts Maximum Rated Output Current in Amps www.murata-ps.com/support MDC_OKR-T/30-W12-C.A04 Page 2 of 10 OKR-T/30-W12-C Adjustable Output 30-Amp SIP-mount DC-DC Converters FUNCTIONAL SPECIFICATIONS ABSOLUTE MAXIMUM RATINGS Conditions Full power operation Input Voltage, Continuous Output Power Current-limited, no damage, short-circuit protected Output Current Minimum 5.5 Typical/Nominal 12 0 Maximum 13.8 180 30 Units Vdc W A Vin Vdc 7 Vdc Vin = Zero (no power) -40 125 °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 Operating voltage range 5.5 12 13.8 Vdc Recommended External Fuse Fast blow 40 A Turn On/Start-up threshold Rising input voltage 5.25 5.40 5.55 Vdc Undervoltage Shutdown 4.25 4.35 4.55 Vdc Internal Filter Type C-Type On/Off Control Power Good Pin Storage Temperature Range Input current Full Load Conditions Low Line Inrush Transient Short Circuit Input Current No Load Input Current Shut-Down Mode Input Current Reflected (back) ripple current Vin = nominal (5Vset) Vin @ min, 5Vset Vout = 5V Measured at input with specified filter Cin = 100μF, Cbus = 1000μF, Lbus = 1μH 13.2 22.3 1 NA 150 20 A A A2-Sec. mA mA mA 10 mA, pk-pk 95 % GENERAL and SAFETY Efficiency Safety Calculated MTBF Calculated MTBF 12Vin, 5Vout, 30A Certified to UL-60950-1, CSA-C22.2 No.60950-1, IEC/60950-1, 2nd edition Per Telcordia SR332, issue 1 class 3, ground fixed, Tambient = +25˚C Per Mil-HDBK-217N2 Method 93 Yes 6,737,187 Hours 9,074,537 Hours DYNAMIC CHARACTERISTICS 700 4 Fixed Switching Frequency Startup Time Dynamic Load Response (Iout 50% - 75% nom, within 2% of Vout set, di/dt = 1A/μSec) Dynamic Load Peak Deviation 10 KHz mS 50 μSec 150 mV 5 1.3 0.7 6 V mA V μA mV +16.2 -9.2 % % 180 W 6 5 Vdc % of Vnom. % Vo set 30 56 A A FEATURES and OPTIONS Remote On/Off Control Positive Logic, ON state Control Current, ON state Positive Logic, OFF state Control Current, OFF state Remote Sense Power Good Option PGOOD, Open Drain Configuration, Sinking: Vout window for PGOOD: Upper limit Vout window for PGOOD: Lower limit Pin pulled high Pin open or pulled low open collector/drain 1.2 0.04 0 0 +8.3 -15 +12.5 -12.5 OUTPUT Total Output Power Voltage Nominal Output Voltage Range Setting Accuracy Output Voltage Overshoot-Startup Current Output Current Range Current Limit Inception 0 See trim formula At 50% load Continuous 98% of Vnom., after warmup 0.591 ±1.5 0 37 47 www.murata-ps.com/support MDC_OKR-T/30-W12-C.A04 Page 3 of 10 OKR-T/30-W12-C Adjustable Output 30-Amp SIP-mount DC-DC Converters FUNCTIONAL SPECIFICATIONS (CONT.) OUTPUT (CONT.) Conditions Minimum Typical/Nominal Maximum Units Short Circuit Hiccup technique, autorecovery within ±1% of Vout Short Circuit Current Short Circuit Duration (remove short for recovery) Regulation Total Regulation Band Line Regulation Load Regulation Ripple and Noise Temperature Coefficient Maximum Capacitive Loading 2.87 A Output shorted to ground, no damage -3 Vin = min to max, output @ nominal load Min load to max load 1.8Vo, 12Vin 3 ±0.15 ±0.15 25 15 0.02 1000 2400 Low ESR; > 1 mohm ESR > 15 mohm % Vo set % % mV pk-pk % of Vnom./°C μF μF MECHANICAL LxWxH Outline Dimensions 1.2 x 0.71 x 0.61 30.5 x 18.1 x 15.5 0.44 12.4 Weight Inches mm Ounces Grams ENVIRONMENTAL Operating Ambient Temperature Range Storage Temperature RoHS rating full power, all output voltages, see derating curves Vin = Zero (no power) 0 70 °C -40 125 °C RoHS-6 Trim Connections Output Voltage Adustment The output voltage may be adjusted over a limited range by connecting an external trim resistor (Rtrim) between the Trim pin and (-)Trim. The Rtrim resistor must be a 1/10 Watt precision metal film type, ±0.5% accuracy or better with low temperature coefficient, ±100 ppm/oC. or better. Mount the resistor close to the converter with very short leads or use a surface mount trim resistor. In the tables below, the calculated resistance is given. Do not exceed the specified limits of the output voltage or the converter’s maximum power rating when applying these resistors. Also, avoid high noise at the Trim input. However, to prevent instability, you should never connect any capacitors to Trim. OKR-T/30-W12-C Output Voltage +VOUT RTRIM Trim (-)Trim RLOAD Ground Resistor Trim Equation, OKR-T/30-W12-C: 1.182 RTRIM (kΩ) = _____________ (VOUT – 0.591) Calculated Rtrim (Ω) 6 V. 218.5 5 V. 268 3.3 V. 436 2.5 V. 619 1.8 V. 978 1.5 V. 1300 1.2 V. 1940 1.0 V. 2890 0.591 V. ∞ (open) www.murata-ps.com/support MDC_OKR-T/30-W12-C.A04 Page 4 of 10 OKR-T/30-W12-C Adjustable Output 30-Amp SIP-mount DC-DC Converters OKR-T/30-W12-C PERFORMANCE DATA 35 34 33 32 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 Temperature Derating @1.8Vout Vin 12V (air flow from Pin 13 to Pin 1 on PCB) Output Current (Amps) Output Current (Amps) Temperature Derating @1Vout Vin 12V (air flow from Pin 13 (input) to Pin 1(output) on PCB) Still Air .5 m/s 1.0 m/s 1.5 m/s 2.0 m/s 30 35 40 45 50 55 60 65 70 75 80 35 34 33 32 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 85 Still Air .5 m/s 1.0 m/s 1.5 m/s 2.0 m/s 30 35 40 45 50 Ambient Temperature (°C) Still Air .5 m/s 1.0 m/s 1.5 m/s 2.0 m/s 30 35 40 45 50 55 60 65 70 75 80 85 35 34 33 32 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 40 Output Current (Amps) 75 80 85 30 35 40 45 50 55 60 65 70 75 80 85 Thermal Reference Point Thermal reference point 115°C max. (L1) Still Air .5 m/s 1.0 m/s 1.5 m/s 2.0 m/s 35 70 Ambient Temperature (°C) Temperature Derating @5Vout Vin 12 (air flow from Pin 13 to Pin 1 on PCB) 30 65 Still Air .5 m/s 1.0 m/s 1.5 m/s 2.0 m/s Ambient Temperature (°C) 35 34 33 32 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 60 Temperature Derating @3.3Vout Vin 12 (air flow from Pin 13 to Pin 1 on PCB) Output Current (Amps) Output Current (Amps) Temperature Derating @2.5Vout Vin 12 (air flow from Pin 13 to Pin 1 on PCB) 35 34 33 32 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 55 Ambient Temperature (°C) 45 50 55 60 65 70 75 80 85 Ambient Temperature (°C) www.murata-ps.com/support MDC_OKR-T/30-W12-C.A04 Page 5 of 10 OKR-T/30-W12-C Adjustable Output 30-Amp SIP-mount DC-DC Converters MECHANICAL SPECIFICATIONS INPUT/OUTPUT CONNECTIONS OKR-T/30-W12-C TOP VIEW FRONT VIEW [30.5] 1.20 END VIEW [2.25] 0.088 [11.7] 0.46 MAX [6.4] 0.25 MAX Pin Function J1-1 Vout J1-2 Vout J1-3 Vout J1-4 PGND J1-5 PGND J1-6 Enable J1-7 -Trim J1-8 +Trim J1-9 PGood J1-10 -Sense J1-11 +Sense J1-12 Vin J1-13 Vin [15.5] 0.61 [2.00] 0.079 [3.6] 0.14 [6.00] 0.236 [0.76±0.05] .030±.002 [26.00] 1.024 DIMENSIONS ARE IN INCHES [mm] TOLERANCES: 2 PLACE .02 3 PLACE .010 ANGLES: 1° COMPONENTS SHOWN ARE FOR REFERENCE ONLY ISOMETRIC VIEW MATERIAL: .030 HEADER PINS: COPPER ALLOY SUPPORT PINS: TIN PLATED BRASS FINISH: (ALL HEADER PINS) 200μ" MIN MATTE TIN OVER NICKEL (40μ" MIN) Figure 3. OKR-T/30-W12-C Component locations are typical. Dimensions are in inches (mm shown for ref. only). Third Angle Projection Tolerances (unless otherwise specified): .XX ± 0.02 (0.5) .XXX ± 0.010 (0.25) Angles ± 2˚ Components are shown for reference only. www.murata-ps.com/support MDC_OKR-T/30-W12-C.A04 Page 6 of 10 OKR-T/30-W12-C Adjustable Output 30-Amp SIP-mount DC-DC Converters RECOMMENDED FOOTPRINT (VIEW FROM TOP) [30.99] 1.220 [2.73] 0.107 [0.89] .035-.040 1 2 3 4 5 6 7 8 9 10 11 12 13 [12.19] 0.480 [19.05] 0.750 [2.00] 0.079 [6.00] 0.236 [26.00] 1.024 STANDARD PACKAGING FOAM PADS EACH STATIC DISSIPATIVE POLYETHYLENE FOAM TRAY ACCOMMODATES 35 CONVERTERS IN A 5 X 7 ARRAY [108.0±6.4] 4.25±.25 CLOSED HEIGHT CORRUGATED CARTON [279.4±6.4] 11.00±.25 35 UNITS PER TRAY 3 TRAYS PER CARTON MPQ = 105 UNITS [266.7±6.4] 10.50±.25 Dimensions are in inches (mm shown for ref. only). Third Angle Projection Tolerances (unless otherwise specified): .XX ± 0.02 (0.5) .XXX ± 0.010 (0.25) Angles ± 2˚ Components are shown for reference only. www.murata-ps.com/support MDC_OKR-T/30-W12-C.A04 Page 7 of 10 OKR-T/30-W12-C Adjustable Output 30-Amp SIP-mount DC-DC Converters TECHNICAL NOTES Input Fusing Certain applications and/or safety agencies may require fuses at the inputs of power conversion components. Fuses should also be used when there is the possibility of sustained input voltage reversal which is not current-limited. For greatest safely, we recommend a fast blow fuse installed in the ungrounded input supply line. The installer must observe all relevant safety standards and regulations. For safety agency approvals, install the converter in compliance with the end-user safety standard, i.e. IEC/EN/UL 60950-1. Input Under-Voltage Shutdown and Start-Up Threshold Under normal start-up conditions, converters will not begin to regulate properly until the ramping-up input voltage exceeds and remains at the Start-Up Threshold Voltage (see Specifications). Once operating, converters will not turn off until the input voltage drops below the Under-Voltage Shutdown Limit. Subsequent restart will not occur until the input voltage rises again above the Start-Up Threshold. This built-in hysteresis prevents any unstable on/off operation at a single input voltage. Users should be aware however of input sources near the Under-Voltage Shutdown whose voltage decays as input current is consumed (such as capacitor inputs), the converter shuts off and then restarts as the external capacitor recharges. Such situations could oscillate. To prevent this, make sure the operating input voltage is well above the UV Shutdown voltage AT ALL TIMES. Start-Up Time 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 point when the ramping input voltage crosses the Start-Up Threshold and the fully loaded regulated output voltage enters and remains within its specified accuracy band. Actual measured times will vary with input source impedance, external input capacitance, input voltage slew rate and final value of the input voltage as it appears at the converter. These converters include a soft start circuit to moderate the duty cycle of its PWM controller at power up, thereby limiting the input inrush current. The On/Off Remote Control interval from On command to Vout regulated assumes that the converter already has its input voltage stabilized above the Start-Up Threshold before the On command. The interval is measured from the On command until the output enters and remains within its specified accuracy band. The specification assumes that the output is fully loaded at maximum rated current. Similar conditions apply to the On to Vout regulated specification such as external load capacitance and soft start circuitry. Recommended Input Filtering 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 content, including long distributed wiring to a remote power supply. The converter will operate with no additional external capacitance if these conditions are met. For best performance, we recommend installing a low-ESR capacitor immediately adjacent to the converter’s input terminals. The capacitor should be a ceramic type such as the Murata GRM32 series or a polymer type. Initial suggested capacitor values are 10 to 22 μF, rated at twice the expected maximum input voltage. Make sure that the input terminals do not go below the undervoltage shutdown voltage at all times. More input bulk capacitance may be added in parallel (either electrolytic or tantalum) if needed. Recommended Output Filtering The minimum external output capacitance required for proper operation is 50uF ceramic type. The maximum external output capacitance is 100uF ceramic and 470uF POSCAP. Operating outside of these minimum and maximum limits may affect the performance of the unit. Input Ripple Current and Output Noise All models in this converter series are tested and specified for input reflected ripple current and output noise using designated external input/output components, circuits and layout as shown in the figures below. In the figure below, the Cbus and Lbus components simulate a typical DC voltage bus. Please note that the values of Cin, Lbus and Cbus will vary according to the specific converter model. TO OSCILLOSCOPE CURRENT PROBE +VIN VIN + – + – LBUS CBUS CIN -VIN CIN = 2 x 100μF, ESR < 700mΩ @ 100kHz CBUS = 1000μF, ESR < 100mΩ @ 100kHz LBUS = 1μH Figure 4: Measuring Input Ripple Current In the figure below, the two copper strips simulate real-world printed circuit impedances between the power supply and its load. In order to minimize circuit errors and standardize tests between units, scope measurements should be made using BNC connectors or the probe ground should not exceed one half inch and soldered directly to the test circuit. +VOUT Cout SCOPE RLOAD -VOUT Cout=-5x10uF LOAD 2-3 INCHES (51-76mm) FROM MODULE Figure 5: Measuring Output Ripple and Noise (PARD) www.murata-ps.com/support MDC_OKR-T/30-W12-C.A04 Page 8 of 10 OKR-T/30-W12-C Adjustable Output 30-Amp SIP-mount DC-DC Converters Minimum Output Loading Requirements All models regulate within specification and are stable under no load to full load conditions. Operation under no load might however slightly increase output ripple and noise. Thermal Shutdown To prevent many over temperature problems and damage, these converters include thermal shutdown circuitry. If environmental conditions cause the temperature of the 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 converter will automatically restart. There is a small amount of hysteresis to prevent rapid on/off cycling. The temperature sensor is typically located adjacent to the switching controller, approximately in the center of the unit. See the Performance and Functional Specifications. CAUTION: If you operate too close to the thermal limits, the converter may shut down suddenly without warning. Be sure to thoroughly test your application to avoid unplanned thermal shutdown. Temperature Derating Curves The graphs in this data sheet illustrate typical operation under a variety of conditions. The Derating curves show the maximum continuous ambient air 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. Note that the temperatures are of the ambient airflow, not the converter itself which is obviously running at higher temperature than the outside air. Also note that very low flow rates (below about 25 LFM) are similar to “natural convection,” that is, not using fan-forced airflow. Murata Power Solutions makes Characterization measurements in a closed cycle wind tunnel with calibrated airflow. We use both thermocouples and an infrared camera system to observe thermal performance. CAUTION: If you routinely or accidentally exceed these Derating guidelines, the converter may have an unplanned Over Temperature shut down. Also, these graphs are all collected at slightly above Sea Level altitude. Be sure to reduce the derating for higher density altitude. 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. 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. External Enable On/Off Control The forced On/Off enable option uses positive logic for the external control. The converter may be powered ON by applying a positive voltage (logic HI) between the On/Off pin and the negative power input (-Vin). This positive voltage is referred to –Vin and must be in the range of at least +1.5V and not to exceed the power supply input voltage (+Vin). The current drain is 1 mA max. when turned on. If the On/Off pin is left open, an internal 100 KΩ pulldown resistor will turn the converter OFF. The OFF condition may also be commanded by grounding the pin or from an external logic LO voltage not to exceed +0.4 Volts. All voltages are referred to the –Vin negative power input. If you wish to control the On/Off circuit by external logic rather than a switch, carefully compare your logic threshold voltages with that of the On/Off input. The circuit below indicates the equivalent input. Please avoid false signals from ground bounce errors on the On/Off control. Vin Output Current Limiting Current limiting inception is defined as the point at which full power falls below the rated tolerance. See the Performance/Functional Specifications. Note particularly that the output current may briefly rise above its rated value in normal operation as long as the average output power is not exceeded. This enhances reliability and continued operation of your application. If the output current is too high, the converter will enter the short circuit condition. Figure 6. On/Off Control Circuit www.murata-ps.com/support MDC_OKR-T/30-W12-C.A04 Page 9 of 10 OKR-T/30-W12-C Adjustable Output 30-Amp SIP-mount DC-DC Converters Soldering Guidelines Murata Power Solutions recommends the specifications below when installing these converters. These specifications vary depending on the solder type. Exceeding these specifications may cause damage to the product. Your production environment may differ; therefore please thoroughly review these guidelines with your process engineers. Wave Solder Operations for through-hole mounted products (THMT) For Sn/Ag/Cu based solders: For Sn/Pb based solders: Maximum Preheat Temperature 115° C. Maximum Preheat Temperature Maximum Pot Temperature 270° C. Maximum Pot Temperature 250° C. Maximum Solder Dwell Time 7 seconds Maximum Solder Dwell Time 6 seconds Murata Power Solutions, Inc. 11 Cabot Boulevard, Mansfield, MA 02048-1151 U.S.A. ISO 9001 and 14001 REGISTERED 105° C. This product is subject to the following operating requirements and the Life and Safety Critical Application Sales Policy: Refer to: http://www.murata-ps.com/requirements/ Murata Power Solutions, Inc. makes no representation that the use of its products in the circuits described herein, or the use of other technical information contained herein, will not infringe upon existing or future patent rights. The descriptions contained herein do not imply the granting of licenses to make, use, or sell equipment constructed in accordance therewith. Specifications are subject to change without notice. © 2016 Murata Power Solutions, Inc. www.murata-ps.com/support MDC_OKR-T/30-W12-C.A04 Page 10 of 10