NON-ISOLATED DC/DC CONVERTERS 4.5 Vdc - 13.8 Vdc Input VRP1-20E1AC 0.591 Vdc - 5.1 Vdc/20 A Output RoHS Compliant Rev. A • Non-Isolated • Wide Output Trim Range • High Efficiency • Output Over-Voltage Shutdown • Fixed Switching Frequency • OCP/SCP • Low Cost • Low Output Ripple • Excellent Thermal Performance • Power Good Signal • Wide Input Voltage Range • Remote On/Off Description The VRP1-20E1AC is a non-isolated dc/dc converter that operates over a wide range of input voltage (Vin = 4.5 Vdc ~ 13.8 Vdc). This unit can provide a precisely regulated output voltage from 0.591 Vdc to 5.1 Vdc and can deliver up to 20 A of output current. This unit is designed to be highly efficient and low cost. The converter is provided in an industry standard package. Part Selection Output Voltage Input Voltage 0.591 Vdc - 5.1 Vdc 4.5 Vdc - 13.8 Vdc Max. Output Current 20 A Max. Output Power 100 W Typical Efficiency 94% Model Number Active High VRP1-20E1AC Notes: 1. All part numbers above indicate RoHS 6. Change the second letter "R" to "7" for RoHS 5 part numbers. 2. Add “G” suffix at the end of the model numbers listed above to indicate “Tray Packaging”. Absolute Maximum Ratings Parameter Input Voltage (continuous) Min -0.3 V Typ - Output Enable Terminal Voltage Max 15 V -0.3 V - 15 V Ambient Temperature 0 °C - 70 °C Storage Temperature -40 °C - 125 °C Min Typ Max 4.5 V 1.3*Vo 12 V 12 V 13.8 V 13.8 V Input Current (full load) - - 20 A Input Current (No load) - 150 mA 300 mA Remote Off Input Current - 50 mA - Input Reflected Ripple Current (pk-pk) - 50 mA 100 mA Input Reflected Ripple Current (rms) - 20 mA 40 mA I2t Inrush Current Transient - - 1 A2s Notes Input Specifications Parameter Notes Input Voltage Vo﹤ 3.45 V Vo ≥ 3.45 V Turn-on Voltage Threshold - 4.2 V - Turn-off Voltage Threshold - 3.9 V - An input line fuse must always be used. Use a 1000uF AL-Cap on the input. A 30.1K resistor is connected from Enable to Vin Note: All specifications are typical at 25 °C unless otherwise stated. Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 • Tel 201-432-0463 • Fax 201-432-9542 • www.belfuse.com NON-ISOLATED DC/DC CONVERTERS 4.5 Vdc - 13.8 Vdc Input 0.591 Vdc - 5.1 Vdc/20 A Output Output Specifications Parameter Output Voltage Set Point Accuracy Min -1.5 % Vo Typ - Max +1.5 % Vo Load Regulation - - 1% Vo Line Regulation Regulation Over Temperature (0 °C to +70 °C) Output Current - - 0.5% Vo - - 1% Vo 0A - 20 A Current Limit Threshold - 150% Iomax - Output Ripple and Noise (pk-pk) - 40 mV 80 mV Output Ripple and Noise (rms) - 20 mV 40 mV 2 - 1A s 3A s Turn On Time - 2 mS 10 mS Output Capacitance Test conditions: 0-20MHz BW, with a 1µF ceramic capacitor and a 10uF Tantalum cap at output. 2 Short Circuit Surge Transient Overshoot at Turn on and off Notes Vin=12 V, Iout=half load - - 5% 0 uF - 1000 uF Transient Response 50% ~ 75% Max Load Settling Time VO=All 75% ~ 50% Max Load Settling Time - 200 mV 300 mV - - 50 uS - 200 mV 300 mV - - 50 uS Test conditions: di/dt = 2.5 A/uS; Vin =12 V; with 10 uF tantalum cap and 1 uF ceramic at the output, Ta=25 °C Note: All specifications are typical at 25 °C unless otherwise stated. General Specifications Parameter Min Typ Max - 94% 92% 90% 85% 70% - - 500 kHz - 0.591 V - 5.1 V - - 0.2 V Notes Efficiency Vo=5.0 V Vo=3.3 V Vo=2.5 V Vo=1.5 V Vo=0.591 V Switching Frequency Output Voltage Trim Range Remote Sense Compensation MTBF Measured at Vin=12 V, full load. Vin=12 V, Io=full load. Calculated Per Bell Core SR-332 (IO = 80%Iomax; Vin=12 V; Ta = 25 °C) TBD Dimensions Inches (L × W × H) Millimeters (L × W × H) Weight 1.45 x 0.61 x 0.40 36.83 x 15.49 x 10.15 - 9.7 g - Note: All specifications are typical at 25 °C unless otherwise stated. Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 • Tel 201-432-0463 • Fax 201-432-9542 • www.belfuse.com NON-ISOLATED DC/DC CONVERTERS 4.5 Vdc - 13.8 Vdc Input 0.591 Vdc - 5.1 Vdc/20 A Output Control Specifications Parameter Min Typ Max Notes Remote On/Off (Active High) Signal Low (Unit Off) -0.3 V - 0.4 V Signal High (Unit On) 2V - 5.5 V PwGood = High = Power Good 2.4 V - 6V - - 2 mA PwGood = Low = Power Not Good 0V - 0.35 V - - 5 mA Remote On/Off pin is open, unit is on. PwGood (PowerGood) Output Trim Equation The Rtrim resistor should be connected between the Trim pin and GND pin. Vout R trim 1 . 182 ⎡ = ⎢ ⎣ Vo − 0 . 591 ⎤ ⎥⎦ kΩ Sense Module trim Rtrim GND Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 • Tel 201-432-0463 • Fax 201-432-9542 • www.belfuse.com NON-ISOLATED DC/DC CONVERTERS 4.5 Vdc - 13.8 Vdc Input 0.591 Vdc - 5.1 Vdc/20 A Output Efficiency Data Module 5V 100.0% 98.0% efficiency 96.0% 94.0% 92.0% 7V 12V 14V 90.0% 88.0% 86.0% 84.0% 82.0% 80.0% 0.0 2.0 5.0 10.1 15.0 20.00 output current Module 2.5V 100.0% efficiency 95.0% 90.0% 4.5V 12V 14V 85.0% 80.0% 75.0% 70.0% 0.0 2.0 5.0 10.0 output current 15.0 20.0 efficiency Module 0.591V 90.0% 85.0% 80.0% 75.0% 70.0% 65.0% 60.0% 55.0% 50.0% 45.0% 40.0% 0.0 4.5V 12V 14V 2.0 5.0 10.0 15.0 20.0 output current Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 • Tel 201-432-0463 • Fax 201-432-9542 • www.belfuse.com NON-ISOLATED DC/DC CONVERTERS 4.5 Vdc - 13.8 Vdc Input 0.591 Vdc - 5.1 Vdc/20 A Output Thermal Derating Curves Vout=0.591V Vout=1.2 V Vout=2.5 V Vout=3.3 V Vout=5 V Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 • Tel 201-432-0463 • Fax 201-432-9542 • www.belfuse.com NON-ISOLATED DC/DC CONVERTERS 4.5 Vdc - 13.8 Vdc Input 0.591 Vdc - 5.1 Vdc/20 A Output Ripple and Noise Waveforms 12 Vdc input, 0.591 Vdc output 12 Vdc input, 2.5 Vdcoutput 12 Vdc input, 5 Vdc output Note: Ripple and noise at full load, 0-20 MHz BW, with a 10 uF tantalum cap and a 1 uF ceramic cap, and Ta=25 deg C. Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 • Tel 201-432-0463 • Fax 201-432-9542 • www.belfuse.com NON-ISOLATED DC/DC CONVERTERS 4.5 Vdc - 13.8 Vdc Input 0.591 Vdc - 5.1 Vdc/20 A Output Transient Response Waveforms Vout= 2.5 V 50%-75% Load Transients Vout= 5 V 50%-75% Load Transients Vout=2.5 V 75%-50% Load Transients Vout=5 V 75%-50% Load Transients Note: Transient response at di/dt = 2.5 A/uS, with 1 uF ceramic capacitor at the output, and Ta=25 deg C. Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 • Tel 201-432-0463 • Fax 201-432-9542 • www.belfuse.com NON-ISOLATED DC/DC CONVERTERS 4.5 Vdc - 13.8 Vdc Input 0.591 Vdc - 5.1 Vdc/20 A Output Mechanical Outline Pin Connections Pin 1 2 3 4 5 6 7 8 Function Vout Trim+ GND PwGOOD Enable Vin Sense+ Sense- RoHS Compliance Complies with the European Directive 2002/95/EC, calling for the elimination of lead and other hazardous substances from electronic products. ©2008 Bel Fuse Inc. Specifications subject to change without notice. 082108 CORPORATE FAR EAST EUROPE Bel Fuse Inc. 206 Van Vorst Street Jersey City, NJ 07302 Tel 201-432-0463 Fax 201-432-9542 www.belfuse.com Bel Fuse Ltd. 8F/ 8 Luk Hop Street San Po Kong Kowloon, Hong Kong Tel 852-2328-5515 Fax 852-2352-3706 www.belfuse.com Bel Fuse Europe Ltd. Preston Technology Management Centre Marsh Lane, Suite G7, Preston Lancashire, PR1 8UD, U.K. Tel 44-1772-556601 Fax 44-1772-888366 www.belfuse.com