NON-ISOLATED DC/DC CONVERTERS 5.4 Vdc - 13.2 Vdc Input 1.0 Vdc - 5.0 Vdc Output / 20 A SRDB-20ExxH Series RoHS Compliant Rev.A • Non-Isolated • Wide Input • OCP/SCP/OVP • Remote Sense • Low Profile Package • • Remote On/Off (Active High) Under-Voltage Lockout (UVLO) Description The Bel SRDB-20ExxH is part of the non-isolated dc/dc converter Power Module series. The modules use a DIP package for ease of layout and space savings. The output is closely regulated and the efficiency of 5 Vdc output module is typically 94% at full load. Part Selection Output Voltage 5.0 V 3.3 V 2.5 V 1.8 V 1.5 V 1.2 V 1.0 V Input Voltage 8.0 V - 13.2 V 5.8 V - 13.2 V 5.4 V - 13.2 V 5.4 V - 13.2 V 5.4 V - 13.2 V 5.4 V - 13.2 V 5.4 V - 13.2 V Max. Output Current 20 A 20 A 20 A 20 A 20 A 20 A 20 A Max. Output Power 100 W 66 W 50 W 36 W 30 W 24 W 20 W Typical Efficiency 94% 92% 91% 88% 87% 85% 84% Model Number SRDB-20E50H SRDB-20E33H SRDB-20E25H SRDB-20E18H SRDB-20E15H SRDB-20E12H SRDB-20E10H Notes: 1. Add “R” suffix at the end of the model number to indicate “Reel Packaging”, and “G” for “Tray Packaging”. 2. All part numbers above indicate RoHS 6. Change the second letter "R" to "7" for RoHS 5 part numbers. Absolute Maximum Ratings Parameter Input Voltage (continuous) Min -0.3 V Typ - Max 16 V Output Enable Terminal Voltage -0.3 V - 16 V Ambient Temperature -40 °C - 85 °C Storage Temperature -40 °C - 125 °C Min Typ Max 8V 5.8 V 5.4 V - 13.2 V 13.2 V 13.2 V - - 15.1 A 14.1 A 13.3 A 10.4 A 8.4 A 6.9 A 5.9 A Notes Input Specifications Parameter Input Voltage Vo=5.0 V Vo=3.3 V Vo=1.0-2.5 V Input Current (full load) VO=5.0 V VO=3.3 V VO=2.5 V VO=1.8 V VO=1.5 V VO=1.2 V VO=1.0 V Notes 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 5.4 Vdc - 13.2 Vdc Input 1.0 Vdc - 5.0 Vdc Output / 20 A Input Specifications (continued) Parameter Input Current (no load) Min Typ Max - 200 mA 150 mA 135 mA 120 mA 100 mA 85 mA 80 mA - Input Reflected Ripple Current (pk-pk) - 130 mA 200 mA Input Reflected Ripple Current (rms) - 40 mA 70 mA I t Inrush Current Transient - 0.1 A s 0.2 A s Turn-on Voltage Threshold Turn-off Voltage Threshold 4.35 V 3.65 V 4.48 V 3.98 V 4.60 V 4.30 V VO=5.0 V VO=3.3 V VO=2.5 V VO=1.8 V VO=1.5 V VO=1.2 V VO=1.0 V 2 2 Notes With simulated impedance of 500 nH, 5 Hz to 20 MHz; use two 270 uF/16 V capacitors with ESR=0.018ohm max, at 100 kHz 2 Note: All specifications are typical at Vin=8 V, full load at 25 °C unless otherwise stated. Output Specifications Parameter Output Voltage Set Point Min Typ Max VO=5.0 V VO=3.3 V VO=2.5 V VO=1.8 V VO=1.5 V VO=1.2 V VO=1.0 V 4.900 V 3.234 V 2.450 V 1.764 V 1.470 V 1.176 V 0.980 V 5.0 V 3.3 V 2.5 V 1.8 V 1.5 V 1.2 V 1.0 V 5.100 V 3.366 V 2.550 V 1.836 V 1.530 V 1.224 V 1.020 V VO=5.0 V VO=3.3 V VO=2.5 V VO=1.8 V VO=1.5 V VO=1.2 V VO=1.0 V - ±2 mV ±1 mV ±1 mV ±1 mV ±1 mV ±1 mV ±1 mV ±4 mV ±3 mV ±3 mV ±3 mV ±3 mV ±3 mV ±3 mV VO=5.0 V VO=3.3 V VO=2.5 V VO=1.8 V VO=1.5 V VO=1.2 V VO=1.0 V - ±3 mV ±2 mV ±2 mV ±2 mV ±1 mV ±1 mV ±1 mV ±7 mV ±4 mV ±4 mV ±4 mV ±3 mV ±3 mV ±3 mV Regulation Over Temperature (-40 °C to +85 °C) VO=5.0 V VO=3.3 V VO=2.5 V VO=1.8 V VO=1.5 V VO=1.2 V VO=1.0 V - ±15 mV ±10 mV ±9 mV ±8 mV ±7 mV ±5 mV ±5 mV ±30 mV ±20 mV ±18 mV ±16 mV ±14 mV ±10 mV ±10 mV Line Regulation Load Regulation Notes Test conditions: Vin=8 V; Iout=half load 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 5.4 Vdc - 13.2 Vdc Input 1.0 Vdc - 5.0 Vdc Output / 20 A Output Specifications (continued) Parameter Output Current Min 0A Typ - Current Limit Threshold 24 A - Short Circuit Surge Transient Max 20 A 40 A 2 2 - 0.075 A s 0.15 A s 1 - 20 mV 40 mV 1 - 10 mV 20 mV 1 60 mV 100 mV 1 30 mV 60 mV Ripple and Noise (rms) Ripple and Noise (rms) Ripple and Noise (pk-pk) Ripple and Noise (pk-pk) Turn on Time - 20 mS 40 mS Overshoot at Turn on - 0% 3% 680 uF - 8000 uF Output Capacitance Notes With 1 uF ceramic capacitor at the output With 680 uF tantalum capacitor at the output With 1 uF ceramic capacitor at the output With 680 uF tantalum capacitor at the output Transient Response 50% ~ 100% Max Load Settling Time 100% ~ 50% Max Load VO=5 V Settling Time 50% ~ 100% Max Load Settling Time 100% ~ 50% Max Load VO=1.8 V3.3 V Settling Time 50% ~ 100% Max Load Settling Time 100% ~ 50% Max Load VO=1.5 V Settling Time 50% ~ 100% Max Load Settling Time 100% ~ 50% Max Load VO=1.2 V Settling Time 50% ~ 100% Max Load Settling Time 100% ~ 50% Max Load Settling Time VO=1.0 V - 120 mV 200 mV - 50 uS 100 uS - 120 mV 200 mV - 50 uS 100 uS 100 mV 150 mV - 50 uS 100 uS - 100 mV 150 mV - 50 uS 100 uS - 100 mV 150 mV - 40 uS 80 uS - 100 mV 150 mV - 40 uS 80 uS - 100 mV 150 mV - 40 uS 80 uS - 100 mV 150 mV - 50 uS 100 uS - 90 mV 130 mV - 40uS 80 uS - 90 mV 130 mV - 40 uS 80 uS Test conditions: di/dt = 0.5 A/uS; Vin=8 V; with external 680 uF tantalum capacitor. Notes: All specifications are typical at full load at 25 °C u nless otherwise stated. 1. Test conditions of the output ripple and noise: two 270 uF/16 V capacitors with ESR=0.018 ohm max at the input; Vin=8 V, Io=20 A; 0-20 MHz BW. 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 5.4 Vdc - 13.2 Vdc Input 1.0 Vdc - 5.0 Vdc Output / 20 A General Specifications Parameter Min Typ Max Notes 91% 89% 88% 85% 84% 82% 81% 480 kHz 94% 92% 91% 88% 87% 85% 84% 600 kHz 720 kHz Over Voltage Protection (Latch) 108.5% 115% 120% Output Trim Range Remote Sense Compensation 90%VO - 110%VO 10% Efficiency VO=5.0 V VO=3.3 V VO=2.5 V VO=1.8 V VO=1.5 V VO=1.2 V VO=1.0 V Switching Frequency MTBF Measured at Vin=8 V at full load. Can be reset by cycling the input supply voltage or remote on/off. Calculated Per Bell Core SR-332 (IO = 16 A, Vin=8 V, Vo=3.3 V; Ta = 25 °C) 3,154,461 hours Dimensions Inches (L × W × H) Millimeters (L × W × H) Weight 1.22 x 0.827 x 0.345 30.99 x 21.0 x 8.76 11 g - - Note: All specifications are typical at 25 °C unless otherwise stated. Control Specifications Parameter Remote On/Off Signal Low (Unit Off) Signal High (Unit On) Min Typ Max 0V 2.5 V - 1V 13.2 V Notes Remote on/off pin open, unit on. Output Trim Equations Equations for calculating the trim resistor (in kΩ) given the desired adjusted voltage (Vadj) and the nominal output voltage of the converter (Vnom) are shown below. The Trim Down resistor should be connected between the Trim pin and Vout. The Trim Up resistor should be connected between the Trim pin and Ground. Only one of the resistors should be used for any given application. Vout A Rtrim _ down = ( − B) K Vnom − Vadj Rtrimdown Module Trim GND Rtrim_ up = ( C − D) Vadj − Vnom Vout Module Vnom 5.0V 3.3V 2.5V 1.8V 1.5V 1.2V 1.0V A 30.955 3.961 1.834 1.927 1.353 0.099 0.102 B 15.805 3.407 3.397 6.916 5.851 0.446 0.684 C 5.884 1.266 0.861 1.533 1.533 0.196 0.401 D 8.450 1.825 2.320 5.000 3.935 0.201 0.183 Trim Rtrimup 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 5.4 Vdc - 13.2 Vdc Input 1.0 Vdc - 5.0 Vdc Output / 20 A Efficiency Data Efficiency Curve Efficiency Curve 100.0% 100.0% 96.0% 92.0% 92.0% 8.0 V 10.8 V 13.2 V 88.0% 84.0% Efficiency Efficiency 96.0% 80.0% 5.8 V 8.0 V 13.2 V 88.0% 84.0% 80.0% 76.0% 76.0% 72.0% 72.0% 68.0% 2 4 6 8 10 12 14 16 18 20 2 4 6 Output Current (A) 8 10 12 14 16 18 20 Output Current (A) Vo=5.5 V Vo=3.3 V Efficiency Curve Efficiency Curve 98.0% 92.0% 94.0% 88.0% 5.4 V 8.0 V 13.2 V 86.0% 82.0% Efficiency Efficiency 90.0% 5.4 V 8.0 V 13.2 V 84.0% 80.0% 78.0% 76.0% 74.0% 72.0% 68.0% 70.0% 2 4 6 8 10 12 14 16 18 2 20 4 6 Output Current (A) 8 10 12 14 16 18 20 Output Current (A) Vo=2.5 V Vo=1.8 V Efficiency Curve Efficiency Curve 94.0% 92.0% 90.0% 88.0% 5.4 V 8.0 V 13.2 V 82.0% 78.0% 5.4 V 8.0 V 13.2 V 84.0% Efficiency Efficiency 86.0% 74.0% 80.0% 76.0% 72.0% 70.0% 68.0% 66.0% 2 4 6 8 10 12 14 16 18 64.0% 20 2 4 Output Current (A) 6 8 10 12 14 16 18 20 Output Current (A) Vo=1.5V Vo=1.2 V Efficiency Curve 92.0% 88.0% Efficiency 84.0% 5.4 V 8.0 V 13.2 V 80.0% 76.0% 72.0% 68.0% 64.0% 60.0% 2 4 6 8 10 12 14 16 18 20 Output Current (A) Vo=1.0 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 5.4 Vdc - 13.2 Vdc Input 1.0 Vdc - 5.0 Vdc Output / 20 A Thermal Derating Curves SRDB-20E10H (Vin=8 V) SRDB-20E12H (Vin=8 V) SRDB-20E15H (Vin=8 V) SRDB-20E18H (Vin=8 V) SRDB-20E25H (Vin=8 V) SRDB-20E33H (Vin=8 V) SRDB-20E50H (Vin=8 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 5.4 Vdc - 13.2 Vdc Input 1.0 Vdc - 5.0 Vdc Output / 20 A Ripple and Noise Waveforms Ripple and noise at max load 5 Vdc output Ripple and noise at max load 3.3 Vdc output Ripple and noise at max load 2.5 Vdc output Ripple and noise at max load 1.8 Vdc output Ripple and noise at max load 1.5 Vdc output Ripple and noise at max load 1.2 Vdc output . 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 5.4 Vdc - 13.2 Vdc Input 1.0 Vdc - 5.0 Vdc Output / 20 A Ripple and Noise Waveforms (continued) Ripple and noise at max load 1.0 Vdc output Note: Ripple and Noise at 8 V input, with 680 uF tantalum capacitor at the output, and Ta=25 deg C. Transient Response Waveforms Transients 50% to 100% load 5 Vdc output Transients 100% to 50% load 5 Vdc output 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 5.4 Vdc - 13.2 Vdc Input 1.0 Vdc - 5.0 Vdc Output / 20 A Transient Response Waveforms (continued) Transients 50% to 100% load 3.3 Vdc output Transients 100% to 50% load 3.3 Vdc output Transients 50% to 100% load 2.5 Vdc output Transients 100% to 50% load 2.5 Vdc output Transients 50% to 100% load 1.8 Vdc output Transients 100% to 50% load 1.8 Vdc output 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 5.4 Vdc - 13.2 Vdc Input 1.0 Vdc - 5.0 Vdc Output / 20 A Transient Response Waveforms (continued) Transients 50% to 100% load 1.5 Vdc output Transients 100% to 50% load 1.5 Vdc output Transients 50% to 100% load 1.2 Vdc output Transients 100% to 50% load 1.2 Vdc output Transients 50% to 100% load 1.0 Vdc output Transients 100% to 50% load 1.0 Vdc output Note: Transient response at 8 V input, di/dt=0.5 A/uS, with external 680 uF tantalum capacitor, 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 5.4 Vdc - 13.2 Vdc Input 1.0 Vdc - 5.0 Vdc Output / 20 A Mechanical Outline Pin Connections Pin 1 2 3 4 5 6 7 8 9 10 11 12 Function Vo Vo Ground Ground Ground Vin Vin Ground Ground Remote On/Off Trim Remote Sense (+) Note: Though there are 5 GND pins (3,4,5,8,9), it is highly recommended that all of them should be used in the system application, because of the current and the thermal conduction. RoHS Compliance Complies with the European Directive 2002/95/EC, calling for the elimination of lead and other hazardous substances from electronic products. These parts are not however compatible with the higher temperatures associated with lead free solder processes and must be soldered using a reflow profile with a peak temperature of no more than 240ºC. ©2007 Bel Fuse Inc. Specifications subject to change without notice. 031907 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