NON-ISOLATED DC/DC CONVERTERS 4.5 Vdc - 32 Vdc Input 1.2 Vdc - 5.0 Vdc/3 A Output xRAH-03Hxx0 Series • • • • • RoHS Compliant Non-Isolated High Efficiency High Power Density Excellent Thermal Performance UL60950-1 Recognized (UL/cUL) • • • • Rev.B Remote On/Off Input Under Voltage Lockout OCP/SCP Low Cost Description The Bel xRAH-03Hxx0 is part of the low cost non-isolated dc/dc power converter series. It is packaged in a compact, overmolded package rated at 3 A. Optional lead forming provides a vertical mount product for minimal footprint or a surface mount option for a very low profile. The output is closely regulated and the efficiency of 3.3 Vdc output is typically 90% at full load. Typical features include remote on/off, input under voltage lockout, over current protection and short circuit protection. Part Selection Output Voltage 5.0 V 3.3 V 2.5 V 1.8 V 1.5 V 1.2 V Input Voltage 8.0 V - 32 V 4.9 V - 32 V 4.5 V - 32 V 4.5 V - 32 V 4.5 V - 32 V 4.5 V - 32 V Max. Output Current 3A 3A 3A 3A 3A 3A Max. Output Power 15 W 10 W 7.5 W 5.4 W 4.5 W 3.6 W Typical Efficiency 92% 90% 88% 85% 83% 81% Part Number Surface Mount SRAH-03H500 SRAH-03H330 SRAH-03H250 SRAH-03H180 SRAH-03H150 SRAH-03H120 Part Number Vertical Mount VRAH-03H500 VRAH-03H330 VRAH-03H250 VRAH-03H180 VRAH-03H150 VRAH-03H120 Notes: 1. Add “0” suffix at the end of the model number to indicate “Tube Packaging”, and “R” for “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) Output Enable Terminal Voltage Ambient Temperature Storage Temperature Min -0.3 V -0.3 V -40 °C -40 °C Typ - Max 34 V 12 V 85 °C 125 °C Notes Input Specifications Parameter Input Voltage Input Current (no load) Input Current (full load) Remote Off Input Current Input Reflected Ripple Current (pk-pk) Input Reflected Ripple Current (rms) 2 I t Inrush Current Transient 1 Turn on Voltage Threshold 2 Turn off Voltage Threshold Min 4.5 V - Typ 30 mA 4 mA Max 32 V 3A - - 200 mA 400 mA - 100 mA 150 mA 2 Notes See “Part Selection” for more details. Tested with simulated source impedance of 500 nH, 5 Hz to 20 MHz and two 100 uF/50 V electrolytic capacitors and a 3.3 uF/50 V ceramic capacitor at the input. 2 - 0.02 A s 0.1 A s - 4.1 V 3.3 V 4.5 V 4.0 V Notes: 1. The max Turn on Voltage threshold of the 3.3 V & 5.0 V output module will be relaxed to 4.9 V & 8.0 V respectively. 2. The max Turn off Voltage threshold of the 3.3 V output module will be relaxed to 4.5 V. The 5.0 V output module does not have such function. 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 - 32 Vdc Input 1.2 Vdc - 5.0 Vdc/3 A Output Output Specifications Parameter Output Voltage Set Point Min Typ Max 4.900 V 3.234 V 2.450 V 1.764 V 1.470 V 1.176 V 5.0 V 3.3 V 2.5 V 1.8 V 1.5 V 1.2 V 5.100 V 3.366 V 2.550 V 1.836 V 1.530 V 1.224 V VO=5.0 V VO=1.2 V-3.3 V - ±10 mV ±5 mV ±15 mV ±10 mV VO=5.0 V VO=1.2 V-3.3 V - ±10 mV ±5 mV ±15 mV ±10 mV - 30 mV 50 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 Line Regulation Load Regulation Regulation Over Temperature (-40 °C to +85 °C) Output Current 0A - 3A 3.3 A - 9A VO=1.2 V-5.0 V - 0.02 A s 2 0.1 A s VO=1.2 V-5.0 V - 25 mV 50 mV VO=1.2 V-5.0 V - 60 mV 100 mV Turn on Time - 15 mS 50 mS Overshoot at Turn on - 2% 5% 220 uF - 1200uF Current Limit Threshold Short Circuit Surge Transient Test conditions: Vin=12 V, Io=50% full load 2 Ripple and Noise (rms) Ripple and Noise (pk-pk) Output Capacitance Notes Tested with 0-20 MHz BW, with a 220 uF tantalum capacitor at the output. Transient Response 50% ~ 100% Max Load Overshoot - 150 mV 200 mV Settling Time - 100 uS 150 uS 100% ~ 50% Max Load - 150 mV 200 mV Settling Time - 100 uS 150 uS Overshoot - 130 mV 180 mV Settling Time - 100 uS 150 uS - 130 mV 180 mV Settling Time - 100 uS 150 uS Overshoot - 100 mV 150 mV - 50 uS 100 uS - 100 mV 150 mV Settling Time - 50 uS 100 uS Overshoot - 90 mV 140 mV 50% ~ 100% Max Load 100% ~ 50% Max Load 50% ~ 100% Max Load 100% ~ 50% Max Load 50% ~ 100% Max Load 100% ~ 50% Max Load Overshoot Overshoot Settling Time Overshoot Settling Time Overshoot Settling Time VO=5.0 V VO=3.3 V VO=1.8 V - 2.5 V VO=1.2 V -1.5 V - 40 uS 80 uS - 90 mV 140 mV - 40 uS 80 uS Test conditions: di/dt = 0.5 A/uS; Vin = 12 V; with a 220 uF Tantalum capacitor at the output. Note: All specifications are typical at nominal input, full load 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 - 32 Vdc Input 1.2 Vdc - 5.0 Vdc/3 A Output General Specifications Parameter Min Typ 89% 87% 85% 82% 80% 78% 200 kHz 90%Vo 92% 90% 88% 85% 83% 81% 300 kHz - Max Notes 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 Switching Frequency Output Trim Range (narrow trim) - Measured at Vin=12 V, full load and Ta=25 °C 400 kHz 110%Vo Calculated Per Bell Core SR-332 (IO = Nominal; Ta = 25 °C) 8,120,000 hours MTBF Dimensions (surface mount) Inches (L × W × H) Millimeters (L × W × H) Dimensions (vertical) Inches (L × W × H) Millimeters (L × W × H) Weight 0.78 x 0.70 x 0.32 19.81 x 17.78 x 8.13 - 0.70 x 0.308 x 0.65 17.78 x 7.82 x 16.51 5.1 g - Control Specifications Parameter Remote On/Off Signal Low (Unit On) Signal High (Unit Off) Min Typ Max -0.3 V 2.8 V - 1V 12 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 Rtrimdown Rtrimup = Rtrim-down A = −B Vnom − Vadj Vadj Module Trim GND Vout C −D − Vnom Module Trim Rtrim-up GND Vnom 5.0 3.3 2.5 1.8 1.5 1.2 A 61.850 53.840 9.556 3.849 3.102 1.794 B 29.400 61.700 15.620 13.830 14.420 10.910 C 11.760 17.200 4.496 3.064 3.536 3.536 D 14.700 40.200 10.000 10.000 10.000 6.490 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 - 32 Vdc Input 1.2 Vdc - 5.0 Vdc/3 A Output Efficiency Data Efficiency Curve Efficiency Curve 100.0% 90.0% 90.0% Efficiency 80.0% 8V 12 V 24 V 32 V 70.0% 60.0% 50.0% Efficiency 100.0% 80.0% 4.9 V 12 V 24 V 32 V 70.0% 60.0% 50.0% 40.0% 40.0% 30.0% 30.0% 0.3 0.8 1.5 2.3 3.0 0.3 Output Current (A) 0.8 Vo=5.0 V 3.0 Efficiency Curve 100.0% 100.0% 90.0% 90.0% 80.0% 4.5 V 12 V 24 V 32 V 70.0% 60.0% 50.0% Efficiency Efficiency 2.3 Vo=3.3 V Efficiency Curve 80.0% 4.5 V 12 V 24 V 32 V 70.0% 60.0% 50.0% 40.0% 40.0% 30.0% 0.3 0.8 1.5 2.3 30.0% 3.0 0.3 Output Current (A) 0.8 1.5 2.3 3.0 Output Current (A) Vo=2.5 V Vo=1.8 V Efficiency Curve Efficiency Curve 100.0% 100.0% 90.0% 90.0% 80.0% 4.5 V 12 V 24 V 32 V 70.0% 60.0% 50.0% 40.0% 80.0% Efficiency Efficiency 1.5 Output Current (A) 4.5 V 12 V 24 V 32 V 70.0% 60.0% 50.0% 40.0% 30.0% 30.0% 0.3 0.8 1.5 2.3 3.0 0.3 0.8 1.5 2.3 Output Current (A) Output Current (A) Vo=1.5 V Vo=1.2 V 3.0 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 - 32 Vdc Input 1.2 Vdc - 5.0 Vdc/3 A Output Thermal Derating Curve 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 - 32 Vdc Input 1.2 Vdc - 5.0 Vdc/3 A Output Ripple and Noise Waveforms Ripple and noise at max load 5.0 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 Note: Ripple and Noise at 12 Vdc input, 0-20 MHz BW, with a 220 uF tantalum cap at the output, 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 - 32 Vdc Input 1.2 Vdc - 5.0 Vdc/3 A Output Transient Response Waveforms Transients 50% to 100% load 5 Vdc output Transients 100% to 50% load 5 Vdc output 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 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 - 32 Vdc Input 1.2 Vdc - 5.0 Vdc/3 A Output Transient Response Waveforms (continued) Transients 50% to 100% load 1.8 Vdc output Transients 100% to 50% load 1.8 Vdc output 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 Note: Transient Response at 12 V input, di/dt=0.5 A/uS, with 220 uF tantalum cap at the output, 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 - 32 Vdc Input 1.2 Vdc - 5.0 Vdc/3 A Output Mechanical Outline SRAH-03Hxx0 Pin Connections bel VRAH-03Hxx0 Pin 1 2 3 4 5 6 7 Function Remote On/Off (option) Vin Ground Vout Trim (option) N/A N/A Pin Connections bel bel Pin Function 1 Remote On/Off (option) 2 Vin 3 Ground 4 Vout 5 Trim (option) 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 240 ºC. ©2008 Bel Fuse Inc. Specifications subject to change without notice. 010308 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