XRAH-08E BEL | Alldatasheet
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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 - 14 Vdc Input 0.8 Vdc - 5.5 Vdc/8 A Output
- Non-Isolated • Remote On/Off
- Fixed Frequency • Under-voltage Lockout (UVLO)
- High Efficiency • OCP/SCP
- High Power Density
- Low Cost
- Wide Trim Range
- UL60950-1 Recognized (UL/cUL)
Description
The Bel xRAH-08Exxx modules are a series of non-isolated, step down dc/dc converters that operate from 4.5 Vdc to14 Vdc source. These converters are available in a range of output voltages from 0.8 Vdc to 5.5 Vdc. It is packaged in a compact, overmolded package rated at 8 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 for 5 Vdc output is typically 93% at full load. Part Selection Output Voltage Input Voltage Max. Output Current Max. Output Power Typical Efficiency Part Number Surface Mount Part Number Vertical Mount 0.8 V - 3.63 V 4.5 V - 14 V 8 A 26.4 W 91% SRAH-08E1A0 VRAH-08E1A0 4.5 V - 5.5 V 8 V - 14 V 8 A 44 W 93% SRAH-08E500 VRAH-08E500 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 Min Typ Max Notes Input Voltage (continuous) -0.3 V - 15 V Output Enable Terminal Voltage -0.3 V - 14 V Ambient Temperature -40 °C - 85 °C Storage Temperature -55 °C - 125 °C Input Specifications Parameter Min Typ Max Notes Input Voltage Vo=4.5 V-5.5 V Vo=0.9 V-3.63 V 8.0 V 4.5 V 14 V 14 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=0.9 V 5.4 A 6.7 A 5.3 A 3.2 A 3.0 A 2.8 A 2.0 A Input Current (no load) - - 100 mA Remote Off Input Current - 3 mA 10 mA Input Reflected Ripple Current (pk-pk) - 250 mA - Input Reflected Ripple Current (rms) - 70 mA - With simulated source impedance of 500 nH,
5 Hz to 20 MHz; use two 47 uF/16 V low ESR
Tantalum capacitors. xRAH-08E Series RoHS Compliant Rev.A
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 - 14 Vdc Input 0.8 Vdc - 5.5 Vdc/8 A Output Input Specifications (continued) Parameter Min Typ Max Notes I2t Inrush Current Transient - 0.006 A 2s0 . 0 2 A 2s - 4.3 V - xRAH-08E1A0 Turn-on Voltage Threshold - 7.6 V - xRAH-08E500 - 4.0 V - xRAH-08E1A0 Turn-off Voltage Threshold - 6.2 V - xRAH-08E500 Output Specifications Parameter Min Typ Max Notes Output Voltage Set Point 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=0.9 V 4.900 V 3.234 V 2.450 V 1.764 V 1.470 V 1.176 V 0.882 V 5.0 V 3.3 V 2.5 V 1.8 V 1.5 V 1.2 V 0.9 V 5.100 V 3.366 V 2.550 V 1.836 V 1.530 V 1.224 V 0.918 V Test condition: Vin=12 V, lout=50% full load Line Regulation 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=0.9 V ±15 mV ±10 mV ±8 mV ±5 mV ±5 mV ±4 mV ±4 mV ±25 mV ±16.5 mV ±12.6 mV ±9 mV ±9 mV ±8 mV ±8 mV Load Regulation 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=0.9 V ±15 mV ±10 mV ±8 mV ±5 mV ±5 mV ±4 mV ±4 mV ±25 mV ±16.5 mV ±12.5 mV ±9 mV ±9 mV ±8 mV ±8 mV Regulation Over Temperature (-40 °C to 85 °C) - 30 mV 50 mV Output Current 0 A - 8 A Current Limit Threshold 10 A - 20 A Short Circuit Surge Transient - 0.2 A 2s - Ripple and Noise (rms) Vo=5.0 V Vo=3.3 V-0.9 V 30 mV 15 mV 50 mV 30 mV Ripple and Noise (pk-pk) Vo=5.0 V Vo=3.3 V-0.9 V 100 mV 50 mV 150 mV 80 mV BW = 0-20 MHz; with a 1 uf ceramic capacitor and a 10 uF/10 V Tantalum capacitor at the output. Turn on Time - 8 mS 20 mS Overshoot at Turn on - 0% 3% Output Capacitance 0 uF - 3200 uF
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 - 14 Vdc Input 0.8 Vdc - 5.5 Vdc/8 A Output Output Specifications (continued) Parameter Min Typ Max Notes Transient Response Overshoot - 200 mV 300 mV 50% ~ 100% Max Load Settling Time - 50 uS 80 uS Overshoot - 200 mV 300 mV 100% ~ 50% Max Load Settling Time Vo=5.0 V - 50 uS 80 uS Overshoot - 120 mV 180 mV 50% ~ 100% Max Load Settling Time - 50 uS 80 uS Overshoot - 120 mV 180 mV 100% ~ 50% Max Load Settling Time Vo=3.3 V- 0.9 V - 50 uS 80 uS di/dt = 0.5 A/uS; Vin =
12 V; with a 1 uF ceramic
the output. Note: All specifications are typical at 12 V input, full load at 25 °C unless otherwise stated. General Specifications Parameter Min Typ 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 VO=0.9 V 89% 87% 86% 84% 82% 81% 76% 93% 91% 90% 88% 86% 85% 80% Measured at Vin=12 V, full load Switching Frequency - 330 kHz - 90%VO - 403%V O x7AH-08E1A0 1 Output Trim Range 90%VO - 110%V O x7AH-08E500 2 Remote Sense Compensation - - 0.2V MTBF 7,801,334 hours Calculated Per Bell Core SR-332 (IO = Nominal; Ta = 25 °C) Dimensions (surface mount) Inches (L × W × H) Millimeters (L × W × H) 0.78 x 0.7 x 0.32 19.81 x 17.78 x 8.13 Dimensions (vertical) Inches (L × W × H) Millimeters (L × W × H) 0.7 x 0.308 x 0.65 17.78 x 7.82 x 16.51 Weight - 6 g - Notes: All specifications are typical at 25 °C unless otherwise stated. 1. The output voltage is 0.9 V at trim pin is open. 2. The output voltage is 5.0 V at trim pin is open. Control Specifications Parameter Min Typ Max Notes Remote On/Off Signal Low (Unit Off) -0.3 V - 0.8 V Signal High (Unit On) 2.4 V - 14 V Remote on/off pin open, unit on.
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 - 14 Vdc Input 0.8 Vdc - 5.5 Vdc/8 A Output Output Trim Equations 1) xRAH-08E1A0 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. 631.5076.1 −−=− adjo downtrim VVR 261.0759.3 −−=− oadj uptrim VVR Note: Output voltage Vo=0.9 V when Rtrim_up is not connected. 2) xRAH-08E500 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. 631.5100.23 −−=− adjo downtrim VVR 261.0759.3 −−=− oadj uptrim VVR Note: Output voltage Vo=5 V when Rtrim_up is not connected. Vout Trim GND Rtrim-down Module Vout Tr im GND Rtrim-up Module Vout Trim GND Rtrim-down Module Vout Tr im GND Rtrim-up Module
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 - 14 Vdc Input 0.8 Vdc - 5.5 Vdc/8 A Output Efficiency Data Efficiency Curve 75.0% 80.0% 85.0% 90.0% 95.0% 100.0% 0.8 2 4 6 8 Output Current (A) Efficiency 8.0 V 12.0 V 14.0 V Vo=5.0 V Efficiency Curve 75.0% 80.0% 85.0% 90.0% 95.0% 100.0% 0 . 8 2468 Output Current (A) Efficiency 4.5 V 8.0 V 12.0 V 14.0 V Vo=3.3 V Efficiency Curve 65.0% 70.0% 75.0% 80.0% 85.0% 90.0% 95.0% 100.0% 0 . 8 2468 Output Current (A) Efficiency 4.5 V 8.0 V 12.0 V 14.0 V Vo=2.5 V Efficiency Curve 65.0% 70.0% 75.0% 80.0% 85.0% 90.0% 95.0% 100.0% 0.8 2 4 6 8 Output Current (A) Efficiency 4.5 V 8.0 V 12.0 V 14.0 V Vo=1.8 V Efficiency Curve 65.0% 70.0% 75.0% 80.0% 85.0% 90.0% 95.0% 0.8 2 4 6 8 Output Current (A) Efficiency 4.5 V 8.0 V 12.0 V 14.0 V Vo=1.5 V Efficiency Curve 65.0% 70.0% 75.0% 80.0% 85.0% 90.0% 95.0% 0 . 8 2468 Output Current (A) Efficiency 4.5 V 8.0 V 12.0 V 14.0 V Vo=1.2 V Efficiency Curve 60.0% 65.0% 70.0% 75.0% 80.0% 85.0% 90.0% 95.0% 0 . 8 2468 Output Current (A) Efficiency 4.5 V 8.0 V 12.0 V 14.0 V Vo=0.9 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 - 14 Vdc Input 0.8 Vdc - 5.5 Vdc/8 A Output Thermal Derating Curves VRAH-08E1A0 SRAH-08E1A0 VRAH-08E500 SRAH-08E500
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 - 14 Vdc Input 0.8 Vdc - 5.5 Vdc/8 A Output Ripple and Noise Waveforms 12 Vdc Input, 0.9 Vdc Output 12 Vdc Input 1.2 Vdc Output 12 Vdc Input, 1.5 Vdc Output 12 Vdc Input 1.8 Vdc Output 12 Vdc Input, 2.5 Vdc Output 12 Vdc Input 3.3 Vdc Output
12 Vdc Input, 5 Vdc Output
Note: Ripple and noise at full load, with a 1uF ceramic cap and a 10uF tan cap, 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 - 14 Vdc Input 0.8 Vdc - 5.5 Vdc/8 A Output Transient Response Waveforms 50% to 100% load 12 Vdc Input 0.9 Vdc Output 100% to 50% load 12 Vdc Input 0.9 Vdc Output 50% to 100% load 12 Vdc Input 1.2 Vdc Output 100% to 50% load 12 Vdc Input 1.2 Vdc Output 50% to 100% load 12 Vdc Input 1.5 Vdc Output 100% to 50% load 12 Vdc Input 1.5 Vdc Output 50% to 100% load 12 Vdc Input 1.8 Vdc Output 100% to 50% load 12 Vdc Input 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 4.5 Vdc - 14 Vdc Input 0.8 Vdc - 5.5 Vdc/8 A Output Transient Response Waveforms (continued) 50% to 100% load 12 Vdc Input 2.5 Vdc Output 100% to 50% load 12 Vdc Input 2.5 Vdc Output 50% to 100% load 12 Vdc Input 3.3 Vdc Output 100% to 50% load 12 Vdc Input 3.3 Vdc Output 50% to 100% load 12 Vdc Input 5 Vdc Output 100% to 50% load 12 Vdc Input 5 Vdc Output Note: Transient response at di/dt=0.5 A/uS, with a 1uF ceramic cap and a 10 uF/10 V tan cap at the output, Ta=25 deg C.
©2007 Bel Fuse Inc. Specifications subject to change without notice. 010507 CORPORATE FAR EAST EUROPE Bel Fuse Inc. Bel Fuse Ltd. Bel Fuse Europe Ltd.
206 Van Vorst Street 8F/ 8 Luk Hop Street Preston Technology Management Centre
Jersey City, NJ 07302 San Po Kong Marsh Lane, Suite G7, Preston Tel 201-432-0463 Kowloon, Hong Kong Lancashire, PR1 8UD, U.K. Fax 201-432-9542 Tel 852-2328-5515 Tel 44-1772-556601 www.belfuse.com Fax 852-2352-3706 Fax 44-1772-888366 www.belfuse.com www.belfuse.com NON-ISOLATED DC/DC CONVERTERS 4.5 Vdc - 14 Vdc Input 0.8 Vdc - 5.5 Vdc/8 A Output Mechanical Outline SRAH-08Exxx VRAH-08Exxx 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. bel Pin Connections Pin Function