NON-ISOLATED DC/DC CONVERTERS 8.3 Vdc - 14 Vdc Input 0.75 Vdc - 5.0 Vdc/6 A Output SRBA-06A1Ax RoHS Compliant Rev.A • Non-Isolated • Under-Voltage Lockout (UVLO) • High Efficiency • OCP/SCP • High Power Density • Wide Input Range • Fixed Frequency • Wide Output Trim Range • Remote On/Off • Active Low/High Description The Bel SRBA-06A1Ax modules are a series of non-isolated dc/dc converters that deliver up to 6 A of output current with full load efficiency of 92% at 5.0 Vdc output. These modules pro Vide precisely regulated Voltage programmable via external resistor from 0.75 Vdc to 5.0 Vdc over a wide range of input voltage (8.3 Vdc - 14 Vdc). The open-frame construction and small footprint enable designers to develop cost and space-efficient solutions. Standard features include remote On/Off, over current protection, short current protection, wide input, and programmable output voltage. Part Selection Output Voltage 0.75 V - 5.0 V Input Voltage 8.3 V - 14 V Max. Output Current 6A Max. Output Power 30.0 W Typical Efficiency 92% Model Number Active Low SRBA-06A1AL Model Number Active High SRBA-06A1A0 Notes: 1.Add “G” suffix at the end of the model number to indicate 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 -55 °C Typ - Max 15 V 15 V 85 °C 125 °C Notes Input Specifications Parameter Input Voltage Input Current (full load) Min 8.3 V Typ 12 V Max 14 V Vo=5.0 V Vo=3.3 V Vo=2.5 V Vo=1.8 V Vo=1.2 V Vo=0.75 V - 2.75 A 1.85 A 1.45 A 1.05 A 0.75 A 0.55 A 4.0 A 2.8 A 2.2 A 1.6 A 1.1 A 0.8 A Vo=5.0 V Vo=0.75 V Remote Off Input Current Input Reflected Ripple Current (pk-pk) - 1 mA 120 mA 100 mA 20 mA 2 mA - Input Reflected Ripple Current (rms) - 40 mA - 0.002 A s 8.1 V 7.5 V Notes Input Current (no load) 2 I t Inrush Current Transient Turn-on Voltage Threshold Turn-off Voltage Threshold 2 - Tested with two 100 uF/25 V tantalum input capacitors & simulated source impedance of 1 uH, 5 Hz to 20 MHz. 2 0.02 A s 8.2 V 8.0 V Note: All specifications are typical at 25 °C unless other Wise 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 8.3 Vdc - 14 Vdc Input 0.75 Vdc - 5.0 Vdc/6 A Output Output Specifications Parameter Output Voltage Set Point Min -2% Vo,set Typ - Max 2% Vo,set Output Voltage Set Point -2.5% Vo,set - 3.5% Vo,set 0.7525 V - 5.0 V - 0.4% Vo,set 0.3% Vo,set - Io=Iomin to Iomax Vin= Vinmin to Vinmax - 0.5% Vo,set - Tref=Tamin to Tamax 0A 7.2A - 6A 18A - 0.25A s - - 50 mV 75 mV - 15 mV 30 mV - 75 mV 100 mV - 30 mV 8 mS 0% 40 mV 10 mS 3% 0 uF 0 uF - 1000 uF 3300 uF Adjustment Range Selected by External Resistor or Voltage Load Regulation Line Regulation Regulation Over Temperature (-40 °C to +8 °C) Output Current Current Limit Threshold Short Circuit Surge Transient Ripple and Noise (pk-pk) Vo=0.75 V-3.63 V Ripple and Noise (rms) Vo=0.75 V-3.63 V Ripple and Noise (pk-pk) Vo=5.0 V Ripple and Noise (rms) Vo=5.0 V Turn on Time Overshoot at Turn on Output Capacitance ESR ≥ 1 mohm ESR ≥ 10 mohm Transient Response 50% ~ 100% Max Load Settling Time VO = 0.75 V -5 V 100% ~ 50% Max Load Settling Time 2 - 200 m V 50 uS 200 m V 50 uS - Notes Vin=12 V, full load Over all operating input voltages, resistive loads and temperature conditions Tested with 0-20MHz, with 10 uF/10 V tantalum capacitor & 1 uF/10 V TDK ceramic capacitor at the output. di/dt=2.5 A/uS; Vin=12 V; and With 10 uF/10 V tantalum capacitor & 1 uF/10 V ceramic capacitor at the output. Note: All specifications are typical at nominal input, full load at 25 °C unless other wise stated. General Specifications Parameter Min Typ Max 90% 87% 85% 83% 79% 71% 250 kHz 0.7525 V 92% 89% 88% 86% 82% 74% 300 kHz 135 °C - 350 kHz 5V Notes Efficiency Vo=5.0 V Vo=3.3 V Vo=2.5 V Vo=1.8 V Vo=1.2 V Vo=0.75 V Switching Frequency Over Temperature Shutdown Output Trim Range (Wide trim) MTBF Measured at Vin=12 V, full load Calculated Per Bell Core SR-332 (IO = Nominal; Ta = 25 °C) 3,079,469 hours Dimensions Inches (L × W × H) Millimeters (L × W × H) Weight - 0.8 x 0.45 x 0.251 20.32 x 11.42 x 6.38 3g - Note: All specifications are typical at 25 °C unless other wise 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 8.3 Vdc - 14 Vdc Input 0.75 Vdc - 5.0 Vdc/6 A Output Control Specifications Parameter Remote On/Off Min Typ Max Signal Low (Unit Off) -0.3 V - 0.4 V Signal High (Unit On) 2.5 V - 14 V Signal Low (Unit On) -0.3 V - 0.4 V Signal High (Unit Off) 2.5 V - 14 V Notes SRBA-06A1A0; Remote On/Off pin open, Unit on. SRBA-06A1AL; Remote On/Off pin open, Unit on. Remote Enable Specifications The SRBA-06A1AL modules feature an enable pin with negative logic. If not using the enable pin, leave the pin open (the module will be on). During logic_high, the module is turned off, during logic_low, the module is turned on. It inner circuit impedance is showed as figure. SRBA-06A1AL The SRBA-06A1A0 modules feature an enable pin with Positive logic. If not using the enable pin, leave the pin open (the module will be on). During logic_high, the module is turned on, during logic_low, the module is turned off. It inner circuit impedance is showed as figure. SRBA-06A1A0 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 8.3 Vdc - 14 Vdc Input 0.75 Vdc - 5.0 Vdc/6 A Output Output Trim Equations Equation for calculating the trim resistor (in kΩ) given the desired adjusted voltage (Vadj) is shown below. The Trim Up resistor should be connected between the Trim pin and Ground. Vout Rtrim 10.507 = −1 Vadj − 0.7525 Module Trim Rtrim GND Equation for calculating the trim voltage (in V) given the desired adjusted voltage (Vadj) is shown below. The Trim Up voltage should be connected between the Trim pin and Ground. Vout Vtrim = 0.7 − 0.0667 × (Vadj − 0.7525) Module Trim Vtrim 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 8.3 Vdc - 14 Vdc Input 0.75 Vdc - 5.0 Vdc/6 A Output Efficiency Data MODULE 3.3V MODULE 5.0V 95.0% 8.3 12.0 14.0 90.0% 85.0% 80.0% EFFICIENCY EFFICIENCY 100.0% 75.0% 1A 2A 3A 4A 5A 6A 95.0% 90.0% 85.0% 80.0% 75.0% 70.0% 65.0% 60.0% 8.3V 12.0V 14.0V 1A OUTPUT CURRENT 2A 8.3V 12.0V 14.0V 3A 4A 5A EFFICIENCY EFFICIENCY 95.0% 90.0% 85.0% 80.0% 75.0% 70.0% 65.0% 60.0% 2A 5A 6A 95.0% 90.0% 85.0% 80.0% 75.0% 70.0% 65.0% 60.0% 8.3V 12.0V 14.0V 1A 6A 2A 3A 4A 5A 6A OUTPUT CURRENT OUTPUT CURRENT MODULE 1.2V MODULE 0.75V 90.0% 90.0% 80.0% 8.3V 12.0V 14.0V 70.0% 60.0% EFFICIENCY EFFICIENCY 4A MODULE 1.8V MODULE 2.5V 1A 3A OUTPUT CURRENT 80.0% 8.3V 12.0V 14.0V 70.0% 60.0% 50.0% 50.0% 1A 2A 3A 4A 5A OUTPUT CURRENT 6A 1A 2A 3A 4A 5A 6A 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 8.3 Vdc - 14 Vdc Input 0.75 Vdc - 5.0 Vdc/6 A Output Thermal Derating Curves Vin=12 V, Vo=0.75 V Vin=12 V, Vo=2.5 V Vin=12 V, Vo=5.0 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 8.3 Vdc - 14 Vdc Input 0.75 Vdc - 5.0 Vdc/6 A Output Ripple and Noise Waveforms Ripple and noise at full load, Vin=12 V, Vo=0.75 V Ripple and noise at full load, Vin=12 V, Vo=1.2 V Ripple and noise at full load, Vin=12 V, Vo=1.8 V Ripple and noise at full load, Vin=12 V, Vo=2.5 V Ripple and noise at full load, Vin=12 V, Vo=3.3 V Ripple and noise at full load, Vin=12 V, Vo=5.0 V Note: The output ripple and noise is tested at 0-20 MHz BW, 10 uF/10 V tantalum capacitor and 1 uF/10 V ceramic 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 8.3 Vdc - 14 Vdc Input 0.75 Vdc - 5.0 Vdc/6 A Output Transient Response Waveforms 50% to 100% load step at Vin=12 V, Vo=0.75 V 100% to 50% load step at Vin=12 V, Vo=0.75 V 50% to 100% load step at Vin=12 V, Vo=1.2 V 100% to 50% load step at Vin=12 V, Vo=1.2 V 50% to 100% load step at Vin=12 V, Vo=1.8 V 100% to 50% load step at Vin=12 V, Vo=1.8 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 8.3 Vdc - 14 Vdc Input 0.75 Vdc - 5.0 Vdc/6 A Output Transient Response Waveforms (continued) 50% to 100% load step at Vin=12 V, Vo=2.5 V 100% to 50% load step at Vin=12 V, Vo=2.5 V 50% to 100% load step at Vin=12 V, Vo=3.3 V 100% to 50% load step at Vin=12 V, Vo=3.3 V 50% to 100% load step at Vin=12 V, Vo=5.0 V 100% to 50% load step at Vin=12 V, Vo=5.0 V Note: Transient response is tested at di/dt=2.5 A/uS, with 10 uF/10 V tantalum capacitor and 1 uF/10 V ceramic 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 8.3 Vdc - 14 Vdc Input 0.75 Vdc - 5.0 Vdc/6 A Output Mechanical Outline RECOMMENDED PAD LAYOUT Pin Connections Pin Function 1 Remote On/Off 2 Vin+ 3 No Pin 4 Ground 5 Trim 6 Vout+ PAD SIZE: MIN: 0.12"* 0.095" (3.05mm * 2.41mm) MAX: 0.135"* 0.11" (3.43mm * 2.79mm) 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. 011207 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