NON-ISOLATED DC/DC CONVERTERS 8.3V-14V Input 0.75V-5.0V/3A Output V7BA-03A1Ax Series • Non-Isolated • Under-voltage Lockout (UVLO) • Fixed Frequency • OCP/SCP • High Efficiency • Remote On/Off • High Power Density • Wide Trim Range • Active Low/High (option) • Wide Input Range Description The Bel V7BA-03A1Ax modules are a series of non-isolated DC/DC converters that deliver up to 3A of output current with full load efficiency of 93% at 5.0V output. These modules provide precisely regulated voltage programmable via external resistor from 0.75V to 5.5V over a wide range of input voltage. Their open-frame construction and small footprint enable designers to develop cost and space-efficient solutions. Standard features include remote On/Off, programmable output voltage, over-temperature protection, over current protection, short circuit protection, and undervoltage lockout. Part Selection Output Voltage Input Voltage Max. Output Current Max. Output Power Typical Efficiency at 5.0V Model Number Active High Model Number Active Low 0.75V – 5.0V 8.3V - 14V 3A 15W 93% V7BA-03A1A0 V7BA-03A1AL Note: Add “G” suffix at the end of the model number to indicate Tray Packaging. Absolute Maximum Ratings Parameter Min Typ Max Input Voltage (continuous) -0.3V - 15V Output Enable Terminal Voltage -0.3V - 15V Ambient Temperature -40°C - 85°C Storage Temperature -55°C - 125°C Notes Note: All specifications are typical at 25°C unless otherwise stated. Input Specifications Parameter Input Voltage Input Current (full load) Min 8.3V Typ 12V Max 14V Vo=5.0V Vo=3.3V Vo=0.75V - 1.35A 0.90A 0.24A 2.00A 1.37A 0.37A Vo=5.0V Vo=3.3V Vo=0.75V - 55mA 40mA 15mA 65mA 50mA 20mA Notes Input Current (no 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 8.3V-14V Input 0.75V-5.0V/3A Output Input Specifications (continued) Parameter Remote Off Input Current Input Reflected Ripple Current (pk-pk) Vo=5.0V Vo=3.3V Vo=0.75V Input Reflected Ripple Current (RMS) Vo=5.0V Vo=3.3V Vo=0.75V 2 I t Inrush Current Transient Min - Typ 3mA Max 6mA Notes - 70mA 60mA 25mA 100mA 90mA 40mA - 20mA 15mA 6mA 2 0.01A s 60mA 30mA 15mA 2 0.02A s Turn-on Voltage Threshold 7.6V 7.9V 8.2V Turn-off Voltage Threshold 7.0V 7.8V 8.1V Tested with two 100uF/25V tantalum input capacitors & simulated source impedance of 1uH, 5Hz to 20MHz. 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 Load Regulation 0.5%Vo,set 0.4%Vo,set 0.5%Vo,set Notes Vin=12V, lo=lomax, full load Over all operating input voltages, resistive loads and temperature conditions Io=Io, min to Io, max Line Regulation Regulation Over Temperature (-40°C to +85°C) Output Current 0.4%Vo,set 0.3%Vo,set 0.4%Vo,set Vin=Vin, min to Vin, max - 0.5%Vo,set 0.8%Vo,set 0A - 3A Current Limit Threshold Short Circuit Surge Transient 4.2A - 11A 2 - 0.1A s - Vo=5.0V Vo=3.3V Vo=0.75V - 80mV 55mV 25mV 120mV 80mV 45mV Vo=5.0V Vo=3.3V Vo=0.75V - 25mV 15mV 5mV 5mS 45mV 25mV 10mV 8mS - 0% 3% 0uF - 1200uF Ripple and Noise (pk-pk) Ripple and Noise (RMS) Turn on Time Overshoot at Turn on Output Capacitance Tested with 0-20MHz, with 10uF/10V tantalum capacitor and 1uF/10V ceramic capacitor at the output Transient Response 50% ~ 100% Max Load Settling Time 100% ~ 50% Max Load Settling Time All - 200mV 300mV - 50uS 80uS - 200mV 300mV - 50uS 80uS di/dt=2.5A/uS; Vin=12V; and with 10uF/10V tantalum capacitor and 1uF/10V ceramic capacitor at the output Note: All specifications are typical at nominal input (Vin=12V), 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 8.3V-14V Input 0.75V-5.0V/3A Output General Specifications Parameter Min Typ Max 89% 86% 73% - 93% 90% 77% 300KHz - - 135°C - Notes Efficiency Vo=5.0V Vo=3.3V Vo=0.75V Switching Frequency Over Temperature Shutdown MTBF Calculated Per Bell Core TR-332 (IO = Nominal; Ta = 25°C) 8,791,825 hours Dimensions (Vertical Mount) Inches (L × W × H) Millimeters (L × W × H) Weight - 0.9 x 0.4 x 0.243 22.9 x 10.2 x 6.16 2.5g Measured at Vin=12V, full load (Current Source) - Note: All specifications are typical at 25°C unless otherwise stated. Control Specifications Parameter Remote On/Off Min Typ Max Signal Low (Unit Off) -0.3V - 0.4V Signal High (Unit On) 2.5V - 14V Signal Low (Unit On) -0.3V - 0.4V Signal High (Unit Off) 2.5V - 14V 0.7525V - 5.0V Output Voltage Trim Range (Wide Trim) Notes V7BA-03A1A0; Remote On/Off pin open, Unit on. V7BA-03A1AL; Remote On/Off pin open, Unit on. 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 8.3V-14V Input 0.75V-5.0V/3A Output Efficiency Data MODULE 5.0V EFFICIENCY 100.0% 95.0% 90.0% 85.0% 80.0% 75.0% 70.0% 65.0% 60.0% 0.30A 8.3V 12.0V 14.0V 0.75A 1.50A 2.25A OUTPUT CURRENT 3.00A EFFICIENCY MODULE 3.3V 95.0% 90.0% 85.0% 80.0% 75.0% 70.0% 65.0% 60.0% 0.30A 8.3V 12.0V 14.0V 0.75A 1.50A 2.25A OUTPUT CURRENT 3.00A MODULE 0.75V EFFICIENCY 85.0% 75.0% 65.0% 8.3V 12.0V 14.0V 55.0% 45.0% 0.30A 1.75A 1.50A 2.25A OUTPUT CURRENT 3.00A 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 8.3V-14V Input 0.75V-5.0V/3A Output Thermal Derating Curves Vin=12V, Vo=5.0V Vin=12V, Vo=3.3V Vin=12V, Vo=0.75V 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 8.3V-14V Input 0.75V-5.0V/3A Output Pin Connections Pin Function 1 Vout 2 Trim 3 Ground 4 Vin 5 Remote On/Off 2005 Bel Fuse Inc. Specifications subject to change without notice. 020405 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