NON-ISOLATED DC/DC CONVERTERS 12V Input Vref/2 / 10A Output V7PC-10AT5x • Non-Isolated • Remote On/Off • High Efficiency • Under-voltage Lockout (UVLO) • High Power Density • OCP/SCP • Low Cost • Remote Sense Description The V7PC-10AT5x is a non-isolated step down DC/DC converter that operates from a nominal 12V source. This converter is designed specifically to provide bus termination voltages in applications such as DDR (double data rate) memory where the bus termination voltage must closely track the I/O bus voltage. The converter accepts a reference input and uses this to program its output voltage to 50% of the reference. The unit is packaged in an industry-standard single-in-line footprint and provides a maximum 10A output. Standard features include remote on/off, input under-voltage lockout, over current protection and remote sense. Replace “x” in the part number with “S” or “A” depending on your specific application and specific external capacitor bank. Part Selection Output Voltage Vref/2 Vref/2 Input Voltage 12V 12V Max. Output Current 10A 10A Max. Output Power 25W 25W Typical Efficiency 82% 82% Model Number V7PC-10AT5S V7PC-10AT5A Note: Add “G” suffix at the end of the model number to indicate “Tray Packaging”. See page 5 for model number differences. Absolute Maximum Ratings Parameter Input Voltage (continuous) Output Enable Terminal Voltage Ambient Temperature Storage Temperature Min -0.3V -0.3V 0°C -40°C Typ - Max 15V 15V 70°C 100°C Notes Input Specifications Parameter Input Voltage Input Current (full load) Input Reference Voltage Input Current (no load) Remote Off Input Current Min 10.8V - Typ 3 Max 13.2V 2.1A <3.5V 50mA 15mA Input Reflected Ripple Current (pk-pk) - - 180mA Input Reflected Ripple Current (RMS) - - 2 I t Inrush Current Transient Turn-on Voltage Threshold Turn-off Voltage Threshold 8.0V 50mA 2 0.08A s 9.7V 8.8V Notes Tested with a 470uF/16V input capacitor with ESR=0.03 ohm max at 100KHz & simulated source impedance of 500nH, 5Hz to 20MHz. 2 0.16A s 10V Note: All specifications are tested at Vref =2.5V. 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 12V Input Vref/2 / 10A Output Output Specifications Parameter Min Typ Max 0.985 (Vref/2) V Vref/2 V 1.015(Vref/2) V Load Regulation - 3mV 10mV Line Regulation - 3mV 10mV Regulation Over Temperature (0°C to 70°C) - 5mV 20mV Output Current 0A - 10A Current Limit Threshold 13A - Output Voltage Set Point Short Circuit Surge Transient 22A - 2 0.35A s 0.7A s Output Ripple and Noise (pk-pk) - 45mV 100mV Output Ripple and Noise (RMS) - 11mV 25mV Turn on Time - 50mS 80mS Overshoot at Turn on - 0% 3% 470uF - 5600uF Output Capacitance Notes Test conditions: Vin=12V, Iout= full load 2 Test conditions: 0-20MHz BW, 0.1uF ceramic capacitor at the output Notes: 1. All specifications are typical at nominal input, full load at 25°C unless otherwise stated. 2. All specifications are tested at Vref=2.5V. 3. The modules track the transient response of the reference input. See the figure in TR data on Page 3. General Specifications Parameter Efficiency (Vin=12V, Io=Io-max ) Switching Frequency Min 80% Typ 82% Max - 180KHz 200KHz 220KHz MTBF Notes Calculated Per Bell Core TR-332 (IO = 80% load; Vin=12V; Ta = 25°C) 3,403,119 hours Dimensions Inches (L × W × H) Millimeters (L × W × H) Remote sense compensation - Weight - 2.5 x 0.55 x 0.37 63.5 x 13.97 x 9.4 0.5V 9.5g - Note: All specifications are typical at 25°C unless otherwise stated. Control Specifications Parameter Min Typ Max Signal Low (Unit Off) -0.3V - 0.3V Signal High (Unit On) 2.8V - 13.2V Notes Remote On/Off 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 12V Input Vref/2 / 10A Output Transient Response: di/dt=0.5A/uS, External Load Capacitance Co=470uF (electrolytic) V7PC-10AT5S and V7PC-10AT5A. -50% to 50% load Transient at 12V input and Ta=25°C 50% to -50% load Transient at 12V input and Ta=25°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 12V Input Vref/2 / 10A Output Efficiency Data Module 1.25V 90.0% EFFICIENCY 85.0% 10.8V 12.0V 80.0% 75.0% 13.2V 70.0% 65.0% 60.0% 1.0 3.0 5.0 7.0 OUTPUT CURRENT 9.0 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 12V Input Vref/2 / 10A Output Pin Connections Pin Function 1 Vo+ 2 Vo+ 3 Opt. Remote Sense (+) 4 Vo+ 5 Ground 6 Ground 7 Vin+ 8 Vin+ 9 Not used 10 Vref 11 Remote On/Off Model Number Description V7PC-10AT5S: Designed to accept its reference input from a G7NB-81A180. For use with other reference inputs, consult factory. Compensated for 1 X 560uF Oscon external capacitor. V7PC-10AT5A: Designed to accept its reference input from a V7XE-20AS20. For use with other reference inputs, consult factory. Compensated for 12 X 100uF ceramic in parallel with 2 X 820uF Oscon in parallel with 16 X 4.7uF ceramic. . ©2005 Bel Fuse Inc. Specifications subject to change without notice. 031805 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