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| NON-ISOLATED DC/DC CONVERTER 12 V Input 1.2 V-5.0 V/15 A Output VRPF-15A1AC * * * * * Non-Isolated Fixed Frequency (220 kHz) Wide Output Voltage Trim Current Sink Capability for Termination Applications UL60950 Recognized (UL/cUL) RoHS Compliant * * * * Under-Voltage Lockout (UVLO) OCP/SCP Remote On/Off Power Good Output Signal (open collector) Description The Bel VRPF-15A1AC is part of the low cost non-isolated dc/dc converter. The module uses a SIP package for ease of layout and space savings. The output is closely regulated and can be trimmed from 1.2 V to 5.0 V. The efficiency is typically 92% at 5.0 V output at full load. Typical features include remote on/off, under-voltage lockout, over-current protection and short circuit protection. Part Selection Output Voltage 1.2 V - 5.0 V Input Voltage 12 V Max. Output Current 15 A Max. Output Power 75 W Typical Efficiency 92% Model Number VRPF-15A1AC Note: Add "G" suffix at the end of the model number to indicate Tray Packaging. Absolute Maximum Ratings Parameter Input Voltage (continuous) Output Enable Terminal Voltage Ambient Temperature Storage Temperature Min -0.3 V -0.3 V 0 C -40 C Typ Max 15 V 15 V 80 C 125 C Notes Input Specifications Parameter Input Voltage Input Current (Source) Vo=5.0 V Vo=3.3 V Vo=2.5 V Vo=1.8 V Vo=1.5 V Vo=1.25 V Vo=1.2 V Input Current (Sink) Vo=5.0 V Vo=3.3 V Vo=2.5 V Vo=1.8 V Vo=1.5 V Vo=1.25 V Vo=1.2 V -5.9 A -3.8 A -2.7 A -1.9 A -1.6 A -1.3 A -1.1 A Min 10.8 V Typ 12 V 6.9 A 4.84 A 3.65 A 2.87 A 2.50 A 2.12 A 2.02 A Max 13.2 V Notes 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 CONVERTER 12 V Input 1.2 V-5.0 V/15 A Output Input Specifications (continued) Parameter Remote Off Input Current Input Reflected Ripple Current (pk-pk) Input Reflected Ripple Current (rms) I t Inrush Current Transient Turn-on Voltage Threshold Turn-off Voltage Threshold 2 Min - Typ 25 mA 0.05 A s 9.8 V 9.4 V 2 Max 30 mA 330 mA 120 mA 0.1 A s 10.4 V 10.3 V 2 Notes Tested with simulated source impedance of 500 nH 5 Hz to 20 MHz, and 5 x 10 uF/16 V ceramic capacitors at the input Note: All specifications are typical at 25 C unless otherwise stated. Output Specifications Parameter 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=1.25 V Vo=1.2 V Load Regulation Vo=5.0 V Vo=3.3 V Vo=2.5 V Vo=1.8 V Vo=1.5 V Vo=1.25 V Vo=1.2 V Line Regulation Vo=5.0 V Vo=3.3 V Vo=2.5 V Vo=1.8 V Vo=1.5 V Vo=1.25 V Vo=1.2 V Regulation Over Temperature (0 C to +80 C) Vo=5.0 V Vo=3.3 V Vo=2.5 V Vo=1.8 V Vo=1.5 V Vo=1.25 V Vo=1.2 V Output Ripple and Noise (pk-pk) Vo=5.0 V Vo=3.3 V Vo=2.5 V Vo=1.8 V Vo=1.5 V Vo=1.25 V Vo=1.2 V 5.0 mV 3.3 mV 2.5 mV 1.8 mV 1.5 mV 1.25 mV 1.2 mV 10 mV 9 mV 8 mV 7 mV 6 mV 5 mV 4 mV 60 mV 50 mV 40 mV 35 mV 35 mV 30 mV 30 mV 10.0 mV 6.6 mV 5.0 mV 3.6 mV 3.0 mV 2.5 mV 2.4 mV 20 mV 18 mV 15 mV 14 mV 13 mV 12 mV 12 mV 75 mV 65 mV 60 mV 50 mV 50 mV 50 mV 50 mV Tested at 0-20 MHz BW, with 5x10 uF/16 V ceramic capacitors at the input, and 5x10 uF/10 V ceramic capacitors and a 1000 uF electrolytic capacitor at the output. 10 mV 8 mV 5 mV 4 mV 3 mV 3 mV 2.5 mV 25.0 mV 16.5 mV 12.5 mV 9.0 mV 7.5 mV 6.3 mV 6.0 mV Min 4.900 V 3.234 V 2.450 V 1.764 V 1.470 V 1.225 V 1.176 V Typ 5.0 V 3.3 V 2.5 V 1.8 V 1.5 V 1.25 V 1.2 V Max 5.100 V 3.366 V 2.550 V 1.836 V 1.530 V 1.275 V 1.224 V Notes Test condition: Vin=12 V, lout=half 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 CONVERTER 12 V Input 1.2 V-5.0 V/15 A Output Output Specifications (continued) Parameter Output Ripple and Noise (rms) Vo=5.0 V Vo=3.3 V Vo=2.5 V Vo=1.8 V Vo=1.5 V Vo=1.25 V Vo=1.2 V Output Current Current Limit Threshold Short Circuit Surge Transient Vo=5.0 V Vo=3.3 V Vo=2.5 V Vo=1.8 V Vo=1.5 V Vo=1.25 V Vo=1.2 V Turn on Time Overshoot at Turn on Output Capacitance Vo=5.0 V Vo=3.3 V Vo=2.5 V Vo=1.8 V Vo=1.5 V Vo=1.25 V Vo=1.2 V Transient Response 50% ~ 75% Max Load Settling Time 75% ~ 50% Max Load Settling Time 50% ~ 75% Max Load Settling Time 75% ~ 50% Max Load Settling Time 50% ~ 75% Max Load Settling Time 75% ~ 50% Max Load Settling Time 50% ~ 75% Max Load Settling Time 75% ~ 50% Max Load Settling Time VO=1.2 V VO=1.25 V 2.5 V VO=3.3 V VO=5.0 V 100 mV 100 uS 100 mV 100 uS 80 mV 100 uS 80 mV 100 uS 60 mV 100 uS 60 mV 100 uS 60 mV 100 uS 60 mV 100 uS 200 mV 200 uS 200 mV 200 uS 165 mV 200 uS 165 mV 200 uS 125 mV 200 uS 125 mV 200 uS 120 mV 200 uS 120 mV 200 uS Test conditions: di/dt = 0.1 A/uS; Vin = 12 V; with 5x10 uF ceramic capacitors and a 1000 uF/16 V electrolytic at the output Min 0A 19.5 A 1050 uF 1050 uF 1050 uF 1050 uF 1050 uF 1050 uF 1050 uF Typ 18 mV 15 mV 12 mV 12 mV 10 mV 10 mV 10 mV 0.1 A s 2 0.1 A s 2 0.1 A s 2 0.3 A s 2 0.4 A s 2 0.4 A s 2 0.4 A s 20 mS 0% 2 Max 30 mV 25 mV 20 mV 20 mV 15 mV 15 mV 15 mV 15 A 37.5 A 0.3 A s 2 0.3 A s 2 0.3 A s 2 0.6 A s 2 0.8 A s 2 0.8 A s 2 0.8 A s 100 mS 3% 5080 uF 6000 uF 7840 uF 8500 uF 9000 uF 9500 uF 9680 uF 2 Notes Tested at 0-20 MHz BW, with 5x10 uF/16 V ceramic capacitors at the input, and 5x10 uF/10 V ceramic capacitors and a 1000 uF/16 V electrolytic 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 CONVERTER 12 V Input 1.2 V-5.0 V/15 A Output General Specifications Parameter Efficiency (Current Source) Vo=5.0 V Vo=3.3 V Vo=2.5 V Vo=1.8 V Vo=1.5 V Vo=1.25 V Vo=1.2 V Efficiency (Current Sink) Vo=5.0 V Vo=3.3 V Vo=2.5 V Vo=1.8 V Vo=1.5 V Vo=1.25 V Vo=1.2 V Switching Frequency Output Voltage Trim Range MTBF Dimensions Inches (L x W x H) Millimeters (L x W x H) Weight 1.2 x 1.0 x 0.457 30.48 x 25.4 x 11.6 14.2 g 88% 84% 81% 77% 73% 68% 68% 200 kHz 1.2 V 91% 87% 84% 80% 76% 71% 71% 220 kHz 3,664,032 hours 240 kHz 5.0 V Vo=1.2 V when the Trim pin is open. Calculated Per Bell Core SR-332 (IO = 12 A, Vin=12 V; Ta = 25 C) Min 90% 87% 84% 80% 78% 76% 76% Typ 92% 89% 87% 82% 80% 79% 79% Max Measured at Vin=12 V, full load. Notes Note: All specifications are typical at 25 C unless otherwise stated. Control Specifications Parameter Remote On/Off Signal Low (Unit Off) Signal High (Unit On) Power Good Power Good Delay Signal Low 2 1 Min 0V 2.4 V Typ - Max 1V 13.2 V Notes Remote On/Off pin open, the module is ON. - 0.3 V 5 mA 10 mS - Current Sink Notes: All specifications are typical at 25 C unless otherwise stated. 1. Power good delay time is the time from output voltage in full regulation to power good asserted. 2. The power good signal is an open collector output. When the output of the module reaches 90% of the nominal set point, the power good pin is set high. 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 CONVERTER 12 V Input 1.2 V-5.0 V/15 A Output Output Trim Equation Equation for calculating the trim resistor (in k) given the desired adjusted voltage (Vadj) is shown below. The Rset resistor should be connected between the Trim pin and GND. Vout 0.992 0.992 Vadj = + 1.18K + 0.992 5.62 K Rset Module Trim Rset GND Where, Vadj is the required voltage setpoint, Rset is the resistance required between TRIM and GND. Power Good Signal Level Set Equation for calculating the power good threshold (in k) given the desired adjusted voltage (Vadj) is shown below. The PWRGD_SET resistor should be connected between the PWRGD_SET pin (Pin 9) and GND. Output Voltage 5V 3.3V 2.5V 1.8V 1.5V 1.25V 1.2V PWRGD_THRESHOLD Set Resistor (1%tol) Short (Zero Ohm) 1.78k 4.22k 11.8k 26.1k 169k Open (no resistor) 1.24 - 18.86 10 -6 + 1.24 PWRGD _ THRESHOLD = 6.19 K 2.21K + Rset Where, Rset is the resistance required between PWRGD_SET and 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 CONVERTER 12 V Input 1.2 V-5.0 V/15 A Output Efficiency Data Efficiency Curve 94.0% 92.0% 90.0% 88.0% 86.0% 84.0% 82.0% 80.0% 78.0% 76.0% 74.0% 1.5 3.75 7.5 11.25 15 Output Current (A) 92.0% 90.0% 88.0% 86.0% 84.0% 82.0% 80.0% 78.0% 76.0% 74.0% 72.0% 1.5 3.75 7.5 11.25 15 Output Current (A) Efficiency Curve Efficiency Efficiency 10.8 V 12.0 V 13.2 V 10.8 V 12.0 V 13.2 V Vo=5.0 V Efficiency Curve 90.0% 88.0% 86.0% 84.0% 82.0% 80.0% 78.0% 76.0% 74.0% 72.0% 70.0% 1.5 3.75 7.5 11.25 15 Output Current (A) 86.0% 84.0% 82.0% 80.0% 78.0% 76.0% 74.0% 72.0% 70.0% 68.0% 66.0% 64.0% 62.0% 1.5 3.75 Vo=3.3 V Efficiency Curve Efficiency Efficiency 10.8 V 12.0 V 13.2 V 10.8 V 12.0 V 13.2 V 7.5 11.25 15 Output Current (A) Vo=2.5 V Efficiency Curve 84.0% 82.0% 80.0% 78.0% 76.0% 74.0% 72.0% 70.0% 68.0% 66.0% 64.0% 62.0% 60.0% 1.5 3.75 7.5 11.25 15 Output Current (A) 84.0% 82.0% 80.0% 78.0% 76.0% 74.0% 72.0% 70.0% 68.0% 66.0% 64.0% 62.0% 60.0% 58.0% 56.0% 54.0% 1.5 3.75 Vo=1.8 V Efficiency Curve Efficiency Efficiency 10.8 V 12.0 V 13.2 V 10.8 V 12.0 V 13.2 V 7.5 Output Current (A) 11.25 15 Vo=1.5 V Efficiency Curve 84.0% 82.0% 80.0% 78.0% 76.0% 74.0% 72.0% 70.0% 68.0% 66.0% 64.0% 62.0% 60.0% 58.0% 56.0% 54.0% 1.5 3.75 7.5 11.25 15 Output Current (A) Vo=1.25 V Efficiency 10.8 V 12.0 V 13.2 V Vo=1.2 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 CONVERTER 12 V Input 1.2 V-5.0 V/15 A Output Thermal Derating Curves Vo = 5.0 V Vo = 3.3 V Vo = 2.5 V Vo = 1.8 V Vo = 1.5 V Vo = 1.25 V Vo = 1.2 V Test Condition: The module is mounted on 2 OZ two-layer FR4 board. 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 CONVERTER 12 V Input 1.2 V-5.0 V/15 A Output Mechanical Outline Pin Connections Pin 1 2 3 4 5 6 7 8 9 10 11 Function Vout Vout Vout Trim Output Enable Power Good Ground Ground PWRGD_SET Vin Vin RoHS Compliance Complies with the European Directive 2002/95/EC, calling for the elimination of lead and other hazardous substances from electronic products. (c)2005 Bel Fuse Inc. Specifications subject to change without notice. 122805 CORPORATE Bel Fuse Inc. 206 Van Vorst Street Jersey City, NJ 07302 Tel 201-432-0463 Fax 201-432-9542 www.belfuse.com FAR EAST 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 EUROPE 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 |
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