NON-ISOLATED DC/DC CONVERTERS 5.0 Vdc Input 1.2 Vdc - 3.3 Vdc/15 A Output VRPF-15B1AC • • • • • RoHS Compliant Non-Isolated Fixed Frequency (300 kHz) Remote On/Off Low Cost Power Good Output Signal (open collector) • • • • Rev.A Wide Trim Range Under-voltage Lockout (UVLO) OCP/SCP Converter Can Sink and Source Current Description The Bel VRPF-15B1AC is part of the low cost non-isolated dc/dc converter series. The modules use a SIP package for ease of layout and space savings. The output is closely regulated and can be trimmed from 1.2 Vdc to 3.3 Vdc. The efficiency is typically 93% at 3.3 Vdc output at full load. Typical features include remote on/off, under-voltage lockout, over-current protection and short circuit protection. Part Selection Output Voltage Input Voltage 1.2 Vdc - 3.3 Vdc 5 Vdc Max. Output Current 15 A Max. Output Power 49.5 W Typical Efficiency 93% Model Number VRPF-15B1AC Notes: 1. All part numbers above indicate RoHS 6. Change the second letter "R" to "7" for RoHS 5 part numbers. 2. Add “0” suffix at the end of the model number to indicate “Tube Packaging”, and “G” for “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 7V 7V 80 °C 125 °C Notes Input Specifications Parameter Input Voltage Input Current (Source) Min 4.5 V Typ 5V Max 5.5 V Vo=3.3 V Vo=1.8 V Vo=1.2 V - 11.7 A 6.8 A 4.8 A 12.5 A 7.4 A 5.2 A Vo=3.3 V Vo=1.8 V Vo=1.2 V No Load Input Current Remote Off Input Current - -10 A -5 A -3 A 35 mA 10 mA -7.8 A -3.8 A -2.3 A 22 mA Input Reflected Ripple Current (pk-pk) - 90 mA 150 mA Input Reflected Ripple Current (rms) - 20 mA 40 mA - 2 Notes Input Current (Sink) 2 I t Inrush Current Transient Turn-on Voltage Threshold Turn-off Voltage Threshold 0.02 A s 4.25 V 4V Tested with simulated source impedance of 500 nH, 5 Hz to 20 mHz and five 10 uF/10 V capacitors (P/N: C3216X5R1A106K, TDK) at the input 2 0.05 A s - Note: All specifications are typical 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 5.0 Vdc Input 1.2 Vdc - 3.3 Vdc/15 A Output Output Specifications Parameter Output Voltage Set Point Min Typ Max VO=3.3 V VO=1.8 V VO=1.2 V 3.234 V 1.764 V 1.176 V 3.3 V 1.8 V 1.2 V 3.366 V 1.836 V 1.224 V VO=3.3 V VO=1.8 V VO=1.2 V - 5 mV 3 mV 2 mV 8 mV 5 mV 4 mV VO=3.3 V VO=1.8 V VO=1.2 V - 2 mV 1 mV 1 mV 5 mV 3 mV 2 mV Regulation Over Temperature (0°C to +80 °C) VO=3.3 V VO=1.8 V VO=1.2 V - 13 mV 9 mV 8 mV 28 mV 18 mV 15 mV Output Ripple and Noise (pk-pk) - 30 mV 50 mV Output Ripple and Noise (rms) - 5 mV 15 mV Output Current -15 A - 15 A Current Limit Threshold 19 A - 35 A - 0.5 A s 1A s Turn on Time - 10 mS 20 mS Overshoot at Turn on - 0% 3% - - 13200 uF 16400 uF 17600 uF Notes Test condition: Vin=5 V, lout=50% full load Load Regulation Line Regulation Short Circuit Surge Transient 2 Line/Load regulation is the deviation from nominal to minimum and maximum line/load. Tested at 0-20 MHz BW with 1000 uF electrolytic capacitor & five 10 uF/10 V TDK C3216X5R1A106K capacitors and 0.1 uF ceramic capacitor at the output 2 Output Capacitance VO=3.3 V VO=1.8 V VO=1.2 V Transient Response - 50% ~ 100% Max Load Settling Time 100% ~ 50% Max Load Settling Time VO=1.2 V3.3 V - 35 mV 50 mV 50 uS 100 uS 35 mV 50 mV 50 uS 100 uS Test conditions: di/dt = 0.1 A/uS; Vin = 5 V; with 1000 uF electrolytic capacitor and five 10 uF/10 V TDK C3216X5R1A106K ceramic capacitors 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 CONVERTERS 5.0 Vdc Input 1.2 Vdc - 3.3 Vdc/15 A Output General Specifications Parameter Efficiency (Current Source) VO=3.3 V VO=1.8 V VO=1.2 V Efficiency (Current Sink) VO=3.3 V VO=1.8 V VO=1.2 V Switching Frequency Output Voltage Trim Range Min Typ Max 89% 83% 80% 93% 87% 82% - 90% 83% 75% 300 kHz - 325 kHz 3.3 V 86% 79% 72% 275 kHz 1.2 V MTBF Notes Measured at Vin=5 V, full load. Calculated Per Bell Core SR-332 (Vin=5.0 V, IO=12 A; Ta = 25 °C) 4,573,743 hours Dimensions Inches (L × W × H) Millimeters (L × W × H) Weight - 1.2 x 1.0 x 0.457 30.48 x 25.4 x 11.6 13 g - Note: All specifications are typical at 25 °C unless otherwise stated. Control Specifications Parameter Min Typ Max -0.3 V 2.4 V - 0.3 V 5 mA 0.8 V 7V 10 mS - Notes Remote On/Off Signal Low (Unit Off) Signal High (Unit On) 1 Power Good Delay 2 Signal Low 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 is higher than 90% of the nominal set point, the power good pin is high. Output Trim Equation Equation for calculating the trim resistor (in kΩ) given the desired adjusted voltage (Vadj) is shown below. The Rtrim resistor should be connected between the Trim pin and Ground. ⎛ 0.992 0.992 ⎞ Vadj = ⎜ + ⎟ ⋅ 1.18 K + 0.992 ⎝ 5.62 K Rtrim ⎠ Vout Module Trim Rtrim GND Power Good Signal Level Set Equation for calculating the power good threshold (in kΩ) given the desired adjusted voltage (Vadj) is shown below. The Rset resistor should be connected between the PG_set pin (Pin 9) and Ground. 1.24 ⎛ ⎞ − 18.86 ⋅ 10 − 6 ⎟ + 1.24 PG _ Threshold = 6.19 K ⎜ ⎝ 2.21K + Rset ⎠ 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 5.0 Vdc Input 1.2 Vdc - 3.3 Vdc/15 A Output Efficiency Data 97.0% 96.5% 96.0% 95.5% 95.0% 94.5% 94.0% 93.5% 93.0% 92.5% 92.0% 4.5 V 5.0 V 5.5 V 1.5 3.75 7.5 11.25 15.0 Vo=3.3 V 95.0% 94.0% 93.0% 92.0% 91.0% 90.0% 89.0% 88.0% 87.0% 86.0% 85.0% 4.5 V 5.0 V 5.5 V 1.5 3.75 7.5 11.25 15.0 Vo=1.8 V 92.0% 90.0% 88.0% 4.5 V 5.0 V 5.5 V 86.0% 84.0% 82.0% 80.0% 1.5 3.75 7.5 11.25 15.0 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 CONVERTERS 5.0 Vdc Input 1.2 Vdc - 3.3 Vdc/15 A Output Thermal Derating Curves Vo=3.3 V Vo=1.8 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 CONVERTERS 5.0 Vdc Input 1.2 Vdc - 3.3 Vdc/15 A Output Ripple and Noise Waveforms Vout=1.2 V Vout=1.8 V Vout=3.3 V Note: Ripple and noise at max load input=5.0 V, 0-20 MHz BW, with external 5x10 uF/10 V and 0.1 uF/25 V ceramic capacitor, 1000uF electrolytic capacitor at the output, and 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 5.0 Vdc Input 1.2 Vdc - 3.3 Vdc/15 A Output Transient Response Waveforms Transients 50% to 75% load, 1.2 Vdc Output Transients 50% to 75% load, 1.8 Vdc Output Transients 50% to 75% load, 3.3 Vdc Output Transients 75% to 50% load, 1.2 Vdc Output Transients 75% to 50% load, 1.8 Vdc Output Transients 75% to 50% load, 3.3 Vdc Output Note: Transient Response at Vin=5 Vdc, with external load capacitor 5 x10 uF/10 V and 0.1 uF/25 V ceramic capacitor and an 1000 uF electrolytic capacitor at the output, and 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 5.0 Vdc Input 1.2 Vdc - 3.3 Vdc/15 A Output Mechanical Outline Pin Connections Pin 1 2 3 4 5 6 7 8 9 10 11 Function Vo+ Vo+ Vo+ Trim Remote On/Off Power Good Ground Ground PG_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. ©2007 Bel Fuse Inc. Specifications subject to change without notice. 012907 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