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NON-ISOLATED DC/DC CONVERTERS
5V Input / 1.2V - 3.3V Output / 15A VRPD-15B Series
* * * * * * * * * * Nonisolated Industry standard pinout Fixed frequency High efficiency means less power dissipation Optimized for cost Remote on/off Undervoltage lockout (UVLO) Over current and short circuit protection Remote sense Over temperature shutdown protection
POWER PRODUCTS
BP06VRPD-15B
RoHS Compliant
Description
The Bel VRPD-15B modules are a series of non-isolated, step down DC/DC power converters that operate from a nominal 5V source. These converters are available in a range of output voltages from 1.2V to 3.3V. They are packaged in an industry standard, single-in-line footprint and provide a maximum 15A output. Standard features include remote on/off, over current and short circuit protection, output voltage adjust and remote sense. These products may be used almost anywhere low voltage silicon is employed and a 5V source is available. Typical applications include file servers, routers, line cards and other computing and communications equipment.
Applications
* * * * Distributed power architectures Data networking equipment Telecommunications Computers and peripherals
Options
* Reverse remote on/off logic
Part Number Selection
Output Voltage 3.3V 2.5V 1.8V 1.5V 1.2V Input Voltage 5V 5V 5V 5V 5V Max. Output Current 15A 15A 15A 15A 15A Max. Output Power 49.5W 37.5W 27.0W 22.5W 18.0W Typical Efficiency 93% 91% 89% 86% 83% Part Number Active High VRPD-15B330 VRPD-15B250 VRPD-15B180 VRPD-15B150 VRPD-15B120 Part Number Active Low VRPD-15B33L VRPD-15B25L VRPD-15B18L VRPD-15B15L VRPD-15B12L
(c)2006 Bel Fuse Inc.
Specifications subject to change without notice. 06.06
Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 * Tel 201-432-0463 * Fax 201-432-9542 * www.belfuse.com page 1
POWER PRODUCTS
BP02V7PD-15B
NON-ISOLATED DC/DC CONVERTERS
5V Input / 1.2V - 3.3V Output / 15A
Absolute Maximum Ratings
Parameter Continuous Input Voltage Output Enable Terminal Voltage Ambient Temperature Storage Temperature Symbol Vin Vouten Tamb Tstor Min -0.3 -0.3 0 -55 Typical Max 6 6 70 105 Unit V V C C
Note: Use beyond the maximum ratings may cause a reliability degradation of the DC/DC converter or may permanently damage the device.
Input Specifications
Parameter Operating Input Voltage Input Current 3.3V 2.5V 1.8V 1.5V 1.2V No Load Input Current Remote Off Input Current Input Reflected Ripple Current1 Input Reflected Ripple Current (P-P)1 I2t Inrush Current Transient Turn On Voltage Threshold Turn Off Voltage Threshold All Al l All All All All All 70 6 50 135 0.18 4.25 3.85 Module All Symbol Vin Iin 13.5 10.5 7.6 6.5 5.3 100 10 80 160 mA mA mArms mApk A 2s V V Min 4.5 Typical 5 Max 5.5 Units V A
Note: Input capacitance a 680F/6.3V and a 270F/16V Oscon caps 1. With simulated source impedance of 500nH, 5Hz to 20MHz.
(c)2006 Bel Fuse Inc.
Specifications subject to change without notice. 06.06
Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 * Tel 201-432-0463 * Fax 201-432-9542 * www.belfuse.com page 2
NON-ISOLATED DC/DC CONVERTERS
5V Input / 1.2V - 3.3V Output / 15A Output Specifications
Parameter Output Voltage Set Point
1
POWER PRODUCTS
BP06VRPD-15B
Units V
Module
Symbol Vout
Min
Typical
Max
3.3V 2.5V 1.8V 1.5V 1.2V Load Regulation 3.3V 2.5V 1.8V 1.5V 1.2V Line Regulation 3.3V 2.5V 1.8V 1.5V 1.2V Regulation Over Temperature 3.3V 2.5V 1.8V 1.5V 1.2V Total Output Voltage Regulation 3.3V 2.5V 1.8V 1.5V 1.2V Output Ripple and Noise 2 3.3V 2.5V 1.8V 1.5V 1.2V Output Ripple and Noise 2 3.3V 2.5V 1.8V 1.5V 1.2V Output Current Range Output DC Current Limit Shor t Circuit Surge 3.3V 2.5V 1.8V 1.5V 1.2V Turn on Time Overshoot at Turn On Output Capacitance All All All Cout Ton All All Iout Ioutlim Ioutsurge
3.234 2.450 1.764 1.470 1.176
3.3 2.5 1.8 1.5 1.2
3.366 2.550 1.836 1.530 1.224 mV
8 6 6 5 5
16.5 12.5 11.0 10.5 10.5 mV
5 3 3 2 2
10 7.5 6.0 4.5 4.5 mV
15 10 7 5 5
35 25 20 15 15 mV
28 19 16 12 12 50 50 48 45 38
61.5 45 37 30 30 100 100 90 80 70 mVp-p
mVrms 25 20 18 15 12 0 19.5 30 25 23 20 17 15 37.5 A A A2s 0.041 0.048 0.070 0.081 0.095 11 0 0 20 3 6800 ms % F
Note: All specifications are typical at nominal input, full load at 25 C unless otherwise stated. 1. Vin = 5V, Iout = full load, Ta = 25 C. 2. 0 - 20MHz, 0.1F ceramic cap on output.
(c)2006 Bel Fuse Inc. Specifications subject to change without notice. 06.06
Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 * Tel 201-432-0463 * Fax 201-432-9542 * www.belfuse.com page 3
POWER PRODUCTS
BP02V7PD-15B
NON-ISOLATED DC/DC CONVERTERS
5V Input / 1.2V - 3.3V Output / 15A
Output Specifications
Parameter Transient Response
3
Module
Symbol
Min
Typical
Max
Units
V 50% to 100% of Max Load Settling Time 3.3V V 100% to 50% of Max Load Settling Time Transient Response
3
88 Ts 20 85 Ts 20
150 50 150 50
mV s mV s
V 50% to 100% of Max Load Settling Time 2.5V V 100% to 50% of Max Load Settling Time Transient Response
3
95 Ts 20 95 Ts 20
150 50 150 50
mV s mV s
V 50% to 100% of Max Load Settling Time 1.8V V 100% to 50% of Max Load Settling Time Transient Response
3
94 Ts 20 92 Ts 20
150 50 150 50
mV s mV s
V 50% to 100% of Max Load Settling Time 1.5V V 100% to 50% of Max Load Settling Time Transient Response
3
95 Ts 20 95 Ts 20
150 50 150 50
mV s mV s
V 50% to 100% of Max Load Settling Time 1.2V V 100% to 50% of Max Load Settling Time Ts Ts
80 20 75 20
150 50 150 50
mV s mV s
Note: All specifications are typical at nominal input, full load at 25 C unless otherwise stated. 3. di/dt = 0.5A/1S, Ta = 25 C without external load capacitance.
(c)2006 Bel Fuse Inc.
Specifications subject to change without notice. 06.06
Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 * Tel 201-432-0463 * Fax 201-432-9542 * www.belfuse.com page 4
NON-ISOLATED DC/DC CONVERTERS
5V Input / 1.2V - 3.3V Output / 15A
POWER PRODUCTS
BP06VRPD-15B
General Specifications
Parameter Efficiency1 3.3V 2.5V 1.8V 1.5V 1.2V Switching Frequency Over temperature Shutdown Output Voltage Trim Range2 Weight All All All All Fsw Tc 90 15 Module Symbol 91 89 87 84 81 230 93 91 89 86 83 300 120 110 340 kHz C % g Min Typical Max Units %
1. Vin=5V, full load and Ta=25 C. 2. See graphs on pages 11-13.
Control Specifications
Parameter Remote On/Off
3
Module
Symbol Vouten
Min
Typical
Max
Units V
Signal Low (Unit Off) V7PD-15Bxx0 Signal High (Unit On) Signal Low (Unit On) V7PD-15BxxL Signal High (Unit Off)
-0.3 2.5 -0.3 2.5
0.8 5.5 0.8 5.5
V V V V
3. With remote on/off pin 11 open, the module is on.
(c)2006 Bel Fuse Inc.
Specifications subject to change without notice. 06.06
Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 * Tel 201-432-0463 * Fax 201-432-9542 * www.belfuse.com page 5
POWER PRODUCTS
BP02V7PD-15B
NON-ISOLATED DC/DC CONVERTERS
5V Input / 1.2V - 3.3V Output / 15A
Efficiency Data
Module 3.3V
98% 96% 94%
Module 2.5V
94% 92%
Efficiency
Efficiency
92% 90% 88% 86% 84% 82% 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
4.5V 5V 5.5V
90% 88% 86% 84% 82% 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
4.5V 5V 5.5V
Output Current
Output Current
Module 1.8V
94% 92% Efficiency 90% 88% 86% 84% 82% 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 4.5V 5V 5.5V
Output Current
Module 1.5V 94% 92% 90% Efficiency
Efficiency 94% 92% 90%
Module 1.2V
88% 86% 84% 82% 80% 78% 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
4.5V 5V 5.5V
88% 86% 84% 82% 80% 78% 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
4.5V 5V 5.5V
Output Current
Output Current
(c)2006 Bel Fuse Inc.
Specifications subject to change without notice. 06.06
Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 * Tel 201-432-0463 * Fax 201-432-9542 * www.belfuse.com page 6
NON-ISOLATED DC/DC CONVERTERS
5V Input / 1.2V - 3.3V Output / 15A Ripple and Noise
0.1F ceramic cap added at the output.
POWER PRODUCTS
BP06VRPD-15B
Ripple and noise at full load and 5Vdc input, 3.3Vdc output and Ta=25 C
Ripple and noise at full load and 5Vdc input, 2.5Vdc output and Ta=25 C
Ripple and noise at full load and 5Vdc input, 1.8Vdc output and Ta=25 C
Ripple and noise at full load and 5Vdc input, 1.5Vdc output and Ta=25 C
Ripple and noise at full load and 5Vdc input, 1.2Vdc output and Ta=25 C
(c)2006 Bel Fuse Inc. Specifications subject to change without notice. 06.06
Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 * Tel 201-432-0463 * Fax 201-432-9542 * www.belfuse.com page 7
POWER PRODUCTS
BP02V7PD-15B
NON-ISOLATED DC/DC CONVERTERS
5V Input / 1.2V - 3.3V Output / 15A
Transient Response
Transient response: di/dt = 0.5A/S, no external load capacitance
Vout=3.3V 50% to 100% load transients at 5V input and Ta=25 C
Vout=3.3V 100% to 50% load transients at 5V input and Ta=25 C
Vout=2.5V 50% to 100% load transients at 5V input and Ta=25 C
Vout=2.5V 100% to 50% load transients at 5V input and Ta=25 C
(c)2006 Bel Fuse Inc.
Specifications subject to change without notice. 06.06
Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 * Tel 201-432-0463 * Fax 201-432-9542 * www.belfuse.com page 8
NON-ISOLATED DC/DC CONVERTERS
5V Input / 1.2V - 3.3V Output / 15A Transient Response
Transient response: di/dt = 0.5A/S, no external load capacitance
POWER PRODUCTS
BP06VRPD-15B
Vout=1.8V 50% to 100% load transients at 5V input and Ta=25 C
Vout=1.8V 100% to 50% load transients at 5V input and Ta=25 C
Vout=1.5V 50% to 100% load transients at 5V input and Ta=25 C
Vout=1.5V 100% to 50% load transients at 5V input and Ta=25 C
(c)2006 Bel Fuse Inc.
Specifications subject to change without notice. 06.06
Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 * Tel 201-432-0463 * Fax 201-432-9542 * www.belfuse.com page 9
POWER PRODUCTS
BP02V7PD-15B
NON-ISOLATED DC/DC CONVERTERS
5V Input / 1.2V - 3.3V Output / 15A
Transient Response
Transient response: di/dt = 0.5A/S, no external load capacitance
Vout=1.2V 50% to 100% load transients at 5V input and Ta=25 C
Vout=1.2V 100% to 50% load transients at 5V input and Ta=25 C
Thermal Considerations
V7PD-15B
Derating Curve 15.0
100LFM 200LFM 300LFM
Output Current (A)
12.0 9.0 6.0 Natural Convection 3.0 0
0 10 20 30 40 50 60 70 85
Ambient Temperature, Ta (C) Output Current vs. Local Ambient Temperature and Air Velocity
(c)2006 Bel Fuse Inc.
Specifications subject to change without notice. 06.06
Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 * Tel 201-432-0463 * Fax 201-432-9542 * www.belfuse.com page 10
POWER PRODUCTS
BP02V7PD-15B
NON-ISOLATED DC/DC CONVERTERS
5V Input / 1.2V - 3.3V Output / 15A
Output Voltage Set-Point Adjustment
Trim Down Test Circuit
Vo
Trim Up Test Circuit
Vo
Trim
Trim
Gnd
Gnd
Output Voltage Set-Point Adjustment
VRPD-15B33x Trim Resistor Calculation
Rtrim down = (
3.17 Vo adj - 0.767 Vo nom - 3.65) Kohm Vo nom - Vo, adj
Rtrim up =
(
0.767 Vo nom Vo, adj - Vo nom
- 3.65) Kohm
(c)2006 Bel Fuse Inc.
Specifications subject to change without notice. 06.06
Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 * Tel 201-432-0463 * Fax 201-432-9542 * www.belfuse.com page 11
POWER PRODUCTS
BP02V7PD-15B
NON-ISOLATED DC/DC CONVERTERS
5V Input / 1.2V - 3.3V Output / 15A
Output Voltage Set-Point Adjustment
VRPD-15B25x Trim Resistor Calculation
Rtrim down =
(
2.16 Vo adj - 0.689 Vo nom - 2) Kohm Vo nom - Vo, adj
Rtrim up =
(
0.689 Vo nom Vo, adj - Vo nom
- 2) Kohm
VRPD-15B18x Trim Resistor Calculation
Rtrim down = (
1.51 Vo adj - 0.668 Vo nom - 1.78) Kohm Vo nom - Vo, adj
Rtrim up =
(
0.668 Vo nom Vo, adj - Vo nom
- 1.78) Kohm
(c)2006 Bel Fuse Inc.
Specifications subject to change without notice. 06.06
Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 * Tel 201-432-0463 * Fax 201-432-9542 * www.belfuse.com page 12
POWER PRODUCTS
BP02V7PD-15B
NON-ISOLATED DC/DC CONVERTERS
5V Input / 1.2V - 3.3V Output / 15A
Output Voltage Set-Point Adjustment
VRPD-15B15x Trim Resistor Calculation
Rtrim down = (
2.06 Vo adj - 1.092 Vo nom - 1.78) Kohm Vo nom - Vo, adj
Rtrim up =
(
1.092 Vo nom Vo, adj - Vo nom
- 1.78) Kohm
VRPD-15B12x Trim Resistor Calculation
Rtrim down = (
1.22 Vo adj - 0.808 Vo nom - 0.825) Kohm Vo nom - Vo, adj
Rtrim up =
(
0.808 Vo nom Vo, adj - Vo nom
- 0.825) Kohm
(c)2006 Bel Fuse Inc.
Specifications subject to change without notice. 06.06
Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 * Tel 201-432-0463 * Fax 201-432-9542 * www.belfuse.com page 13
POWER PRODUCTS
BP06VRPD-15B
NON-ISOLATED DC/DC CONVERTERS
5V Input / 1.2V - 3.3V Output / 15A
Mechanical
VRPD-15B
0.55 [13.97] 0.05 [1.27] 3.00 [76.20]
0.39 [9.91] max 0.063 [1.60]
0.025 [0.64] 0.10 [2.54] 0.65 [16.51] 1.4 [35.56] 0.15 [3.81]
Pin Function +Vo +Vo Remote Sense +Vo Ground Ground +Vin +Vin Not Used Trim Remote On/Off
0.10 [2.54] 0.09 [2.30] max
1 234 5
6 7 8 91011
1 2 3 4
Dimensions are in inches [millimeters]. Standard dimension tolerance is 0.005 [0.13] unless otherwise noted.
5 6 7 8 9 10 11
RoHS Compliance
Complies with the European Directive 2002/95/EC, calling for the elimination of lead and other hazardous substances from electronic products.
(c)2006 Bel Fuse Inc.
Specifications subject to change without notice. 06.06
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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