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
3.0 Vdc - 5.5 Vdc Input 0.75 Vdc - 3.63 Vdc/6 A Output
• Non-Isolated • Under Voltage Lockout (UVLO)
• High Efficiency • OCP/SCP
• High Power Density • Remote On/Off
• Fixed Frequency (300 kHz) • Remote Sense
• Power Good Output Signal • Wide Trim Range
• Can Sink & Source Current • Active High/Low (Options)
• Over Temperature Protection
Description
The Bel xRPB-06F1Ax modules are a series of non-isolated high density open frame dc/dc converters that can
deliver up to 6 A of output current with full load efficiency of 94% at 3.3 Vdc output. These modules provide
precisely regulated voltage programmable via external resistor from 0.75 Vdc to 3.63 Vdc over a wide range of
input voltage (Vin=3.0 Vdc - 5.5 Vdc). Standard features include remote On/Off, programmable output voltage,
over current protection, over thermal shutdown and short circuit protection.
Part Selection
Output
Voltage Input
Voltage
Max.
Output
Current
Max.
Output
Power
Typical
Efficiency
Model
Number
Acti ve High
Model
Number
Active Low
Model
Number
Active Low
0.75 V - 3.63 V 3.0 V - 5.5 V 6 A 22 W 94% VRPB-06F1A0 VRPB-06F1AL VRPB-06F1AW 1
Notes: 1. “W” indicates special coating.
2. Add “G” suffix at the end of the model number listed above to indicate Tray Packaging. Change the first
letter of the model number from “V” to “0” for horizontal mount package.
3. All part numbers above indicate RoHS 6. Change the second letter "R" to "7" for RoHS 5 part numbers.
Absolute Maximum Ratings
Parameter Min Typ Max Notes
Input Voltage (continuous) -0.3 V - 5.8 V
Output Enable Terminal Voltage -0.3 V - 5.5 V
Ambient Temperature -40 °C - 85 °C
Storage Temperature -40 °C - 125 °C
Note: All specifications are typical at 25 °C unless otherwise stated.
Input Specifications
Parameter Min Typ Max Notes
Input Voltage
Vo ≤ 1.8 V
Vo=2.5-3.3 V
3.0 V
4.5 V
-
-
5.5 V
5.5 V
Input Current (full load)
Vo=3.3 V
Vo=2.5 V
Vo=1.8 V
Vo=1.5 V
Vo=1.2 V
Vo=0.75 V
-
-
-
-
-
-
4.21 A
3.26 A
2.43 A
2.07 A
1.69 A
1.14 A
-
-
-
-
-
-
xRPB-06F1Ax RoHS Com
p
liant Rev.A
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
3.0 Vdc - 5.5 Vdc Input 0.75 Vdc - 3.63 Vdc/6 A Output
Input Specifications (continued)
Parameter Min Typ Max Notes
Input Current (no load)
Vo=3.3 V
Vo=0.75 V
-
-
100 mA
50 mA
-
-
Remote Off Input Current - 10 mA -
Input Reflected Ripple Current (pk-pk) - 120 mA -
Input Reflected Ripple Current (rms) - 35 mA -
Tested with simulated source
impedance of 1uH, 5 Hz to 20 MHz.
I2t Inrush Current Transient - - 0.04 A2s
Turn-on Voltage Threshold - 2.7 V 3.0 V
Turn-off Voltage Threshold 1.8 V 2.6 V -
Note: All specifications are typical at 25 °C unless otherwise stated.
Output Specifications
Parameter Min Typ Max Notes
Output Voltage Set Point -2%Vo,set - 2%Vo,set Vin=5 V, 50% full load
Output Voltage Set Point -3%Vo,set - 3%Vo,set
Over all operating input voltages,
resistive loads and temperature
conditions
Adjustment Range 0.7525 V - 3.63 V Selected by external resistor or
voltage
Load Regulation - 0.4%Vo,set - Io=Iomin to 50% Iomax
Line Regulation - 0.3%Vo,set - Vin=Vinmin to Vinmax
Temperature Regulation - 0.4%Vo, set - Tref=Tamin to Tamax
Output Current 0 A - 6 A
Current Limit Threshold 9 A - 18 A
Short Circuit Surge Transient - 0.32 A2s -
Ripple and Noise (pk-pk) - 40 mV 70 mV
Ripple and Noise (rms) - 10 mV 30 mV
Tested with 0-20 MHz, with
external 10 uF Tantalum
capacitor and 1 uF/10 V TDK
ceramic capacitor at the output.
Turn on Time - 6 mS 10 mS
Overshoot at Turn on - - 3%Vo
External Load Capacitance
Min ESR ≥ 1mhom
Max ESR ≥ 10mhom
0 uF
0 uF
1000 uF
3000 uF
Transient Response
50% ~ 100% Max Load - 150 mV -
Settling Time - 25 uS -
100% ~ 50% Max Load - 150 mV -
Settling Time
VO =0.75 V -
3.63 V
- 25 uS -
Test conditions:
di/dt=2.5 A/ uS; Vin=5 V; with
external 10 uF Tantalum
capacitor and 1 uF/10 V TDK
ceramic capacitor at the output.
Note: All specifications are typical at nominal input (Vin=5 V), 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
3.0 Vdc - 5.5 Vdc Input 0.75 Vdc - 3.63 Vdc/6 A Output
General Specifications
Parameter Min Typ Max Notes
Efficiency (Current Source)
Vo=3.3 V
Vo=2.5 V
Vo=1.8 V
Vo=1.5 V
Vo=1.2 V
Vo=0.75 V
-
-
-
-
-
-
94%
92%
89%
87%
85%
79%
-
-
-
-
-
-
Measured at Vin=5 V, full load
Switching Frequency 250 kHz 300 kHz 350 kHz
Output Voltage Trim Range 0.7525 V - 3.63 V
Remote Sense Compensation - - 10%Vo
Over Temperature Shutdown - 125 °C -
MTBF 6,929,838 hours Calculated Per Bell Core SR-332 (IO =
Nominal; Ta = 25 °C)
Dimensions
Inches (L × W × H)
Millimeters
(
L × W × H
)
2.0 x 0.55 x 0.36
50.80 x 13.97 x 9.14
Weight - 7.5 g -
Note: All specifications are typical at 25 °C unless otherwise stated.
Control Specifications
Parameter Min Typ Max Notes
Remote On/Off
Signal Low (Unit Off) -0.2 V - 0.3 V
Signal High (Unit On) - - Vin, max
xRPB-06F1A0; Active High; Remote On/Off
pin open, Unit on.
Signal Low (Unit On) -0.2 V - 0.3 V
Signal High (Unit Off) 1.5 V - Vin, max
xRPB-06F1AL & xRPB-06F1AW; Active Low;
Remote On/Off pin open, Unit on.
Power Good Levels
High Level 2.1 V - -
Low Level - - 1.05 V
Output Trim Equations
Equation for calculating the trim resistor (in kΩ) given the desired adjusted voltage (Vadj) is shown below. The
Trim resistor should be connected between the Trim pin and Ground.
11.5
7525.007.21 −
−
=
adj
Trim V
R
Equation for calculating the trim voltage Vtrim (in V) given the desired adjusted voltage (Vadj) is shown below.
)7525.0(1698.07.0
−
×
−
=adj
VVtrim
Vtrim
Module
Vout
GND
Trim
Rtrim
Module
Vout
GND
Trim
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
3.0 Vdc - 5.5 Vdc Input 0.75 Vdc - 3.63 Vdc/6 A Output
Efficiency Data
3.3V Module
60.0%
65.0%
70.0%
75.0%
80.0%
85.0%
90.0%
95.0%
100.0%
0.6A 1.5A 3.0A 4.5A 6.0A
Output Current
Efficiency
4.5V
5V
5.5
V
2.5V Module
60.0%
65.0%
70.0%
75.0%
80.0%
85.0%
90.0%
95.0%
0.6A 1.5A 3.0A 4.5A 6.0A
Output Current
Efficiency
4.5V
5V
5.5
V
1.8V Module
60.0%
65.0%
70.0%
75.0%
80.0%
85.0%
90.0%
95.0%
0.6A 1.5A 3.0A 4.5A 6.0A
Output Current
Efficiency
3V
5V
5.5V
1.5V Module
60.0%
65.0%
70.0%
75.0%
80.0%
85.0%
90.0%
95.0%
100.0%
0.6A 1.5A 3.0A 4.5A 6.0A
Output Current
Efficiency
3V
5V
5.5
V
1.2V Module
60.0%
65.0%
70.0%
75.0%
80.0%
85.0%
90.0%
95.0%
100.0%
0.6A 1.5A 3.0A 4.5A 6.0A
Output C urrent
Efficiency
3V
5V
5.5V
0.7525V Module
60.0%
65.0%
70.0%
75.0%
80.0%
85.0%
90.0%
95.0%
100.0%
0.6A 1.5A 3.0A 4.5A 6.0A
Output Current
Efficiency
3V
5V
5.5V
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
3.0 Vdc - 5.5 Vdc Input 0.75 Vdc - 3.63 Vdc/6 A Output
Thermal Derating Curves
Vin=5 V, Vo=0.75 V Vin=5 V, Vo=1.8 V
Vin=5 V, Vo=3.3 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
3.0 Vdc - 5.5 Vdc Input 0.75 Vdc - 3.63 Vdc/6 A Output
Ripple and Noise Waveforms
Ripple and noise at full load Vo=0.75 V Ripple and noise at full load Vo=1.2 V
Ripple and noise at full load Vo=1.5 V Ripple and noise at full load Vo=1.8 V
Ripple and noise at full load Vo=2.5 V Ripple and noise at full load Vo=3.3 V
Note: Ripple and Noise at 5.0 Vdc input, 0-20 MHz BW, with a 1 uF/10 V and a 10 uF/10 V tantalum cap at the
output, 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
3.0 Vdc - 5.5 Vdc Input 0.75 Vdc - 3.63 Vdc/6 A Output
Transient Response Waveforms
Transients 50% to 100% load 0.75 Vdc output Transients 100% to 50% load 0.75 Vdc output
Transients 50% to 100% load 1.2 Vdc output Transients 100% to 50% load 1.2 Vdc output
Transients 50% to 100% load 1.5 Vdc output Transients 100% to 50% load 1.5 Vdc output
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
3.0 Vdc - 5.5 Vdc Input 0.75 Vdc - 3.63 Vdc/6 A Output
Transient Response Waveforms (continued)
Transients 50% to 100% load 1.8 Vdc output Transients 100% to 50% load 1.8 Vdc output
Transients 50% to 100% load 2.5 Vdc output Transients 100% to 50% load 2.5 Vdc output
Transients 50% to 100% load 3.3 Vdc output Transients 100% to 50% load 3.3 Vdc output
Note: Transient Response at 5.0 V input, di/dt=2.5 A/uS, with a 10 uF/10 V tantalum cap, a 1 uF/10 V ceramic
cap at the output, 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
3.0 Vdc - 5.5 Vdc Input 0.75 Vdc - 3.63 Vdc/6 A Output
Mechanical Outlines
VRPB-06F1Ax
Pin Connections
Pin Function
1 +Vout
2 +Vout
3 Remote Sense
4 +Vout
5 Ground
6 Ground
7 +Vin
8 +Vin
9 Power Good
10 Trim
11 Remote On/Off
©
2007 Bel Fuse Inc. Specifications subject to change without notice. 013007
CORPORATE FAR EAST EUROPE
Bel Fuse Inc. Bel Fuse Ltd. Bel Fuse Europe Ltd.
206 Van Vorst Street 8F/ 8 Luk Hop Street Preston Technology Management Centre
Jersey City, NJ 07302 San Po Kong Marsh Lane, Suite G7, Preston
Tel 201-432-0463 Kowloon, Hong Kong Lancashire, PR1 8UD, U.K.
Fax 201-432-9542 Tel 852-2328-5515 Tel 44-1772-556601
www.belfuse.com Fax 852-2352-3706 Fax 44-1772-888366
www.belfuse.com www.belfuse.com
NON-ISOLATED DC/DC CONVERTERS
3.0 Vdc - 5.5 Vdc Input 0.75 Vdc - 3.63 Vdc/6 A Output
Mechanical Outlines (continued)
0RPB-06F1Ax
RoHS Compliance
Complies with the European Directive 2002/95/EC, calling for the elimination of lead and
other hazardous substances from electronic products.
Pin Connections
Pin Function
1 +Vout
2 +Vout
3 Sense
4 +Vout
5 Ground
6 Ground
7 +Vin
8 +Vin
9 Power Good
10 Trim
11 Remote On/Off
