BEL 0RPF

NON-ISOLATED DC/DC CONVERTERS
12 V Input
0.9 V-5.0 V/20 A Output
RoHS Compliant
xRPF-20A1A0
•
Non-Isolated
•
Wide Trim Range
•
Fixed Frequency (275 kHz)
•
•
High Efficiency
Converter Can Sink and Source
Current
•
High Power Density
•
OCP/SCP
•
Power Good Output Signal (open
collector)
•
Remote On/Off
•
Low Cost
•
Under-Voltage Lockout (UVLO)
Description
The Bel xRPF-20A1A0 is a new high density open frame non-isolated converter series for space sensitive
applications. Each model has a wide input range (10.2V-13.8V) and offers a wide range of output voltage (0.9 V
- 5.0 V) with a 20 A load. An external resistor adjusts the output voltage from its pre-set value of 0.9 V to any
value up to the 5.0 V maximum. Typical efficiency is 92% at Vo=5 V, Vin=12 V at full load. Typical features
include remote on/off, under-voltage lockout, over-current protection and short circuit protection.
Part Selection
Output
Voltage
0.9 V - 5.0 V
Input
Voltage
12 V
Max. Output
Current
20 A
Max. Output
Power
100 W
Typical
Efficiency
92%
Model Number
Vertical Mount
VRPF-20A1A0
Model Number
Horizontal Mount
0RPF-20A1A0
Note: Add “G” suffix at the end of the model number to indicate Tray Packaging.
Absolute Maximum Ratings
Parameter
Input Voltage (continuous)
Min
-0.3 V
Typ
-
Max
13.8 V
Output Enable Terminal Voltage
-0.3 V
-
13.8 V
Ambient Temperature
0 °C
-
80 °C
Storage Temperature
-40 °C
-
125 °C
Notes
Input Specifications
Parameter
Input Voltage
Input Current (Source)
Min
10.2 V
Typ
-
Max
13.8 V
Vo=5.0 V
Vo=2.5 V
Vo=0.9 V
-
9.1 A
4.9 A
2.2 A
-
Vo=2.5 V
Vo=0.9 V
-
-3.44 A
-0.97 A
-
Input Current (No Load)
-
95 mA
-
Remote Off Input Current
-
5 mA
10 mA
Input Current (Sink)
Notes
Able to sink 20 A output current at any
output voltage up to and including 2.5 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
12 V Input
0.9 V-5.0 V/20 A Output
Input Specifications (continued)
Parameter
Input Reflected Ripple Current (pk-pk)
Vo=5.0 V
Vo=3.3 V
Vo=2.5 V
Vo=0.9 V
Input Reflected Ripple Current (rms)
Vo=5.0 V
Vo=3.3 V
Vo=2.5 V
Vo=0.9 V
External Input Capacitance
Turn-on Voltage Threshold
Turn-off Voltage Threshold
Min
Typ
Max
-
280 mA
250 mA
200 mA
150 mA
350 mA
320 mA
280 mA
250 mA
80 mA
70 mA
45 mA
40 mA
540 uF
9.0 V
7.6 V
120 mA
100 mA
80 mA
60 mA
9.5 V
8.3 V
8.5 V
7.0 V
Notes
Tested with simulated source
impedance of 1.5 uH 5Hz to 20 MHz,
and 2 × 270 uF/16 V Oscon
capacitors (ESR ≤ 20 mΩ) at the
input
Note: All specifications are typical at 25 °C unless otherwise stated.
Output Specifications
Parameter
Output Voltage Set Point
Min
-2.5%Vo,set
Typ
-
Max
2.5%Vo,set
Output Voltage Set Point
-3.5%Vo,set
-
3.5%Vo,set
-
-
0.4%Vo,set
0.4%Vo,set
0.5%Vo,set
1%Vo,set
-
-
0.5%Vo,set
-
65 mV
60 mV
55 mV
45 mV
80 mV
75 mV
70 mV
55 mV
0A
25 A
-
18 mV
15 mV
15 mV
10 mV
5 mS
0%Vo
25 mV
25 mV
20 mV
15 mV
20 A
40 A
0.1 A2s
10 mS
3%Vo
680 uF
680 uF
680 uF
-
5080 uF
7840 uF
11000 uF
Notes
Vin=12 V, lo=lomax, full load
Over all operating input voltage, resistive
load, and temperature conditions
Load Regulation
Vo=5.0 V
Vo=3.3 V
Vo=2.5 V
Vo=0.9 V
Line Regulation
Output Ripple and Noise (pk-pk)
Vo=5.0 V
Vo=3.3 V
Vo=2.5 V
Vo=0.9 V
Output Ripple and Noise (rms)
Vo=5.0 V
Vo=3.3 V
Vo=2.5 V
Vo=0.9 V
Output Current
Current Limit Threshold
Short Circuit Surge Transient
Turn on Time
Overshoot at Turn on
Output Capacitance
Vo=5.0 V
Vo=2.5 V
Vo=0.9 V
Transient Response
50% ~ 75% Max Load
Settling Time VO=0.9 V5.0 V
75% ~ 50% Max Load
Settling Time
-
100 mV
40 uS
100 mV
40 uS
150 mV
80 uS
150 mV
80 uS
Io=Iomin to Iomax
Vin=Vinmin to Vinmax
Tested at 0-20 MHz BW, with a
680 uF/6.3 V Oscon capacitor (ESR ≤ 12
mΩ), 10uF/16V Tantalum capacitor, and
10nF ceramic capacitor at the output.
Test conditions:
di/dt=2.5 A/uS; Vin=12 V; with a 680 uF/6.3
V Oscon capacitor (ESR ≤ 12 mΩ),
10 uF/16 V Tantalum capacitor, and 10 nF
ceramic 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 CONVERTERS
12 V Input
0.9 V-5.0 V/20 A Output
General Specifications
Parameter
Efficiency (Current Source)
Vo=5.0 V
Vo=3.3 V
Vo=2.5 V
Vo=0.9 V
Efficiency (Current Sink)
Vo=2.5 V
Vo=0.9 V
Switching Frequency
Output Voltage Trim Range
Min
Typ
Max
89%
86%
83%
65%
92%
89%
86%
69%
-
79%
60%
240 kHz
0.9 V
82%
63%
275 kHz
-
310 kHz
5.0 V
MTBF
5,570,000 hours
Dimensions
Inches (L × W × H)
Millimeters (L × W × H)
Dimensions
Inches (L × W × H)
Millimeters (L × W × H)
Weight
-
Notes
Measured at Vin=12 V, full load.
Vo=0.9 V when the Trim pin is open.
Calculated Per Bell Core SR-332 (IO =
Nominal; Ta = 25 °C)
1.2 x 1.1 x 0.457
30.48 x 27.94 x 11.6
VRPF-20A1A0
1.2 x 1.1 x 0.508
30.48 x 27.94 x 12.91
15 g
0RPF-20A1A0
-
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
Min
Typ
Max
-0.3 V
2.4 V
-
0.8 V
13.8 V
-
-
8 mS
1
Notes
Remote On/Off pin open, unit on.
Note: All specifications are typical at 25 °C unless otherwise stated.
1. 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.
Output Trim Equations
Equation for calculating the trim resistor (in kΩ) given the desired adjusted voltage (Vadj) is shown below. The
Trim Up resistor should be connected between the Trim pin and Ground. Trim values should not be less than
280Ω.
Rtrim =
1.17
Vadj − 0.9
Vout
Module Trim
Rtrim
GND
Equation for calculating the trim voltage (in V) given the desired adjusted voltage (Vadj) is shown below. The
Trim Up voltage should be connected between the Trim pin and Ground.
Vout
Rs × (1.3Vt − 1.17 )
Rt =
1.17 − Rs × (Vadj − 0.9 )
Module
Rt
Trim
Rs
GND
Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 • Tel 201-432-0463 • Fax 201-432-9542 • www.belfuse.com
Vt
NON-ISOLATED DC/DC CONVERTERS
12 V Input
0.9 V-5.0 V/20 A Output
Efficiency Data
5.0V Vout(SOURCE)
Efficiency
93.0%
90.0%
10.2V
12.0V
13.8V
87.0%
84.0%
81.0%
78.0%
2.0
5.0
10.0
15.0
20.0
Output Current (A)
2.5V Vout(SOURCE)
91.0%
Efficiency
88.0%
85.0%
10.2V
12.0V
13.8V
82.0%
79.0%
76.0%
73.0%
2.0
5.0
10.0
Output Current (A)
15.0
20.0
0.9V Vout(SOURCE)
85.0%
80.0%
Efficiency
75.0%
70.0%
65.0%
10.2V
12.0V
13.8V
60.0%
55.0%
50.0%
2.0
5.0
10.0
Output Current (A)
15.0
20.0
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
12 V Input
0.9 V-5.0 V/20 A Output
Thermal Derating Curves
Vo=5 V; Vin=12 V
Vo=2.5 V; Vin=12 V
Vo=0.9 V; Vin=12 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
12 V Input
0.9 V-5.0 V/20 A Output
VRPF-20A1A0
Pin Connections
Pin
1
2
3
4
5
6
7
8
9
10
11
Function
Vout
Vout
Vout
Trim
Remote On/Off
Power Good
Ground
Ground
Reserved
Vin
Vin
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
12 V Input
0.9 V-5.0 V/20 A Output
0RPF-20A1A0
Pin Connections
Pin
1
2
3
4
5
6
7
8
9
10
11
12
13
Function
Vout
Vout
Vout
Trim
Remote On/Off
Power Good
Ground
Ground
Pwrgd_set
Vin
Vin
Support Pin
Support Pin
RoHS Compliance
Complies with the European Directive 2002/95/EC, calling for the elimination of lead and
other hazardous substances from electronic products.
©2005 Bel Fuse Inc. Specifications subject to change without notice. 082405
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