ISOLATED DC/DC CONVERTERS
48 VDC Input 11.8 VDC/25 A Output, 1/8 Brick
0RCR-30S12x
•
•
•
•
•
Isolated
Fixed Frequency
High Efficiency
High Power Density
Low Cost
RoHS Compliant
•
•
•
•
•
Rev.E
Input Under-Voltage Lockout
Input Over-Voltage Shutdown
OCP/SCP
Over Temperature Protection
Remote On/Off
Description
The 0RCR-30S12x are isolated DC/DC converters that operate from a nominal 48 VDC source. These
converters use a full bridge power train to provide isolation and step down. These units will provide up to 300 W
of output power from a nominal 48 VDC input. These units are designed to be highly efficient and low cost.
Features include remote on/off, over current protection and under voltage lockout. These converters are provided
in an industry standard eighth-brick package.
Part Selection
Output
Voltage
11.8 V
Input
Voltage
48 V
Max. Output
Current
25 A
Max. Output
Power
300 W
Typical
Efficiency
96%
Model Number
Active Low
0RCR-3012L
Model Number
Active High
0RCR-30S120
Notes:
1. Add “G” suffix at the end of the model number to indicate Tray Packaging.
2. All part numbers above indicate RoHS 6. Change the second letter "R" to "7" for RoHS 5 part numbers.
Absolute Maximum Ratings
Parameter
Input Voltage (continuous)
Remote On/Off (Active Low)
Remote On/Off (Active High)
Ambient Temperature
Storage Temperature
Min
-0.3 V
-0.3 V
2V
0V
2V
0V
-40
°C
-55
°C
Typ
-
-
-
-
-
-
-
-
Max
80 V
57 V
20 V
0.4 V
20 V
0.4 V
85
°C
125
°C
Notes
Non-operating
Operating
Module Off
Module On
Module On
Module Off
Input Specifications
Parameter
Input Voltage
Input Current (full load)
Input Current (no load)
Remote Off Input Current
Input Reflected Ripple Current (pk-pk)
Input Reflected Ripple Current (rms)
I
2
t Inrush Current Transient
Min
38 V
-
-
-
-
-
-
Typ
-
-
90 mA
8 mA
25 mA
5 mA
TBD
Max
55 V
8.5 A
150 mA
15 mA
50 mA
10 mA
-
Tested with simulated source
impedance of 12 uH, 5 Hz to 20 MHz;
use a 100 uF/100 V electrolytic
capacitor and 1 uF/100 V ceramic
capacitor at the input.
Vin=38 V
Notes
Bel Fuse Inc.
206 Van Vorst Street, Jersey City, NJ 07302
•
Tel 201-432-0463
•
Fax 201-432-9542
•
www.belfuse.com
ISOLATED DC/DC CONVERTERS
48 VDC Input 11.8 VDC/25 A Output, 1/8 Brick
Input Specifications (continued)
Parameter
Input Over-Voltage Protection Threshold
Turn On Voltage Threshold
Turn Off Voltage Threshold
Min
58 V
57 V
33 V
32 V
Typ
60 V
59 V
35 V
33.5 V
Max
62 V
61 V
36.5 V
35 V
Notes
Turn-Off Voltage Threshold
Turn-On Voltage Threshold
Note:
All specifications are typical at 25
°C
unless otherwise stated.
Output Specifications
Parameter
Output Voltage Set Point
Vin=38 V
Vin=48 V
Vin=55 V
Load Regulation
Output Current
Operating Output Power Range
Current Limit Threshold
Short Circuit Surge Transient
Ripple and Noise (rms)
Ripple and Noise (pk-pk)
Turn on Time
Overshoot at Turn on
Output Capacitance
Transient Response
50% ~ 75%
Max Load
75% ~ 50%
Max Load
Overshoot
Settling Time
Overshoot
Settling Time
Vin=48 V
-
-
-
-
-
-
-
-
200 mV
100 uS
200 mV
100 uS
Test conditions: di/dt = 0.1 A/uS,
Vin=48 V, with a 1 uF ceramic
cap and a 47 uF tantalum cap at
the output.
Min
-
-
-
-
0A
0W
110%Po
-
-
-
-
-
0 uF
Typ
9.4 V
11.8 V
13.5 V
400 mV
-
-
-
TBD
15 mV
50 mV
15 mS
-
-
Max
-
-
-
600 mV
25 A
300 W
165%Po
-
50 mV
120 mV
20 mS
5%
3300 uF
Test conditions:
0-20 MHz BW, with a 1 uF ceramic
cap and a 47 uF tantalum cap at
the output.
lo=no load
Notes
Vin=48 V
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
ISOLATED DC/DC CONVERTERS
48 VDC Input 11.8 VDC/25 A Output, 1/8 Brick
General Specifications
Parameter
Efficiency
Switching Frequency
Isolation Capacitance
Isolation Voltage
Over Temperature Protection
MTBF
Dimensions
Inches (L
×
W
×
H)
Millimeters (L
×
W
×
H)
Weight
-
2.30 x 0.896 x 0.50
58.41 x 22.76 x 12.7
42 g
Min
95%
-
-
-
-
Typ
96%
250 kHz
3900 pF
1500 V
125
°C
TBD
Max
-
-
-
-
-
Calculated Per Bell Core SR-332
(Vin=48 V; I
O
=80% full load; T
a
= 25
°C)
Notes
Vin=48 V, full load, 25°C
-
Note:
All specifications are typical at 25
°C
unless otherwise stated.
Control Specifications
Parameter
Remote On/Off
Signal High (Unit Off)
Signal Low (Unit On)
Signal High (Unit On)
Active High
Signal Low (Unit Off)
0V
-
0.4 V
Active Low
2V
0V
2V
-
-
-
20 V
0.4 V
20 V
The remote on/off pin is open: If
active low, the Unit Off; If active
high, the Unit On.
Min
Typ
Max
Notes
Bel Fuse Inc.
206 Van Vorst Street, Jersey City, NJ 07302
•
Tel 201-432-0463
•
Fax 201-432-9542
•
www.belfuse.com
ISOLATED DC/DC CONVERTERS
48 VDC Input 11.8 VDC/25 A Output, 1/8 Brick
Efficiency Data
99.0%
98.0%
97.0%
Efficiency
96.0%
95.0%
94.0%
93.0%
92.0%
91.0%
90.0%
3.2
6.4
9.6
12.8
16
19.2
22.4
25.6
28.8
32
38 V
48 V
55V
Output current
Thermal Derating Curve
This derating curve is tested when Vin=48 Vdc
Bel Fuse Inc.
206 Van Vorst Street, Jersey City, NJ 07302
•
Tel 201-432-0463
•
Fax 201-432-9542
•
www.belfuse.com
ISOLATED DC/DC CONVERTERS
48 VDC Input 11.8 VDC/25 A Output, 1/8 Brick
Ripple and Noise Waveforms
38 Vdc input
48Vdc input
55 Vdc input
Note:
Ripple and noise at full load, with 1 uF ceramic cap and 47 uF Tan cap 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
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