ISOLATED DC/DC CONVERTERS
24 Vdc Input
Sep. 11, 2010
12 Vdc /20 A Output
Bel Power Inc., a subsidiary of Bel Fuse Inc.
RoHS Compliant
Rev.D
0RQB-T0R12x
Features
•
•
•
•
•
•
•
•
•
Isolated
•
•
•
•
•
•
Output Over Voltage Shutdown
Over Temperature Protection
SCP/OCP
Remote On/Off
Basic Isolation
Baseplate
Fixed Frequency (307 kHz)
High Efficiency
High Power Density
Input Under Voltage Lockout
Input Over Voltage Lockout
Low Cost
Class 1, Category 2, Isolated DC/DC Converter (refer to IPC-9592)
UL60950-1 Recognized (UL/cUL) (Pending)
Applications
•
•
•
Networking
Computers and peripherals
Telecommunications
Description
The 0RQB-T0R12x is isolated dc/dc converter that operates from a nominal 24 Vdc source. This unit will provide
up to 240 W output power from a nominal 24 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. This converter is
provided in an industry standard quarter brick package.
Part Selection
Output
Voltage
12 Vdc
Input Voltage
18 Vdc - 36 Vdc
Max. Output
Current
20 A
Max. Output
Power
240 W
Typical
Efficiency
94.5%
Model Number
Active High
0RQB-T0R120
Model Number
Active Low
0RQB-T0R12L
Notes:
Add “G” suffix at the end of the model number to indicate Tray Packaging.
Part Number Explanation
0 R QB – T0 R 12 x
1 2
3
4
5
6 7
1---Through hole
2---RoHS 6, change “R” to “7” means RoHS 5
3---Series name, 1/4 Brick
4---Series code
5---Input range 24V wide (18-36V)
6---Output voltage (12V)
7---Suffix
Bel Fuse Inc.
206 Van Vorst Street, Jersey City, NJ 07302
•
Tel 201-432-0463
•
Fax 201-432-9542
•
www.belfuse.com
1
ISOLATED DC/DC CONVERTERS
24 Vdc Input
Sep. 11, 2010
12 Vdc /20 A Output
Bel Power Inc., a subsidiary of Bel Fuse Inc.
Min
-0.3
-
-0.3
-
-40
-55
Typ
-
-
-
-
-
-
Max
40
50
18
1500
85
125
Unit
V
V
V
V
°C
°C
non-operating
100 mS maximum
Notes
Absolute Maximum Ratings
Parameter
Continuous Input Voltage
Input Transient Voltage
Remote On/Off
I/O Isolation Voltage
Ambient Temperature
Storage Temperature
Note:
Ratings used beyond the maximum ratings may cause a reliability degradation of the converter or may
permanently damage the device.
Input Specifications
Parameter
Operating Input Voltage
Input Current (full load)
Input Current (no load)
Remote Off Input Current
Input Reflected Ripple Current
(rms)
Input Reflected Ripple Current
(pk-pk)
I t Inrush Current Transient
Turn-on Voltage Threshold
Turn-off Voltage Threshold
2
Min
18
-
-
-
-
-
-
16.0
15.5
Typ
24
-
180
5
5
15
0.05
16.8
16.5
Max
36
15.0
200
10
8
25
0.1
17.5
17.0
Unit
V
A
mA
mA
mA
mA
As
V
V
2
Notes
Tested with simulated source
impedance of 10 uH, 5 Hz to 20 MHz;
use a 100 uF/100 V electrolytic
capacitor with ESR = 1 ohm max. at
200 kHz at 25
°C.
CAUTION: This converter is not internally fused. An input line fuse must be used in application.
Recommend a fast-acting fuse with maximum rating of 25A on system board. Refer to the fuse
manufacture’s datasheet for further information.
Notes:
1. This converter has internal C-L-C (23.5uF) filter.
2. All specifications are typical at 25
°C
unless otherwise stated.
Output Specifications
Parameter
Output Voltage Set Point
Load Regulation
Line Regulation
Regulation Over Temperature
(-40deg.C-85deg.C)
Ripple and Noise (pk-pk)
Ripple and Noise (rms)
Ripple and Noise (pk-pk)
under worst case
Min
11.76
-
-
-
-
-
-
Typ
12
±20
±10
±100
100
25
-
Max
12.24
±30
±15
±200
120
40
150
Unit
V
mV
mV
mV
mV
mV
mV
Vin=24V, full load, 0-20MHz BW, with a
1µF ceramic capacitor and a 10uF
Tantalum cap at output.
over all operating input voltage, load
and temperature conditions.
Notes
Vin=24V, Io=50% load
Bel Fuse Inc.
206 Van Vorst Street, Jersey City, NJ 07302
•
Tel 201-432-0463
•
Fax 201-432-9542
•
www.belfuse.com
2
ISOLATED DC/DC CONVERTERS
24 Vdc Input
Sep. 11, 2010
12 Vdc /20 A Output
Bel Power Inc., a subsidiary of Bel Fuse Inc.
Min
0
22
-
8
Typ
-
26
-
-
25
-
-
0
Overshoot
Settling Time
Overshoot
Settling Time
-
-
-
-
25
0
-
300
120
300
120
Max
20
30
5
12
35
35
3
5000
400
200
400
200
Unit
A
A
As
ms
mS
mS
%
uF
mV
uS
mV
uS
di/dt=0.1A/us, Vin=24Vdc, Ta=25°C,
with a 1µF ceramic capacitor and a
10uF Tantalum cap at the output.
Enable form Vin
Enable form ON/OFF
2
Output Specifications (continued)
Parameter
Output Current Range
Output DC Current Limit
Short Circuit Surge Transient
Rise time
Turn on Time
Overshoot at Turn on
Output Capacitance
Transient Response
△
V50%~75% of
Notes
Max Load
△
V75%~50% of
Max Load
Note:
All specifications are typical at nominal input, full load at 25°C unless otherwise stated.
General Specifications
Parameter
Efficiency
Switching Frequency
Over Temperature Protection
Over Voltage Protection(Static)
Weight
FIT
Dimensions
Inches (L
×
W
×
H)
Millimeters (L
×
W
×
H)
Isolation characteristics
Input to Output
Input to Case
Output to Case
Isolation Resistance
Isolation Capacitance
-
-
-
10M
-
-
-
-
-
3900
-
1500
1500
500
V
V
V
ohm
pF
2.30 x 1.45 x 0.50
58.42 x 36.83 x 12.70
-
Min
94
-
-
-
-
Typ
94.5
307
125
14.15
75
362.8
Max
-
-
130
14.5
-
Unit
%
kHz
°C
V
g
-
Calculated Per Bell Core SR-332
(Vin=24 V, Vo=12 V, Io=7 A,
Ta = 25°C, FIT=109/MTBF)
This voltage is achieved by trimming
up output slowly
Notes
Vin=24V, full load
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
3
ISOLATED DC/DC CONVERTERS
24 Vdc Input
Sep. 11, 2010
12 Vdc /20 A Output
Bel Power Inc., a subsidiary of Bel Fuse Inc.
Thermal Derating Curve
Derating curve under normal input
Derating curve under worse case input
Temperature reference points on top side
Temperature reference points on bottom side
Bel Fuse Inc.
206 Van Vorst Street, Jersey City, NJ 07302
•
Tel 201-432-0463
•
Fax 201-432-9542
•
www.belfuse.com
4
ISOLATED DC/DC CONVERTERS
24 Vdc Input
Sep. 11, 2010
12 Vdc /20 A Output
Bel Power Inc., a subsidiary of Bel Fuse Inc.
Ripple and Noise Waveform
24Vdc input, 12Vdc/20A
Note:
Ripple and noise at full load, and with a 1uF ceramic cap and a 10 uF Tantalum cap at output and Ta=25
deg C.
Transient Response Waveforms
Vout= 12V 50%-75% Load Transients
Vout= 12V 75%-50% Load Transients
Note:
Transient Response at di/dt=0.1A/uS, Vin=24V, with 1uF ceramic cap and 10uF aluminum cap at 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
5
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