BEL 0RCY

ISOLATED DC/DC CONVERTERS
36 Vdc - 75 Vdc Input
0RCY-50T12x
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12 Vdc /6 A Output
RoHS Compliant
Isolated
High Efficiency
High Power Density
Fixed Frequency (330 kHz)
Input Under-Voltage Lockout
Pre-bias Start Up
UL60950-1 Recognized (UL/cUL)
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Rev.D
Output Over-Voltage Shutdown
OCP/SCP
Over Temperature Protection
Low Cost
Output Voltage Trim
Positive/Negative Remote Sense
Basic Insulation
Remote On/Off
Description
The 0RCY-50T12x is isolated dc/dc converter that operates from a wide input range (36 Vdc - 75 Vdc). This unit
will provide up to 72 W of output power. The unit is designed to be highly efficient and low cost. Features include
remote on/off, over current protection, over voltage shut down, over temperature protection and under-voltage
lockout. This converter is provided in an industry standard 1/8 brick package.
Part Selection
Output
Voltage
12 Vdc
Input Voltage
36 Vdc - 75 Vdc
Max. Output
Current
6A
Max. Output
Power
72 W
Typical
Efficiency
92%
Model Number
Active Low
0RCY-50T12L
Model Number
Active High
0RCY-50T120
Notes: 1. All part numbers above indicate RoHS 6. Change the second letter "R" to "7" for RoHS 5 part numbers.
2. Add “G” suffix at the end of the model number to indicate Tray Packaging.
Absolute Maximum Ratings
Min
Typ
Max
Input Voltage (continuous)
Parameter
-0.3 V
-
80 V
Remote On/Off
-0.3 V
-
18 V
-
-
1500 V
10M ohm
-
-
Ambient Temperature
-40 °C
-
85 °C
Storage Temperature
-55 °C
-
125 °C
I/O Isolation Voltage
Input to Each Output Resistance
Notes
Input Specifications
Parameter
Input Voltage
Min
36 V
Typ
48 V
Max
75 V
Max Input Current (full load)
-
-
2.4 A
Input Current (no load)
-
50 mA
100 mA
Remote Off Input Current
-
20 mA
30 mA
Input Reflected Ripple Current
(pk-pk)
-
20 mA
30 mA
I2t Inrush Current Transient
-
-
0.1 A2s
Input Fuse (not internally)
-
-
5A
Notes
Tested with simulated source impedance
of 10 uH, 5 Hz to 20 MHz; use a 47
uF/100 V electrolytic cap with ESR = 1
ohm max. at 200 kHz at 25 °C.
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
36 Vdc - 75 Vdc Input
12 Vdc /6 A Output
Input Specifications (continued)
Parameter
Turn-on Voltage Threshold
Turn-off Voltage Threshold
Input Over Voltage Lockout
Min
33 V
31 V
76 V
Typ
34 V
32 V
78 V
Max
35 V
33 V
80 V
Notes
Note: All specifications are typical at 25 °C unless otherwise stated.
Output Specifications
Parameter
Output Voltage Set Point
Min
11.76 V
Typ
12.0 V
Max
12.24 V
Load Regulation
-
±12 mV
±24 mV
line Regulation
Regulation Over Temperature
(-40deg.C-85deg.C)
-
±12 mV
±24 mV
-
±80 mV
±120 mV
Ripple and Noise (rms)
-
12 mV
20 mV
Ripple and Noise (pk-pk)
-
50 mV
80 mV
0A
-
6A
Output DC Current Limit
7.0 A
-
10 A
Output Over Voltage Clamp
13.6 V
-
15.6 V
-
50 mS
80 mS
-
30 mS
40 mS
0 uF
-
1000 uF
Output Current Range
Turn on Time
Rise Time
External Admissible Capacitive Load
Notes
Vin=72V, max load on output, 20MHz
BW, with 10uF tantalum and 1uF
ceramic cap at the output.
Non-latching
Transient Response
50% ~ 75% ~ 50% of Max Load
-
200 mV
300 mV
Settling Time
-
150 mV
250 mV
di/dt=0.1 A/us, Vin=48 Vdc, Ta=25 °C,
with a 1 µF ceramic cap and a 10 uF
tantalum cap at output.
Note: All specifications are typical at 25 °C unless otherwise stated.
General Specifications
Parameter
Min
90%
Typ
92%
Max
-
Switching Frequency
310 kHz
330 kHz
350 kHz
Isolation capacitance
-
1500 pF
-
Remote Sense Compensation
-
-
10%
9.6 V
-
13.2 V
-
120 °C
-
Efficiency
Output Voltage Trim Range
Over Temperature Protection
MTBF
Notes
Measured at Vin=48 V, full load.
The total voltage increased by trim and
remote sense should not exceed 10%Vo.
Calculated Per Bell Core SR-332
(Io=80%load, Ta = 25 °C)
TBD
Dimensions
Inches (L × W × H)
Millimeters (L × W × H)
Weight
2.30 x 0.896 x 0.490
58.41 x 22.76 x 12.44
-
40 g
-
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
36 Vdc - 75 Vdc Input
12 Vdc /6 A Output
Control Specifications
Parameter
Remote On/Off
Signal Low (Unit On)
Signal High (Unit Off)
Signal Low (Unit Off)
Signal High (Unit On)
Active Low
Active High
Min
Typ
Max
-0.3 V
-
0.8 V
2.4 V
-
18 V
-0.3 V
-
0.8 V
2.4 V
-
18 V
0 mA
-
1 mA
Current Sink
Notes
0RCY-50T12L. The remote
on/off pin open, Unit off.
0RCY-50T120. The remote
on/off pin open, Unit on.
Output Trim Equations
Equations for calculating the trim resistor are shown below. The Trim Down resistor should be connected between
the Trim pin and Sense(-) pin. The Trim Up resistor should be connected between the Trim pin and the Sense(+)
pin. Only one of the resistors should be used for any given application.
Sense(+)
Rtrimdown =
511
− 10.22[kΩ]
delta
Module
Trim
Rtrimdown
Sense(-)
(100 + delta ) ⋅ Vo ⋅ 5.11 511
Rtrimup = (
−
− 10.22)[kΩ]
1.225 ⋅ delta
delta
Sense(+)
Rtrimup
Module
Trim
Sense(-)
Note:
delta =
(Vo _ req − Vo ) × 100 [% ]
Vo
Vo_req=Desired (trimmed) output voltage [V]
Output voltage Vo=12 V
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
36 Vdc - 75 Vdc Input
12 Vdc /6 A Output
Efficiency Data
Efficient Curve
90%
80%
70%
Efficien
60%
50%
40%
30%
20%
36 V
10%
48 V
75 V
0%
0A
0.6A
1.5A
3A
Output Current (A)
4.5A
6A
Thermal Derating Curve
Vin=48 V, with maximum junction temperature of semiconductors derated to 120 degree C.
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
36 Vdc - 75 Vdc Input
12 Vdc /6 A Output
Ripple and Noise Waveforms
36 Vdc input, 12 Vdc/6 A output
48 Vdc input, 12 Vdc/6 A output
75 Vdc input, 12 Vdc/6 A output
Note: Ripple and noise at full load, 0-20 MHz BW, Ta=25 deg C, with a 0.1uF ceramic cap and a 10 uF Tantalum
cap at output.
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
36 Vdc - 75 Vdc Input
12 Vdc /6 A Output
Transient Response Waveforms
50%-75% Load Transients at Vin=48 V, di/dt=0.1 [email protected]=25℃
75%-50% Load Transients at Vin=48 V, di/dt=0.1 [email protected]=25℃
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
36 Vdc - 75 Vdc Input
12 Vdc /6 A Output
Mechanical Outline
Pin Connections
Pin
Name
Function
Pin Dia
1
Vin+
0.040’’
2
On/Off
3
4
5
6
7
8
VinVoutSenseTrim
Sense+
Vout+
Positive input voltage
Input to turn converter
on and off, referenced
to VinNegative input voltage
Negative output voltage
Negative remote sense
Output voltage trim
Positive output voltage
Positive output voltage
0.040’’
0.040’’
0.062’’
0.040’’
0.040’’
0.040’’
0.062’’
Notes: 1. Pin 5 must be connected to Vout-.
2. Leave Pin 6 open for nominal voltage.
3. Pin 7 must be connected to Vout+.
RoHS Compliance
Complies with the European Directive 2002/95/EC, calling for the elimination of lead and
other hazardous substances from electronic products.
©2008 Bel Fuse Inc. Specifications subject to change without notice. 090308
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