BEL 0RCY

ISOLATED DC/DC CONVERTERS
48 Vdc Input 1.2 Vdc - 3.3 Vdc/15 A, 5 Vdc/12 A, 12 Vdc/5 A Output, 1/8 Brick
Bel Power, Inc. , a subsidiary of Bel Fuse, Inc.
Nov. 22, 2010
0RCY-60T
Series
RoHS Compliant
Rev.B
Features

Isolated
High Efficiency


Output Over Voltage Shutdown
OCP/SCP


High Power Density

Over Temperature Protection

Fixed Frequency (300 KHz)

Remote On/Off Logic (Optional)

Low Cost

Positive/Negative Remote Sence

Input Under Voltage Lockout

Basic Isolation

Output Voltage Trim

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 0RCY-60T series are isolated dc/dc converters that operate from a nominal 48 Vdc source. These units will
provide up to 60 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, short circuit protection, over current protection, over temperature
protection, input under voltage lockout, and output over voltage protection. These converters are provided in an
industry standard eighth brick package.
Part Selection
Output Voltage
Input Voltage
36 Vdc - 75 Vdc
Max. Output
Current
5A
Max. Output
Power
60.0 W
Typical
Efficiency
91%
Model Number
Active High
0RCY-60T120
Model Number
Active Low
0RCY-60T12L
12.0 Vdc
5.0 Vdc
36 Vdc - 75 Vdc
12 A
60.0 W
91%
0RCY-60T050
0RCY-60T05L
3.3 Vdc
36 Vdc - 75 Vdc
15 A
50.0 W
89%
0RCY-60T033
0RCY-60T03L
2.5 Vdc
36 Vdc - 75 Vdc
15 A
37.5 W
87%
0RCY-60T025
0RCY-60T02L
1.8 Vdc
36 Vdc - 75 Vdc
15 A
27 W
85%
0RCY-60TV80
0RCY-60TV8L
1.5 Vdc
36 Vdc - 75 Vdc
15 A
22.5 W
84%
0RCY-60TV50
0RCY-60TV5L
1.2 Vdc
36 Vdc - 75 Vdc
15 A
18 W
82%
0RCY-60TV20
0RCY-60TV2L
Notes: Add “G” suffix at the end of the model number to indicate Tray Packaging.
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 1.2 Vdc - 3.3 Vdc/15 A, 5 Vdc/12 A, 12 Vdc/5 A Output, 1/8 Brick
Bel Power, Inc. , a subsidiary of Bel Fuse, Inc.
Nov. 22, 2010
Part Number Explanation
0 R CY – 60 T xx x
1 2
3
4
5
6 7
1---Through hole mount
2---RoHS 6, change “R” to “7” means RoHS 5
3---Series name
4---Series code
5---Input range (36-75V)
6---Output voltage
7---Enable, “0” means active high, and “L” means active low
Absolute Maximum Ratings
Min
Typ
Max
Unit
Input Voltage (continuous)
-0.3
-
80
V
Input Voltage Transient (100 ms)
-0.3
-
100
V
Remote On/Off
-2
-
18
V
I/O isolation voltage
-
-
2000
V
Ambient Temperature
-40
-
85
C
Storage Temperature
-55
-
125
C
Parameter
Notes
Note: Ratings used beyond the maximum ratings may cause a reliability degradation of the converter or may
permanently damage the device.
Input Specifications
Parameter
Input Voltage
Input Current (full load)
Min
36
Typ
48
Max
75
Unit
V
Vo=12.0 V
Vo=5.0 V
Vo=3.3 V
Vo=2.5 V
Vo=1.8 V
Vo=1.5 V
Vo=1.2 V
-
-
3.0
2.8
2.6
2.0
1.4
1.2
0.9
A
A
A
A
A
A
A
Vo=12.0 V
Vo=5.0 V
Vo=3.3 V
Vo=2.5 V
Vo=1.2 V - 1.8 V
-
90
55
45
40
30
130
75
70
70
60
mA
mA
mA
mA
mA
Remote Off Input Current
-
2
5
mA
Input Reflected Ripple Current
(rms)
-
4
10
mA
Input Reflected Ripple Current
(pk-pk)
-
20
40
mA
I t Inrush Current Transient
-
0.01
0.02
As
Turn-on Voltage Threshold
32
34
35
V
Turn-off Voltage Threshold
30
32
34
V
Notes
Input Current (no load)
2
With simulated source impedance of
10 uH; a 100uF/100V electrolytic
capacitor with ESR = 1 ohm max.
5 Hz to 20 MHz
2
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 1.2 Vdc - 3.3 Vdc/15 A, 5 Vdc/12 A, 12 Vdc/5 A Output, 1/8 Brick
Bel Power, Inc. , a subsidiary of Bel Fuse, Inc.
Nov. 22, 2010
Output Specifications
Parameter
Output Voltage Set Point
VO=12.0 V
VO=5.0 V
Vo=3.3 V
VO=2.5 V
VO=1.8 V
Vo=1.5 V
Vo=1.2 V
Min
Typ
Max
Unit
11.760
4.925
3.250
2.463
1.773
1.478
1.182
12.0
5.0
3.3
2.5
1.8
1.5
1.2
12.240
5.075
3.350
2.538
1.827
1.523
1.218
V
V
V
V
V
V
V
VO=12.0 V
VO=5.0 V
Vo=3.3 V
VO=2.5 V
VO=1.8 V
Vo=1.5 V
Vo=1.2 V
-
24
5
3
3
3
3
3
48
10
7
7
7
7
7
mV
mV
mV
mV
mV
mV
mV
VO=12.0 V
VO=5.0 V
Vo=3.3 V
VO=2.5 V
VO=1.8 V
Vo=1.5 V
Vo=1.2 V
-
30
10
7
6
5
5
5
60
20
15
12
10
10
10
mV
mV
mV
mV
mV
mV
mV
Regulation Over Temperature
(-40 C to +85 C)
VO=12.0 V
VO=5.0 V
Vo=3.3 V
VO=2.5 V
VO=1.8 V
Vo=1.5 V
VO=1.2 V
-
60
45
30
25
20
15
12
100
75
50
40
30
25
20
mV
mV
mV
mV
mV
mV
mV
VO=12.0 V
VO=5.0 V
Vo=3.3 V
VO=2.5 V
VO=1.8 V
Vo=1.5 V
Vo=1.2 V
0
0
0
0
0
0
0
-
5
12
15
15
15
15
15
A
A
A
A
A
A
A
VO=12.0 V
VO=5.0 V
Vo=3.3 V
VO=2.5 V
VO=1.8 V
Vo=1.5 V
Vo=1.2 V
5.5
13.5
16
16
16
16
16
6.5
16
18
18
18
18
18
8
19
20
20
20
20
20
A
A
A
A
A
A
A
-
3
5
As
Line Regulation
Load Regulation
Notes
Vin=48 V, Io=50% full load,
Ta=25 C.
Output Current
Current Limit Threshold
Short Circuit Surge Transient
2
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 1.2 Vdc - 3.3 Vdc/15 A, 5 Vdc/12 A, 12 Vdc/5 A Output, 1/8 Brick
Bel Power, Inc. , a subsidiary of Bel Fuse, Inc.
Nov. 22, 2010
Output Specifications (continued)
Parameter
Ripple and Noise (rms)
Min
Typ
Max
Unit
VO=12.0 V
VO=5.0 V
Vo=3.3 V
VO=2.5 V
VO=1.8 V
Vo=1.5 V
Vo=1.2 V
Ripple and Noise (pk-pk)
VO=12.0 V
VO=5.0 V
Vo=3.3 V
VO=2.5 V
VO=1.8 V
Vo=1.5 V
Vo=1.2 V
-
25
25
15
12
10
10
10
50
50
30
25
20
20
20
mV
mV
mV
mV
mV
mV
mV
-
100
95
55
55
45
45
45
130
120
80
80
70
70
70
mV
mV
mV
mV
mV
mV
mV
Turn on Time
-
15
30
mS
Overshoot at Turn on
-
0
5
%
0
0
0
0
0
0
0
-
1000
10000
15000
15000
15000
15000
15000
Notes
Test conditions: Vin=48 V, Ta=25
C, with a 1uF ceramic capacitor
and a 10 uF Tantalum capacitor at
the output.
Output Capacitance
VO=12.0 V
VO=5.0 V
Vo=3.3 V
VO=2.5 V
VO=1.8 V
Vo=1.5 V
Vo=1.2 V
uF
Transient Response
25% ~ 50%
Max Load
50% ~ 25%
Max Load
25% ~ 50%
Max Load
50% ~ 25%
Max Load
25% ~ 50%
Max Load
50% ~ 25%
Max Load
Overshoot
-
300
400
mV
-
400
500
uS
-
300
400
mV
Settling Time
-
400
500
uS
Overshoot
-
200
230
mV
Settling Time
-
300
400
uS
-
200
230
mV
Settling Time
-
300
400
uS
Overshoot
-
150
200
mV
-
200
250
uS
-
150
200
mV
-
200
250
uS
Settling Time
Overshoot
Overshoot
Settling Time
Overshoot
Settling Time
VO=
12.0 V
VO=
5.0 V
VO=
1.2 V
- 3.3 V
Test conditions:
di/dt = 0.1 A/uS, Vin=48 V, with a 1
uF ceramic capacitor and a 10 uF
Tantalum 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
ISOLATED DC/DC CONVERTERS
48 Vdc Input 1.2 Vdc - 3.3 Vdc/15 A, 5 Vdc/12 A, 12 Vdc/5 A Output, 1/8 Brick
Bel Power, Inc. , a subsidiary of Bel Fuse, Inc.
Nov. 22, 2010
General Specifications
Parameter
Min
Typ
Max
Unit
88
88
87
85
83
82
80
91
91
89
87
85
84
82
-
%
%
%
%
%
%
%
Switching Frequency
270
300
330
kHz
Isolation capacitance
-
1500
-
pF
80
-
110
%Vo
Remote Sense Compesation
-
-
10
%Vo
Over Temperature Protection
-
125
-
C
Over Voltage Protection
-
130
-
%Vo
Weight
-
20
-
g
Notes
Efficiency
VO=12.0 V
VO=5.0 V
VO=3.3 V
VO=2.5 V
VO=1.8 V
VO=1.5 V
VO=1.2 V
Output Voltage Trim Range
MTBF
2,410,000
hours
2.30 x 0.896 x 0.411
58.42 x 22.86 x 10.45
-
Vin=48V, full load
The total voltage increased by trim
and remote sense should not exceed
10%Vo
Vin=48V, full load, in hiccup mode
Calculated Per Bell Core SR-332 (IO =
12 A, Vin=48 V, Vo=3.3 V, Ta = 25 C,
No forced air)
Dimensions
Inches (L × W × H)
Millimeters (L × W × H)
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 1.2 Vdc - 3.3 Vdc/15 A, 5 Vdc/12 A, 12 Vdc/5 A Output, 1/8 Brick
Bel Power, Inc. , a subsidiary of Bel Fuse, Inc.
Nov. 22, 2010
Remote On/Off
Parameter
Signal Low (Unit On)
Signal High (Unit Off)
Signal Low (Unit Off)
Signal High (Unit On)
Active Low
Active High
Current Sink
Min
-0.3
Typ
-
Max
0.8
Unit
V
2.4
-
18
V
-0.3
-
0.8
V
2.4
-
18
V
0
-
0.75
mA
Notes
0RCY-60TxxL. The remote on/off pin
open, Unit off
0RCY-60Txx0. The remote on/off pin
open, Unit on
Output Trim Equations
Equations for calculating the trim resistor (in kΩ) are shown below. The Trim Down resistor should be connected
between the Trim pin and Ground pin. The Trim Up resistor should be connected between the Trim pin and the
Vout. Only one of the resistors should be used for any given application.
Rtrimdown 
511
 10.22
delta
Vout
Module
Trim
1.Vo =12 V-1.5 V
Rtrimdown
GND
(100  delta )  Vo  5.11  626
Rtrimup 
 10.22
1.225  delta
2. Vo =1.2 V
Rtrimup 
Vout
(100  delta )  Vo  5.11  626
 10.22
1.225  delta
Rtrimup
Module
Trim
GND
Notes:
delta 
Vo _ req  Vo   100 % 
Vo
Vo_req=Desired (trimmed) output voltage [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
48 Vdc Input 1.2 Vdc - 3.3 Vdc/15 A, 5 Vdc/12 A, 12 Vdc/5 A Output, 1/8 Brick
Bel Power, Inc. , a subsidiary of Bel Fuse, Inc.
Nov. 22, 2010
Efficiency Data
85%
80%
75%
70%
65%
60%
55%
50%
45%
1.5A
0RCY-60TV5x EFFICIENCY
90%
85%
EFFICIENCY
EFFICIENCY
0RCY-60TV2x EFFICIENCY
36V
48V
75V
3.75A
7.5A
11.25A
80%
75%
36V
48V
75V
70%
65%
60%
55%
50%
1.5A
15A
3.75A
OUTPUT CURRENT (A)
0RCY-60TV8x EFFICIENCY
EFFICIENCY
EFFICIENCY
85%
80%
75%
36V
48V
75V
70%
65%
60%
55%
80%
36V
48V
75V
75%
70%
65%
60%
55%
50%
3.75A
7.5A
11.25A
1.5A
15A
3.75A
7.5A
11.25A
15A
OUTPUT CURRENT (A)
OUTPUT CURRENT (A)
0RCY-60T05x EFFICIENCY
0RCY-60T03x EFFICIENCY
95%
95%
90%
85%
EFFICIENCY
90%
EFFICIENCY
15A
90%
85%
36V
48V
75V
80%
75%
70%
85%
36V
48V
75V
80%
75%
70%
65%
65%
60%
60%
1.5A
11.25A
0RCY-60T02x EFFICIENCY
90%
1.5A
7.5A
OUTPUT CURRENT (A)
3.75A
7.5A
11.25A
1.2A
15A
3.0A
6.0A
9.0A
12.0A
OUTPUT CURRENT (A)
OUTPUT CURRENT (A)
0RCY-60T12x EFFICIENCY
95%
EFFICIENCY
90%
85%
36V
48V
75V
80%
75%
70%
65%
60%
0.5A
1.25A
2.5A
3.75A
5.0A
OUTPUT CURRENT (A)
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 1.2 Vdc - 3.3 Vdc/15 A, 5 Vdc/12 A, 12 Vdc/5 A Output, 1/8 Brick
Bel Power, Inc. , a subsidiary of Bel Fuse, Inc.
Nov. 22, 2010
Thermal Derating Curves
Vin=48V, with maximum junction temperature of semiconductors derated to 120 degree C.
Vo=1.2 V
Vo=1.5 V
Vo=1.8 V
Vo=2.5 V
Vo=3.3 V
Vo=5 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
48 Vdc Input 1.2 Vdc - 3.3 Vdc/15 A, 5 Vdc/12 A, 12 Vdc/5 A Output, 1/8 Brick
Bel Power, Inc. , a subsidiary of Bel Fuse, Inc.
Nov. 22, 2010
Thermal Derating Curves (continued)
Vo=12 V
Thermal Reference
Note:TH1 and TH2 are hot spots which should not exceed 118 degree C.
Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302  Tel 201-432-0463  Fax 201-432-9542  www.belfuse.com
9
ISOLATED DC/DC CONVERTERS
48 Vdc Input 1.2 Vdc - 3.3 Vdc/15 A, 5 Vdc/12 A, 12 Vdc/5 A Output, 1/8 Brick
Bel Power, Inc. , a subsidiary of Bel Fuse, Inc.
Nov. 22, 2010
Ripple and Noise Waveforms
1.2 V/15 A output.
1.5 V/15 A output
1.8 V/15 A output.
2.5 V/15 A output
3.3 V/15 A output.
5.0 V/12 A output
12 V/5 A output
Note: Ripple and noise at full load, 48 V input, and with a 1 uF ceramic cap and a 10 uF 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
10
ISOLATED DC/DC CONVERTERS
48 Vdc Input 1.2 Vdc - 3.3 Vdc/15 A, 5 Vdc/12 A, 12 Vdc/5 A Output, 1/8 Brick
Bel Power, Inc. , a subsidiary of Bel Fuse, Inc.
Nov. 22, 2010
Transient Response Waveforms
Vout=1.2 V 50% to 25% Load Transients
Vout=1.2 V 25% to 50% Load Transients
Vout=1.5 V 50% to 25% Load Transients
Vout=1.5 V 25% to 50% Load Transients
Vout=1.8 V 50% to 25% Load Transients
Vout=1.8 V 25% to 50% Load Transients
Vout=2.5 V 50% to 25% Load Transients
Vout=2.5 V 25% to 50% Load Transients
Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302  Tel 201-432-0463  Fax 201-432-9542  www.belfuse.com
11
ISOLATED DC/DC CONVERTERS
48 Vdc Input 1.2 Vdc - 3.3 Vdc/15 A, 5 Vdc/12 A, 12 Vdc/5 A Output, 1/8 Brick
Bel Power, Inc. , a subsidiary of Bel Fuse, Inc.
Nov. 22, 2010
Transient Response Waveforms (continued)
Vout=3.3 V 50% to 25% Load Transients
Vout=3.3 V 25% to 50% Load Transients
Vout=5.0 V 50% to 25% Load Transients
Vout=5.0 V 25% to 50% Load Transients
Vout=12 V 50% to 25% Load Transients
Vout=12 V 25% to 50% Load Transients
Note: Transient response is tested at di/dt=0.1 A/uS, external 10 uF tantalum capacitor and 1 uF ceramic
capacitor, Vin=48 V, 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
12
ISOLATED DC/DC CONVERTERS
48 Vdc Input 1.2 Vdc - 3.3 Vdc/15 A, 5 Vdc/12 A, 12 Vdc/5 A Output, 1/8 Brick
Bel Power, Inc. , a subsidiary of Bel Fuse, Inc.
Nov. 22, 2010
Mechanical Outline
Pin
Function
Dia.
1
Vin(+)
0.04’’
2
Remote On/Off
0.04’’
3
Vin(-)
0.04’’
4
Vout(-)
0.062’’
5
Sense-
0.04’’
6
TRIM
0.04’’
7
Sense+
0.04’’
8
Vout(+)
0.062’’
Note: This module is recommended and compatible with Pb-Free Wave Soldering and must be soldered
using a peak solder temperature of no more than 260 ºC for less than 5 seconds.
Note:
1) All Pins: Material - Copper Alloy;
Finish – 3 micro inches minimum Gold over 50 micro inches minimum Nickel plate.
2) Undimensioned components are shown for visual reference only.
3) All dimensions in inches (mm); Tolerances: x.xx +/-0.02 in. (x.x +/-0.5mm) x.xxx +/-0.010 in. (x.xx +/-0.25mm).
Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302  Tel 201-432-0463  Fax 201-432-9542  www.belfuse.com
13
ISOLATED DC/DC CONVERTERS
48 Vdc Input 1.2 Vdc - 3.3 Vdc/15 A, 5 Vdc/12 A, 12 Vdc/5 A Output, 1/8 Brick
OutputConverter
Nov. 22, 2010
Bel Power, Inc. , a subsidiary
of Bel Fuse, Inc.
Revision History
Date
Revision
2010-11-22
B
Changes Detail
Approval
Add diameter of pin and recommended pad layout in MD.
XF Jiang
RoHS Compliance
Complies with the European Directive 2002/95/EC, calling for the elimination of lead and
other hazardous substances from electronic products.
2010 Bel Fuse Inc. Specifications subject to change without notice. 112210
14
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