BEL 0RCY

ISOLATED DC/DC CONVERTERS
18 Vdc - 75 Vdc Input
5.0 Vdc /15 A Output
Bel Power Inc., a subsidiary of Bel Fuse Inc.
Mar. 02, 2011
0RCY-60U05x
RoHS Compliant
Rev.F
Features

Isolated

Over Temperature Protection

High Efficiency

OCP/SCP

High Power Density

Low Cost

Fixed Frequency (320 kHz)

Output Voltage Trim

Input Under-Voltage Lockout

Positive/Negative Remote Sense

Input Over-Voltage Lockout

Basic Insulation

Output Over-Voltage Shutdown

Remote On/Off

Ultra Wide Input Range: 18 Vdc - 75 Vdc

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-60U05x is part of the isolated dc/dc converters that operate from a wide input range (18 Vdc - 75 Vdc)
and can cover both 24 Vin and 48 Vin input range. These units will provide up to 75 W of output power. They are
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. These converters are provided in an industry
standard 1/8 brick package.
Part Selection
Output
Voltage
Input
Voltage
5.0 Vdc
18 Vdc –
75 Vdc
Max.
Output
Current
Max.
Output
Power
Typical
Efficiency
Model Number
Active High
Pin Length 0.18”
Model Number
Active Low
Pin Length 0.18”
Model Number
Active Low
Pin Length 0.11”
15 A
75 W
92.5%
0RCY-60U050
0RCY-60U05L
0RCY-60U05A
Notes: Add “G” suffix at the end of the model number to indicate Tray Packaging.
Part Number Explanation
0 R CY – 60 U 05 x
1 2
3
4
5 6
7
1---Through hole
2---RoHS 6, change “R” to “7” means RoHS 5
3---Series name
4---Series code
5---Input range (18-75V)
6---Output voltage 5.0V
7---Suffix, “0” & “L” indicated the pin length of the unit is 0.18” and “A” indicated the pin length is 0.11”.
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
18 Vdc - 75 Vdc Input
5.0 Vdc /15 A Output
Bel Power Inc., a subsidiary of Bel Fuse Inc.
Mar. 02, 2011
Absolute Maximum Ratings
Max
Unit
-
80
V
-
100
V
-0.3
-
18
V
-
-
1500
V
Ambient Temperature
-40
-
85
C
Storage Temperature
-55
-
125
C
Parameter
Continuous Input Voltage
Input Transient Voltage
Remote On/Off
I/O Isolation Voltage
Min
Typ
-0.3
-
Notes
100 mS maximum
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
Min
18
Typ
24/48
Max
75
Unit
V
-
4.8
1.12
-
A
A
Input Current (no load)
-
50
90
mA
Remote Off Input Current
-
10
15
mA
Input Reflected Ripple Current
(rms)
-
7
10
mA
Input Reflected Ripple Current
(pk-pk)
-
30
50
mA
I t Inrush Current Transient
-
0.05
0.1
As
Turn-on Voltage Threshold
16.0
16.5
17.5
V
Turn-off Voltage Threshold
14.5
15.0
16.0
V
Input Over Voltage Lockout
76
78
80
V
Notes
Input Current (full load)
Vin=18 V
Vin=75 V
2
Tested with simulated source
impedance of 10 uH, 5 Hz to 20 MHz;
use a 1 uF/100 V ceramic cap and a
100 uF/100 V electrolytic cap with ESR
= 1 ohm max. at 200 kHz at 25 C.
2
Note: All specifications are typical at 25 C unless otherwise stated.
Output Specifications
Parameter
Output Voltage Set Point
Min
4.9
Typ
5.0
Max
5.1
Unit
V
Load Regulation
-
±6
±10
mV
Line Regulation
-
±10
±15
mV
Regulation Over Temperature
(-40deg.C-85deg.C)
-
±30
±120
mV
Ripple and Noise (rms)
-
20
30
mV
Ripple and Noise (pk-pk)
-
75
120
mV
Output Current Range
0
-
15
A
Output DC Current Limit
16
-
30
A
2
Short Circuit Surge Transient
Turn on Time
-
3
5
As
10
15
20
mS
Notes
Vin=48V, Io=50% load
0-20 MHz BW, with a 0.1 µF ceramic
cap and a 10 uF tantalum cap at the
output.
Vin=48 V, in Hiccup Mode.
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
18 Vdc - 75 Vdc Input
5.0 Vdc /15 A Output
Bel Power Inc., a subsidiary of Bel Fuse Inc.
Mar. 02, 2011
Output Specifications (continued)
Parameter
Min
Typ
Max
Unit
Overshoot at Turn on
-
0
3
%
Output Capacitance
0
-
3300
uF
Notes
Transient Response
△V75%~50% of
Overshoot
-
170
250
mV
Max Load
Settling Time
-
120
200
uS
△V50%~75% of
Overshoot
-
170
250
mV
Max Load
Settling Time
-
120
200
uS
di/dt=0.1 A/us, Vin=24 Vdc, Ta=25 °C,
with a 0.1 µF ceramic cap and a 10 uF
tantalum cap at output.
Note: All specifications are typical at nominal input, full load at 25°C unless otherwise stated.
General Specifications
Parameter
Min
92
Typ
92.5
Max
-
Unit
%
90
91
-
%
Switching Frequency
300
320
340
kHz
Isolation capacitance
-
1500
-
pF
Remote Sense Compensation
-
-
10
%
80
-
110
%
Over Temperature Protection
-
125
-
C
Over Voltage Protection
-
-
6.5
V
Weight
-
TBD
-
g
Efficiency
Output Voltage Trim Range
FIT
TBD
-
2.30 x 0.896 x 0.49
58.42 x 22.76 x 12.47
-
Notes
Vin=48V, full load,
Vin=24V, full load
The total voltage increased by trim
and remote sense should not exceed
15%Vo.
Vin=48 V, full load, in Hiccup mode.
Calculated Per Bell Core SR-332
(Io=80%load, Ta = 25 C,
9
FIT=10 /MTBF)
Dimensions
Inches (L × W × H)
Millimeters (L × W × H)
Note: All specifications are typical at 25 C unless otherwise stated.
Control Specifications
Parameter
Remote On/Off
Signal Low (Unit On)
Signal High (Unit Off)
Signal Low (Unit Off)
Signal High (Unit On)
Current Sink
Active Low
Active High
Min
Typ
Max
Unit
Notes
-0.3
-
0.8
V
2.4
-
18
V
0RCY-60U05L & 0RCY-60U05A. The
remote on/off pin open, Unit off.
-0.3
-
0.8
V
2.4
-
18
V
0
-
0.75
mA
0RCY-60U050. The remote on/off pin
open, Unit on.
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
18 Vdc - 75 Vdc Input
5.0 Vdc /15 A Output
Bel Power Inc., a subsidiary of Bel Fuse Inc.
Mar. 02, 2011
Output Trim Equations
Equations for calculating the trim resistor are shown below. The Trim Down resistor should be connected
between the Trim pin and GND pin. The Trim Up resistor should be connected between the Trim pin and the
Vout pin. Only one of the resistors should be used for any given application.
Rtrimdown 
Vout
511
 10.22k
delta
Module
Trim
GND
Rtrimdown
Vout
(100  delta)  Vo  5.11  626
Rtrimup 
 10.22k 
1 .225  delta
Module
Trim
Rtrimup
GND
Note:
delta 
Vo _ req  Vo   100 % 
Vo
600
5000
540
4500
Trim resistor value,Rtrim_up(KOhm)
Trim resistor value Rtrim_down(KOhm)
Vo_req=Desired (trimmed) output voltage [V]
Output voltage Vo=5.000 V
480
420
360
300
240
180
120
60
0
4000
3500
3000
2500
2000
1500
1000
500
4
4.1
4.2
4.3
4.4
4.5
4.6
4.7
Adjusted output voltage Vo,adj (V)
4.8
4.9
5
0
5
5.05
5.1
5.15 5.2 5.25 5.3 5.35
Adjusted output voltage Vo,adj(V)
Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302  Tel 201-432-0463  Fax 201-432-9542  www.belfuse.com
5.4
5.45
4
5.5
ISOLATED DC/DC CONVERTERS
18 Vdc - 75 Vdc Input
5.0 Vdc /15 A Output
Bel Power Inc., a subsidiary of Bel Fuse Inc.
Mar. 02, 2011
Thermal Derating Curves
Vin=24 V, Vo=5 V; Maximum FET junction temperature derated to 120C
Vin=48 V, Vo=5 V; Maximum FET junction temperature derated to 120C
Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302  Tel 201-432-0463  Fax 201-432-9542  www.belfuse.com
5
ISOLATED DC/DC CONVERTERS
18 Vdc - 75 Vdc Input
5.0 Vdc /15 A Output
Mar. 02, 2011
Bel Power Inc., a subsidiary of Bel Fuse Inc.
Ripple and Noise Waveforms
24 V input, 5.0 V/15 A output
48 V input, 5.0 V/15 A output
Note: Ripple and noise at full load, 0-20 MHz BW, with a 0.1 uF ceramic cap and a 10 uF tantalum cap at the
output, and Ta=25 deg C.
Transient Response Waveforms
75%-50% Load Transients at Vin=24 V
50%-75% Load Transients at Vin=24 V
Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302  Tel 201-432-0463  Fax 201-432-9542  www.belfuse.com
6
ISOLATED DC/DC CONVERTERS
18 Vdc - 75 Vdc Input
5.0 Vdc /15 A Output
Bel Power Inc., a subsidiary of Bel Fuse Inc.
Mar. 02, 2011
Transient Response Waveforms (continued)
75%-50% Load Transients at Vin=48 V
50%-75% Load Transients at Vin=48 V
Note: Transients Response at di/dt=0.1 A/us, with a 0.1 µF ceramic cap and a 10 uF tantalum cap at output, and
Ta=25 deg C.
Efficiency Data
Efficiency
Efficiency Curve
100.00%
90.00%
80.00%
70.00%
60.00%
50.00%
40.00%
30.00%
20.00%
10.00%
0.00%
18V
24V
48V
75V
0
1.5
3.75
7.5
11.25
15
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
7
ISOLATED DC/DC CONVERTERS
18 Vdc - 75 Vdc Input
Mar. 02, 2011
Mechanical Outline
5.0 Vdc /15 A Output
Bel Power Inc., a subsidiary of Bel Fuse Inc.
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’’
0.060’’
0.040’’
0.040’’
0.040’’
0.060’’
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+.
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
8
ISOLATED DC/DC CONVERTERS
18 Vdc - 75 Vdc Input
5.0 Vdc /15 A Output
Bel Power Inc., a subsidiary of Bel Fuse Inc.
Mar. 02, 2011
Revision History
Date
Revision
Changes Detail
Approval
2008-01-22
PA
First release.
XQ Han
2008-04-02
PB
Add thermal derating curve, dynamic plot, mechanical outline and
ripple wavefrom.
XQ Han
2009-02-20
PC
Update noload input current, load regulation, line regulation, output
ripple and noise, output DC current limit, turn on time, transient
response, switching frequency, derating, efficiency typical value
and efficiency data.
XQ Han
2010-09-21
D
Add P/N 0RCY-60U05A with 0.11” pin length.
XF Jiang
2010-12-30
E
Update TD.
XF Jiang
2011-03-02
F
1. Add input transient voltage in absolute maximum ratings.
2. Update TD.
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.
2011 Bel Fuse Inc. Specifications subject to change without notice.030211
9
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