ISOLATED DC/DC CONVERTERS
18 Vdc - 75 Vdc Input
5 Vdc/2 A Output
0RLC-10U05x
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Isolated
Fixed Frequency
High Efficiency
RoHS Compliant
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PRELIMINARY
Rev.C
Remote On/Off
Input Under/Over Voltage Lockout
Output Over-Voltage Shut Down
SCP/OCP
Excellent Thermal Performance
Over Temperature Protection
Basic Insulation
High Power Density
Output Voltage Trim
Low Cost
Pre-Bias Start Up
Description
The 0RLC-10U05x is an isolated dc/dc converter that operates from a nominal 48 Vdc source. This unit provides
up to 10 W of output power from a nominal 48 Vdc input. This unit is designed to be highly efficient and low cost.
The converter is provided in a 1"x2" package.
Part Selection
Output
Voltage
5 Vdc
Input Voltage
18 Vdc - 75 Vdc
Max. Output
Current
2A
Max. Output
Power
10 W
Typical
Efficiency
83%
Model Number
Active High
0RLC-10U050
Model Number
Active Low
0RLC-10U05L
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)
I/O Isolation Voltage
Ambient Temperature
Storage Temperature
Min
-0.3 V
-
-40
°C
-55
°C
Typ
-
-
-
-
Max
80 V
1500 V
85
°C
125
°C
Notes
Input Specifications
Parameter
Input Voltage
Input Current
Input Current (no load)
Input Reflected Ripple Current
(pk-pk)
Turn-on Input Voltage
Turn-off Input Voltage
Min
18 V
-
-
-
-
16 V
Typ
-
-
-
-
-
-
Max
75 V
0.8 A
50 mA
30 mA
18 V
-
With simulated source impedance of
10 uH, 5 Hz to 20 MHz, use a 47 uF/
100 V electrolytic capacitor with
ESR=1 ohm max, at 200 kHz.
Notes
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
18 Vdc - 75 Vdc Input
5 Vdc/2 A Output
Output Specifications
Parameter
Output Voltage Set Point
Line Regulation
Load Regulation
Temperature Regulation
(-40
°C
to +85
°C)
Ripple and Noise (pk-pk)
Output Current
Current Limit Threshold
Turn on Time
Rise Time
Output Capacitance
Transient Response
50% ~ 100%
Max Load
Overshoot
Vo=5 V
Settling Time
-
-
100 uS
-
-
200 mV
di/dt=0.1 A/us, Vin=48 V,
with a 10 tantalum cap and a
1uF ceramic cap at the
output.
Min
4.925 V
-
-
-
-
0A
2.3 A
-
-
-
0 uF
Typ
5.0 V
-
-
-
-
-
-
-
-
-
-
Max
5.075 V
0.5%Vo
1%Vo
0.02%Vo/C
60 mV
2A
3.5 A
50 mS
30 mS
30 mS
1000 uF
Vinnom, Ionom, resistive load
Vinnom, Ionom, capacitive load
0-20 MHz BW, with a 1uF ceramic
cap and a 10 uF Tantalum cap at
output
Notes
V
in
=48 V, I
O
=50% full load
Note:
All specifications are typical at nominal input, full load at 25°C unless noted.
General Specifications
Parameter
Efficiency
Switching Frequency
Isolation Capacitance
Output Voltage Trim Range
Over Temperature Protection
MTBF
Dimensions
Inches (L
×
W
×
H)
Millimeters (L
×
W
×
H)
Weight
-
2.0 x 1.0 x 0.475
50.8 x 25.4 x 12.05
12 g
-
Min
80%
270 kHz
-
90%
-
Typ
83%
300 kHz
1500 pF
-
125
°C
TBD
Max
-
330 kHz
-
110%
-
Calculated Per Bell Core SR-332 (I
O
= 80%
I
O max
; Vin=48 V; Vo=5 V; T
a
= 25
°C)
Notes
Measured at V
in
=48 V, 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
ISOLATED DC/DC CONVERTERS
18 Vdc - 75 Vdc Input
5 Vdc/2 A Output
Control Specifications
Parameter
Remote On/Off
Signal Low (Unit On)
Signal High (Unit Off)
Signal Low (Unit Off)
Signal High (Unit On)
Signal High (Unit On)
Active Low
Active High
-0.3 V
2.4 V
-0.3 V
2.4 V
0 mA
-
-
-
-
-
0.8 V
18 V
0.8 V
18 V
0.75 mA
The remote on/off pin open, Unit
Off.
The remote on/off pin open, Unit
On.
Min
Typ
Max
Notes
Output Trim Equations
Equations for calculating the trim resistor (in kohm) given the desired adjusted voltage (Vadj) and the nominal
output voltage of the converter (Vo) are shown below. The Trim Down resistor should be connected between the
Trim pin and Vout. The Trim Up resistor should be connected between the Trim pin and Ground. Only one of the
resistors should be used for any given application.
Vout
Rtrim_down
:=
6.25
( Vo
−
Vadj_down)
6.25
−
2.5
Rtrim-down
Module
Trim
GND
Rtrim_up
:=
Vout
Module
Vadj_up
−
Vo
Trim
Rtrim-up
Output voltage Vo=5.01 V
GND
Efficiency Data
Efficiency Curve
90%
88%
86%
84%
82%
80%
78%
76%
74%
72%
70%
0.50
Efficiency
18 V
24 V
48 V
75 V
1.00
1.50
2.00
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
18 Vdc - 75 Vdc Input
5 Vdc/2 A Output
Thermal Derating Curve
Vin=48 V, with maximum junction temperature of semiconductors derated to 120 degree C.
Ripple and Noise Waveform
48 Vdc input, 5.0 Vdc/2 A output
Note:
Ripple and noise at full load, with a 1uF ceramic cap and a 10 uF Tantalum cap at output, Ta=25 deg C.
Transient Response Waveform
Vo= 5V 50%-100%-50% Load Transients at Vin=48 V@Ta=25℃ Vo= 5V 100%-50% Load Transients at Vin=48 V@Ta=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
18 Vdc - 75 Vdc Input
5 Vdc/2 A Output
Mechanical Outline
Pin Connections
Pin
1
2
3
4
5
6
Function
V
in
+
V
in
-
On/Off
V
o
+
Trim
V
o
-
Pin Size
0.040’’
0.040’’
0.040’’
0.040’’
0.040’’
0.040’’
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. 012508
CORPORATE
Bel Fuse Inc.
206 Van Vorst Street
Jersey City, NJ 07302
Tel 201-432-0463
Fax 201-432-9542
www.belfuse.com
FAR EAST
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
EUROPE
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