ISOLATED DC/DC CONVERTERS
48 Vdc Input
3.3 Vdc - 24 Vdc/7 A - 1.25 A Output
0RLC-25T Series
•
•
•
•
•
•
•
Fixed Frequency (230 kHz)
RoHS Compliant
•
•
•
•
•
•
Rev.A
Remote On/Off
Output Voltage Trim
Input Under Voltage Lockout
SCP/OCP
Over Temperature Protection
Remote On/Off Logic (Option)
Output Over Voltage Shut Down
Isolated
High Efficiency
High Power Density
Low Cost
Safety Approval to UL60950-1
(Pending)
Description
The 0RLC-25T series are isolated dc/dc converters that operate from a nominal 48 Vdc source. These units will
provide up to 30 W of output power. These units are designed to be high efficient and very low cost. Features
include remote on/off, over current protection, and under voltage lockout. These converters are provided in an
industry standard package.
Part Selection
Output
Voltage
3.3 Vdc
5.0 Vdc
12.0 Vdc
15.0 Vdc
24.0 Vdc
Input Voltage
36 Vdc - 75 Vdc
36 Vdc - 75 Vdc
36 Vdc - 75 Vdc
36 Vdc - 75 Vdc
36 Vdc - 75 Vdc
Max. Output
Current
7A
5A
2.5 A
2.0 A
1.25 A
Max. Output
Power
23 W
25 W
30 W
30 W
30 W
Typical
Efficiency
88%
90%
90%
90%
91%
Model Number
Active High
0RLC-25T033
0RLC-25T050
0RLC-25T120
0RLC-25T150
0RLC-25T240
Model Number
Active Low
0RLC-25T03L
0RLC-25T05L
0RLC-25T12L
0RLC-25T15L
0RLC-25T24L
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)
Remote On/Off
Ambient Temperature
Storage Temperature
Min
-0.3 V
-0.3 V
-40
°C
-55
°C
Typ
-
-
-
-
Max
80 V
12 V
85
°C
125
°C
Notes
100 V for 100 mS Max
Input Specifications
Parameter
Input Voltage
Input Current
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 Input Voltage
Turn-off Input Voltage
2
Min
36 V
-
-
-
-
-
-
31 V
30 V
Typ
-
-
25 mA
3 mA
10 mA
40 mA
0.012 A s
34 V
33 V
2
Max
75 V
1.1 A
40 mA
10 mA
20 mA
60 mA
0.024 A s
36 V
35 V
2
Notes
With simulated source impedance of 10
uH, 5 Hz to 20 MHz. And use a 100 uF/
100 V electrolytic capacitor with ESR=1
ohm max, at 200 kHz.
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
3.3 Vdc - 24 Vdc/7 A - 1.25 A Output
Min
V
O
=3.3 V
V
O
=5.0 V
V
O
=12.0 V
V
O
=15.0 V
V
O
=24.0 V
Line Regulation
V
O
=3.3 V
V
O
=5.0 V
V
O
=12.0 V
V
O
=15.0 V
V
O
=24.0 V
Load Regulation
V
O
=3.3 V
V
O
=5.0 V
V
O
=12.0 V
V
O
=15.0 V
V
O
=24.0 V
Temperature Regulation (-40
°C
to +85
°C)
V
O
=3.3 V
V
O
=5.0 V
V
O
=12.0 V
V
O
=15.0 V
V
O
=24.0 V
Ripple and Noise (rms)
V
O
=3.3 V
V
O
=5.0 V
V
O
=12.0 V
V
O
=15.0 V
V
O
=24.0 V
Ripple and Noise (pk-pk)
V
O
=3.3 V
V
O
=5.0 V
V
O
=12.0 V
V
O
=15.0 V
V
O
=24.0 V
Output Current
V
O
=3.3 V
V
O
=5.0 V
V
O
=12.0 V
V
O
=15.0 V
V
O
=24.0 V
Current Limit Threshold
V
O
=3.3 V
V
O
=5.0 V
V
O
=12.0 V
V
O
=15.0 V
V
O
=24.0 V
Short Circuit Surge Transient
Turn on Time
Overshoot at Turn On
Output Capacitance
V
O
=3.3 V
V
O
=5.0 V
V
O
=12.0 V
V
O
=15.0 V
V
O
=24.0 V
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
0A
0A
0A
0A
0A
7.7 A
5.5 A
3.0 A
2.2 A
1.5 A
-
-
-
0 uF
0 uF
0 uF
0 uF
0 uF
±2 mV
±4 mV
±9 mV
±10 mV
±15 mV
30 mV
40 mV
100 mV
120 mV
150 mV
10 mV
10 mV
10 mV
15 mV
20 mV
40 mV
40 mV
40 mV
80 mV
85 mV
-
-
-
-
-
-
-
-
-
-
2
0.5 A s
10 mS
0%
-
-
-
-
-
±5 mV
±8 mV
±18 mV
±20 mV
±30 mV
50 mV
70 mV
170 mV
200 mV
240 mV
20 mV
20 mV
20 mV
30 mV
40 mV
75 mV
75 mV
75 mV
120 mV
150 mV
7.0 A
5.0 A
2.5 A
2.0 A
1.25 A
12.0 A
8.0 A
4.2 A
3.4 A
2.2 A
2
1A s
25 mS
5%
3300 uF
2200 uF
330 uF
330 uF
330 uF
-
-
-
-
-
±1 mV
±2 mV
±5 mV
±8 mV
±10 mV
±3 mV
±5 mV
±10 mV
±15 mV
±20 mV
3.234 V
4.900 V
11.76 V
14.70 V
23.52 V
Typ
3.3 V
5.0 V
12.0 V
15.0 V
24.0 V
Max
3.366 V
5.100 V
12.240 V
15.300 V
24.480 V
Notes
Test condition: V
in
=48 V,
I
O
=50% full load at the
output.
Output Specifications
Parameter
Output Voltage Set Point
Test condition of the output
ripple and noise: 0-20 MHz
BW, with a 1 µF ceramic
capacitor and a
220 uF /35 V at the 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
48 Vdc Input
3.3 Vdc - 24 Vdc/7 A - 1.25 A Output
Output Specifications (continued)
Parameter
Transient Response
50% ~ 75%
Max Load
25% ~ 50%
Max Load
50% ~ 75%
Max Load
25% ~ 50%
Max Load
50% ~ 75%
Max Load
25% ~ 50%
Max Load
50% ~ 75%
Max Load
25% ~ 50%
Max Load
50% ~ 75%
Max Load
25% ~ 50%
Max Load
Overshoot
Settling Time
Overshoot
Settling Time
Overshoot
Settling Time
Overshoot
Settling Time
Overshoot
Settling Time
Overshoot
Settling Time
Overshoot
Settling Time
Overshoot
Settling Time
Overshoot
Settling Time
Overshoot
Settling Time
Vo=3.3 V
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
75 mV
150 uS
75 mV
150 uS
100 mV
150 uS
100 mV
150 uS
150 mV
150 uS
150 mV
150 uS
100 mV
200 uS
100 mV
200 uS
150 mV
300 uS
150 mV
300 uS
100 mV
200 uS
100 mV
200 uS
150 mV
200 uS
150 mV
200 uS
200 mV
200 uS
200 mV
200 uS
200 mV
300 uS
200 mV
300 uS
300 mV
500 uS
300 mV
500 uS
Min
Typ
Max
Notes
Vo=5.0 V
Vo=12.0 V
Test condition of the
transient response:
di/dt=0.1 A/us, Vin=48 V,
with a 220 uF/35 V
electrolytic capacitor at the
output.
Vo=15.0 V
Vo=24.0 V
Note:
All specifications are typical at nominal input, full load at 25°C unless noted.
General Specifications
Parameter
Efficiency
V
O
=3.3 V
V
O
=5.0 V
V
O
=12.0 V
V
O
=15.0 V
V
O
=24.0 V
Switching Frequency
Output Trim Range
I/O Isolation Voltage
Isolation Capacitance
Output Voltage Trim Range
Over Temperature Protection
Over Voltage Protection
V
O
=3.3 V
V
O
=5.0 V
V
O
=12.0 V
V
O
=15.0 V
V
O
=24.0 V
MTBF
Dimensions
Inches (L
×
W
×
H)
Millimeters (L
×
W
×
H)
Weight
-
2.0 x 1.0 x 0.438
50.8 x 25.4 x 11.14
20 g
85%
87%
87%
87%
86%
200 kHz
90% V
O
1500 V
-
90%
-
3.9 V
5.7 V
13.6 V
18.0 V
28.8 V
88%
90%
90%
90%
89%
230 kHz
-
-
1500 pF
-
110
°C
-
-
-
-
-
2,602,427 hours
-
-
-
-
-
260 kHz
110% V
O
-
-
110%
-
5.0 V
7.0 V
14.2 V
22.5 V
36.0 V
Measured at V
in
=48 V, I
O
=Io, max
Min
Typ
Max
Notes
Test condition of Over Voltage Protection:
Vin=48 V, Io=100% load at 25
°C
ambient.
Calculated Per Bell Core SR-332 (I
O
= 80%
load; Vin=48 V; Vo=3.3 V; T
a
= 25
°C)
-
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
3.3 Vdc - 24 Vdc/7 A - 1.25 A Output
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
-0.3 V
3.5 V
-0.3 V
3.5 V
0.3 mA
-
-
-
-
-
0.8 V
12 V
0.8 V
12 V
0.75 mA
The remote On/Off pin open,
Unit On.
Min
Typ
Max
Notes
Active High
Output Trim Equations
Equations for calculating the trim resistor (in kΩ) given the desired adjusted voltage (Vadj) and the nominal
output voltage of the converter (Vnom) 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
R
trim
_
down
A
=
−
B
V
nom
−
V
adj
Rtrim_down
Module
Trim
GND
Vout
R
trim
_
up
=
C
−
D
V
adj
−
V
nom
Module
Trim
Rtrim_up
GND
Vnom
24.0
15.0
12.0
5.0
3.3
A
272.305
92.125
53.320
19.300
21.711
B
15.664
9.360
9.260
15.120
40.610
C
31.634
18.400
14.025
6.350
13.032
D
3.010
2.000
3.650
10.000
30.100
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
3.3 Vdc - 24 Vdc/7 A - 1.25 A Output
Efficiency Data
95%
90%
85%
80%
75%
70%
65%
60%
55%
50%
0.5A
90%
85%
EFFICIENCY
EFFICIENCY
80%
75%
70%
65%
60%
55%
50%
0.7A
1.75A
3.5A
5.25A
7A
OUTPUT CURRENT (A)
36V
48V
75V
36
48
75
1.25A
2.5A
3.75A
5A
OUTPUT CURRENT (A)
0RLC-25T033
0RLC-25T050
95%
90%
85%
80%
75%
70%
65%
60%
55%
50%
0.25A
0.625A
1.25A
1.875A
2.5A
OUTPUT CURRENT (A)
36
48
75
95%
90%
85%
80%
75%
70%
65%
60%
55%
50%
0.2A
0.5A
1.0A
1.5A
2.0A
OUTPUT CURRENT (A)
EFFICIENCY
0RLC-25T120
EFFICIENCY
36
48
75
0RLC-25T150
95%
90%
85%
80%
75%
70%
65%
60%
55%
50%
0.125A
0.3215A
0.625A
0.9375A
1.25A
OUTPUT CURRENT (A)
EFFICIENCY
36
48
75
0RLC-25T240
Bel Fuse Inc.
206 Van Vorst Street, Jersey City, NJ 07302
•
Tel 201-432-0463
•
Fax 201-432-9542
•
www.belfuse.com
京公网安备 11010802033920号
EEWORLD
