URF_LP-20WR3 series are isolated 20W DC-DC products with 4:1 input voltage. They feature efficiency up to 89%, 1500VDC isolation,
operating temperature of -40
℃
~+85
℃
, Input under-voltage protection, output short circuit protection, over-voltage protection,
over-current protection and EMI meets CISPR22/EN55022 CLASS A, which make them widely applied in power industry, data transmission
device, battery power supply device, tele-comunication device, distributed power supply system, remote control system, industrial robot
system etc. And extension package A2S and A4S also enable them with reverse voltage protection.
Selection Guide
Certification
Part No.
①
Input Voltage (VDC)
Nominal
②
Max.
(Range)
Output
Output Voltage Output Current (mA)
(Max./Min.)
(VDC)
3.3
5
9
12
15
24
3.3
5
5000/0
4000/0
2222/0
1667/0
1334/0
833/0
5000/0
4000/0
1667/0
1334/0
833/0
Efficiency
(%,Min./Typ.)
@ Full Load
③
Max. Capacitive
Load(µF)
10000
10000
4700
1600
1000
500
10000
10000
1600
1000
500
URF2403LP-20WR3
URF2405LP-20WR3
URF2409LP-20WR3
URF2412LP-20WR3
URF2415LP-20WR3
UL/CE/CB
URF2424LP-20WR3
URF4803LP-20WR3
URF4805LP-20WR3
URF4812LP-20WR3
URF4815LP-20WR3
URF4824LP-20WR3
48
(18-75)
80
24
(9-36)
40
84/86
87/89
86/88
86/88
87/89
87/89
84/86
86/88
86/88
87/89
87/89
12
15
24
Notes：
①
product model with a suffix of “A2S” means chassis mounting and that with a suffix of “A4S” indicates DIN-Rail mounting (e.g. URF2405LP-20WR3A2S means
chassis mounting; URF2405LP-20WR3A4S means DIN-Rail mounting );
②Absolute
maximum rating without damage on the converter, but it isn't recommended;
③Efficiency
is measured In nominal input voltage and rated output load;A2S (wiring) and A4S (rail) Model due to input reverse polarity protection, minimum
efficiency greater than Min.-2 is qualified.
Input Specifications
Item
Operating Conditions
3.3V output
24VDC input
Input Current (full load / no-load)
48VDC input
24VDC input
48VDC input
5V output
Other output
3.3V output
5V output
Other output
Reflected Ripple Current
Min.
--
--
--
--
--
--
--
--
Typ.
799/40
936/40
947/9
400/20
473/20
473/5
30
30
Max.
818/45
958/45
967/12
409/25
484/25
484/8
--
--
Unit
mA
2015.08.12-A/2
Page 1 of 6
MORNSUN Guangzhou Science & Technology Co., Ltd. reserves the copyright and right of final interpretation
DC/DC Converter
URF_LP-20WR3 Series
Input impulse Voltage (1sec. max.)
Starting Voltage
under-voltage turn-off
Starting Time
Input Filter
Hot Plug
Module switch on
Ctrl
*
Module switch off
Input current when switched off
Note: *The voltage of Ctrl pin is relative to input pin GND.
24VDC input
48VDC input
24VDC input
48VDC input
24VDC input
48VDC input
①
-0.7
-0.7
--
--
5.5
14.0
--
--
--
--
--
6.5
15.5
10
Pi filter
Unavailable
50
100
9
18
--
--
--
VDC
VDC
Nominal input& constant resistance load
ms
Ctrl suspended or connected to TTL high level (3.5-12VDC)
Ctrl pin connected to GND or low level (0-1.2VDC)
--
4
7
mA
Output Specifications
Item
Output Voltage Accuracy
Line Regulation
Load Regulation
Transient Recovery Time
Transient Response Deviation
Temperature Drift Coefficient
Ripple & Noise
*
Over-voltage Protection
Output Voltage Regulation Trim
Over-current Protection
Short circuit Protection
Input voltage range
25% load step change
Full load
20MHz bandwidth,5%-100% load
3.3V,5V output
Others
Full load, the input voltage is from low voltage to
high voltage
0%-100% load
Operating Conditions
Min.
--
--
--
--
--
--
--
--
110
--
110
Typ.
±1
±0.2
±0.5
300
±5
±3
--
50
--
±10
--
Max.
±3
±0.5
±1
500
±8
±5
±0.03
100
160
--
190
Unit
%
µs
%
%/℃
mV p-p
%Vo
%Vo
%Io
Hiccup, continuous, self-recovery
Note: *Ripple and noise are measured by “parallel cable” method, please see DC-DC Converter Application Notes for specific operation.
0%-5% load ripple&Noise is no more than 5%Vo.
General Specifications
Item
Insulation Voltage
Insulation Resistance
Isolation Capacitance
Operating Temperature
Storage Temperature
Storage Humidity
Pin Welding Resistance
Temperature
Vibration
Switching Frequency
*
MTBF
PWM mode
MIL-HDBK-217F@25℃
--
1000
Non-condensing
Welding spot is 1.5mm away from the casing, 10
seconds
Operating Conditions
Input-output, with the test time of 1 minute and the
leak current lower than 1mA
Input-output, insulation voltage 500VDC
Input-output, 100KHz/0.1V
Derating if the temperature is
≥55℃
(see Fig. 1)
Min.
3000
1000
--
-40
-55
5
--
Typ.
--
--
500
--
--
--
--
Max.
--
--
--
+85
+125
95
+300
Unit
VDC
MΩ
pF
℃
%RH
℃
10-55Hz, 10G, 30 Min. along X, Y and Z
270
--
--
--
KHz
K hours
Note:*This series of products using reduced frequency technology, the switching frequency is test value of full load,When the load is reduced to below 50%, the
switching frequency decreases with decreasing load.
Physical Specifications
Casing Material
Package Dimensions
Horizontal package
A2S wiring package
Plastic (UL94-V0)
51.50*26.50*12.00 mm
76.00*31.50*21.20 mm
2015.08.12-A/2
Page 2 of 6
MORNSUN Guangzhou Science & Technology Co., Ltd. reserves the copyright and right of final interpretation
模拟电子
京公网安备 11010802033920号
Copyright © 2005-2026 EEWORLD.com.cn, Inc. All rights reserved
电子工程世界
