Document
DC/DC Converter
URB_YMD-20W Series
20 W, Ultra wide input voltage, isolated & regulated single output DC/DC converter
FEATURES
Wide range of input voltage (4:1)
Efficiency up to 90%
Isolation voltage: 1.5K VDC
Input under-voltage protection,
output over-voltage, over-current, short-circuit
protection, over- temperature protection,
Operating temperature range: -40℃ to +85℃
Meet CISPR22/EN55022 CLASS A
Reverse voltage protection available with A2S
(Chassis mounting) or A4S(DIN-rail mounting)
Low temperature rise, Industrial level
Patent Protection RoHS
specifications
URB_YMD-20W series are isolated 20W DC-DC products with 4:1 input voltage. They feature efficiency up to 90%, 1500VDC isolation,
operating temperature of -40℃~+85℃, Input under-voltage protection, output over-voltage protection, over-current protection,
over-temperature protection, short-circuit protection and EMI meets CISPR22/EN55022 CLASS A, which make them widely applied in battery power supplies, industrial control, electricity, instruments, communication fields. And extension package A2S and A4S also enable them with reverse voltage protection.
Selection Guide
Part No. ① URB2403YMD-20W
Input Voltage (VDC)
Nominal (Range)
Max.②
Output
Output Voltage (VDC)
Output Current (mA)
(Max./Min.)
3.3 5000/250
Efficiency ③(%,Min./Typ.)
@ Full Load
85/87
Max. Capacitive Load(µF)
10300
URB2405YMD-20W URB2412YMD-20W
24 (9-36)
40
5
4000/200
88/90
12 1667/84 88/90
5400 1200
URB2415YMD-20W
15 1333/67 88/90
750
URB4803YMD-20W
3.3 5000/250 86/88
10300
URB4805YMD-20W URB4812YMD-20W
48 (18-75)
80
5
4000/200
88/90
12 1667/84 88/90
5400 1200
URB4815YMD-20W
15 1333/67 88/90
750
Note: ○1 Part No. with suffix “H” are heat sink mounting, series with suffix "A2S" are chassis mounting, with suffix "A4S" are DIN-Rail mounting, for example
URB2405YMD-20WHA2S is chassis mounting with heat sink, URB2405YMD-20WA4S is DIN-Rail mounting without heat sink. If the application has a higher
requirement for heat dissipation, you can choose modules with heat sink. ○2 Exceeding the maximum input voltage may cause permanent damage; ○3 The efficiency of "A2S" and "A4S" is approx. 2% lower for the protection of inverse polarity.
Input Specifications
Item Input Current (full load / no-load) Reflected Ripple Current Input impulse Voltage (1sec. max.)
Starting Voltage
Under-Voltage Shutdown
Ctrl*
Input Filter
Operating Conditions 24VDC input 48VDC input
24VDC input 48VDC input 24VDC input 48VDC input 24VDC input 48VDC input Module turn-on Module turn-off Input current when switched off
Min. Typ. Max.
Unit
--
925/60
947/146
--
463/30
474/73
mA
-- 30
--
-0.7 -- 50
-0.7 -- 100
--
--
9 VDC
-- -- 18
6 -- --
15 -- --
Ctrl pin floating or connected to TTL high level(2.5-12VDC)
Ctrl pin connected to GND or low level(0-1.2VDC)
-- 5 -- mA
Pi filter
2015.8.31-A/4
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MORNSUN Guangzhou Science & Technology Co., Ltd. reserves the copyright and right of final interpretation
DC/DC Converter
URB_YMD-20W Series
Hot Plug
Note: * The voltage of Ctrl pin is relative to input pin GND.
Unavailable
Output Specifications
Item
Operating Conditions
Min. Typ. Max.
Output Voltage Accuracy
-- ±1 ±3
Line Regulation
Full load, the input voltage is from low to high
--
±0.2 ±0.5
Load Regulation
5%-100% load
-- ±0.5 ±1
Transient Recovery Time Transient Response Deviation Temperature Coefficient
25% load step change Full load
-- 300 500 -- ±3 ±5 -- ±0.02 --
Ripple & Noise*
20MHz bandwidth
-- 50 120
Trim -- ±10%Vo --
3.3V output
-- 3.9 --
Over-voltage Protection
5V output 12V output
-- 6.2 --- 15 --
15V output
-- 18 --
Over-current Protection Short circuit Protection
Input voltage range
-- 150 -Continuous
Note: *Ripple and noise are measured by “parallel cable” method, please see DC-DC Converter Application Notes for specific operation.
General Specifications
Item
Operating Conditions
Isolation Voltage
Input-output, with the test time of 1 minute and the leak current lower than 1mA
Isolation Resistance
Input-output, isolation voltage 500VDC
Isolation Capacitance
Input-output, 100KHz/0.1V
Operating Temperature
Derating when operating temperature up to ≥71℃ (see Fig. 1)
Storage Temperature
Pin Welding Resistance Temperature
Welding spot is 1.5mm away from the casing, 10 seconds
Storage Humidity
Non-condensing
Switching Frequency
PWM Mode
Over- temperature Protection Input voltage range
MTBF
MIL-HDBK-217F@25℃
Min.
1500
1000 --
-40
-55 -5 --1000
Typ. --
-1000
--
---320 110 --
Max. --
---
85
125 300 95 ----
Physical Specifications
Casing Material
Dimension
Without heatsink With heatsink
Weight
Without heatsink With heatsink
Cooling Method
DIP A2S chassis mounting A4S DIN-Rail mounting DIP A2S chassis mounting A4S DIN-Rail mounting DIP/A2S chassis mounting/A4S DIN-Rail mounting DIP/A2S chassis mounting/A4.