WRB4812YMD-12W [MICRODC]
12W, WIDE INPUT, ISOLATED & REGULATED SINGLE OUTPUT DC-DC CONVERTER; 12W ，宽电压输入，隔离稳压单路输出DC -DC转换器
| 型号： | WRB4812YMD-12W |
| 厂家： | 
MICRODC POWER TECHNOLOGY CO., LTD |
| 描述： | 12W, WIDE INPUT, ISOLATED & REGULATED SINGLE OUTPUT DC-DC CONVERTER |
| 文件： | 总3页 (文件大小：583K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
WRA-YMD-12W＆WRB-YMD -12W Series
12W, WIDE INPUT, ISOLATED & REGULATED DUAL/SINGLE OUTPUT DC-DC CONVERTER
SELECTION GUIDE
Input voltage
range
Output
Order code
Output voltage
Efficiency typ.
current max.
WRB2403YMD-2400
WRB2412YMD-12W
WRB2415YMD-12W
WRA2412YMD-12W
WRA2415YMD-12W
WRB4803YMD-2400
WRB4812YMD-12W
WRB4815YMD-12W
WRA4812YMD-12W
WRA4815YMD-12W
18－36 VDC
18－36 VDC
18－36 VDC
18－36 VDC
18－36 VDC
36－72 VDC
36－72 VDC
36－72 VDC
36－72 VDC
36－72 VDC
3.3 VDC
12 VDC
2400 mA
1000 mA
800 mA
78 %
84 %
84 %
84 %
84 %
80 %
84 %
84 %
84 %
84 %
15 VDC
FEATURES
◆Ultrawide 2:1 Input Range 18–36 VDC and
± 12 VDC
±15 VDC
3.3 VDC
12 VDC
± 500 mA
± 400 mA
2400 mA
1000 mA
800 mA
36–72 VDC
◆Input Filter meets EN 55022,Class A and FCC,
Level A without external Components
◆Indefinite Short-Circuit Protection
◆Overvoltage Protection
15 VDC
± 12 VDC
±15 VDC
± 500 mA
± 400 mA
◆I/O-Isolation 1500 VDC
◆2" x 1" Metal Package
Input Specifications
24 Vin models
40 mA typ.
20 mA typ.
425 mA typ.
510 mA typ.
600 mA typ.
215 mA typ.
255 mA typ.
300 mA typ.
42 V max.
◆Insulated Baseplate
Input current(no load)
Input current(full load)
Surge voltage(1 sec. max.)
48 Vin models
24 Vin;
◆MTBF>1000Khours
3.3 Vout models:
5 & ±5 Vout models:
other output models:
3.3 Vout models:
◆Industry Standard Pin out
◆2 Year Product Warranty
24 Vin;
24 Vin;
48 Vin;
MODEL SELECTION
48 Vin;
5 & ±5 Vout models:
other output models:
①
②
③
④
⑤
⑥
⑦
WRB 24 12 Y M D -12W(1000)
48 Vin;
24 Vin models
48 Vin models
①Product Series
③Output Voltage ④Wide (2:1) Input Range
⑤Metal Shield ⑥2" x 1"DIP Package Style
②Input Voltage
84 V max.
Reverse voltage protection
Conducted noise (input)
1.0 A max.
⑦Rated Power(Output current)
EN 55022 level A, FCC part 15, level A
APPLICATIONS
The WRA-YMD-12W ＆ WRB-YMD-12W
Series series of DC/DC converters has been
designed for
a wide range of applications
General Specifications
including communications, industrial systems
and battery powered mobile equipments. Key
features are high power density (12W in a
2“x1“x 0.4“ package) and ultrawide input ranges
of 18–36 VDC and 36–72VDC. Other features of
this converter are internal filtering according to
EN55022, level A, safety approval to EN60950
and UL1950, wide operating temperature range
and remote on/off (opt.).
– Operating
– 40℃～+ 60℃
Temperature ranges
– Case temperature
+ 95℃ max.
– Storage
– 40 ℃～+ 125 ℃
above 60℃: 3% /℃
95 % rel H max.
> 700000 h @ +25℃
1500 VDC
Derating
Humidity
non condensing
MIL-HDBK-217 E
Input/Output
Reliability, calculated MTBF
Isolation voltage
Isolation capacity
Isolation resistance
Input/Output
200 pF typ
Input/Output (500 VDC)
> 1000 M Ohm
400 kHz typ. (Pulse width modulation
PWM)
Switching frequency
fixed
Remote ON/OFF (optional):
This pin can be added
arr-cording to customer’s
need
ON:
2.5～5.5 VDC or open circuit.
0～0.8 VDC or short circuit pin 2 and pin 6
10 mA max.
OFF:
MICRODC RESERVES THE COPYRIGHT
OFF idle current:
UL 1950, EN 60950, IEC 60950
Compliance up to 60 VDC input voltage
(SELV limit)
Safety standards:
Safety approvals:
cUL/UL File E188913
http://www.microdc.cn Technical Enquiries-Email:tech@microdc.cn Tel:0086-20-86000646
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WRA-YMD-12W＆WRB-YMD -12W Series
TYPICAL CHARACTERISTICS
Output Specifications
Temperature Derating Graph
Voltage set accuracy
± 1 %
Regulation
– Input variation Vin min. to Vin max.
± 0.5 % max.
± 0.5 % max.
50 mVpk-pk typ.
± 0.02 % /℃
– Load variation 10 – 90 %
20 MHz Bandwidth
Ripple and noise
Temperature coefficient
Output current limitation
Short circuit protection
Capacitive load
>110% of Iout max. foldback
Hiccup mode, indefinite automatic
recovery)
470 µF max.
– single output models
– dual output models
100 µF max.
Physical Specifications
Case material
Baseplate
Steel chrome-nickel plated
Epoxy
RECOMMENDED CIRCUIT
Potting material
Weight
Silicon rubber (flammability to UL 94 V-0)
30 g (1.2 oz)
Output Graph
Soldering temperature
max. 250℃ / 10 sec.
APPLICATION NOTE
Requirement on output load
In order to ensure the product operate efficiently and reliably,in addition to a
max load(namely full load), a minimum load is specified for this kind of
DC/DC converter.Make sure the specified range of input voltage is not
exceeded,the minimum output load no less than 10% load.If the actual load
is less than the specified minimum load, the output ripple may increase
sharply while its efficiency and reliability will reduce greatly.If the actual
output power is very small,please add an appropriate resistor as extra
loading,or contact our company for other lower output power products.
Recommended Circuit
All the WRA_YMD-12W&WRB_YMD-12W Series have been tested
according to the following recommended testing circuit before leaving
factory.This series should be tested under load(see Figure 1).
If you want to further decrease the input/output ripple,you can increase
capacitance properly or choose capacitors with low ESR.However,the
capacitance of the output filter capacitor must be proper.If the capacitance is
too big,a startup problem might arise.For every channel of output,provided
the safe and reliable operation is ensured,the greatest capacitance of its
filter capacitor sees (Table 1).General:
Cin: 10μF-47μF
Cout: 10μF/100mA
CTRL Terminal
When open or high impedance,the converter work well; When this pin is
‘high’; the converter shutdown; It should be note that the input current (Ic)
should between 5-10mA, exceeding the maximum 20mA will cause
permanence damage to the converter.
The value of R Can be derived as follows :
Output External Capacitor Table(Table 1)
Single Vout
(VDC)
5
Cout
(μF)
680
470
330
Dual Vout
(VDC)
±5
Cout
(μF)
680
330
220
Input current
While using unstable power source,please ensure the output voltage and
ripple voltage do not exceed indexes of the converter.The preceding power
source must be able to provide for converter sufficient starting current
Ip(Figure 2).
General:Ip≤1.6*Iin-max
No parallel connection or plug and play
12
±12
15
±15
http://www.microdc.cn Technical Enquiries-Email:tech@microdc.cn Tel:0086-20-86000646
Page 2 of 3
WRA-YMD-12W＆WRB-YMD -12W Series
OUTLINE DIMENSIONS ＆ FOOTPRINT DETAILS
MECHANICAL DIMENSIONS
RECOMMENDED FOOTPRINT
Note:
Unit:mm[inch]
Pin section tolerances:±0.10mm[±0.004inch]
General tolerances:±0.25mm[±0.010inch]
RECOMMENDED FOOTPRINT
Top view,grid:2.54mm(0.1inch)
diameter:1.00mm(0.039inch)
FOOTPRINT DETAILS
TUBE OUTLINE DIMENSIONS
Pin
1
Single
GND
Vin
Dual
GND
Vin
2
3
+Vo
NC
+Vo
0V
4
5
0V
-Vo
NC:No connection
When the environment temperature is higher than 71℃, the
product output power should be less then 60% of the rated
power.
Note:
Unit :mm[inch]
No parallel connection or plug and play.
General tolerances:±0.50mm[±0.020inch]
L=230mm[9.055inch] Tube Quantity: 7pcs
Use dual output simultaneously,forbid pening output pin (0V)
to use as single output.
Note:
1. The load shouldn't be less than 10%, otherwise ripple will increase dramatically.
2. Operation under 10% load will not damage the converter; However, they may not meet all specification listed.
3. All specifications measured at Ta=25°C, humidity<75%, nominal input voltage and rated output load unless otherwise specified.
4. In this data sheet, all the test methods of indications are based on corporate standards.
5. Only typical models listed, other models may be different, please contact our technical person for more details.
http://www.microdc.cn Technical Enquiries-Email:tech@microdc.cn Tel:0086-20-86000646
Page 3 of 3
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