WRB4812YQD-20W [MICRODC]
20W,WIDEINPUT, ISOLATED & REGULATED DUAL/SINGLE OUTPUTDC-DCCONVERTER; 20W ， WIDEINPUT ，隔离稳压正负双路/单OUTPUTDC - DCCONVERTER
| 型号： | WRB4812YQD-20W |
| 厂家： | 
MICRODC POWER TECHNOLOGY CO., LTD |
| 描述： | 20W,WIDEINPUT, ISOLATED & REGULATED DUAL/SINGLE OUTPUTDC-DCCONVERTER |
| 文件： | 总3页 (文件大小：687K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
WRA-YQD-20&WRB-YQD-20W Series
20W, WIDE INPUT, ISOLATED & REGULATED DUAL/SINGLE OUTPUT DC-DC CONVERTER
SELECTION GUIDE
Input voltage range
(VDC)
Output voltage
(VDC)
Output current
max.(mA)
Order code
Efficiency typ.(%)
WRA1205YQD-20W
WRA1212YQD-20W
WRA1215YQD-20W
WRA1224YQD-20W
WRA2405YQD-20W
WRA2412YQD-20W
WRA2415YQD-20W
WRA2424YQD-20W
WRA4805YQD-20W
WRA4812YQD-20W
WRA4815YQD-20W
WRA4824YQD-20W
WRB1205YQD-20W
WRB1212YQD-20W
WRB1215YQD-20W
WRB1224YQD-20W
WRB2405YQD-20W
WRB2412YQD-20W
WRB2415YQD-20W
WRB2424YQD-20W
WRB4805YQD-20W
WRB4812YQD-20W
WRB4815YQD-20W
WRB4824YQD-20W
9~18
9~18
±5
±12
±15
±24
±5
±12
±15
±24
±5
±12
±15
±24
5
±2000
±833
±667
±417
±2000
±833
±667
±417
±2000
±833
±667
±417
4000
1667
1333
833
78
82
80
83
79
82
83
78
80
84
85
78
79
80
80
78
82
82
83
78
80
84
85
79
9~18
9~18
FEATURES
18~36
18~36
18~36
18~36
36~72
36~72
36~72
36~72
9~18
◆Wide 2:1 DC input range
◆In/out capacitance1000pF
◆Protections : Short circuit / Overload / Over voltage
◆1500VDC I/O isolation for D/D
◆Cooling by free air convection
◆Built-in remote ON-OFF control
◆100% full load burn-in test
◆Fixed switching frequency at 225KHz
◆Lost cost
9~18
12
9~18
15
9~18
24
18~36
18~36
18~36
18~36
36~72
36~72
36~72
36~72
5
4000
1667
1333
833
12
15
24
◆MTBF>1000Khours
5
4000
1667
1333
833
◆High reliability
12
15
◆3 year warranty
24
MODEL SELECTION
①
②
③
④
⑤
⑥
WRB 24 12 Y QD -20W(1667)
①Product Series ②Input Voltage
③Output Voltage ④Wide (2:1) Input Range
⑤2"×2"DIP Package Style
SPECIFICATION
Ripple&Noise(max.)
(Note.2)
100mVp-p
±0.5%
⑥Rated Power(Output current)
OUTPUT
Line Regulation
Load Regulation
(Note.3)
(Note.4)
±0.5%
Above 105% rated output power
APPLICATIONS
Overload
Protection type : Over power limiting, recovers automatically after fault
condition is removed
The WRA(B)-YQD-20W Series of DC/DC
converters has been designed for a wide range of
applications including communications, industrial
systems and battery powered mobile equipments.
Key features are high power density and 2:1 wide
input ranges of 18~36 VDC and 36~72 VDC.(But
also can do high power density and 4:1 ultrawide
input ranges of 9~36 VDC and 18~72 VDC.)
XX03 :3.8~4.95V
XX12:13.8 ~ 18V
XX05 :5.75 ~ 7.5V
PROTECTION
Over Voltage
XX15:17.25 ~ 22.5V
Protection type : Shut off o/p voltage, clamping by zener diode
Protection type : Constant current limiting, recovers automatically after
fault condition is removed
Short Circuit
Logic "1" or open: power on
FUNCTION
ON/OFF Control
Logic "0" short to Vin-: power off
Working Temp.
-25~+85℃(Refer to output load derating curve)
ENVIRONMENT
Storage Temp.,Humidity
Temp. Coefficient
-25~+85℃, 0~95% RH
±0.03%/ ℃（0~50℃）
Design refer to LVD
Safety Standards
Isolation Voltage
Isolation Resistance
SAFETY&EMC
(Note 5)
I/P-O/P:1.5KVDC
I/P-O/P:100M Ohms/500VDC
MTBF
322.4K hrs min.
MIL-HDBK-217F (25℃)
OTHERS
Dimension
Packing
50.8×50.8×16mm (2"×2"×0.63") (L×W×H)
110g;150pcs/15.8Kg/0.97CUFT
MICRODC RESERVES THE COPYRIGHT
1. All parameters are specified at normal input, rated load, 2570% RH ambient.
2. Ripple & noise are measured at 20MHz of bandwidth by using a 12" twisted
pair-wire terminated with a 0.1uf & 47uf parallel capacitor.
NOTE
3.Line regulation is measured from low line to high line at rated load.
4.Load regulation is measured from 10% to 100%rated load
5. Please prevent the converter from operating in overload or short circuit condition for
more than 30 seconds.
http://www.microdc.cn
Technical Enquiries-Email:tech@microdc.cn Tel:0086-20-86000646
Page 1 of 3
WRA-YQD-20&WRB-YQD-20W Series
SINGLE OUTPUT(WRB-YQD-20W)
Mechanical Specification
Pin
1
Assignment
+Vin
Pin
6
Assignment
+Vout
2
-Vin
7
-Vout
3,5
4
No pin
8
Trim
CTRL (ON/OFF)
DUAL OUTPUT(WRA-YQD-20W)
Pin
1
Assignment
+Vin
Pin
5
Assignment
+Vout
2
-Vin
6
Common
-Vout
3
No pin
7
Unit:mm
Pin section tolerances:±0.10mm
General tolerances:±0.25mm
CTRL (ON/OFF)
4
8
Trim
APPLICATION NOTE
TYPICAL CHARACTERISTICS
Requirement on output load
Temperature Derating Graph
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 WR-YQD-20W Series have been tested according to the following
recommended testing circuit before leaving factory.This series should be
tested under load(see Figure 1).
AMBIENT TEMPERATURE (℃)
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:
External Output Trimming
OUTPUTMAYOPTIONALLYBE EXTERNALLYTRIMMED(10%)
A FIXED RESISTER ORAN EXTERNALTRIMPOTAS SHOWN
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 :
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.
General:Ip≤1.6*Iin-max
ON/OFF Control Pin
CONTROL INPUT.....................................PIN4
CONTROL COMMON................................PIN2
LOGIC COMPATIBILITY......CMOS OR OPEN COLLECTOR TTL
CONTROL VOLTAGE
No parallel connection or plug and play
ON..........................................+5.5VDC min OR OPEN CIRCUIT
OFF......................................+2.5VDC max. OR SHORT TO PIN2
http://www.microdc.cn
Technical Enquiries-Email:tech@microdc.cn Tel:0086-20-86000646
Page 2 of 3
WRA-YQD-20&WRB-YQD-20W Series
OUTLINE DIMENSIONS ＆ FOOTPRINT DETAILS
FOSC:225KHz
TUBE OUTLINE DIMENSIONS
RECOMMENDED FOOTPRINT
Unit :mm[inch]
Grid:2.54×2.54mm(0.1×0.1inch)
Diameter:1.00mm(0.039inch)
General tolerances:±0.50mm[±0.020inch]
L=230mm[9.055inch] Tube Quantity: 7pcs
RoHS COMPLIANT INFORMATION
This series is compatible with RoHS soldering systems with a peak wave solder temperature
of 300°C for 10 seconds.
The pin termination finish on the SIP package type is Tin Plate, Hot Dipped over Matte Tin
with Nickel Preplate. The DIP types are Matte Tin over Nickel Preplate. Both types in this
series are backward compatible with Sn/Pb soldering systems.
Microdc Professional Power Module,Inc.
Tel:0086-20-86000646 E-mail:tech@microdc.cn
Website:http://www.microdc.cn
REACH COMPLIANT INFORMATION
This series has proven that this product does not contain harmful chemicals, it also has
harmful chemical substances through the registration, inspection and approval.
http://www.microdc.cn
Technical Enquiries-Email:tech@microdc.cn Tel:0086-20-86000646
Page 3 of 3
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