WRA-YQD-20W&WRB-YQD

WRA-YQD-20&WRB-YQD20W
WRA-YQD-20&WRB-YQD-2
20W, WIDE INPUT, ISOLATED & REGULATED DUAL/SINGLE OUTPUT DC-DC CONVERTER
SELECTION GUIDE
Output voltage
(VDC)
Output current
max.(mA)
Efficiency typ.(%)
9~18
±5
±2000
78
9~18
±12
±833
82
WRA1215YQD-20W
9~18
±15
±667
80
WRA1224YQD-20W
9~18
±24
±417
83
WRA2405YQD-20W
18~36
±5
±2000
79
WRA2412YQD-20W
18~36
±12
±833
82
In/out capacitance1000pF
WRA2415YQD-20W
18~36
±15
±667
83
WRA2424YQD-20W
18~36
±24
±417
78
Protections : Short circuit / Overload / Over voltage
WRA4805YQD-20W
36~72
±5
±2000
80
WRA4812YQD-20W
36~72
±12
±833
84
WRA4815YQD-20W
36~72
±15
±667
85
WRA4824YQD-20W
36~72
±24
±417
78
WRB1205YQD-20W
9~18
5
4000
79
WRB1212YQD-20W
9~18
12
1667
80
WRB1215YQD-20W
9~18
15
1333
80
WRB1224YQD-20W
9~18
24
833
78
WRB2405YQD-20W
18~36
5
4000
82
18~36
12
1667
82
FEATURES
◆
Wide 2:1 DC input range
◆
◆
◆
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
Order code
Input voltage range
(VDC)
WRA1205YQD-20W
WRA1212YQD-20W
◆
Lost cost
WRB2412YQD-20W
WRB2415YQD-20W
18~36
15
1333
83
◆
MTBF>1000Khours
WRB2424YQD-20W
18~36
24
833
78
WRB4805YQD-20W
36~72
5
4000
80
WRB4812YQD-20W
36~72
12
1667
84
WRB4815YQD-20W
36~72
15
1333
85
WRB4824YQD-20W
36~72
24
833
79
◆
◆
High reliability
3 year warranty
MODEL SELECTION
①
②
③
④
⑤
⑥
WRB 24 12 Y QD -20W(
0W(1667)
1667)
①Product Series ②Input Voltage
③Output Voltage ④Wide (2:1) Input Range
⑤2"×2"DIP Package Style
⑥Rated Power(Output current)
SPECIFICATION
OUTPUT
APPLICATIONS
(Note.2)
100mVp-p
Line Regulation
(Note.3)
±0.5%
Load Regulation
(Note.4)
±0.5%
Above 105% rated output power
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.)
Overload
PROTECTION
Short Circuit
FUNCTION
SAFETY&EMC
(Note 5)
MICRODC R ESERVES THE COPYRIGHT
Over Voltage
Protection type : Over power limiting, recovers automatically after fault
condition is removed
XX03 :3.8~4.95V
XX05 :5.75 ~ 7.5V
XX12:13.8 ~ 18V
XX15:17.25 ~ 22.5V
Protection type : Shut off o/p voltage, clamping by zener diode
ENVIRONMENT
OTHERS
NOTE
http://www.microdc.cn
Ripple&Noise(max.)
Protection type : Constant current limiting, recovers automatically after
fault condition is removed
ON/OFF Control
Power on: CTRL ~-Vin > 4.5~5.5VDC or open
Power off : CTRL~ -Vin <0.8VDC or short
Working Temp.
-25~+85℃ (Refer to output load derating curve)
Storage Temp.,Humidity
-25~+85℃, 0~95% RH
Temp. Coefficient
±0.03%/ ℃(0~50℃)
Safety Standards
Design refer to LVD
Isolation Voltage
I/P-O/P:1.5KVDC
Isolation Resistance
I/P-O/P:100M Ohms/500VDC
MTBF
320K hrs min.
Dimension
50.8×50.8×16mm (2"×2"×0.63") (L×W×H)
Packing
110g;150pcs/15.8Kg/0.97CUFT
MIL-HDBK-217F (25℃)
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.
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.
Technical Enquiries-Email:[email protected] Tel:0086-20-86000646
Page 1 of 3
WRA-YQD-20&WRB-YQD20W
WRA-YQD-20&WRB-YQD-2
Mechanical Specification
SINGLE OUTPUT(WRB-YQD-20W)
Pin
Assignment
Pin
Assignment
1
+Vin
6
+Vout
2
-Vin
7
-Vout
3,5
No pin
8
Trim
4
CTRL (ON/OFF)
DUAL OUTPUT(WRA-YQD-20W)
Unit:mm
Pin section tolerances:±0.10mm
General tolerances:±0.25mm
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 WR-YQD-20W Series have been tested according to the following
recommended testing circuit before leaving factory.This series should be tested
under load.
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.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 :
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
No parallel connection or plug and play
Pin
Assignment
Pin
Assignment
1
+Vin
5
+Vout
2
-Vin
6
Common
3
No pin
7
-Vout
4
CTRL (ON/OFF)
8
Trim
TYPICAL CHARACTERISTICS
Temperature Derating Graph
AMBIENT TEMPERATURE (℃)
External Output Trimming
ON/OFF Control Pin
CONTROL INPUT.....................................PIN4
CONTROL COMMON................................PIN2
LOGIC COMPATIBILITY......CMOS OR OPEN COLLECTOR TTL
CONTROL VOLTAGE
ON..........................................+5.5VDC min OR OPEN CIRCUIT
OFF......................................+2.5VDC max. OR SHORT TO PIN2
http://www.microdc.cn
Technical Enquiries-Email:[email protected] Tel:0086-20-86000646
Page 2 of 3
WRA-YQD-20&WRB-YQD20W
WRA-YQD-20&WRB-YQD-2
OUTLINE DIMENSIONS & FOOTPRINT DETAILS
FOSC:225KHz
RECOMMENDED FOOTPRINT
TUBE OUTLINE DIMENSIONS
Grid:2.54×2.54mm(0.1×0.1inch)
Unit :mm[inch]
Diameter:1.00mm(0.039inch)
General tolerances:±0.50mm[±0.020inch]
L=230mm[9.055inch] Tube Quantity: 7pcs
RoHS COMPLIANT INFORMATION
Microdc Professional Power Module,Inc.
Tel:0086-20-86000646
E-mail:[email protected]
Website:http://www.microdc.cn
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.
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:[email protected] Tel:0086-20-86000646
Page 3 of 3