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WRA_CS-3W & WRB_CS-3W Series
3W, WIDE INPUT, ISOLATED & REGULATED DUAL/SINGLE OUTPUT DC-DC CONVERTER
multi-country patent protection
FEATURES
Miniature SIP Package Wide (2:1) Input Range Regulated Outputs I/0 Isolation 1500VDC Short Circuit Protection(automatic recovery) Internal SMD construction Operating Temperature: -40C to +85C External On/Off control RoHS Compliance
RoHS
PRODUCT PROGRAM
Input Part Number Nominal WRA1205CS-3W WRA1209CS-3W WRA1212CS-3W WRA1215CS-3W WRB1205CS-3W WRB1209CS-3W WRB1212CS-3W 12 9.0-18 22 Voltage (VDC) Range Max* Voltage (VDC) 5 9 12 15 5 9 12 15 5 9 12 24 18-36 40 15 5 9 12 15 Output Current (mA) Max 300 167 125 100 600 333 250 200 300 167 125 100 600 333 250 200 Min 30 17 13 10 60 33 25 20 30 17 13 10 60 33 25 20 74 76 78 80 74 76 78 80 76 78 80 81 76 78 80 81 Efficiency (%, Typ)
APPLICATIONS
The WRA_CS-3W & WRB-CS-3W Series are specially designed for applications where a wide range input voltage power supplies are isolated from the input power supply in a distributed power supply system on a circuit board. These products apply to: 1) Where the voltage of the input power supply is wide range (voltage range2:1); 2) Where isolation is necessary between input and output(Isolation Voltage1500VDC); 3) Where the regulation of the output voltage and the output ripple noise are demanded.
WRB1215CS-3W WRA2405CS-3W WRA2409CS-3W WRA2412CS-3W WRA2415CS-3W WRB2405CS-3W WRB2409CS-3W WRB2412CS-3W WRB2415CS-3W
*Input voltage can't exceed this value, or will cause the permanent damage. Note: The load shouldn't be less than 10%, otherwise ripple will increase dramatically. Operation under 10% load will not damage the converter; However, they may not meet all specification listed.
COMMON SPECIFICATION
Item Test Conditions Min Typ Max 95 -40 -55 15 1.5mm from case for 10 seconds Tested for 1 minute and 1mA max 1500 Test at 500VDC 100KHz,1V 1000 80 100 Free Air Convection Plastic (UL94-V0) Continuous, Automatic Recovery 1000 6 K hours g 300 VDC M PF mW 85 125 C Units %
MODEL SELECTION
WRA1205CS-3W
Rated Power Package Style Output Voltage Input Voltage Product Series
Storage Humidity Operating Temperature Storage Temperature Temp. Rise at Full Load Lead Temperature Isolation voltage Isolation resistance
MORNSUN Science& Technology co.,Ltd. Address: 2th floor 6th building, Huangzhou Industrial District, Guangzhou, China Tel: 86-20-38601850 Fax: 86-20-38601272 Http://www.mornsun-power.com
Isolation capacitance No-load Power Consumption Cooling Case Material Short Circuit Protection MTBF Weight
MORNSUN reserves the copyright
Specifications subject to change without notice.
WRA_CS-3W & WRB_CS-3W
A/1-2008
Page 1 of 2
OUTPUT SPECIFICATIONS
Item Output Power Positive voltage accuracy Test Conditions See below products program Refer to recommended circuit Min 0.3 1 3 0.5 0.5 0.2 Typ Max 3 3 5 0.75 1.0 0.5 0.03 50 300 100 %/C mVp-p KHz % Units W
Recommended circuit If you want to further decrease the input/output ripple, an "LC" filtering network may be connected to the input and output ends of the DC/DC converter, see (Figure 1).
Single Output
Vc Vi n Cin GND
1 7
Negative voltage accuracy Refer to recommended circuit Load Regulation Line Regulation Temperature drift (Vout) Ripple & Noise** Switching Frequency 10% To 100% Load (WRB_CS-3W) 10% To 100% Load (WRA_CS-3W)* Input Voltage From Low To High Refer To Recommended Circuit 20MHz Bandwidth 100% Load, Input Voltage
D1 Ic R
3
Li n 2
6 8
+Vo Co ut 0V
Cs
*Dual output models unbalanced load (25/100%): 5%Max. **Test ripple and noise by "parallel cable" method. See detailed operation instructions at Testing of Power Converter section, application notes.
Note: 1. All specifications measured at TA=25C, humidity<75%, nominal input voltage and rated output load unless otherwise specified. 2. See below recommended circuits for more details.
Dual Output D1 Ic R Vc Lin 2 3 Vin
6 7
Lout Cout Lout Cout
+Vo 0V - Vo
Cin GND 1
TYPICAL TEMPERATURE CURVE
8
(Figure 1) 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:
Operating Temp.( C )
Cin:
Cout: Lin: Lout: Cs:
12V
24V
100uF
10uF-47uF
100uF(Typ.) 4.7H -120H 2.2H-10H 10uF-47uF
OUTLINE DIMENSIONS FOOTPRINT DETAILS
First Angle Projection
2.50 RECOMMENDED FOOTPRINT Top view,grid:2.54mm(0.1inch) diameter:1.00mm(0.039inch) Dual Output & Single Output
123
5678
(Bottom View)
External Capacitor Table(Table 1) Single Vout Cout (uF) Dual Vout Cout (uF) (VDC) (Max) (VDC) (Max) 5 1000 5 680 9 680 9 470 12 470 12 330 15 330 15 220 Input current
3 22.00(0.866)
5
While using unstable power source, please
FOOTPRINT DETAILS 4.10 (Side View) Pin 1 2 3 5 6 7 8
ensure the output voltage and ripple voltage do
Dual GND Vin CTRL NC +Vo 0V -Vo
12.00
0.50
Single GND Vin CTRL NC +Vo 0V CS
not exceed indexes of the converter. The preceding power source must be able to provide for converter sufficient starting current Ip (Figure 2). General:
Input Current(A)
Ip 1.4*Iin-max
Note: Unit:mm(inch) Pin secti on:0.50*0.30mm(0.020*0.012inch) Pin secti on tolerances: 0.10mm( 0.004inch) General tolerances: 0.25mm( 0.010inch)
Ip
NC:No Connection
APPLICATION NOTE
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 as follows: current (Ic) should between 5-10mA, exceeding the maximum 20mA will cause permanence damage to the converterThe value of R Can be derived
Input Voltage Range
Input Voltage (V)
R= Vc-VD-1.0 Ic
No parallel connection or plug and play.
MORNSUN reserves the copyright
Specifications subject to change without notice.
WRA_CS-3W & WRB_CS-3W
A/1-2008
Page 2 of 2

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