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WRA_S-3WR2 & WRB_S-3WR2

2013.07.22-A/3

Page 4 of 7

EMC MODULE APPLICATION CIRCUIT

EUT

GND

C trl

-Vo

+ Vo

-Vin

+Vin

FT-A /BX 1D

Lo ad

-Vo

(0V)

+Vo

Vin

Cd

D1

R

C trl

C

+

-V in

+V in

FU SE

FT-A/BX1D is MORNSUN

’s EFT suppresser

For Nominal Voltage<48V, C

≥330uF/50V

For Nominal Voltage =48V, C

≥330uF/100V

(Figure 3)

EMC MODULE RECOMMENDED CIRCUIT PCB LAYOUT

DUAL

SINGLE

(Figure 4)

EMI TEST WAVEFORM (RECOMMENDED CIRCUIT FIGURE1-②)

WRA2415S-3WR2 CE(Class B, Positive line)

WRA2415S-3WR2 CE(Class B, Negative line)

WRB1205S-3WR2 CE(Class B, Positive line)

WRB1205S-3WR2 CE(Class B, Negative line)

PRODUCT TYPICAL PERFORMANCE CURVE

Tolerance Envelope Graph

120

100

80

60

40

20

0

-40

0

40

85 10 5120

Output Curren t Percent (%)

Ambient Temp. ()

℃

Temperature Derating Graph

Safe Operating Area

(Figure 5)