The copyright and authority for the interpretation of the products are reserved by MORNSUN
WRE_S-3WR2 & WRF_S-3WR2 2013.07.26-A/3 Page 3 of 7
Storage Temperature -55 -- 125
Temp. rise at full load Ta=25°C -- 25 --
Lead Temperature 1.5mm from case for 10 seconds -- -- 300
°C
Cooling
Free air convection
CE
CISPR22/EN55022 CLASS B(Recommended Circuit Refer to Figure1- or Figure 3② )
EMI
RE CISPR22/EN55022 CLASS B (Recommended Circuit Refer to Figure1- or Figure 3② )
ESD IEC/EN61000-4-2 Contact ±4KV/ Air ±8KV perf. Criteria B
RS
IEC/EN61000-4-3 10V/m perf. Criteria A
IEC/EN61000-4-4 ±2KV
(Recommended Circuit Refer to Figure1-①)
perf. Criteria B
EFT
IEC/EN61000-4-4 ±4KV
(Recommended Circuit Refer to Figure 3)
perf. Criteria B
Surge
IEC/EN61000-4-5 ±2KV
(Recommended Circuit Refer to Figure1-① or Figure 3)
perf. Criteria B
CS
IEC/EN61000-4-6 3 Vr.m.s perf. Criteria A
EMS
Voltage dips, short and
interruptions immunity
IEC/EN61000-4-29 0%-70%
perf. Criteria B
EMC RECOMMENDED CIRCUIT
LDM2
②
C0
TVS
LDM1
MOV
FUSE
①
C1
+
Vin
GND
+Vo
-Vo
(0V)
EUT
LOAD
C2
CY
Ctrl
Cd
D1
R
③
Ctrl
Vin
GND
(Figure1)
Recommended external circuit parameters:
Model
Vin:5V
Vin:12V Vin:24V Vin:48V
FUSE Choose according to practical input current
MOV
-- --
S14K35 S14K60
LDM1
-- --
56μH 56μH
TVS SMCJ13A SMCJ28A SMCJ48A SMCJ90A
C0 680μF/16V 680μF/25V 330μF/50V 330μF/100V
C1 4.7μF/50V 4.7μF/100V
LDM2 12μH
C2 4.7μF/50V 4.7μF/100V
CY 1nF/3KV
D1 RB160M-60/1A
R
Follows:
300-
0.1--
C
DC
I
VV
R =
Cd 47nF/100V
Note: 1.In Figure 1, part ① is EMS recommended external circuit, part ② is EMI recommended external circuit. Choose according to requirements;
2. V
C
is the voltage to GND from Ctrl, V
D
is the forward conduction voltage drop of D1,I
C
is the current through Ctrl pin which is normally 5-10mA, the external
circuit of Ctrl is as shown in figure1-③;
3. If there is no recommended parameters, the model no require the external component.
EMC RECOMMENDED CIRCUIT PCB LAYOUT
DUAL