DC/DC Converter

URB_MT-3WR3 Series

2015.09.01-A/2

Page 4 of 5

MORNSUN Guangzhou Science & Technology Co., Ltd. reserves the copyright and right of final interpretation

2. EMC solution-recommended circuit

Vin

GND

+Vo

0V

DC/DC

LOAD

C3

LDM1

②

C1

MOV

FUSE

①

C2

CY

Vin

GND

+

1

C4

C0

+

Fig. 3

Notes: Part ① in the Fig. 3 is used for EMS test and part ② for EMI filtering;

selected based on needs.

Parameter description

Model

Vin:24V

Vin:48V

FUSE

Choose according to actual input current

MOV

S14K35

S14K60

C0,C1

330µF/50V

330µF/100V

C2,C3

4.7µF/50V

4.7µF/100V

C4

Refer to the Cout in Fig.2

LDM1

12µH

CY1

1nF/2KV

EMC solution-recommended circuit PCB layout

Fig. 4

Note: the min. distance of the bonding pads between input & output isolation capacitors (CY1) shall be ≥ 2mm.

3. It is not allowed to connect modules output in parallel to enlarge the power

download the Selection Guide of EMC Filter

Dimensions and Recommended Layout