The copyright and authority for the interpretation of the products are reserved by MORNSUN

Specifications subject to change without notice.

LS03-05BxxS(-F)

2013.09.04-A/3

Page 4 of 5

EMC RECOMMENDED CIRCUIT PCB LAYOUT

(figure 4):EMC application circuit PCB layout

Safety and recommend wiring: linewidth

circuit

EXTERNAL CIRCUIT PARAMETERS

Output Voltage

C1

C2

C3

FUSE

CY

TVS

3.3V

10

µF/400V

1

µF/50V

(Ceramic

capacitor)

150

µF/25V

1A/250V

1nF/400VAC

SMBJ7.0A

5V

9V

SMBJ12A

12V

SMBJ20A

15V

100

µF/35V

24V

SMBJ30A

Note: 1. C1:AC input, is filtering electrolytic capacitor (which is required), when input voltage is below 100VAC, and the value of C1 is 22

μF/400V.

DC input, is a filtering capacitor in EMC Filter, the value of C1 is 10

µF/400V(when input voltage is above 370VDC, and the value of C1 is 10µF/450V), If EMC

performance is not required,C1 could not need.

2. C2 is ceramic capacitor, it is used to filter high frequency noise. Output filtering capacitor C3 (which is required when AC input or DC input) is recommended to

use high frequency and low impedance electrolytic capacitors. For capacitance and current of capacitor please refer to manufacture

’s datasheet. Voltage

derating of capacitor should be 80% or above. TVS is a recommended component to protect post-circuits (if converter fails). External input NTC model is

recommended to use 5D-9. External input MOV model is recommended to use S14K350.

Recommend Parameter For Higher EMC Standard Circuit

Components

Recommend Parameter

MOV2

S10K300

CY1, CY2

1nF/400VAC

CX

0.1

µF/275VAC

LCM

3.5mH

LDM

5mH

FC-L01DV1

MORNSUN

’s 1KV/2KV Surge protector

FUSE

1A/250V, slow blow, it must be connected to FUSE

LS03 DIMENSIONS, RECOMMENDED FOOTPRINT&PACKAGING