Rev D

PSLS03 SERIES

3 Watts

AC/DC Converter

Single Output

1/9/2018

Wall Industries, Inc. • 37 Industrial Drive, Exeter, NH 03833 • Tel: 603-778-2300 • Toll Free: 888-597-9255 •

Fax 603-778-9797

website: www.wallindustries.com • e-mail: sales@wallindustries.com

Page 5 of 6

DESIGN REFERENCE

1. Typical Application Circuit

Model

FUSE

(Necessary)

C1

(Necessary)

L2

NTC

C2

(Necessary)

L1

(Necessary)

C3

(Necessary)

C4

CY0

TVS

PSLS03-15B03S(-F)

1A/300V

10µF/400V

(-20 to +85ºC)

22µF/450V

(-40 to +85ºC)

4.7mH

13D-5

270µF16V

(Solid

Capacitor)

4.7µH

120µF/25V

0.1µF/

50V

1nF/400

VAC

SMBJ7.0A

PSLS03-15B05S(-F)

68µF/35V

PSLS03-15B09S(-F)

SMBJ12A

PSLS03-15B12S(-F)

SMBJ20A

PSLS03-15B15S(-F)

470µF/35V

47µF/35V

PSLS03-15B24S(-F)

220µF/35V

SMBJ30A

Note:

C1: AC Input, C1 is input filer capacitor (required)

DC Input is a filtering capacitor in EMC filter (required)

R1: Limit current resistance, the value of R1 is 12Ω, 2W; if the capacitance value of C1≥22µF, you cannot take.

C2 and C3 are output flier capacitors (required), C2, C3 and L1 form a pi-type filter circuit, they are recommended to be high frequency

and low impedance electrolytic capacitors. Capacitance and rated ripple current of capacitors refer to the data sheets provided by factory.

Capacitor voltage reduced to at least 80%. C4 is a ceramic capacitor, which is used to filter high frequency noise. Current of L1 and L2

refer to the data sheets provided by factory. Current rating should be 80%. TVS is a recommended component to protect post-circuit (if

converter fails). External input NTC model is recommended to use 13D-5. External input MOV model is recommended to us S14K350.

2. EMC Solution-Recommended Circuit

Components

Recommended Parameter

MOV2

S14K350

CY1

2.2nF/400VAC

CY2/CY3

1nF/400VAC

CX

0.1µF/310VAC

LCM

3.5mH

LDM

0.33mH

R2/R3

12Ω/2W

FUSE (Required)

1A/300V, Slow Fusing