Rev B

PSLS03 SERIES

3 Watts

AC/DC Converter

Single Output

11/10/2016

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

Note: 1 is Pi filter circuit

Model

FUSE

(Required)

C1

(Required)

L2

C2

(Required)

L1

(Required)

C3

(Required)

C4

CY0

TVS

PSLS03-15B03SR2S(-F)

1A/250V

10µF/400V

4.7mH

330µF

2.2µGH

120µF/25V

0.1µF/50V

1nF/400VAC

SMBJ7.0A

PSLS03-15B05SR2S(-F)

68µF/35V

PSLS03-15B09SR2S(-F)

SMBJ12A

PSLS03-15B12SR2S(-F)

150µF/35V

SMBJ20A

PSLS03-15B15SR2S(-F)

PSLS03-15B24SR2S(-F)

100µF/35V

SMBJ30A

Note:

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

DC Input is a filtering capacitor in EMC filter, the value of C1 is 10µF/400V (when input voltage is above 370VDC, and the value of

C1 is 10µF/450V). 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. Voltage derating of capacitors should 80% or above. 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% or above. 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 S14K320.

2. EMC Solution-Recommended Circuit

Suggestions for safety regulation and wiring width: wire width ≥3mm, distance between wires ≥6mm, and distance between wire and ground ≥6mm, A≥6.4mm

Components

Recommended Parameter

MOV2

S14K320

CY1

1nF/400VAC

CY2

1nF/400VAC

CX

0.1µF/275VAC

LCM

3.5mH

LDM

0.33mH

NTC

13D-5

FUSE (Required)

1A/250V, Slow Fusing