GAPTEC-Electronic GmbH & Co. KG

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3ACOS_S – Rev. 2020-1.0

Specifications subject to change without notice.

3W - Single output AC-DC converter - Universal input - Non-isolated

3ACOS_S Series

Efficiency

Typical application circuit

Model

FUSE (required)

C1 (required)

C2 (required)

L1 (required)

3ACOS_12S

1A/300V

10uF/400V:165-264VAC

10uF/450V:165-305VAC

22uF/400V: 85-264VAC

22uF/450V: 85-305VAC

220µF/16V

1.2mH

Note:

C1 is used as filter capacitor(required), if the surge immunity index is to be met, the C1 capa-

citor needs to be connected to 22uF.

Output filter: We recommend using an electrolytic capacitor with high frequency, high ripple

current and low ESR rating for C2. Combined with L1, they form a pi-type filter circuit. Choose

a Capacitor voltage rating with at least 20% margin, in other words not exceeding 80%.

1ACOS_05S

1ACOS_05S

3ACOS_12S

3ACOS_12S

EMC compliance recommended circuit

Components

Recommended parameter

CX

0.1µF/310VAC

L1

1.2mH

FUSE (required)

1A/300V, slow blow

C1 (required)

10uF/400V:165-264VAC

10uF/450V:165-305VAC

22uF/400V: 85-264VAC

22uF/450V: 85-305VAC

C2 (required)

2.2nF/400V