ACT4060A

Rev 1, 25-Jun-09

Innovative Power

TM

- 7 -

www.active-semi.com

Copyright © 2009 Active-Semi, Inc.

ACT4060A PCB Layout Guidelines.

Place all the power components (Diode, Inductor,

filter Capacitors) as close as possible. Use short

and wide trace between them.

If double layer PCB is used, it is good if the bottom

layer is almost fill as ground. Use ground planes for

power ground and signal ground, connect signal

ground and power ground at single point close to

the IC GND.

Arrange the power components so that the

switching current loop curl in the same direction.

Separate noise sensitive traces, such as the

voltage feedback path, compensation from noisy

sources such as inductor, diode, input capacitor.

Place

components,

such

as

compensation,

feedback network and boost-trap capacitors, as

close to the IC as possible.

GND of the IC, as close as possible.

Figure 3:

ACT4060A PCB Layout Reference

1

2

3

4

5

6

7

8

C1

C3

R1

R2

R3

C2

C4

U1

D1

L1

INPUT

GND

VIN+

VOUT

GND

OUTPUT

Multiple Vias

EN