ACT4060A
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.
Ceramic cap C1 is closely placed across V
IN
and
GND of the IC, as close as possible.
Rev 1, 25-Jun-09
Figure 3:
ACT4060A PCB Layout Reference
R3
EN
C2
R2
R1
Multiple Vias
8
7
6
5
GND
U1
INPUT
C4
C3
VIN+
C1
D1
1
2
3
4
GND
OUTPUT
VOUT
L1
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TM
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