ISL8002 View Datasheet(PDF) - Intersil
Part Name
Description
View to exact match
ISL8002 Datasheet PDF : 24 Pages
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60
45
30
15
0
-15
-30
100
180
150
120
90
60
30
0
100
ISL8002, ISL8002A, ISL80019, ISL80019A
1k
10k
100k
FREQUENCY (Hz)
Layout Considerations
The PCB layout is a very important converter design step to make
sure the designed converter works well. The power loop is
composed of the output inductor L’s, the output capacitor COUT,
the PHASE’s pins, and the PGND pin. It is necessary to make the
power loop as small as possible and the connecting traces
among them should be direct, short and wide. The switching
node of the converter, the PHASE pins, and the traces connected
to the node are very noisy, so keep the voltage feedback trace
away from these noisy traces. The input capacitor should be
placed as closely as possible to the VIN pin and the ground of the
input and output capacitors should be connected as closely as
possible. The heat of the IC is mainly dissipated through the
1M
thermal pad. Maximizing the copper area connected to the
thermal pad is preferable. In addition, a solid ground plane is
helpful for better EMI performance. It is recommended to add at
least 4 vias ground connection within the pad for the best
thermal relief.
1k
10k
100k
1M
FREQUENCY (Hz)
FIGURE 57. SIMULATED LOOP GAIN
21
FN7888.2
July 30, 2013
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