NCP1575 ON Semiconductor, NCP1575 Datasheet - Page 15

• Manufacturer Part Number: NCP1575
• Description: Low Voltage Synchronous Buck Controller
• Manufacturer: ON Semiconductor

Layout Considerations
1. The fast response time of V
2. The COMP capacitor should be connected via its
the IC’s sensitivity to noise on the V
Fortunately, a simple RC filter, formed by the
feedback network and a small capacitor (100 pF
works well) placed between V
out most noise and provides a system practically
immune to jitter. This capacitor should be located
as close as possible to the IC.
own path to the IC ground. The COMP capacitor
is sensitive to the intermittent ground drops caused
2
technology increases
FB
and GND filters
FB
line.
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NCP1575
15
3. The V
4. The IC should not be placed in the path of
by switching currents. A separate ground path will
reduce the potential for jitter.
should be located as close as possible to the IC.
This capacitor’s connection to GND must be as
short as possible. A 10 W resistor should be placed
close to the V
switching currents. If a ground plane is used, care
should be taken by the designer to ensure that the
IC is not located over a ground or other current
return path.
CC
bypass capacitor (0.1 mF or greater)
CC
pin.