AN8016NSH 데이터 시트보기 (PDF) - Panasonic Corporation
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AN8016NSH Datasheet PDF : 17 Pages
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Voltage Regulators
AN8016NSH
s Application Circuit Examples (continued)
[2] Notes on direct n-channel MOSFET drive (continued)
3. Notes on printed circuit board pattern layout
Observe the following recommendations on printed circuit board pattern layout to achieve low noise and high
efficiency.
1) Use extremely wide lines for the ground lines, and isolate the IC ground from the power system ground.
2) Make the lines in the high-current system as wide as possible.
3) Position the input filter capacitor C3 as close as possible to the VCC and ground pins, and assure that there
are no other paths for switching noise to enter the IC.
4) Keep the length of the line between the Out pin and the switching device (either a MOSFET or other
transistor) as short as possible to provide a clean switching waveform to the switching device.
5) Use a relatively long line for the low-impedance side of the output voltage detection resistor R2.
(2)
VIN
SBD
VOUT
Q1
(4)
GND
(1)
AN8016NSH
24
C3
(3)
kΩ
(5)
R2
[3] Evaluation board
Off
VIN
L1
C3
SBD
Q1
BC E
+
VOUT
+
C6
GND
R6
R4
C4
C2 C1
R3
R1
C5
R5
AN8016NSH
R2 DC-DC CONVERTER BOARD
17
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