参数资料
型号: ADP2302-EVALZ
厂商: Analog Devices Inc
文件页数: 22/28页
文件大小: 0K
描述: EVAL BOARD FOR ADP2302
标准包装: 1
主要目的: DC/DC,步降
输出及类型: 1,非隔离
电流 - 输出: 2A
输入电压: 3 ~ 20 V
稳压器拓扑结构: 降压
频率 - 开关: 700kHz
板类型: 完全填充
已供物品:
已用 IC / 零件: ADP2302

ADP2302/ADP2303
CIRCUIT BOARD LAYOUT RECOMMENDATIONS
Data Sheet
Good circuit board layout is essential to obtaining the best
performance for ADP2302/ADP2303. Poor layout can affect the
regulation and stability, as well as the electromagnetic interface
(EMI) and electromagnetic compatibility (EMC) performance.
A PCB layout example is shown in Figure 53. Refer to the
?
Minimize the length of the FB trace connecting the top of
the feedback resistive voltage divider to the output. In
addition, keep these traces away from the high current
traces and the switch node to avoid noise pickup.
following guidelines for a good PCB layout:
VIN
BST
?
Place the input capacitor, the inductor, catch diode, output
ADP2302/
ADP2303
capacitor, and bootstrap capacitor close to the IC using
short traces.
PGOOD
SW
?
?
Ensure that the high current loop traces are as short and
wide as possible. The high current path is shown Figure 52.
Maximize the size of ground metal on the component side
EN
GND
FB
?
to improve thermal dissipation.
Use a ground plane with several vias connecting to the
Figure 52. Typical Application Circuit with High Current Lines Shown in Blue
component side ground to further reduce noise on
sensitive circuit nodes.
V OUT
INDUCTOR
OUTPUT
CAPACITORS
DIODE
GND
BST CAP
INPUT BST 1
CAPACITOR
VIN 2
EXPOSED
PAD
8 SW
7 GND
V IN
EN 3
PGOOD 4
6 NC
5 FB
Figure 53. Recommended Layout for ADP2302/ADP2303
Rev. A | Page 22 of 28
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