参数资料
型号: ADP2301-EVALZ
厂商: Analog Devices Inc
文件页数: 23/28页
文件大小: 0K
描述: BOARD EVALUATION FOR ADP2301
标准包装: 1
主要目的: DC/DC,步降
输出及类型: 1,非隔离
输出电压: 3.3V
电流 - 输出: 1.2A
输入电压: 3 ~ 20 V
稳压器拓扑结构: 降压
频率 - 开关: 1.4MHz
板类型: 完全填充
已供物品:
已用 IC / 零件: ADP2301

Data Sheet
CIRCUIT BOARD LAYOUT RECOMMENDATIONS
ADP2300/ADP2301
Good circuit board layout is essential to obtain the best
performance from the ADP2300/ADP2301. 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 50.
?
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.
Refer to the following guidelines for a good PCB layout:
VIN
BST
?
Place the input capacitor, inductor, catch diode, output
capacitor, and bootstrap capacitor close to the IC using
ADP2300/
ADP2301 SW
?
short traces.
Ensure that the high current loop traces are as short and wide
EN
GND
FB
as possible. The high current path is shown in Figure 49.
?
?
Maximize the size of ground metal on the component side
to improve thermal dissipation.
Use a ground plane with several vias connecting to the
Figure 49. Typical Application Circuit with High Current Traces Shown in Blue
component side ground to further reduce noise inter-
ference on sensitive circuit nodes.
INDUC TOR
C3
L1
BST CA P
CA TCH DIODE
D1
C1
C2
ADP2300/ADP2301
INPUT CA P
Figure 50. Recommended PCB Layout for the ADP2300/ADP2301
Rev. C | Page 23 of 28
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