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SWCS049J bảng dữ liệu(PDF) 129 Page - Texas Instruments

tên linh kiện SWCS049J
Giải thích chi tiết về linh kiện  TPS65911 Integrated Power Management Unit Top Specification
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SWCS049J bảng dữ liệu(HTML) 129 Page - Texas Instruments

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TPS65911
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SWCS049S – JUNE 2010 – REVISED AUGUST 2018
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Product Folder Links: TPS65911
Applications, Implementation, and Layout
Copyright © 2010–2018, Texas Instruments Incorporated
7.2.4
Layout Guidelines
7.2.4.1
PCB Layout
As with all switching power supplies, the layout is an important step in the design. Proper layout is
important for stability, EMI, as well as achieve higher efficiency and load transient response.
•
Place the input capacitors as close as possible to the input pins on the IC, and on the same side of the
board as the IC.
•
Place the inductor and output capacitor close to the switch node of the IC.
•
Use a solid ground plane for the GND of the buck converters and controller, and use plenty of vias.
•
Keep the loop area formed by switch node, inductor, output capacitor, and ground as small as
possible.
•
Route the analog grounds separately from the power grounds, and connect them at the ground plane.
•
Use short, wide traces for any trace which carries high current like regulator input, output, and ground
traces.
For more detailed guidelines, refer to the TPS65911 Layout Guidelines.
7.2.5
Layout Example
Figure 7-8. VDD1 Layout



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