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SWCS049F 데이터시트(PDF) 129 Page - Texas Instruments

부품명 SWCS049F
상세설명  TPS65911 Integrated Power Management Unit Top Specification
PDF  144 Pages
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제조업체  TI [Texas Instruments]
홈페이지  http://www.ti.com
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SWCS049F 데이터시트(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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