參數(shù)資料
型號(hào): TPS54350EVM-235
廠(chǎng)商: Texas Instruments, Inc.
英文描述: 3-Amp SWIFT Regulator Evaulation Module(3A SWIFT穩(wěn)壓器TPS54350的評(píng)估模塊)
中文描述: 3安培的SWIFT穩(wěn)壓Evaulation模塊條第(3A SWIFT的穩(wěn)壓器TPS54350的評(píng)估模塊)
文件頁(yè)數(shù): 25/31頁(yè)
文件大?。?/td> 551K
代理商: TPS54350EVM-235
Layout
3-2
3.1
Layout
The board layout for the TPS54350EVM235 is shown in Figure 31 through
Figure 34. The topside layer of the TPS54350EVM235 is laid out in a
manner typical of a user application that is optimized for small size. The top
and bottom layers are 1.5 oz. copper.
The top layer contains the main power traces for V
I
, V
O
, and Vphase. Also, on
the top layer are connections for the remaining pins of the TPS54350 and a
large area filled with ground. The bottom layer consists of a ground plane along
with a Vphase area and the Vsense trace. The bottom layer also has pads for
placing snubber components (R10 and C11) and an optional catch diode (D1).
The top and bottom ground traces are connected with multiple vias placed
around the board including 8 directly under the TPS54350 device to provide
a thermal path from the PowerPAD
land to ground.
The input decoupling capacitor (C9), bias decoupling capacitor (C4), and
bootstrap capacitor (C3) are all located as close to the IC as possible. In
addition, the compensation components are also kept close to the IC. The
compensation circuit ties to the output voltage at the point of regulation, at the
positive output connection.
Figure 31.Top-Side Layout
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