参数资料
型号: TPS61097-ADJDRSR
厂商: TEXAS INSTRUMENTS INC
元件分类: 稳压器
英文描述: 0.475 A BATTERY CHARGE CONTROLLER, PDSO6
封装: 3 X 3 MM, SON-6
文件页数: 14/27页
文件大小: 679K
代理商: TPS61097-ADJDRSR
TPS61097
www.ti.com
SLVS872B – JUNE 2009 – REVISED DECEMBER 2009
Layout Considerations
As for all switching power supplies, the layout is an important step in the design, especially at high peak currents
and high switching frequencies. If the layout is not carefully done, the regulator could show stability problems as
well as EMI problems. Therefore, use wide and short traces for the main current path and for the power ground
tracks. The input and output capacitor, as well as the inductor should be placed as close as possible to the IC.
Use a common ground node for power ground and a different one for control ground to minimize the effects of
ground noise. Connect these ground nodes at any place close to one of the ground pins of the IC.
The feedback divider should be placed as close as possible to the control ground pin of the IC. To lay out the
control ground, it is recommended to use short traces as well, separated from the power ground traces. This
avoids ground shift problems, which can occur due to superimposition of power ground current and control
ground current.
Figure 20. Layout Schematic
Copyright 2009, Texas Instruments Incorporated
21
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