参数资料
型号: TPS40192DRCRG4
厂商: TEXAS INSTRUMENTS INC
元件分类: 稳压器
英文描述: SWITCHING CONTROLLER, 700 kHz SWITCHING FREQ-MAX, PDSO10
封装: 3 X 3 MM, GREEN, PLASTIC, SON-10
文件页数: 10/38页
文件大小: 707K
代理商: TPS40192DRCRG4
SLUS719C – MARCH 2007 – REVISED AUGUST 2010
www.ti.com
Layout Recommendations and Sample Layout
Layout Recommendations:
PowerPad is the only GND connection to the device (U1). PowerPad must be connected to ground.
PowerPad should be directly connected to SYNC FET (Q3) source with short, wide trace.
Locate 3-5 vias in PowerPad land to remove heat from the device.
Connect input capacitors (C7 & C9) and output capacitors (C8 & C10) grounds directly to SYNC FET (Q3)
source with wide copper trace or solid power ground island.
Locate input capacitors (C7 & C9), MOSFETs (Q2 & Q3), inductor (L1) and output capacitor (C8 & C10) over
power ground island.
Use short, wide traces for LDRV and HDRV MOSFET connections.
Route SW trace near HDRV trace.
Route GND trace near LDRV trace.
Use separate analog ground island under feedback components (C1, C2, C3, R5, R6, R7, R8 & R10).
Connect ground islands at PowerPad with 10-mil wide trace opposite SYNC FET (Q2) source connection.
Sample Layout:
Figure 15. TPS40192/3 Sample Layout - Component Placement and Top Side Copper
Figure 16. TPS40192/3 Sample Layout - Bottom Side Copper (X-Ray view from Top)
18
Copyright 2007–2010, Texas Instruments Incorporated
Product Folder Link(s): TPS40192 TPS40193
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