參數(shù)資料
型號: TPS28225DT
廠商: Texas Instruments, Inc.
英文描述: High-Frequency 4-A Sink Synchronous MOSFET Driver
中文描述: 高頻率的4 - A水槽同步MOSFET驅(qū)動器
文件頁數(shù): 21/30頁
文件大?。?/td> 951K
代理商: TPS28225DT
www.ti.com
TPS28225
SLUS710–MAY 2006
APPLICATION INFORMATION (continued)
The schematic of one of the phases in a multi-phase synchronous buck regulator and the related layout are
shown in
Figure 27
and
Figure 28
. These help to illustrate good design practices. The power stage includes one
high-side MOSFET Q10 and two low-side MOSFETS (Q8 and Q9). The driver (U7) is located on bottom side of
PCB close to the power MOSFETs. The related switching waveforms during turning ON and OFF of upper FET
are shown in
Figure 29
and
Figure 30
. The dead time during turning ON is only 10ns (
Figure 29
) and 22ns
during turning OFF (
Figure 30
).
Figure 28. Component Placement Based on Schematic in
Figure 27
Figure 29. Phase Rising Edge Switching Waveforms (20ns/div) of the Power Stage in
Figure 27
21
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