參數(shù)資料
型號(hào): TPS5103DB
廠商: Texas Instruments, Inc.
英文描述: MULTIPLE MODE SYNCHRONOUS DC/DC CONTROLLER
中文描述: 多模同步DC / DC控制器
文件頁(yè)數(shù): 19/37頁(yè)
文件大?。?/td> 1052K
代理商: TPS5103DB
TPS5103
MULTIPLE MODE SYNCHRONOUS DC/DC CONTROLLER
SLVS240 – SEPTEMBER 1999
19
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
APPLICATION INFORMATION
overshoot of output rectangle wave
The drivers in the TPS5103 controller are fast and can produce high transients on V
CC
or the junction of Q1 and
Q2(shown below). Care must be taken to insure that these transients do not exceed the absolute maximum
rating for the device or associated external component. A low-ESR capacitor connected directly from Q1 drain
to Q2 source can greatly reduce transient pulses on V
CC
. Also, Q1 turn
-
on-speed can be reduced by adding
a resistor (5
15
) in series with OUT_u. Poor layout of the switching node (V1 in figure) can result in the
requirement for additional snubber circuitry require from V1 to ground.
C1
Q1
Q2
V1
OUT_u
VCC
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