TPS51117
SLVS631B –DECEMBER 2005–REVISED SEPTEMBER 2009...................................................................................................................................... www.ti.com
FUNCTIONAL BLOCK DIAGRAM
2.9
3.9 /3.6
48
DETAILED DESCRIPTION
PWM OPERATION
The main control loop of the TPS51117 is designed as an adaptive on-time pulse width modulation (PWM)
controller. It supports proprietary D-CAP™ Mode that uses an internal compensation circuit and is suitable for
minimal external component count configuration when an appropriate amount of ESR at the output capacitor(s) is
allowed. Basic operation of D-CAP Mode can be described as follows.
6
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