Datasheet

BURST
I
PFM(LEAVE)
LOADCURRENT
V(OUT)
I
PFM(LEAVE)
I
PFM(ENTER)
INDUCTORCURRENT
TPS65820
SLVS663B – MAY 2006 – REVISED APRIL 2008 .............................................................................................................................................................. www.ti.com
Figure 46. Typical Burst Operation in PFM Mode
The PFM operation is disabled and PWM operation set if one of the following events happen during PFM
operation:
1. The total burst operation time exceeds 10 µ s, typ.
2. The output voltage falls below 2% of the target regulation voltage.
The PFM mode can be disabled through the serial interface to force the individual converters to stay in fixed
frequency PWM mode.
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