TPS53353_15 datasheet(19/37 Pages) TI

部件名	TPS53353

功能描述	TPS53353 High-Efficiency 20-A Synchronous Buck Converter With Eco-mode?

PDF	37 Pages

Scroll/Zoom	100%

制造商	TI [Texas Instruments]

网页	http://www.ti.com

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TPS53353

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SLUSAK2B – AUGUST 2011 – REVISED FEBRUARY 2015

Switching frequency versus output current in the light load condition is a function of L, VIN, and VOUT, but it

decreases almost proportionally to the output current from the IOUT(LL) given in Equation 7. For example, it is 60

kHz at IOUT(LL)/5 if the frequency setting is 300 kHz.

7.4.4 Forced Continuous Conduction Mode

When the MODE pin is tied to PGOOD through a resistor, the controller keeps continuous conduction mode

(CCM) in light load condition. In this mode, switching frequency is kept almost constant over the entire load

range which is suitable for applications need tight control of the switching frequency at a cost of lower efficiency.

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TPS53353 数据表(PDF) 19 Page - Texas Instruments