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TPS40020 - Synchronous Buck Controller

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General Description

D Operating Input Voltage 2.25 V to 5.5 V D Output Voltage as Low as 0.7 V D 1% Internal 0.7 V Reference D Predictive Gate Drive N-Channel MOSFET Drivers for Higher Efficiency D Externally Adjustable Soft-Start and Short Circuit Current Limit D Programmable Fixed-Frequency 100 KHz-to-1 MHz Voltage-Mode Control D Source-Only Current or Source/Sink Current D Quick Response Output Transient Comparators with Power Good Indication Provide Output Status D 16-Pin PowerPAD Package APPLICATIONS D Networking Equipment D Telecom Equipment D Base Stations D Servers D DSP Power The TPS4002x family of dc-to-dc controllers are designed for non-isolated synchronous buck regulators, providing enhanced operation and design flexability through user programmability.

The TPS4002x utilizes a proprietary Predictive Gate Drive technology to minimize the diode conduction losses associated with the high-side and synchronous rectifier N-channel MOSFET transistions.

The integrated charge pump with boost circuit provides a regulated 5-V gate drive for both the high side and synchronous rectifier N-channel MOSFETs.

Overview

Not Recommended for New Designs www.ti.com TPS40020 8 TPS40021 SLUS535D − MARCH 2003 − REVISED JULY 2007 ENHANCED, LOWĆINPUT VOLTAGEĆMODE SYNCHRONOUS BUCK.

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