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TPS40021

Texas Instruments
Part Number TPS40021
Manufacturer Texas Instruments
Description Synchronous Buck Controller
Published Nov 7, 2021
Detailed Description Not Recommended for New Designs www.ti.com TPS40020 8 TPS40021 SLUS535D − MARCH 2003 − REVISED JULY 2007 ENHANCED,...
Datasheet PDF File TPS40021 PDF File

TPS40021
TPS40021

Overview
Not Recommended for New Designs www.
ti.
com TPS40020 8 TPS40021 SLUS535D − MARCH 2003 − REVISED JULY 2007 ENHANCED, LOWĆINPUT VOLTAGEĆMODE SYNCHRONOUS BUCK CONTROLLER FEATURES 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.
The use of the Predictive Gate Drive technology and charge pump/boost circuits combine to provide a highly efficient, smaller and less expensive converter.
Design flexibility is provided through user programmability of such functions as: operating frequency, short circuit current detection thresholds, soft-start ramp time, and external synchronization frequency.
The operating frequency is programmable using a single resistor over a frequency range of 100 kHz to 1 MHz.
Higher operating frequencies yield smaller component values for a given converter power level as well as faster loop closure.
VDD 2.
25 V − 5.
5 V TPS40020 1 ILIM/ SYNC BOOT1 16 VDD VOUT VOUT 2 VDD HDRV 15 3 OSNS S...


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