TPS51220EVM

TPS51220EVM High Performance Synchronous Buck Using the TPS51220 Evaluation Module

TPS51220EVM

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Overview

The TPS51220 is a dual peak-current mode, synchronous step-down controller with three low-dropout (LDO) regulators. It is optimized for 5 V/3.3 V notebook system power supplies. A 99% duty cycle operation enables designers to complete Li-ion battery applications from 2-cells to 4-cells cost effectively. The TPS51220 supports high-efficiency, fast transient response and 99% duty cycle operation. DCR current sensing provides lossless current sensing and free MOSFET selection; resistor sensing supports accurate current-sensing operation. It supports supply input voltages ranging from 4.5 V to 30 V and output voltages from 1 V to 12 V. High-current, 5 V at 100 am, 3.3 V at 10 am, onboard linear regulators have glitch-free switchover function to SMPS, and the 2 V reference has a 100 mA capability.

Buck controllers (external switch)
TPS51220 3-V to 28-V, synchronous peak current mode buck controller for notebook power

 

N-channel MOSFETs
CSD17307Q5A 30-V, N channel NexFET™ power MOSFET, single SON 5 mm x 6 mm, 12.1 mOhm CSD17310Q5A 30-V, N channel NexFET™ power MOSFET, single SON 5 mm x 6 mm, 5.9 mOhm
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Evaluation board

TPS51220EVM — TPS51220EVM High Performance Synchronous Buck Using the TPS51220 Evaluation Module

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Technical documentation

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Type Title Date
User guide TPS51220 Buck Controller Evaluation Module User's Guide (Rev. B) PDF | HTML 18 Feb 2022
Certificate TPS51220EVM EU Declaration of Conformity (DoC) 02 Jan 2019
Data sheet Fixed Frequency 99% Duty Cycle Peak Current Mode Notebook System Pwr Controlle datasheet (Rev. C) 03 Jul 2009

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