TPS56221

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4.5V 至 14V、25A 同步 SWIFT™ 降压转换器

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数据表

document-pdfAcrobat 4.5-V to 14-V Input High-Current Synchronous Buck SWIFT Converter, TPS56221 数据表 (Rev. D) (英语) PDF | HTML

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TPS543B25

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具有 4V 至 18V 输入和高级电流模式的 25A 同步 SWIFT™ 降压转换器 Fixed frequency converter with smaller solution size and internal compensation

功能与比较器件相似。

TPS543B22

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具有 4V 至 18V 输入和高级电流模式的 20A 同步 SWIFT™ 降压转换器 Fixed frequency converter with smaller solution size and internal compensation

TPS56221

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数据表

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产品详情

Rating

Catalog

Topology

Buck

Iout (max) (A)

25

Vin (max) (V)

14

Vin (min) (V)

4.5

Vout (max) (V)

12

Vout (min) (V)

0.6

Features

Adjustable current limit, Enable, Forced PWM, Overcurrent protection, Power good, Prebias startup, Soft-start adjustable, Synchronous rectification, UVLO Fixed

Control mode

Voltage mode

Operating temperature range (°C)

-40 to 125

Iq (typ) (A)

0.0025

Duty cycle (max) (%)

93

Rating

Catalog

Topology

Buck

Iout (max) (A)

25

Vin (max) (V)

14

Vin (min) (V)

4.5

Vout (max) (V)

12

Vout (min) (V)

0.6

Features

Adjustable current limit, Enable, Forced PWM, Overcurrent protection, Power good, Prebias startup, Soft-start adjustable, Synchronous rectification, UVLO Fixed

Control mode

Voltage mode

Operating temperature range (°C)

-40 to 125

Iq (typ) (A)

0.0025

Duty cycle (max) (%)

93

LSON-CLIP (DQP)

22

30 mm² (6 mm × 5 mm)

4.5-V to 14-V Input Voltage Range
Incorporates Power Block Technology
Up to 25-A Output Current
Fixed-Frequency Options of 300 kHz, 500 kHz,
and 1 MHz
High-Side and Low-Side MOSFET R_DS(on) Sensing
Programmable Soft-Start
600-mV Reference Voltage With 1% Accuracy
Voltage Mode Control with Feed-Forward
Supports Prebiased Output
Thermal Shutdown
22-Pin 5-mm × 6-mm PQFN PowerPAD™ Package
For SWIFT Power Products Documentation,
see http://www.ti.com/swift

4.5-V to 14-V Input Voltage Range
Incorporates Power Block Technology
Up to 25-A Output Current
Fixed-Frequency Options of 300 kHz, 500 kHz,
and 1 MHz
High-Side and Low-Side MOSFET R_DS(on) Sensing
Programmable Soft-Start
600-mV Reference Voltage With 1% Accuracy
Voltage Mode Control with Feed-Forward
Supports Prebiased Output
Thermal Shutdown
22-Pin 5-mm × 6-mm PQFN PowerPAD™ Package
For SWIFT Power Products Documentation,
see http://www.ti.com/swift

The TPS56221 device is a high-efficiency and high-current synchronous buck converter designed to operate from a supply from 4.5 V to 14 V. The device can produce an output voltage as low as 0.6 V at loads up to 25 A. Integrated NexFET™ Power MOSFETs provide a small footprint and ease of use.

The device implements a voltage-mode control with voltage feed-forward compensation that responds instantly to input voltage change.

The TPS56221 is available in a thermally enhanced 22-pin PQFN (DQP) PowerPAD package.

The device offers design flexibility with a variety of user programmable functions, including soft-start, overcurrent protection (OCP) levels, and loop compensation. OCP levels are programmed by a single external resistor connected from the ILIM pin to the circuit ground. During the initial power-on sequence, the device enters a calibration cycle, measures the voltage at the ILIM pin, and sets an internal OCP voltage level. During operation, the programmed OCP voltage level is compared to the voltage drop across the low-side FET when it is on to determine whether there is an overcurrent condition. It then enters a shutdown/restart cycle until the fault is removed.

The TPS56221 device is a high-efficiency and high-current synchronous buck converter designed to operate from a supply from 4.5 V to 14 V. The device can produce an output voltage as low as 0.6 V at loads up to 25 A. Integrated NexFET™ Power MOSFETs provide a small footprint and ease of use.

The device implements a voltage-mode control with voltage feed-forward compensation that responds instantly to input voltage change.

The TPS56221 is available in a thermally enhanced 22-pin PQFN (DQP) PowerPAD package.

The device offers design flexibility with a variety of user programmable functions, including soft-start, overcurrent protection (OCP) levels, and loop compensation. OCP levels are programmed by a single external resistor connected from the ILIM pin to the circuit ground. During the initial power-on sequence, the device enters a calibration cycle, measures the voltage at the ILIM pin, and sets an internal OCP voltage level. During operation, the programmed OCP voltage level is compared to the voltage drop across the low-side FET when it is on to determine whether there is an overcurrent condition. It then enters a shutdown/restart cycle until the fault is removed.

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技术文档

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顶层文档	类型	标题	格式选项	下载最新的英语版本		日期
*	数据表	4.5-V to 14-V Input High-Current Synchronous Buck SWIFT Converter, TPS56221 数据表 (Rev. D)	PDF \| HTML			2016-2-9
	应用手册	半导体和 IC 封装热指标 (Rev. D)	PDF \| HTML	英语版 (Rev.D)	PDF \| HTML	2024-4-24
	应用手册	Calculating Efficiency (Rev. A)				2020-3-6
	选择指南	SWIFT DC/DC Converters Selector Guide (Rev. G)				2019-2-6
	选择指南	电源管理指南 2018				2018-7-31
	应用手册	Analysis and Design of Input Filter for DC-DC Circuit				2017-11-27
	应用手册	3D 封装对电源管理器件性能及功率密度的提升		英语版		2015-10-19
	应用手册	Demystifying Type II and Type III Compensators Using Op-Amp and OTA for DC/DC Co				2014-7-11
	应用手册	Understanding Thermal Dissipation and Design of a Heatsink				2011-5-4

设计与开发

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评估板

TPS56221EVM-579 — 用于 TPS56221 高电流 (25A) 同步降压 SWIFT™ 转换器的评估模块

TPS56221EVM-579 是一块完全组装且经过测试的电路板，用于评估 TPS56221 高电流同步降压 DC/DC 转换器。TPS56221EVM-579 可在 25A 的电流下将 8V 至 14V 的输入电压转换为 1.2V。评估模块使用与 2x 12 AWG 实心线或绞线兼容的标准终端块。

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