TPS56221

AKTIV

Synchron-SWIFT™-Abwärtswandler von 4,5 V bis 14 V, 25 A

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Datenblatt

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

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Alternativen vergleichen

Selbe Funktionalität wie der verglichene Baustein bei abweichender Anschlussbelegung.

TPS543B25

AKTIV

Synchroner SWIFT™-Abwärtswandler, 4 bis 18 V Eingangsspannung, 25 A, erweiterter Strommodus Fixed frequency converter with smaller solution size and internal compensation

TPS56221

AKTIV

Datenblatt

Jetzt bestellen

Produktdetails

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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Technische Dokumentation

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Top-Dokumentation	Typ	Titel	Format-Optionen	Datum
*	Datenblatt	4.5-V to 14-V Input High-Current Synchronous Buck SWIFT Converter, TPS56221 datasheet (Rev. D)	PDF \| HTML	09.02.2016
	Anwendungshinweis	Semiconductor and IC Package Thermal Metrics (Rev. D)	PDF \| HTML	25.03.2024
	Anwendungshinweis	Calculating Efficiency (Rev. A)		06.03.2020
	Auswahlhilfe	SWIFT DC/DC Converters Selector Guide (Rev. G)		06.02.2019
	Auswahlhilfe	Power Management Guide 2018 (Rev. R)		25.06.2018
	Anwendungshinweis	Analysis and Design of Input Filter for DC-DC Circuit		27.11.2017
	Anwendungshinweis	Demystifying Type II and Type III Compensators Using Op-Amp and OTA for DC/DC Co		11.07.2014
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	Anwendungshinweis	Understanding Thermal Dissipation and Design of a Heatsink		04.05.2011

Design und Entwicklung

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Evaluierungsplatine

TPS56221EVM-579 — Evaluierungsmodul für TPS56221 Hochstrom (25 A)-Synchron-Abwärts-SWIFT™-Wandler

The Texas Instruments TPS56221EVM-579 evaluation module (EVM) helps designers evaluate the operation and performance of the TPS56221 4.5V to 14V Input, 25A High Current Synchronous Step-Down Converter. The EVM is designed to use a regulated 12V (8V to 14V) bus voltage to provide a regulated 1.0-V (...)

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