TPS54678

Name: TPS54678
Brand: TI
SKU: TPS54678
Price: 1.36 USD

활성

히컵 전류 제한을 지원하는 2.95V~6V 입력, 6A 동기형 스텝 다운 SWIFT™ 컨버터

지금 주문

데이터 시트

document-pdfAcrobat TPS54678 2.95-V to 6-V Input, 6-A Synchronous Step-Down SWIFT™ Converter With Hiccup Current Limit datasheet (Rev. B) (영어) PDF | HTML

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대안 비교

비교 대상 장치와 유사한 기능

TPS62867

활성

1.5mm × 2.5mm QFN 패키지의 2.4V~5.5V 입력, 6A 동기 스텝다운 컨버터 Newer generation of 6-A devices with <30mm² total BOM size.

TPS62869

활성

1.5mm x 2.5mm QFN 패키지의 I²C 인터페이스를 지원하는 5.5V, 6A 동기 스텝다운 컨버터 Newer generation of 6-A devices

TPS54678

활성

데이터 시트

지금 주문

제품 상세 정보

Rating

Catalog

Operating temperature range (°C)

-40 to 150

Topology

Buck

Type

Converter

Iout (max) (A)

6

Vin (min) (V)

2.95

Vin (max) (V)

6

Switching frequency (min) (kHz)

200

Switching frequency (max) (kHz)

2000

Features

Enable, Frequency synchronization, Power good, Pre-Bias Start-Up, Soft Start Adjustable, Synchronous Rectification, Tracking, UVLO adjustable

Control mode

current mode

Vout (min) (V)

0.6

Vout (max) (V)

4.5

Iq (typ) (µA)

570

Duty cycle (max) (%)

98

Rating

Catalog

Operating temperature range (°C)

-40 to 150

Topology

Buck

Type

Converter

Iout (max) (A)

6

Vin (min) (V)

2.95

Vin (max) (V)

6

Switching frequency (min) (kHz)

200

Switching frequency (max) (kHz)

2000

Features

Enable, Frequency synchronization, Power good, Pre-Bias Start-Up, Soft Start Adjustable, Synchronous Rectification, Tracking, UVLO adjustable

Control mode

current mode

Vout (min) (V)

0.6

Vout (max) (V)

4.5

Iq (typ) (µA)

570

Duty cycle (max) (%)

98

WQFN (RTE)

16

9 mm² 3 x 3

Two 12-mΩ (typical) MOSFETs for high-efficiency 6-A continuous output current
200-kHz to 2-MHz Switching frequency
0.6-V ±1% Voltage reference over temperature (–40°C to 150°C)
Synchronizes to external clock
Start-Up with prebiased voltage
Power good output
Adjustable slow start and sequencing
Cycle-by-cycle current limit and hiccup current protection
Adjustable input voltage UVLO
Thermally enhanced 16-pin 3-mm × 3-mm WQFN (RTE)
Create a custom design using the TPS54678 with the WEBENCH^® Power Designer

Two 12-mΩ (typical) MOSFETs for high-efficiency 6-A continuous output current
200-kHz to 2-MHz Switching frequency
0.6-V ±1% Voltage reference over temperature (–40°C to 150°C)
Synchronizes to external clock
Start-Up with prebiased voltage
Power good output
Adjustable slow start and sequencing
Cycle-by-cycle current limit and hiccup current protection
Adjustable input voltage UVLO
Thermally enhanced 16-pin 3-mm × 3-mm WQFN (RTE)
Create a custom design using the TPS54678 with the WEBENCH^® Power Designer

TPS54678 device is a full-featured 6-V, 6-A, synchronous step-down current mode converter with two integrated MOSFETs.

TPS54678 enables small designs by integrating the MOSFETs, implementing current mode control to reduce external component count, reducing inductor size by enabling up to 2-MHz switching frequency, and minimizing the IC footprint with a small 3-mm × 3-mm thermally enhanced WQFN package.

TPS54678 provides accurate regulation for a variety of loads with an accurate ±1% voltage reference (V_REF) over temperature.

Efficiency is maximized through the integrated 12-mΩ MOSFETs. Using the enable (EN) pin, shutdown supply current is reduced by disabling the device.

The output voltage start-up ramp is controlled by the soft-start (SS) pin that can also be configured for sequencing or tracking. Monotonic start-up is achieved with prebiased voltage. Undervoltage lockout can be increased by programming the threshold with a resistor divider on the enable pin. An open-drain power good signal indicates the output is within 93% to 105% of its nominal voltage.

Cycle-by-cycle current limit, hiccup overcurrent protection and thermal shutdown protect the device during an overcurrent condition.

TPS54678 device is a full-featured 6-V, 6-A, synchronous step-down current mode converter with two integrated MOSFETs.

TPS54678 enables small designs by integrating the MOSFETs, implementing current mode control to reduce external component count, reducing inductor size by enabling up to 2-MHz switching frequency, and minimizing the IC footprint with a small 3-mm × 3-mm thermally enhanced WQFN package.

TPS54678 provides accurate regulation for a variety of loads with an accurate ±1% voltage reference (V_REF) over temperature.

Efficiency is maximized through the integrated 12-mΩ MOSFETs. Using the enable (EN) pin, shutdown supply current is reduced by disabling the device.

The output voltage start-up ramp is controlled by the soft-start (SS) pin that can also be configured for sequencing or tracking. Monotonic start-up is achieved with prebiased voltage. Undervoltage lockout can be increased by programming the threshold with a resistor divider on the enable pin. An open-drain power good signal indicates the output is within 93% to 105% of its nominal voltage.

Cycle-by-cycle current limit, hiccup overcurrent protection and thermal shutdown protect the device during an overcurrent condition.

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기술 자료

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10개 모두 보기

	유형	직함		날짜
*	Data sheet	TPS54678 2.95-V to 6-V Input, 6-A Synchronous Step-Down SWIFT™ Converter With Hiccup Current Limit datasheet (Rev. B)	PDF \| HTML	2019/05/06
	Application note	Semiconductor and IC Package Thermal Metrics (Rev. D)	PDF \| HTML	2024/03/25
	Selection guide	Buck Converter Quick Reference Guide (Rev. B)		2021/04/08
	Application note	Calculating Efficiency (Rev. A)		2020/03/06
	Application note	Minimizing Output Ripple During Startup (Rev. A)		2019/05/20
	Selection guide	SWIFT DC/DC Converters Selector Guide (Rev. G)		2019/02/06
	Selection guide	Power Management Guide 2018 (Rev. R)		2018/06/25
	Application note	Minimizing Output Ripple During Startup		2017/06/22
	User guide	TPS54678EVM-155 6-A, SWIFT™ Regulator Evaluation Module		2012/06/13
	Application note	Understanding Thermal Dissipation and Design of a Heatsink		2011/05/04

설계 및 개발

추가 조건 또는 필수 리소스는 사용 가능한 경우 아래 제목을 클릭하여 세부 정보 페이지를 확인하세요.

평가 보드

TPS54678EVM-155 — TPS54678 평가 모듈

The Texas Instruments TPS54678EVM-155 evaluation module (EVM) is a fully assembled and tested circuit for evaluating the TPS54678 2.95V to 6V Output, 2MHz Synchronous Step-Down Switcher.

사용 설명서: PDF