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AC/DC 和 DC/DC 轉換器 (整合式 FET)

TPS54719

現行

2.95V 至 6V 輸入、7A 同步降壓 DC/DC 轉換器

立即訂購
產品規格表

現在提供此產品的更新版本

open-in-new 比較替代產品
功能相同，但引腳輸出與所比較的裝置不同
TPS62816-Q1 現行 採用 2-mm x 3-mm 可潤濕側翼 QFN 封裝的車用 2.75-V 至 6-V、6-A 降壓轉換器 6-A step-down converter in 2-mm x 3-mm wettable-flanks QFN package

TPS54719

現行
產品規格表 立即訂購

產品詳細資料

Rating Catalog Operating temperature range (°C) -40 to 140 Topology Buck Type Converter Iout (max) (A) 7 Vin (min) (V) 2.95 Vin (max) (V) 6 Switching frequency (min) (kHz) 200 Switching frequency (max) (kHz) 2000 Features Enable, Forced PWM, Frequency synchronization, Power good, Soft Start Adjustable, Synchronous Rectification, Tracking Control mode current mode Vout (min) (V) 0.6 Vout (max) (V) 4.5 Iq (typ) (µA) 455 Duty cycle (max) (%) 100
Rating Catalog Operating temperature range (°C) -40 to 140 Topology Buck Type Converter Iout (max) (A) 7 Vin (min) (V) 2.95 Vin (max) (V) 6 Switching frequency (min) (kHz) 200 Switching frequency (max) (kHz) 2000 Features Enable, Forced PWM, Frequency synchronization, Power good, Soft Start Adjustable, Synchronous Rectification, Tracking Control mode current mode Vout (min) (V) 0.6 Vout (max) (V) 4.5 Iq (typ) (µA) 455 Duty cycle (max) (%) 100
WQFN (RTE) 16 9 mm² 3 x 3
  • Two 30-mΩ (typical) MOSFETs for high efficiency at 7-A loads
  • 200-kHz to 2-MHz switching frequency
  • 0.6 V ± 1.5% voltage reference over temperature
  • Adjustable slow start/sequencing
  • UV and OV power-good output
  • Low operating and shutdown quiescent current
  • Safe start-up into pre-biased output
  • Cycle-by-cycle current limit, thermal and frequency foldback protection
  • –40°C to 140°C operating junction temperature range
  • Thermally enhanced 3-mm × 3-mm 16-pin QFN
  • Two 30-mΩ (typical) MOSFETs for high efficiency at 7-A loads
  • 200-kHz to 2-MHz switching frequency
  • 0.6 V ± 1.5% voltage reference over temperature
  • Adjustable slow start/sequencing
  • UV and OV power-good output
  • Low operating and shutdown quiescent current
  • Safe start-up into pre-biased output
  • Cycle-by-cycle current limit, thermal and frequency foldback protection
  • –40°C to 140°C operating junction temperature range
  • Thermally enhanced 3-mm × 3-mm 16-pin QFN

The TPS54719 device is a full featured 6-V, 7-A, synchronous step down current mode converter with two integrated MOSFETs.

The TPS54719 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 QFN package.

The TPS54719 provides accurate regulation for a variety of loads with an accurate ±1.5% Voltage Reference (VREF) over temperature.

Efficiency is maximized through the integrated 30-mΩ MOSFETs and 455-µA typical supply current. Using the enable pin, shutdown supply current is reduced to 1 µA by entering a shutdown mode.

Undervoltage lockout is internally set at 2.4 V, but can be increased by programming the threshold with a resistor network on the enable pin. The output voltage start-up ramp is controlled by the slow-start pin. An open-drain power-good signal indicates the output is within 93% to 108% of its nominal voltage.

Frequency foldback and thermal shutdown protects the device during an overcurrent condition.

The TPS54719 is supported in the WEBENCH™ Software Tool at www.ti.com/webench.

The TPS54719 device is a full featured 6-V, 7-A, synchronous step down current mode converter with two integrated MOSFETs.

The TPS54719 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 QFN package.

The TPS54719 provides accurate regulation for a variety of loads with an accurate ±1.5% Voltage Reference (VREF) over temperature.

Efficiency is maximized through the integrated 30-mΩ MOSFETs and 455-µA typical supply current. Using the enable pin, shutdown supply current is reduced to 1 µA by entering a shutdown mode.

Undervoltage lockout is internally set at 2.4 V, but can be increased by programming the threshold with a resistor network on the enable pin. The output voltage start-up ramp is controlled by the slow-start pin. An open-drain power-good signal indicates the output is within 93% to 108% of its nominal voltage.

Frequency foldback and thermal shutdown protects the device during an overcurrent condition.

The TPS54719 is supported in the WEBENCH™ Software Tool at www.ti.com/webench.
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類型 標題 日期
* Data sheet TPS54719 2.95-V To 6-V Input, 7-A Synchronous Step Down Converter datasheet (Rev. C) PDF | HTML 2021年 9月 2日
Selection guide Buck Converter Quick Reference Guide (Rev. B) 2021年 4月 8日
User guide TPS54719EVM-152, 7-A, Regulator Evaluation Module 2012年 5月 9日

設計與開發

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開發板

TPS54719EVM-152 — TPS54719 評估模組

The Texas Instruments TPS54719EVM-152 evaluation module (EVM) is a fully assembled and tested circuit for evaluating the TPS54719 Synchronous Step-down Converter. The EVM operates from a 3V to 6V input and provides a 1.8V output at 7A maximum. The EVM features current mode control and a 500 kHz (...)
使用指南: PDF
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模擬型號

TPS54719 PSpice Average Model

SLVM605.ZIP (31 KB) - PSpice Model
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模擬型號

TPS54719 PSpice Transient Model

SLVMA89.ZIP (406 KB) - PSpice Model
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WQFN (RTE) 16 Ultra Librarian
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