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DC/DC 切換穩壓器
DC/DC 轉換器

TPS62743

現行

具有 360nA Iq 的 2V-5.5V 輸入、超低功耗 300mA 至 400mA 降壓式降壓 DCDC 轉換器

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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，但針腳輸出與所比較的裝置不同。
TPS62843 現行 1.8V 至 5.5V 輸入，600mA 超低 IQ 降壓轉換器 Lower quiescent current alternative with more output voltage options
TPS62840 現行 60nA 靜態電流 (IQ)、1.8V 至 6.5VIN、高效 750mA 降壓轉換器 Lower Iq of 60 nA and more output voltage options

TPS62743

現行
產品規格表 立即訂購

產品詳細資料

Rating Catalog Topology Buck Iout (max) (A) 0.3 Vin (max) (V) 5.5 Vin (min) (V) 2 Vout (max) (V) 3.1, 3.3 Vout (min) (V) 1.2, 1.3 Features Adaptive/Dynamic Voltage Scaling, Enable, Light Load Efficiency, Light load efficiency, Output discharge, Synchronous Rectification Control mode Constant on-time (COT), DCS-Control Operating temperature range (°C) -40 to 85 Iq (typ) (A) 0.0000003 Duty cycle (max) (%) 100
Rating Catalog Topology Buck Iout (max) (A) 0.3 Vin (max) (V) 5.5 Vin (min) (V) 2 Vout (max) (V) 3.1, 3.3 Vout (min) (V) 1.2, 1.3 Features Adaptive/Dynamic Voltage Scaling, Enable, Light Load Efficiency, Light load efficiency, Output discharge, Synchronous Rectification Control mode Constant on-time (COT), DCS-Control Operating temperature range (°C) -40 to 85 Iq (typ) (A) 0.0000003 Duty cycle (max) (%) 100
DSBGA (YFP) 8 1.8 mm² (— mm × — mm)
  • Input voltage range VIN from 2.15 V to 5.5 V
  • Input voltage range down to 2.0 V once started
  • output current
    • TPS62743 300 mA
    • TPS627431 400 mA
  • 360-nA operational quiescent current
  • Up to 90% efficiency at 10-µA output current
  • Power save mode operation
  • Selectable output voltages
    • Eight voltage options between 1.2 V to 3.3 V
  • Output voltage discharge
  • Low output voltage ripple
  • Automatic transition to no ripple 100% mode
  • RF friendly DCS-Control™
  • Total solution size < 10 mm2
  • Small 1.6-mm × 0.9-mm, 8-ball WCSP package
  • Input voltage range VIN from 2.15 V to 5.5 V
  • Input voltage range down to 2.0 V once started
  • output current
    • TPS62743 300 mA
    • TPS627431 400 mA
  • 360-nA operational quiescent current
  • Up to 90% efficiency at 10-µA output current
  • Power save mode operation
  • Selectable output voltages
    • Eight voltage options between 1.2 V to 3.3 V
  • Output voltage discharge
  • Low output voltage ripple
  • Automatic transition to no ripple 100% mode
  • RF friendly DCS-Control™
  • Total solution size < 10 mm2
  • Small 1.6-mm × 0.9-mm, 8-ball WCSP package

The TPS62743 is a high efficiency step down converter with ultra low quiescent current of typical 360 nA. The device is optimized to operate with a 2.2-µH inductor and 10µF output capacitor. The device uses DCS-Control™ and operates with a typical switching frequency of 1.2 MHz. In Power Save Mode the device extends the light load efficiency down to a load current range of 10-µA and below. TPS62743 provides an output current of 300 mA. Once started the device operates down to an input voltage range of 2.0 V. This allows to operate the device directly from a single Li-MnO2 coin cell.

The TPS62743 provides 8 programmable output voltages between 1.2V and 3.3V selectable by three selection pins. The TPS62743 is optimized to provide a low output voltage ripple and low noise using a small output capacitor. Once the input voltage comes close to the output voltage the device enters the No Ripple 100% mode to prevent an increase of output ripple voltage. In this operation mode the device stops switching and turns the high side MOSFET switch on.

The TPS62743 is a high efficiency step down converter with ultra low quiescent current of typical 360 nA. The device is optimized to operate with a 2.2-µH inductor and 10µF output capacitor. The device uses DCS-Control™ and operates with a typical switching frequency of 1.2 MHz. In Power Save Mode the device extends the light load efficiency down to a load current range of 10-µA and below. TPS62743 provides an output current of 300 mA. Once started the device operates down to an input voltage range of 2.0 V. This allows to operate the device directly from a single Li-MnO2 coin cell.

The TPS62743 provides 8 programmable output voltages between 1.2V and 3.3V selectable by three selection pins. The TPS62743 is optimized to provide a low output voltage ripple and low noise using a small output capacitor. Once the input voltage comes close to the output voltage the device enters the No Ripple 100% mode to prevent an increase of output ripple voltage. In this operation mode the device stops switching and turns the high side MOSFET switch on.
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技術文件

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重要文件 類型 標題 格式選項 下載最新的英文版本 日期
* 資料表 TPS62743TPS627431300/400 mA High Efficiency Buck Converter with Ultra-low Quiescent Current datasheet (Rev. B) PDF | HTML 2021/3/19
技術文章 如何設計更小巧、兩次充電間可使用更久的穿戴式裝置 PDF | HTML PDF | HTML 2026/5/22
應用說明 Quick Reference Guide To TI Buck Switching DC/DC Application Notes (Rev. B) PDF | HTML 2022/5/23
選擇指南 Buck Converter Quick Reference Guide (Rev. B) 2021/4/8
白皮書 Extending Battery Life in Smart E-Locks (Rev. A) 2020/6/4
白皮書 Benefits of a Resistor-to-Digital Converter in Ultra-Low Power Supplies 2019/10/14
類比設計期刊 Methods of output-voltage adjustment for DC/DC converters 2019/6/14
類比設計期刊 Understanding 100% mode in low-power DC/DC converters 2018/6/22
類比設計期刊 Achieving a clean startup by using a DC/DC converter with a precise enable-pin threshold 2017/10/24
技術文章 Never lose your luggage again with a smart tracker design PDF | HTML 2017/10/20
類比設計期刊 Testing tips for applying external power to supply outputs without an input voltage 2016/10/24
測試報告 Power Management Reference Design for a Wearable Device with Wireless Charging (Rev. A) PDF | HTML 2016/4/14
類比設計期刊 Understanding frequency variation in the DCS-Control(TM) topology 2015/10/30

設計與開發

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開發板

TPS62743EVM-689 — TPS62743 超低 Iq 降壓轉換器評估模組

TPS62743EVM-689 旨在協助使用者輕鬆評估和測試 TPS62743 的運作和功能。EVM 將 2.0V 至 5.5V 輸入電壓轉換為穩壓輸出，輸出電壓可設定在 1.2V 和 3.3V 之間，最高可達 300mA。TPS62743 為小型 1.6 x 0.9mm² WCSP 封裝。其具有 360nA 的超低靜態電流。

使用指南: PDF
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模擬型號

TPS62743 PSpice Unencrypted Transient Model (Rev. A)

SLVMAU9A.ZIP (101 KB) - PSpice 模型
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參考設計

PMP11311 — 採用 bq51003 和 bq25120 進行無線充電的穿戴式裝置電源參考設計

穿戴式裝置需要先進的電源管理，以延長電池運作時間且提供常開功能。  此外，裝置需要使用小型可充電電池，並實現小體積設計。  此應用說明展示了針對穿戴式裝置的可擴充電源管理解決方案的實作情形，可針對活動監控器或智慧手錶量身打造。此設計提供無線充電輸入、可高度配置的電池管理解決方案，搭載鋰離子電池充電器和低靜態電流 (Iq) DC/DC 降壓；適用於 PMOLED 顯示的升壓轉換器；適用於心率監測器 (HRM) 的升壓轉換器，以及第二個可配置低 Iq DC/DC 降壓轉換器。

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DSBGA (YFP) 8 Ultra Librarian
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