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AC/DC 和 DC/DC 轉換器 (整合式 FET)

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，但引腳輸出與所比較的裝置不同
TPS62840 現行 60-nA 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
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

TPS62743

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 85 Topology Buck Type Converter Iout (max) (A) 0.3 Vin (min) (V) 2 Vin (max) (V) 5.5 Switching frequency (min) (kHz) 1200 Switching frequency (max) (kHz) 1200 Features Adaptive/Dynamic Voltage Scaling, Enable, Light Load Efficiency, Light load efficiency, Output discharge, Synchronous Rectification Control mode Constant on-time (COT), DCS-Control Vout (min) (V) 1.2, 1.3 Vout (max) (V) 3.1, 3.3 Iq (typ) (µA) 0.3 Duty cycle (max) (%) 100
Rating Catalog Operating temperature range (°C) -40 to 85 Topology Buck Type Converter Iout (max) (A) 0.3 Vin (min) (V) 2 Vin (max) (V) 5.5 Switching frequency (min) (kHz) 1200 Switching frequency (max) (kHz) 1200 Features Adaptive/Dynamic Voltage Scaling, Enable, Light Load Efficiency, Light load efficiency, Output discharge, Synchronous Rectification Control mode Constant on-time (COT), DCS-Control Vout (min) (V) 1.2, 1.3 Vout (max) (V) 3.1, 3.3 Iq (typ) (µA) 0.3 Duty cycle (max) (%) 100
DSBGA (YFP) 8 1.8 mm² 1 x 1.8
  • 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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類型 標題 日期
* Data sheet TPS62743TPS627431300/400 mA High Efficiency Buck Converter with Ultra-low Quiescent Current datasheet (Rev. B) PDF | HTML 2021年 3月 19日
Technical article How to design wearables that are smaller and go longer between charges PDF | HTML 2024年 1月 5日
Application note Quick Reference Guide To TI Buck Switching DC/DC Application Notes (Rev. B) PDF | HTML 2022年 5月 23日
Selection guide Buck Converter Quick Reference Guide (Rev. B) 2021年 4月 8日
White paper Extending Battery Life in Smart E-Locks (Rev. A) 2020年 6月 4日
White paper Benefits of a Resistor-to-Digital Converter in Ultra-Low Power Supplies 2019年 10月 14日
Analog Design Journal Methods of output-voltage adjustment for DC/DC converters 2019年 6月 14日
Analog Design Journal Understanding 100% mode in low-power DC/DC converters 2018年 6月 22日
Analog Design Journal Achieving a clean startup by using a DC/DC converter with a precise enable-pin threshold 2017年 10月 24日
Technical article Never lose your luggage again with a smart tracker design PDF | HTML 2017年 10月 20日
Analog Design Journal Testing tips for applying external power to supply outputs without an input voltage 2016年 10月 24日
Test report Power Management Reference Design for a Wearable Device with Wireless Charging (Rev. A) PDF | HTML 2016年 4月 14日
EVM User's guide TPS62743EVM-689 Evaluation Module User's Guide (Rev. A) 2016年 1月 28日
Analog Design Journal Understanding frequency variation in the DCS-Control(TM) topology 2015年 10月 30日

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

The TPS62743EVM-689 is designed to help the user easily evaluate and test the operation and functionality of the TPS62743. The EVM converts a 2.0-V to 5.5-V input voltage to a regulated output that is set between 1.2 V and 3.3 V at up to 300 mA. The TPS62743 comes in a small 1.6 x 0.9 mm² WCSP (...)

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 Model
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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

Wearable devices require advanced power management to achieve long battery run times with always-on functionality.  Additionally, the devices need to use small rechargeable batteries and enable small footprint designs.  This application note shows the implementation of a scalable power (...)
Test report: PDF
電路圖: PDF
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