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TPS62122

現行

15V 75mA 96% 效率的降壓轉換器

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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
功能與所比較的裝置相似
TPS629203 現行 採用 SOT-583 封裝的 3V 至 17V、0.3A、低 IQ 同步降壓轉換器 Improved efficiency, smaller size and lower IQ.

TPS62122

現行
產品規格表 立即訂購

產品詳細資料

Rating Catalog Topology Buck Iout (max) (A) 0.075 Vin (max) (V) 15 Vin (min) (V) 2 Vout (max) (V) 5.5 Vout (min) (V) 1.2 Features Enable, Light-load efficiency, Synchronous rectification Control mode Constant on-time (COT), DCS-Control Operating temperature range (°C) -40 to 85 Iq (typ) (A) 0.000011 Duty cycle (max) (%) 100
Rating Catalog Topology Buck Iout (max) (A) 0.075 Vin (max) (V) 15 Vin (min) (V) 2 Vout (max) (V) 5.5 Vout (min) (V) 1.2 Features Enable, Light-load efficiency, Synchronous rectification Control mode Constant on-time (COT), DCS-Control Operating temperature range (°C) -40 to 85 Iq (typ) (A) 0.000011 Duty cycle (max) (%) 100
WSON (DRV) 6 4 mm² 2 x 2
  • Wide Input Voltage Range: 2 V to 15 V
  • Up to 96% Efficiency
  • Power Save Mode With 11-µA Quiescent Current
  • Output Current 75 mA
  • Output Voltage Range: 1.2 V to 5.5 V
  • Up to 800-kHz Switch Frequency
  • Synchronous Converter, No External Rectifier
  • Low Output Ripple Voltage
  • 100% Duty Cycle for Lowest Dropout
  • Small SOT 8-Pin (TPS62120) and 2-mm × 2-mm
    DFN 6-Pin (TPS62122) Package
  • Internal Soft Start
  • Power Good Open Drain Output (TPS62120)
  • Open-Drain Output for Output Discharge
    (TPS62120)
  • 2.5-V Rising and 1.85-V Falling UVLO Thresholds
  • Wide Input Voltage Range: 2 V to 15 V
  • Up to 96% Efficiency
  • Power Save Mode With 11-µA Quiescent Current
  • Output Current 75 mA
  • Output Voltage Range: 1.2 V to 5.5 V
  • Up to 800-kHz Switch Frequency
  • Synchronous Converter, No External Rectifier
  • Low Output Ripple Voltage
  • 100% Duty Cycle for Lowest Dropout
  • Small SOT 8-Pin (TPS62120) and 2-mm × 2-mm
    DFN 6-Pin (TPS62122) Package
  • Internal Soft Start
  • Power Good Open Drain Output (TPS62120)
  • Open-Drain Output for Output Discharge
    (TPS62120)
  • 2.5-V Rising and 1.85-V Falling UVLO Thresholds

The TPS6212x device is a highly efficient synchronous step-down DC-DC converter optimized for low-power applications. The device supports up to 75-mA output current and allows the use of tiny external inductors and capacitors.

The wide operating input voltage range of 2 V to 15 V supports energy harvesting, battery powered and as well 9-V or 12-V line powered applications.

With its advanced hysteretic control scheme, the converter provides power save mode operation. At light loads the converter operates in pulse frequency modulation (PFM) mode and transitions automatically in pulse width modulation (PWM) mode at higher load currents. The power save mode maintains high efficiency over the entire load current range. The hysteretic control scheme is optimized for low output ripple voltage in PFM mode in order to reduce output noise to a minimum. The device consumes only 10-µA quiescent current from VIN in PFM mode operation.

In shutdown mode, the device is turned off.

An open-drain power good output is available in the TPS62120 and indicates once the output voltage is in regulation.

The TPS62120 has an additional SGND pin which is connected to GND during shutdown mode. This output can be used to discharge the output capacitor.

The TPS6212x operates over an free air temperature range of –40°C to 85°C. The TPS62120 is available in a small 8-pin SOT-23 package and the TPS62122 in a 2 mm × 2 mm 6-pin DFN package.

The TPS6212x device is a highly efficient synchronous step-down DC-DC converter optimized for low-power applications. The device supports up to 75-mA output current and allows the use of tiny external inductors and capacitors.

The wide operating input voltage range of 2 V to 15 V supports energy harvesting, battery powered and as well 9-V or 12-V line powered applications.

With its advanced hysteretic control scheme, the converter provides power save mode operation. At light loads the converter operates in pulse frequency modulation (PFM) mode and transitions automatically in pulse width modulation (PWM) mode at higher load currents. The power save mode maintains high efficiency over the entire load current range. The hysteretic control scheme is optimized for low output ripple voltage in PFM mode in order to reduce output noise to a minimum. The device consumes only 10-µA quiescent current from VIN in PFM mode operation.

In shutdown mode, the device is turned off.

An open-drain power good output is available in the TPS62120 and indicates once the output voltage is in regulation.

The TPS62120 has an additional SGND pin which is connected to GND during shutdown mode. This output can be used to discharge the output capacitor.

The TPS6212x operates over an free air temperature range of –40°C to 85°C. The TPS62120 is available in a small 8-pin SOT-23 package and the TPS62122 in a 2 mm × 2 mm 6-pin DFN package.
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功能相同，但引腳輸出與所比較的裝置不同
TPS62120 現行 具備 DCS 控制的 15V、75mA、96% 效率降壓轉換器 Same product with PG pin in a different package.

技術文件

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重要文件 類型 標題 格式選項 日期
* Data sheet TPS6212x 15-V, 75-mA Highly Efficient Buck Converter datasheet (Rev. A) PDF | HTML 2015年 7月 31日
Application note QFN and SON PCB Attachment (Rev. C) PDF | HTML 2023年 12月 6日
Application note Using the TPS62120 in an Inverting Buck-Boost Topology (Rev. C) PDF | HTML 2022年 11月 29日
Application note Quick Reference Guide To TI Buck Switching DC/DC Application Notes (Rev. B) PDF | HTML 2022年 5月 23日
Analog Design Journal Methods of output-voltage adjustment for DC/DC converters 2019年 6月 14日
Application note Performing Accurate PFM Mode Efficiency Measurements (Rev. A) 2018年 12月 11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
Application note Extending the Soft Start Time Without a Soft Start Pin (Rev. B) 2017年 6月 15日
Technical article Cutting the last wire to unleash Industry 4.0 PDF | HTML 2016年 10月 27日
Analog Design Journal Testing tips for applying external power to supply outputs without an input voltage 2016年 10月 24日
Analog Design Journal Understanding frequency variation in the DCS-Control(TM) topology 2015年 10月 30日
Application note Basic Calculation of a Buck Converter's Power Stage (Rev. B) 2015年 8月 17日
Analog Design Journal Five steps to a great PCB layout for a step-down converter 2015年 1月 29日
Analog Design Journal High-efficiency, low-ripple DCS-Control offers seamless PWM/pwr-save transitions 2013年 7月 25日
Application note How to Measure the Control Loop of DCS-Control Devices (Rev. A) 2012年 8月 9日
Analog Design Journal Design considerations for a resistive feedback divider in a DC/DC converter 2012年 4月 26日
Application note Understanding the Absolute Maximum Ratings of the SW Node (Rev. A) 2012年 1月 13日
Application note Powering the MSP430 from a High Voltage Input using the TPS62122 (Rev. C) 2012年 1月 12日
Analog Design Journal IQ: What it is, what it isn’t, and how to use it 2011年 6月 17日

設計與開發

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開發板

TPS62122EVM-586 — TPS62122 評估模組

The TPS62122EVM-586 is a fully assembled and tested platform for evaluating the operation and performance of the TPS62122 converter. The TPS62122EVM-586 has an input voltage range from 2.0 V up to 15 V, and the output voltage is adjustable with an external feedback divider network in the range of (...)

使用指南: PDF
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模擬型號

TPS62122 PSpice Unencrypted Transient Model (Rev. B)

SLIM217B.ZIP (218 KB) - PSpice Model
下載
模擬型號

TPS62122 TINA-TI Transient Reference Design

SLVM314.TSC (862 KB) - TINA-TI Reference Design
下載
模擬型號

TPS62122 TINA-TI Transient Spice Model

SLVM315.ZIP (44 KB) - TINA-TI Spice Model
下載
計算工具

SLVC780 — Design Tool for Output Voltage Adjustment Using a DAC

Calculator tool to adjust the power supply's output voltage with an analog input voltage
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參考設計

TIDA-00690 — 無線開關電源能源採集參考設計

TIDA-00690 參考設計提供能源採集開關的解決方案。此開關的構建方式如同線性發電機，可將機械能轉換為電能。由於 TIDA-00690 設計，能以最佳方式採集電能。此設計允許對閥門或其他機械致動器、緊急開關和機器起止控制器進行無線位置控制。此外，採用無線技術可提高系統彈性和運作時間，例如在機械振動或化學腐蝕性環境可能會使電線不切實際時。
Design guide: PDF
電路圖: PDF
封裝 針腳 CAD 符號、佔位空間與 3D 模型
WSON (DRV) 6 Ultra Librarian
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