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TPS62120

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应用 DCS-Control 技术的 15V、75mA 降压转换器，效率为 96%

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TPS629203 正在供货 采用 SOT-583 封装的 3V 至 17V、0.3A、低 IQ 同步降压转换器 Improved efficiency, smaller size and lower IQ.

TPS62120

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产品详情

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, Output discharge, Power good, 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, Output discharge, Power good, 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
SOT-23 (DCN) 8 4.64 mm² (2.9 mm × 1.6 mm)
  • 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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TPS62122 正在供货 15V、75mA 降压转换器，效率为 96% Same product without PG pin and in a smaller package.

技术文档

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顶层文档 类型 标题 格式选项 下载最新的英语版本 日期
* 数据表 TPS6212x 15-V, 75-mA Highly Efficient Buck Converter 数据表 (Rev. A) PDF | HTML 2015-7-31
应用手册 在反相降压/升压拓扑中使用 TPS62120 (Rev. C) PDF | HTML 英语版 (Rev.C) PDF | HTML 2022-12-9
应用手册 TI 降压开关直流/直流转换器应用手册的快速参考指南 (Rev. B) PDF | HTML 英语版 (Rev.B) PDF | HTML 2022-7-8
选择指南 Buck Converter Quick Reference Guide (Rev. B) 2021-4-8
模拟设计期刊 Methods of output-voltage adjustment for DC/DC converters 2019-6-14
应用手册 Performing Accurate PFM Mode Efficiency Measurements (Rev. A) 2018-12-11
选择指南 电源管理指南 2018 2018-7-31
模拟设计期刊 Understanding 100% mode in low-power DC/DC converters 2018-6-22
模拟设计期刊 Achieving a clean startup by using a DC/DC converter with a precise enable-pin threshold 2017-10-24
应用手册 Extending the Soft Start Time Without a Soft Start Pin (Rev. B) 2017-6-15
模拟设计期刊 Testing tips for applying external power to supply outputs without an input voltage 2016-10-24
模拟设计期刊 了解 DCS-Control™ 拓扑中的频率变化 英语版 2015-11-16
应用手册 Basic Calculation of a Buck Converter's Power Stage (Rev. B) PDF | HTML 2015-8-17
模拟设计期刊 实现降压型转换器出色 PCB 布局的五个步骤 英语版 2015-5-1
模拟设计期刊 高效、低纹波的分布式控制系统 (DCS)- 控制的降压转换器提供无缝的 PWM/PWR- 保存转换 英语版 2013-8-30
应用手册 How to Measure the Control Loop of DCS-Control Devices (Rev. A) 2012-8-9
模拟设计期刊 DC/DC 转换器中电阻式反馈分压器设计考虑因素 英语版 2012-6-1
白皮书 Power Management Solutions for Ultra-Low-Power 16-Bit MSP430 MCUs (Rev. D) 2012-3-28
应用手册 Understanding the Absolute Maximum Ratings of the SW Node (Rev. A) 2012-1-13
应用手册 Powering the MSP430 from a High Voltage Input using the TPS62122 (Rev. C) 2012-1-12
应用手册 Choosing an Appropriate Pull-up/Pull-down Resistor for Open Drain Outputs 2011-9-19
模拟设计期刊 IQ：它是什么、不是什么以及如何使用 英语版 2011-8-17

设计与开发

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评估板

TPS62120EVM-640 — TPS62120 评估模块

TPS62120EVM-640 是一个全组装并经过测试的平台，用于评估 TPS62120 转换器的操作和性能。TPS62120EVM-640 的输入电压范围为 2.0V 到 15V，输出电压可使用外部反馈分压网络在 1.2V 到 5.5V 的范围内调节。EVM 电路的最大输出电流是 75mA

用户指南: PDF | HTML
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仿真模型

TPS62120 PSpice Unencrypted Transient Model (Rev. A)

SLIM216A.ZIP (39 KB) - PSpice 模型
支持的产品和硬件
仿真模型

TPS62120 TINA-TI Transient Reference Design

SLVM146.TSC (864 KB) - TINA-TI 参考设计
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仿真模型

TPS62120 TINA-TI Transient Spice Model

SLVM147.ZIP (46 KB) - TINA-TI Spice 模型
支持的产品和硬件
计算工具

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
支持的产品和硬件
封装 引脚 CAD 符号、封装和 3D 模型
SOT-23 (DCN) 8 Ultra Librarian
适用于评估类项目的 TI 标准条款与条件。

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