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TPS62122

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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.

TPS62122

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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, 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 mm × 2 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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TPS62120 正在供货 应用 DCS-Control 技术的 15V、75mA 降压转换器，效率为 96% Same product with PG pin in a different 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 QFN 和 SON PCB 连接 (Rev. C) PDF | HTML 英语版 (Rev.C) PDF | HTML 2024-1-5
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
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
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
技术文章 Cutting the last wire to unleash Industry 4.0 PDF | HTML 2016-10-27
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
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
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

如需其他信息或资源，请点击以下任一标题进入详情页面查看（如有）。

评估板

TPS62122EVM-586 — TPS62122 评估模块

TPS62122EVM-586 是一个完全组装且经过测试的平台，用于评估 TPS62122 转换器的操作和性能。TPS62122EVM-586 的输入电压范围为 2.0V 至 15V，输出电压可以通过外部反馈除法器网络在 1.2V 至 5.5V 的范围内进行调节。EVM 电路的最大输出电流是 75mA。TPS62122 是一个针对低功耗应用进行了优化的高效同步降压 DC-DC 转换器。2V 至 15V 的宽工作输入电压范围支持能量收集和电池供电型应用以及 9V 或 12V 线路供电型应用。

用户指南: PDF
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仿真模型

TPS62122 PSpice Unencrypted Transient Model (Rev. B)

SLIM217B.ZIP (218 KB) - PSpice 模型
支持的产品和硬件
仿真模型

TPS62122 TINA-TI Transient Reference Design

SLVM314.TSC (862 KB) - TINA-TI 参考设计
支持的产品和硬件
仿真模型

TPS62122 TINA-TI Transient Spice Model

SLVM315.ZIP (44 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
参考设计

TIDA-00690 — 无线开关电源能量收集参考设计

TIDA-00690 参考设计为能量收集开关提供了解决方案。这款开关的构造如同线性发电机，可以将机械能转换为电能。借助 TIDA-00690 设计，这些电能将以最佳的方式收集。该设计支持对阀门或其他机械执行器、紧急开关和机器启停控制器进行无线位置控制。此外，无线方案可以提高系统灵活性和正常运行时间，例如当机械振动或化学侵蚀性环境可能使有线方案变得不切实际时。
支持的产品和硬件
封装 引脚 CAD 符号、封装和 3D 模型
WSON (DRV) 6 Ultra Librarian
适用于评估类项目的 TI 标准条款与条件。

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