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TPS62112

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采用 QFN-16 封装的 5V、1.5A，17V 输入电压降压转换器

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TPS62112

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产品详情

Rating Catalog Topology Buck Iout (max) (A) 1.5 Vin (max) (V) 17 Vin (min) (V) 3.1 Vout (max) (V) 5 Vout (min) (V) 5 Features Enable, Forced PWM, Frequency synchronization, Light Load Efficiency, Power good, Synchronous Rectification Control mode Voltage mode Operating temperature range (°C) -40 to 85 Iq (typ) (A) 0.00002 Duty cycle (max) (%) 100
Rating Catalog Topology Buck Iout (max) (A) 1.5 Vin (max) (V) 17 Vin (min) (V) 3.1 Vout (max) (V) 5 Vout (min) (V) 5 Features Enable, Forced PWM, Frequency synchronization, Light Load Efficiency, Power good, Synchronous Rectification Control mode Voltage mode Operating temperature range (°C) -40 to 85 Iq (typ) (A) 0.00002 Duty cycle (max) (%) 100
VQFN (RSA) 16 16 mm² (4 mm × 4 mm)
  • High-Efficiency Synchronous Step-Down
    Converter With up to 95% Efficiency
  • 3.1-V to 17-V Operating Input Voltage Range
  • Adjustable Output Voltage Range: 1.2 V to 16 V
  • Fixed Output Voltage Options Available in
    3.3 V and 5 V
  • Synchronizable to External Clock: Up to 1.4 MHz
  • Up to 1.5-A Output Current
  • High Efficiency Over a Wide Load-Current
    Range Due to PFM/PWM Operation Mode
  • 100% Maximum Duty Cycle for Lowest Dropout
  • 20-µA Quiescent Current (Typical)
  • Overtemperature and Overcurrent Protected
  • Available in 16-Pin VQFN Package
  • High-Efficiency Synchronous Step-Down
    Converter With up to 95% Efficiency
  • 3.1-V to 17-V Operating Input Voltage Range
  • Adjustable Output Voltage Range: 1.2 V to 16 V
  • Fixed Output Voltage Options Available in
    3.3 V and 5 V
  • Synchronizable to External Clock: Up to 1.4 MHz
  • Up to 1.5-A Output Current
  • High Efficiency Over a Wide Load-Current
    Range Due to PFM/PWM Operation Mode
  • 100% Maximum Duty Cycle for Lowest Dropout
  • 20-µA Quiescent Current (Typical)
  • Overtemperature and Overcurrent Protected
  • Available in 16-Pin VQFN Package

The TPS6211x devices are a family of low-noise synchronous step-down DC-DC converters that are ideally suited for systems powered from a 2- to 4-cell Li-ion battery or from a 12-V or 15-V rail.

The TPS6211x devices are synchronous pulse width modulation (PWM) converters with integrated N- and P-channel power MOSFET switches. Synchronous rectification is used to increase efficiency and to reduce external component count. To achieve highest efficiency over a wide load-current range, the converter enters a power-saving, pulse frequency modulation (PFM) mode at light load currents. Operating frequency is typically 1 MHz, allowing the use of small inductor and capacitor values. The device can be synchronized to an external clock signal in the range of 0.8 MHz to 1.4 MHz. For low-noise operation, the converter can be operated in PWM-only mode. In shutdown mode, the current consumption is reduced to less than 2 µA. The TPS6211x family of devices are available in the 16-pin (RSA) VQFN package, and operate over a free-air temperature range of –40°C to 85°C.

The TPS6211x devices are a family of low-noise synchronous step-down DC-DC converters that are ideally suited for systems powered from a 2- to 4-cell Li-ion battery or from a 12-V or 15-V rail.

The TPS6211x devices are synchronous pulse width modulation (PWM) converters with integrated N- and P-channel power MOSFET switches. Synchronous rectification is used to increase efficiency and to reduce external component count. To achieve highest efficiency over a wide load-current range, the converter enters a power-saving, pulse frequency modulation (PFM) mode at light load currents. Operating frequency is typically 1 MHz, allowing the use of small inductor and capacitor values. The device can be synchronized to an external clock signal in the range of 0.8 MHz to 1.4 MHz. For low-noise operation, the converter can be operated in PWM-only mode. In shutdown mode, the current consumption is reduced to less than 2 µA. The TPS6211x family of devices are available in the 16-pin (RSA) VQFN package, and operate over a free-air temperature range of –40°C to 85°C.
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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 TPS6211x 17-V, 1.5-A, Synchronous Step-Down Converter 数据表 (Rev. E) PDF | HTML 2015-6-18
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 设计电压监控器的电阻分压器输入端时的 IQ与精度权衡因素 (Rev. B) PDF | HTML 英语版 (Rev.B) PDF | HTML 2021-10-25
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
应用手册 Optimizing Transient Response of Internally Compensated DC-DC Converters (Rev. B) 2017-11-29
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
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
应用手册 Understanding the Absolute Maximum Ratings of the SW Node (Rev. A) 2012-1-13
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

TPS62110EVM-101 — TPS62110 评估模块

The TPS62110EVM-101 is an evaluation tool for the TPS6211x family of high efficiency inductive step-down converters in a 4x4 QFN package. They feature an adjustable or 3.3V and 5V fixed Output option, a maximum of 17V Input Voltage and up to 1.5A Output current. TPS6211x family can supply voltages (...)

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仿真模型

TPS62112 Unencrypted PSpice Transient Model Package (Rev. A)

SLVM330A.ZIP (61 KB) - PSpice 模型
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计算工具

SLVC532 — TPS6211x Low Battery Hysteresis Design Tool - Excel

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计算工具

TPS62113LBIH-CALC — TPS6211x 系列低电池输入滞后计算工具

TPS62213LBIH-CALC 可用于计算 TPS62113（TPS6211x：TPS62110、TPS62111、TPS62112、TPS62113）所需的正确电阻值，为您的应用获取低电池输入适当的滞后。

多个降压转换器提供的低电量输入 (LBI) 通常用于在输入电压低于设置的阈值时关闭转换器。电池在其寿命结束时应当充电或更换，这可防止对电池和信号造成损坏。具有内部电阻的电池在负载提高时会导致电压下降。在监控电池级别时，这种内部电阻会带来挑战。当转换器关闭并且电流降至零时，通过电池的内部电阻降低的电流导致电池的终端电压升高。在许多情况下，电压升高到 LBI (...)

支持的产品和硬件
封装 引脚 CAD 符号、封装和 3D 模型
VQFN (RSA) 16 Ultra Librarian
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