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TPS62770

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TPS62770

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产品详情

Rating Catalog Topology Buck Iout (max) (A) 0.3 Vin (max) (V) 5.5 Vin (min) (V) 2.5 Vout (max) (V) 15 Vout (min) (V) 1 Features Adaptive/Dynamic Voltage Scaling, Enable, Light load efficiency, Output discharge, Over Current Protection, Soft Start Fixed, Synchronous Rectification, UVLO fixed Control mode DCS-Control Operating temperature range (°C) -40 to 85 Iq (typ) (A) 0.00000037 Duty cycle (max) (%) 100
Rating Catalog Topology Buck Iout (max) (A) 0.3 Vin (max) (V) 5.5 Vin (min) (V) 2.5 Vout (max) (V) 15 Vout (min) (V) 1 Features Adaptive/Dynamic Voltage Scaling, Enable, Light load efficiency, Output discharge, Over Current Protection, Soft Start Fixed, Synchronous Rectification, UVLO fixed Control mode DCS-Control Operating temperature range (°C) -40 to 85 Iq (typ) (A) 0.00000037 Duty cycle (max) (%) 100
DSBGA (YFP) 16 3.24 mm² (— mm × — mm)
  • VIN Range 2.5 V to 5.5 V
  • 370 nA Iq Step-Down Converter
    • 8 Selectable Output Voltages (1.0V to 3.0V)
    • 300 mA Output Current
    • Output Discharge Function
  • Slew Rate Controlled Load Switch with Discharge
    Function
  • Dual Mode Step-Up Converter
    • Load Disconnect
    • Constant Output Voltage Adjustable up to 15 V
      (VFB 0.8 V) / 12 V Fixed
    • LED Current Driver with PWM to Current
      Conversion (max VFB Voltage 200 mV @ D =
      100%)
  • Tiny 16pin 1.58 × 1.58mm WCSP Package 0.4mm
    pitch
  • VIN Range 2.5 V to 5.5 V
  • 370 nA Iq Step-Down Converter
    • 8 Selectable Output Voltages (1.0V to 3.0V)
    • 300 mA Output Current
    • Output Discharge Function
  • Slew Rate Controlled Load Switch with Discharge
    Function
  • Dual Mode Step-Up Converter
    • Load Disconnect
    • Constant Output Voltage Adjustable up to 15 V
      (VFB 0.8 V) / 12 V Fixed
    • LED Current Driver with PWM to Current
      Conversion (max VFB Voltage 200 mV @ D =
      100%)
  • Tiny 16pin 1.58 × 1.58mm WCSP Package 0.4mm
    pitch

The TPS62770 is a tiny power solution for wearable applications including a 370nA ultra low Iq step-down converter, a slew rate controlled load switch and a dual mode step-up converter. The output voltage of the step-down converter can be selected with three VSEL pins between 1.0 V, 1.05 V, 1.1 V, 1.2 V, 1.8 V, 1.9 V, 2.0 V and 3.0 V. The output voltage can be changed during operation. In shutdown mode, the output of the step-down converter is pulled to GND. The integrated load switch is internally connected to the output of the step-down converter and features slew rate control during turn on phase. Once turned off, its output is connected to GND.

The dual mode step-up converter can generate a constant output voltage up to 15 V, such as PMOLED supply; or, a constant output current, such as LED back light supply. The output voltage can be adjusted up to 15 V with external resistors, or set to fixed 12 V by connecting the FB pin to VIN. The device features an internal over voltage protection of 17.7 V in case the FB node is left open or tight to GND. It includes an internal rectifier and load disconnect function. When used as constant output current driver, the device offers a PWM to analog converter to scale down the reference voltage according to the duty cycle of the PWM signal.

The device is available in a small 16pin 0.4mm pitch WCSP package.

The TPS62770 is a tiny power solution for wearable applications including a 370nA ultra low Iq step-down converter, a slew rate controlled load switch and a dual mode step-up converter. The output voltage of the step-down converter can be selected with three VSEL pins between 1.0 V, 1.05 V, 1.1 V, 1.2 V, 1.8 V, 1.9 V, 2.0 V and 3.0 V. The output voltage can be changed during operation. In shutdown mode, the output of the step-down converter is pulled to GND. The integrated load switch is internally connected to the output of the step-down converter and features slew rate control during turn on phase. Once turned off, its output is connected to GND.

The dual mode step-up converter can generate a constant output voltage up to 15 V, such as PMOLED supply; or, a constant output current, such as LED back light supply. The output voltage can be adjusted up to 15 V with external resistors, or set to fixed 12 V by connecting the FB pin to VIN. The device features an internal over voltage protection of 17.7 V in case the FB node is left open or tight to GND. It includes an internal rectifier and load disconnect function. When used as constant output current driver, the device offers a PWM to analog converter to scale down the reference voltage according to the duty cycle of the PWM signal.

The device is available in a small 16pin 0.4mm pitch WCSP package.
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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 TPS62770 Multi-Rail DC/DC Converter For Wearable Applications 数据表 (Rev. B) PDF | HTML 2016-4-11
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
白皮书 Benefits of a Resistor-to-Digital Converter in Ultra-Low Power Supplies 2019-10-14
模拟设计期刊 Methods of output-voltage adjustment for DC/DC converters 2019-6-14
模拟设计期刊 Understanding 100% mode in low-power DC/DC converters 2018-6-22
模拟设计期刊 Testing tips for applying external power to supply outputs without an input voltage 2016-10-24

设计与开发

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评估板

TPS62770EVM-734 — TPS62770 多轨直流/直流转换器评估模块

TPS62770EVM-734 旨在帮助用户轻松评估和测试 TPS62770 多轨直流/直流转换器的运行情况和功能。该评估模块 (EVM) 提供两个独立的功率级解决方案（针对小型解决方案进行了优化并提供完整的功能集）。该功率级从 2.0V 至 5.5V 的输入电压提供两条电源轨。可在 1.0V 到 3.3V 范围内以数字方式调节降压轨。升压轨电压最高可达 15V。

用户指南: PDF
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无货
仿真模型

TPS62770 PSpice Unencrypted Transient Model (Rev. A)

SLVMBI1A.ZIP (280 KB) - PSpice 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

PMP21884 — 适用于可穿戴设备且具有电池充电功能的微型、超低 IQ 直流/直流电源

这是一款高度集成的超小型 (48sqmm) 电源参考设计，适用于智能手表和健身追踪器，可实现超低 IQ。电源包括七个电源轨，其中包括电池充电器、LDO、直流/直流降压转换器和用于心率监测的集成升压转换器、AFE LED 驱动电源或 PMOLED 偏置。
支持的产品和硬件
参考设计

PMP9792 — 适用于可穿戴应用的多轨低 Iq 电源参考设计

智能腕带等可穿戴应用提供两个主要电源轨来为无线 MCU、传感器和显示屏供电。它们尺寸非常小，因此需要尽可能小的解决方案尺寸。该参考设计展示了一个基于 TPS62770 多轨直流/直流转换器、CC2650 无线 MCU 和 PMOLED 显示屏的完整解决方案。
支持的产品和硬件
封装 引脚 CAD 符号、封装和 3D 模型
DSBGA (YFP) 16 Ultra Librarian
适用于评估类项目的 TI 标准条款与条件。

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