采用 280mA 自动拉电流 LDO 稳压器的汽车类 3.6V 至 36V 3.2A 降压转换器

TPS65320-Q1 不推荐用于新设计
虽然我们会继续生产此产品供先前的设计使用,但不推荐在新设计中使用此产品。请考虑从这些替代产品中选择一款:
open-in-new 比较替代产品
功能优于比较器件,可直接替换
TPS65320D-Q1 正在供货 采用 280mA 自动拉电流 LDO 稳压器的汽车类 3.6V 至 36V、3.2A 降压转换器 The TPS65320D-Q1 is a replacement for the TPS65320-Q1.

产品详情

Vin (min) (V) 3.6 Vin (max) (V) 36 Vout (min) (V) 1.1 Vout (max) (V) 20 Iout (max) (A) 3.2 Features Eco-mode, Enable, Overcurrent protection, Power good, Thermal shutdown Iq (typ) (mA) 0.14 Rating Automotive Switching frequency (max) (kHz) 2500 Operating temperature range (°C) -40 to 125 Processor supplier Generic Processor name Generic Shutdown current (ISD) (typ) (µA) 2 Product type Microcontrollers
Vin (min) (V) 3.6 Vin (max) (V) 36 Vout (min) (V) 1.1 Vout (max) (V) 20 Iout (max) (A) 3.2 Features Eco-mode, Enable, Overcurrent protection, Power good, Thermal shutdown Iq (typ) (mA) 0.14 Rating Automotive Switching frequency (max) (kHz) 2500 Operating temperature range (°C) -40 to 125 Processor supplier Generic Processor name Generic Shutdown current (ISD) (typ) (µA) 2 Product type Microcontrollers
HTSSOP (PWP) 14 32 mm² 5 x 6.4
  • Qualified for Automotive Applications
  • AEC-Q100 Qualified With the Following Results:
    • Device Temperature Grade 1: –40°C to +125°C Ambient Operating Temperature
    • Device HBM ESD Classification Level 2
    • Device CDM ESD Classification Level C4B
  • One High-VIN Step-Down Converter
    • 3.6- to 40-V Input Range
    • 250-mΩ High-Side MOSFET
      • 3.2-A Maximum Load Current, 1.1- to 20-V Output Adjustable
    • 100-kHz to 2.5-MHz Adjustable Switch-Mode Frequency
    • Less Than 140-µA Operating Quiescent Current
  • One Low-Dropout Voltage Regulator (LDO)
    • 280-mA Current Capability With 28-μA (Typical) Operating Quiescent Current in No-Load Condition
    • Input Supply Auto-Source to Balance Efficiency and Low Standby Current
    • Power-Good Output (Push-Pull)
    • Low-Dropout Voltage of 300 mV at IOUT = 200 mA (Typical)
  • Overcurrent Protection for Both Regulators
  • Overtemperature Protection
  • 14-Pin HTSSOP Package With PowerPAD Package

All trademarks are the property of their respective owners.

  • Qualified for Automotive Applications
  • AEC-Q100 Qualified With the Following Results:
    • Device Temperature Grade 1: –40°C to +125°C Ambient Operating Temperature
    • Device HBM ESD Classification Level 2
    • Device CDM ESD Classification Level C4B
  • One High-VIN Step-Down Converter
    • 3.6- to 40-V Input Range
    • 250-mΩ High-Side MOSFET
      • 3.2-A Maximum Load Current, 1.1- to 20-V Output Adjustable
    • 100-kHz to 2.5-MHz Adjustable Switch-Mode Frequency
    • Less Than 140-µA Operating Quiescent Current
  • One Low-Dropout Voltage Regulator (LDO)
    • 280-mA Current Capability With 28-μA (Typical) Operating Quiescent Current in No-Load Condition
    • Input Supply Auto-Source to Balance Efficiency and Low Standby Current
    • Power-Good Output (Push-Pull)
    • Low-Dropout Voltage of 300 mV at IOUT = 200 mA (Typical)
  • Overcurrent Protection for Both Regulators
  • Overtemperature Protection
  • 14-Pin HTSSOP Package With PowerPAD Package

All trademarks are the property of their respective owners.

The TPS65320-Q1 device is a combination of a 40-V, 3.2-A, DC-DC step-down converter and a low-dropout (LDO) regulator. The DC-DC step-down converter, referred to as the buck regulator, has an integrated high-side MOSFET. The LDO regulator also has an integrated MOSFET and a low-input supply current of 28-μA (typical) in a no-load condition. Furthermore, the LDO regulator has an active-low, push-pull reset output pin. To reduce heat, the input supply of the LDO regulator can auto-source from the input voltage to the output of the buck regulator. The low-voltage tracking feature can eliminate the need to use a boost converter during cold-crank conditions.

The buck regulator has a switching frequency range from 100 kHz to 2.5 MHz that provides a flexible design to fix system requirements. The external loop compensation allows for optimization of the converter response for the appropriate operating conditions. A low-ripple pulse-skip mode reduces the no-load input supply current to less than 140 μA.

The device has built-in protection features such as soft start, current limit, thermal sensing, and shutdown because of excessive power dissipation. Furthermore, the device has an internal undervoltage-lockout (UVLO) function that turns off the device at a too-low supply voltage.

The TPS65320-Q1 device is a combination of a 40-V, 3.2-A, DC-DC step-down converter and a low-dropout (LDO) regulator. The DC-DC step-down converter, referred to as the buck regulator, has an integrated high-side MOSFET. The LDO regulator also has an integrated MOSFET and a low-input supply current of 28-μA (typical) in a no-load condition. Furthermore, the LDO regulator has an active-low, push-pull reset output pin. To reduce heat, the input supply of the LDO regulator can auto-source from the input voltage to the output of the buck regulator. The low-voltage tracking feature can eliminate the need to use a boost converter during cold-crank conditions.

The buck regulator has a switching frequency range from 100 kHz to 2.5 MHz that provides a flexible design to fix system requirements. The external loop compensation allows for optimization of the converter response for the appropriate operating conditions. A low-ripple pulse-skip mode reduces the no-load input supply current to less than 140 μA.

The device has built-in protection features such as soft start, current limit, thermal sensing, and shutdown because of excessive power dissipation. Furthermore, the device has an internal undervoltage-lockout (UVLO) function that turns off the device at a too-low supply voltage.

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技术文档

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类型 标题 下载最新的英语版本 日期
* 数据表 TPS65320-Q1 40-V Step-Down Converter With Eco-mode and LDO Regulator 数据表 (Rev. F) PDF | HTML 2016年 3月 7日
应用手册 Low Quiescent Current With Asynchronous Buck-Converters at High Temperatures 2016年 7月 20日
应用手册 TPS65320C-Q1 Auto-Source Feature 2016年 7月 11日
技术文章 How a Wide VIN integrated buck and LDO can power your automotive system – part 1 PDF | HTML 2016年 6月 10日
应用手册 TPS65320-Q1 and TPS65320C-Q1 Design Checklist (Rev. B) 2016年 4月 13日
应用手册 Interfacing TPS57xxx-Q1 and TPS65320-Q1 Family Devices With Low Impendence Exter 2015年 12月 8日
EVM 用户指南 TPS65320EVM User's Guide (Rev. A) 2015年 8月 18日
应用手册 CISPR25 Radiated Emissions Using TPS65320-Q1 (Rev. A) 2015年 6月 3日
白皮书 Power Management IC (PMIC) Guide for Automotive (Rev. A) 2014年 10月 29日

设计和开发

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

TPS65320C-EVM — 具有 EcoMode 和 LDO 稳压器的 36V 降压转换器评估模块

德州仪器 (TI) TPS65320C-EVM 评估模块 (EVM) 能帮助设计者评估 TPS65320C-Q1 的操作和性能,TPS65320C-Q1 是具有集成低压差电压稳压器的开关模式直流到直流降压转换器。
用户指南: PDF
TI.com 上无现货
仿真模型

TPS65320-Q1 TINA-TI Average Reference Design

SLVM905.TSC (686 KB) - TINA-TI Reference Design
仿真模型

TPS65320-Q1 TINA-TI Transient Reference Design

SLVM770.TSC (583 KB) - TINA-TI Reference Design
计算工具

TPS65320-Q1-SMPS-CAL-TOOL TPS65320-Q1 Switching Mode Power Supply Component Calculation Tool

TPS65320-Q1 Switching Mode Power Supply Component Calculation Tool helps design the power stage and compensation network for DC/DC converter. It is also a great assistance for getting a deeper understanding of the AC response analysis for TPS65320-Q1

This worksheet includes two segments:

1. (...)

支持的产品和硬件

支持的产品和硬件

产品
多通道 IC (PMIC)
TPS65320-Q1 采用 280mA 自动拉电流 LDO 稳压器的汽车类 3.6V 至 36V 3.2A 降压转换器 TPS65320D-Q1 采用 280mA 自动拉电流 LDO 稳压器的汽车类 3.6V 至 36V、3.2A 降压转换器
封装 引脚 下载
HTSSOP (PWP) 14 查看选项

订购和质量

包含信息:
  • RoHS
  • REACH
  • 器件标识
  • 引脚镀层/焊球材料
  • MSL 等级/回流焊峰值温度
  • MTBF/时基故障估算
  • 材料成分
  • 鉴定摘要
  • 持续可靠性监测
包含信息:
  • 制造厂地点
  • 封装厂地点

支持和培训

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