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TPS65321A-Q1

正在供货

采用宽输入电压范围、280mA LDO 稳压器的汽车类 3.6V 至 36V 3.2A 降压转换器

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TPS65321A-Q1

正在供货
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米6体育平台手机版_好二三四详情

Regulated outputs (#) 2 Configurability Hardware configurable 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, UVLO fixed Step-up DC/DC converter 0 Step-down DC/DC converter 1 Step-down DC/DC controller 0 Step-up DC/DC controller 0 LDO 1 Iq (typ) (mA) 0.145 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
Regulated outputs (#) 2 Configurability Hardware configurable 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, UVLO fixed Step-up DC/DC converter 0 Step-down DC/DC converter 1 Step-down DC/DC controller 0 Step-up DC/DC controller 0 LDO 1 Iq (typ) (mA) 0.145 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 DC-DC Converter
    • Input Range of 3.6 V to 36 V
    • 250-mΩ High-Side MOSFET
    • Maximum Load Current 3.2 A, Output Adjustable 1.1 V to 20 V
    • Adjustable Switching Frequency 100 kHz to 2.5 MHz
    • Synchronizes to External Clock
    • High Efficiency at Light Loads With Pulse-Skipping Eco-mode™ Control Scheme
    • Maximum 140-µA Operating Quiescent Current
    • Reset Output-Pin (Active Low, Open-Drain)
  • One High-VIN Low-Dropout (LDO) Voltage Regulator
    • Input Range of 3 V to 36 V
    • 280-mA Current Capability With Typical 35-µA Quiescent Current in No-Load Condition
    • Low-Dropout Voltage of 300 mV at
      IO = 200 mA (Typical)
  • Overcurrent Protection for Both Regulators
  • Overtemperature Protection
  • 14-Pin HTSSOP Package With PowerPAD™ Integrated Circuit Package
  • 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 DC-DC Converter
    • Input Range of 3.6 V to 36 V
    • 250-mΩ High-Side MOSFET
    • Maximum Load Current 3.2 A, Output Adjustable 1.1 V to 20 V
    • Adjustable Switching Frequency 100 kHz to 2.5 MHz
    • Synchronizes to External Clock
    • High Efficiency at Light Loads With Pulse-Skipping Eco-mode™ Control Scheme
    • Maximum 140-µA Operating Quiescent Current
    • Reset Output-Pin (Active Low, Open-Drain)
  • One High-VIN Low-Dropout (LDO) Voltage Regulator
    • Input Range of 3 V to 36 V
    • 280-mA Current Capability With Typical 35-µA Quiescent Current in No-Load Condition
    • Low-Dropout Voltage of 300 mV at
      IO = 200 mA (Typical)
  • Overcurrent Protection for Both Regulators
  • Overtemperature Protection
  • 14-Pin HTSSOP Package With PowerPAD™ Integrated Circuit Package

The TPS65321A-Q1 device is a combination of a high-VIN DC-DC step-down converter, referred to as the buck regulator, with an adjustable switch-mode frequency from 100-kHz to 2.5-MHz, and a high-VIN 280-mA low-dropout (LDO) regulator. The input range is 3.6 V to 36 V for the buck regulator, and 3 V to
36 V for the LDO regulator. The buck regulator has an integrated high-side MOSFET with an active-low, open-drain power-good output-pin (nRST). The LDO regulator features a low-input supply current of 45-µA typical in no-load, also has an integrated MOSFET. Low-voltage tracking feature enables TPS65321A-Q1 to track the input supply during cold-crank conditions.

The buck regulator provides a flexible design to fit system needs. The external loop compensation circuit 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 maximum 140 µA.

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

The TPS65321A-Q1 device is a combination of a high-VIN DC-DC step-down converter, referred to as the buck regulator, with an adjustable switch-mode frequency from 100-kHz to 2.5-MHz, and a high-VIN 280-mA low-dropout (LDO) regulator. The input range is 3.6 V to 36 V for the buck regulator, and 3 V to
36 V for the LDO regulator. The buck regulator has an integrated high-side MOSFET with an active-low, open-drain power-good output-pin (nRST). The LDO regulator features a low-input supply current of 45-µA typical in no-load, also has an integrated MOSFET. Low-voltage tracking feature enables TPS65321A-Q1 to track the input supply during cold-crank conditions.

The buck regulator provides a flexible design to fit system needs. The external loop compensation circuit 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 maximum 140 µA.

The device has built-in protection features such as soft start, current-limit, thermal sensing and shutdown due to excessive power dissipation. Furthermore, the device has an internal undervoltage-lockout (UVLO) function that turns off the device when the supply voltage is too low.
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类型 标题 下载最新的英语版本 日期
* 数据表 TPS65321A-Q1 36-V Step-Down Converter With Eco-mode™ and LDO Regulator 数据表 PDF | HTML 2017年 11月 29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 Interfacing TPS57xxx-Q1 and TPS65320-Q1 Family Devices With Low Impendence Exter 2015年 12月 8日
应用手册 TPS65321-Q1 Design Checklist 2015年 11月 23日
EVM 用户指南 TPS65321EVM (HVL125A) User's Guide (Rev. A) 2015年 11月 2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

TPS65321EVM — 具有 EcoMode™ 和 LDO 稳压器的 36V 降压转换器评估模块

米6体育平台手机版_好二三四 (TI) TPS65321EVM 评估模块 (EVM) 能帮助设计人员评估 TPS65321 开关模式电源 – 多路输出电压稳压器的功能和性能。

用户指南: PDF
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仿真模型

TPS65321-Q1 PSpice Transient Model (Rev. A)

SLVMAL8A.ZIP (150 KB) - PSpice Model
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参考设计

TIDA-00677 — 基于降压 + 线性 LED 驱动器系统的 CISPR25 汽车尾灯参考设计

TIDA-00677 使用由上游降压转换器 (TPS65321-Q1) 供电的 TPS92630-Q1 线性 LED 驱动器展示了汽车 LED 尾灯应用（尾灯/制动灯、转向灯和倒车灯），该转换器由汽车电池电压通过智能电池反向二极管直接供电。该设计还根据 CISPR25 和 ISO 7637-2 经过了 EMI/EMC 辐射和脉冲测试。可在用户指南中找到有关潜在成本节约和高效率（功率耗散和系统热性能）的更多信息。有关由升压转换器驱动的类似设计，请参阅 TIDA-00678。有关通过汽车电池直接驱动的类似设计，请参阅 TIDA-00679。
设计指南: PDF
原理图: PDF
封装 引脚 CAD 符号、封装和 3D 模型
HTSSOP (PWP) 14 Ultra Librarian
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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

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