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TPS543021

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4.5V to 30V input, 3A, 400kHz synchronous buck converter

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TPS543021

预发布
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产品详情

Rating Catalog Topology Buck Iout (max) (A) 3 Vin (max) (V) 30 Vin (min) (V) 4.5 Vout (max) (V) 30 Vout (min) (V) 0.6 Features Enable, Light load efficiency, Pre-Bias Start-Up, Soft Start Fixed, Spread Spectrum, Synchronous Rectification, UVLO adjustable EMI features Spread Spectrum Control mode current mode Switching frequency (min) (kHz) 400 Switching frequency (max) (kHz) 400 Operating temperature range (°C) -40 to 150 Iq (typ) (µA) 45 Duty cycle (max) (%) 100 Type Converter
Rating Catalog Topology Buck Iout (max) (A) 3 Vin (max) (V) 30 Vin (min) (V) 4.5 Vout (max) (V) 30 Vout (min) (V) 0.6 Features Enable, Light load efficiency, Pre-Bias Start-Up, Soft Start Fixed, Spread Spectrum, Synchronous Rectification, UVLO adjustable EMI features Spread Spectrum Control mode current mode Switching frequency (min) (kHz) 400 Switching frequency (max) (kHz) 400 Operating temperature range (°C) -40 to 150 Iq (typ) (µA) 45 Duty cycle (max) (%) 100 Type Converter
SOT-5X3 (DRL) 6 2.56 mm² 1.6 x 1.6
  • Configured for a wide range of applications
    • 4.5V to 28V input voltage range
    • Up to 3A continuous output current
    • –40°C to 150°C junction temperature range
    • 70ns minimum switching on time
    • ±1% tolerance reference voltage (25°C)
    • Supports low drop out mode
    • Precision enable
  • High efficiency
    • Integrated 75mΩ and 35mΩ MOSFETs
    • Low 2µA shutdown, 28µA quiescent current
    • Pulse frequency modulation (PFM) for high light load efficiency
  • Ease of use
    • Peak current mode control with internal compensation
    • Fixed 400kHz switching frequency
    • Internal 5ms soft start
    • Frequency spread spectrum to reduce EMI
    • Overcurrent protection with hiccup mode
    • Non-latched protection for overtemperature protection (OTP), overcurrent protection (OCP), overvoltage protection (OVP), and undervoltage lockout (UVLO)
    • SOT-563 package
  • Create a custom design using the PTPS543021 with the WEBENCH Power Designer
  • Configured for a wide range of applications
    • 4.5V to 28V input voltage range
    • Up to 3A continuous output current
    • –40°C to 150°C junction temperature range
    • 70ns minimum switching on time
    • ±1% tolerance reference voltage (25°C)
    • Supports low drop out mode
    • Precision enable
  • High efficiency
    • Integrated 75mΩ and 35mΩ MOSFETs
    • Low 2µA shutdown, 28µA quiescent current
    • Pulse frequency modulation (PFM) for high light load efficiency
  • Ease of use
    • Peak current mode control with internal compensation
    • Fixed 400kHz switching frequency
    • Internal 5ms soft start
    • Frequency spread spectrum to reduce EMI
    • Overcurrent protection with hiccup mode
    • Non-latched protection for overtemperature protection (OTP), overcurrent protection (OCP), overvoltage protection (OVP), and undervoltage lockout (UVLO)
    • SOT-563 package
  • Create a custom design using the PTPS543021 with the WEBENCH Power Designer

The PTPS543021 is a 4.5V to 28V input voltage range, 3A synchronous buck converter. The device includes two integrated switching FETs, internal loop compensation and 5ms internal soft start to reduce component count.

By integrating the MOSFETs, the PTPS543021 achieves the high power density and offers a small footprint on the PCB. PTPS543021 has adjustable output by a different FB resistor configuration.

The PTPS543021 operates in PFM (pulse frequency modulation) mode for high light load efficiency and reduces the power loss. The device incorporates spread spectrum for Electromagnetic Interference (EMI) reduction.

Cycle-by-cycle current limit in high-side MOSFET protects the converter in an overload condition and is enhanced by a low-side MOSFET freewheeling current limit which prevents current runaway. Hiccup mode protection is triggered if the overcurrent condition has persisted for longer than the preset time.

The PTPS543021 is a 4.5V to 28V input voltage range, 3A synchronous buck converter. The device includes two integrated switching FETs, internal loop compensation and 5ms internal soft start to reduce component count.

By integrating the MOSFETs, the PTPS543021 achieves the high power density and offers a small footprint on the PCB. PTPS543021 has adjustable output by a different FB resistor configuration.

The PTPS543021 operates in PFM (pulse frequency modulation) mode for high light load efficiency and reduces the power loss. The device incorporates spread spectrum for Electromagnetic Interference (EMI) reduction.

Cycle-by-cycle current limit in high-side MOSFET protects the converter in an overload condition and is enhanced by a low-side MOSFET freewheeling current limit which prevents current runaway. Hiccup mode protection is triggered if the overcurrent condition has persisted for longer than the preset time.
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类型 标题 下载最新的英语版本 日期
* 数据表 PTPS543021 4.5V to 28V, 3A, EMI Friendly, Synchronous Step-Down Converter 数据表 PDF | HTML 2025年 7月 31日
EVM 用户指南 TPS543021 Step-Down Converter Evaluation Module User's Guide PDF | HTML 2025年 8月 4日
证书 TPS543021EVM EU Declaration of Conformity (DoC) 2025年 7月 17日

设计和开发

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评估板

TPS543021EVM — TPS543021 降压转换器评估模块

The TPS543021EVM evaluation module (EVM) helps designers evaluate the operation and performance of the easy-to-use, 3A synchronous step-down converter TPS543021. The TPS543021EVM operates from 6V to 28V input, 24V nominal and provides a 5V output at 3A. The switching frequency is 400kHz. The EVM (...)

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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

支持和培训

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