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TPS54528

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具有 Eco-Mode™ 的 4.5V 至 18V 输入，5A 同步降压转换器

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TPS54528

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产品详情

Rating Catalog Topology Buck Iout (max) (A) 5 Vin (max) (V) 18 Vin (min) (V) 4.5 Vout (max) (V) 6 Vout (min) (V) 0.76 Features Enable, Light Load Efficiency, Soft Start Adjustable, Synchronous Rectification Control mode D-CAP2 Operating temperature range (°C) -40 to 85 Iq (typ) (A) 0.0009 Duty cycle (max) (%) 85
Rating Catalog Topology Buck Iout (max) (A) 5 Vin (max) (V) 18 Vin (min) (V) 4.5 Vout (max) (V) 6 Vout (min) (V) 0.76 Features Enable, Light Load Efficiency, Soft Start Adjustable, Synchronous Rectification Control mode D-CAP2 Operating temperature range (°C) -40 to 85 Iq (typ) (A) 0.0009 Duty cycle (max) (%) 85
HSOIC (DDA) 8 29.4 mm² (4.9 mm × 6 mm)
  • D-CAP2 Mode Enables Fast Transient Response
  • Low Output Ripple and Allows Ceramic Output Capacitor
  • Wide VIN Input Voltage Range: 4.5 V to 18 V
  • Output Voltage Range: 0.76 V to 6 V
  • Highly Efficient Integrated FETs Optimized
    for Lower Duty Cycle Applications
    – 65 mΩ (High Side) and 36 mΩ (Low Side)
  • High Efficiency, less than 10 µA at shutdown
  • High Initial Bandgap Reference Accuracy
  • Adjustable Soft Start
  • Pre-Biased Soft Start
  • 650-kHz Switching Frequency (fSW)
  • Cycle By Cycle Over Current Limit
  • Auto-Skip Eco-mode for High Efficiency at Light
    Load
  • D-CAP2 Mode Enables Fast Transient Response
  • Low Output Ripple and Allows Ceramic Output Capacitor
  • Wide VIN Input Voltage Range: 4.5 V to 18 V
  • Output Voltage Range: 0.76 V to 6 V
  • Highly Efficient Integrated FETs Optimized
    for Lower Duty Cycle Applications
    – 65 mΩ (High Side) and 36 mΩ (Low Side)
  • High Efficiency, less than 10 µA at shutdown
  • High Initial Bandgap Reference Accuracy
  • Adjustable Soft Start
  • Pre-Biased Soft Start
  • 650-kHz Switching Frequency (fSW)
  • Cycle By Cycle Over Current Limit
  • Auto-Skip Eco-mode for High Efficiency at Light
    Load

The TPS54528 is an adaptive on-time D-CAP2 mode synchronous buck converter. The TPS54528 enables system designers to complete the suite of various end-equipment power bus regulators with a cost effective, low component count, low standby current solution. The main control loop for the TPS54528 uses the D-CAP2 mode control that provides a fast transient response with no external compensation components. The adaptive on-time control supports seamless transition between PWM mode at higher load conditions and Eco-mode™ operation at light loads. Eco-mode™ allows the TPS54528 to maintain high efficiency during lighter load conditions. The TPS54528 also has a proprietary circuit that enables the device to adopt to both low equivalent series resistance (ESR) output capacitors, such as POSCAP or SP-CAP, and ultra-low ESR ceramic capacitors. The device operates from 4.5-V to 18-V VIN input. The output voltage can be programmed between 0.76 V and 6 V. The device also features an adjustable soft start time. The TPS54528 is available in the 8-terminal DDA package, and designed to operate from –40°C to 85°C.

The TPS54528 is an adaptive on-time D-CAP2 mode synchronous buck converter. The TPS54528 enables system designers to complete the suite of various end-equipment power bus regulators with a cost effective, low component count, low standby current solution. The main control loop for the TPS54528 uses the D-CAP2 mode control that provides a fast transient response with no external compensation components. The adaptive on-time control supports seamless transition between PWM mode at higher load conditions and Eco-mode™ operation at light loads. Eco-mode™ allows the TPS54528 to maintain high efficiency during lighter load conditions. The TPS54528 also has a proprietary circuit that enables the device to adopt to both low equivalent series resistance (ESR) output capacitors, such as POSCAP or SP-CAP, and ultra-low ESR ceramic capacitors. The device operates from 4.5-V to 18-V VIN input. The output voltage can be programmed between 0.76 V and 6 V. The device also features an adjustable soft start time. The TPS54528 is available in the 8-terminal DDA package, and designed to operate from –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 具有 Eco-mode(tm) 的 4.5V 至 18V 输入、5A 同步降压转换器 数据表 (Rev. C) 2014-2-24
选择指南 电源管理指南 2018 2018-7-31
应用手册 Optimize Output Filter on D-CAP2 for Stability Improvement 2017-6-13
应用手册 TPS54X28 应用指导 2015-9-2
应用手册 基于带有纹波注入谷底检测定导通时间频域分析的D-CAP2™频率响应模型 英语版 2015-9-2

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评估板

TPS54528EVM-052 — 用于 TPS54528 同步降压转换器（具有 D-CAP2 模式和自动跳过）的评估模块

TPS54528EVM-052 评估模块是一块完全组装且经过测试的电路板，用于评估 TPS54528 同步降压 DC-DC 转换器。该 TPS54528EVM-052 由 4.5V 至 18V 电源供电，在电流为 5A 时提供 1.05V 的输出电压。TPS54528EVM-052 的主要控制环路采用 D-CAP2 模式，无需外部组件即可提供非常快速的瞬态响应。集成的“自动跳过” Eco 模式功能可在轻载时提供更高的效率。
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仿真模型

TPS54528 PSpice Transient Model

SLVMA25.ZIP (113 KB) - PSpice 模型
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