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TPS54824

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采用 HotRod™ QFN 封装的 4.5V 至 17V、8A 同步 SWIFT™ 降压转换器

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TPS54824

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产品详情

Rating Catalog Topology Buck Iout (max) (A) 8 Vin (max) (V) 17 Vin (min) (V) 4.5 Vout (max) (V) 12 Vout (min) (V) 0.6 Features Enable, Frequency synchronization, Power good, Pre-Bias Start-Up, Soft Start Adjustable, Synchronous Rectification, Tracking EMI features Low parasitic Hotrod packaging Control mode current mode Operating temperature range (°C) -40 to 150 Iq (typ) (A) 0.00058 Duty cycle (max) (%) 98
Rating Catalog Topology Buck Iout (max) (A) 8 Vin (max) (V) 17 Vin (min) (V) 4.5 Vout (max) (V) 12 Vout (min) (V) 0.6 Features Enable, Frequency synchronization, Power good, Pre-Bias Start-Up, Soft Start Adjustable, Synchronous Rectification, Tracking EMI features Low parasitic Hotrod packaging Control mode current mode Operating temperature range (°C) -40 to 150 Iq (typ) (A) 0.00058 Duty cycle (max) (%) 98
VQFN-HR (RNV) 18 12.25 mm² (3.5 mm × 3.5 mm)
  • Small 3.5-mm × 3.5-mm HotRod™ QFN package
  • Integrated 14.1-mΩ and 6.1-mΩ MOSFETs
  • Peak current mode control with fast transient response
  • 200-kHz to 1.6-MHz fixed switching frequency
  • Synchronizes to external clock
  • 0.6-V voltage reference ±0.85% over temperature
  • 0.6-V to 12-V output voltage range
  • Hiccup Current Limit
  • Safe start-up into pre-biased output voltage
  • Adjustable soft start and power sequencing
  • Adjustable input undervoltage lockout
  • 3-µA shutdown current
  • Power good output monitor for undervoltage and overvoltage
  • Output overvoltage protection
  • Non-latch thermal shutdown protection
  • –40°C to 150°C operating junction temperature
  • Small 3.5-mm × 3.5-mm HotRod™ QFN package
  • Integrated 14.1-mΩ and 6.1-mΩ MOSFETs
  • Peak current mode control with fast transient response
  • 200-kHz to 1.6-MHz fixed switching frequency
  • Synchronizes to external clock
  • 0.6-V voltage reference ±0.85% over temperature
  • 0.6-V to 12-V output voltage range
  • Hiccup Current Limit
  • Safe start-up into pre-biased output voltage
  • Adjustable soft start and power sequencing
  • Adjustable input undervoltage lockout
  • 3-µA shutdown current
  • Power good output monitor for undervoltage and overvoltage
  • Output overvoltage protection
  • Non-latch thermal shutdown protection
  • –40°C to 150°C operating junction temperature

The TPS54824 is a full-featured 17-V (19-V maximum), 8-A synchronous step-down DC/DC converter in a 3.5 mm × 3.5 mm HotRod™ QFN package.

The device is optimized for small solution size through high efficiency and integrating the high-side and low-side MOSFETs. Further space savings are achieved through peak current mode control, which reduces component count, and by selecting a high switching frequency, reducing the inductor footprint.

The peak current mode control simplifies the loop compensation and provides fast transient response. Cycle-by-cycle peak current limiting on the high-side and low-side sourcing current limit protects the device in overload situations. Hiccup limits MOSFET power dissipation if a short circuit or over loading fault persists.

A power good supervisor circuit monitors the regulator output. The PGOOD pin is an open-drain output and goes high impedance when the output voltage is in regulation. An internal deglitch time prevents the PGOOD pin from pulling low unless a fault has occurred.

A dedicated EN pin can be used to control the regulator on/off and adjust the input undervoltage lockout. The output voltage start-up ramp is controlled by the SS/TRK pin, which allows operation as either a standalone power supply or in tracking situations.

The TPS54824 is a full-featured 17-V (19-V maximum), 8-A synchronous step-down DC/DC converter in a 3.5 mm × 3.5 mm HotRod™ QFN package.

The device is optimized for small solution size through high efficiency and integrating the high-side and low-side MOSFETs. Further space savings are achieved through peak current mode control, which reduces component count, and by selecting a high switching frequency, reducing the inductor footprint.

The peak current mode control simplifies the loop compensation and provides fast transient response. Cycle-by-cycle peak current limiting on the high-side and low-side sourcing current limit protects the device in overload situations. Hiccup limits MOSFET power dissipation if a short circuit or over loading fault persists.

A power good supervisor circuit monitors the regulator output. The PGOOD pin is an open-drain output and goes high impedance when the output voltage is in regulation. An internal deglitch time prevents the PGOOD pin from pulling low unless a fault has occurred.

A dedicated EN pin can be used to control the regulator on/off and adjust the input undervoltage lockout. The output voltage start-up ramp is controlled by the SS/TRK pin, which allows operation as either a standalone power supply or in tracking situations.
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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 TPS54824 4.5-V to 17-V (19-V Maximum) Input, 8-A Synchronous SWIFT™ Step-Down Converter 数据表 (Rev. B) PDF | HTML 2019-10-17
应用手册 低纹波电源的峰值电流模式转换器次级滤波器设计 – 第 II 部 分：针对稳定性的混合检测网络设计 PDF | HTML 英语版 PDF | HTML 2024-2-28
应用手册 低纹波电源的峰值电流模式转换器次级滤波器设计 – 第 I 部 分：用于减少输出纹波的滤波器设计 PDF | HTML 英语版 PDF | HTML 2024-2-23
应用手册 直流/直流降压稳压器技术文档集锦 (Rev. A) PDF | HTML 英语版 (Rev.A) PDF | HTML 2022-12-2
应用手册 如何测试高精度的环路性能 2022-1-11
应用手册 PC 应用中 Tiger Lake 的非隔离式负载点解决方案 (Rev. B) PDF | HTML 英语版 (Rev.B) PDF | HTML 2021-8-12
应用手册 适用于数据中心应用中的硬件加速器的直流/直流转换器解决方案 (Rev. A) PDF | HTML 英语版 (Rev.A) PDF | HTML 2021-8-12
选择指南 Buck Converter Quick Reference Guide (Rev. B) 2021-4-8
应用手册 适用于实现 VR13.HC Vccin 规范的数据中心应用的负载点解决方案 (Rev. A) PDF | HTML 英语版 (Rev.A) PDF | HTML 2021-4-1
应用手册 Non-Isolated Point-of-Load Solutions for Elkhart Lake in Industrial PC App. (Rev. A) PDF | HTML 2020-5-21
应用手册 Understanding Flip Chip QFN (HotRod) and Standard QFN Performance Differences 2019-7-2
应用手册 Minimizing Output Ripple During Startup (Rev. A) 2019-5-20
应用手册 DC/DC Point-of-load Power Solutions for Wired Networking Switch Systems 2018-12-11
应用手册 Optimizing Layout of the TPS54824 HotRod™ Package for Thermal Performance 2018-11-16
应用手册 Solve Point-of-Load Power Design Challenges: Single Board Computer Applications 2018-8-24
应用手册 Create an Inverting Power Supply Using a Synchronous Step-Down Regulator (Rev. B) 2018-6-25
更多文献资料 Common Mistakes in DC/DC Converters and How to Fix Them 2018-2-14
白皮书 Measuring various types of low-frequency noise in DC/DC switching converters 2018-2-1
模拟设计期刊 Reducing noise on the output of a switching regulator 2018-1-4
应用手册 HotRod QFN Application Note 2014-4-9
应用手册 Ultra Small 5A, Adjustable Output Reference design using TPS54620 2010-5-21

设计与开发

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

TPS54824EVM-779 — TPS54824 同步降压转换器评估模块

TPS54824EVM-779 是一款 8A 同步转换器评估模块 (EVM)。  该 EVM 从额定 12V 输入生成 1.8V 输出电压。  输入电压范围为 4.5V 至 17V。该电路运行频率设置为 700kHz。
用户指南: PDF | HTML
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无货
仿真模型

TPS54824 PSpice Average Model (Rev. C)

SLVMBY0C.ZIP (57 KB) - PSpice 模型
支持的产品和硬件
仿真模型

TPS54824 PSpice Transient Model (Rev. B)

SLVMBU2B.ZIP (236 KB) - PSpice 模型
支持的产品和硬件
仿真模型

TPS54824 TINA-TI Average Reference Design (Rev. C)

SLVMBZ3C.TSC (153 KB) - TINA-TI 参考设计
支持的产品和硬件
仿真模型

TPS54824 TINA-TI Average Spice Model (Rev. C)

SLVMBZ4C.ZIP (9 KB) - TINA-TI Spice 模型
支持的产品和硬件
参考设计

TIDA-01466 — 适用于超声波前端的低电压、低噪声电源参考设计

该参考设计是一款经过优化的电源，专门用于为超声波成像系统接收 AFE IC 的八个 16 通道供电。该设计使用单芯片直流/直流转换器 + LDO 组合稳压器将 LDO 输入设置为恰好高于压降电压，同时充分利用 LDO PSRR，从而减少器件数，同时最大限度地提高效率。  此外，超低噪声 LDO 有助于实现可能的最高模数转换分辨率，从而实现更高的图像质量。该设计能够使开关频率与主时钟频率和系统时钟频率同步，从而帮助系统设计人员应用简单的滤波技术来消除接地回路上的电源开关噪声，或使用扩频时钟来降低 EMI。此外，该设计实现了电子保险丝器件，从而提供一种简单灵活的过流保护方式。
支持的产品和硬件
参考设计

TIDA-01510 — 可提高 DC/DC 转换器功率密度的双面布局参考设计

此参考设计展示了设计双面 DC/DC 布局的正确方法，以实现更高的电源密度。此设计指南重点介绍了常见错误以及如何避免这些错误，同时还给出了测试结果，这些结果表明在双面布局中正确使用 TPS54824 器件并不会对性能产生影响。如果 TPS54824 降压转换器的 8A 电流输出过大，此设计也可以使用引脚对引脚兼容的 4A 器件 TPS54424。
支持的产品和硬件
封装 引脚 CAD 符号、封装和 3D 模型
VQFN-HR (RNV) 18 Ultra Librarian
适用于评估类项目的 TI 标准条款与条件。

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