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TPS546C23

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支持 PMBus 和遥测功能的 4.5V 至 18V、可堆叠 35A 同步 SWIFT™ 降压转换器

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TPS546C23

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产品详情

Rating Catalog Topology Buck Iout (max) (A) 35 Vin (max) (V) 18 Vin (min) (V) 4.5 Vout (max) (V) 5.5 Vout (min) (V) 0.35 Features Adaptive/Dynamic Voltage Scaling, Adjustable current limit, Adjustable soft start, Differential Remote Sense, Enable, Forced PWM, Frequency synchronization, Overcurrent protection, PMBus, Phase interleaving, Power good, Prebias startup, Synchronous rectification, Telemetry, UVLO adjustable, Voltage Margining Control mode Voltage mode Operating temperature range (°C) -40 to 125 Iq (typ) (A) 0.0077 Duty cycle (max) (%) 100
Rating Catalog Topology Buck Iout (max) (A) 35 Vin (max) (V) 18 Vin (min) (V) 4.5 Vout (max) (V) 5.5 Vout (min) (V) 0.35 Features Adaptive/Dynamic Voltage Scaling, Adjustable current limit, Adjustable soft start, Differential Remote Sense, Enable, Forced PWM, Frequency synchronization, Overcurrent protection, PMBus, Phase interleaving, Power good, Prebias startup, Synchronous rectification, Telemetry, UVLO adjustable, Voltage Margining Control mode Voltage mode Operating temperature range (°C) -40 to 125 Iq (typ) (A) 0.0077 Duty cycle (max) (%) 100
LQFN-CLIP (RVF) 40 35 mm² (7 mm × 5 mm)
  • PMBus™ 1.3 Compliant Converters: 35 A
  • 2-Device Stackable for up to 70 A With Current Sharing
  • Input Voltage Range: 4.5 V to 18 V
  • Output Voltage Range: 0.35 V to 5.5 V
  • Integrated 3.2-mΩ and 1.4-mΩ Stacked NexFET™ Power Stage
  • 350-mV to 1650-mV Reference for Adaptive Voltage Scaling (AVS) Function and Margining through PMBus
  • 0.5% Reference Accuracy at 600 mV and Above
  • Lossless Low-Side MOSFET Current Sensing
  • Voltage Mode Control With Input Feed-Forward
  • Differential Remote Sensing
  • Monotonic Start-Up into Pre-Biased Output
  • Output Voltage and Output Current Reporting
  • Internal Die Temperature Monitoring
  • 64 Programmable PMBus Addresses via ADDR0 and ADDR1 Pins
  • Programmable via the PMBus Interface:
    • OCP, UVLO, Soft-Start, PG, OV, UV, OT Levels, Fault Responses
    • Turnon and Turnoff Delays
  • Thermal Shutdown
  • Pin Strapping for Switching Frequency: 200 kHz to 1 MHz
  • Frequency Synchronization to an External Clock or Output Clock to Sync Out
  • Create a Custom Design Using the TPS546C23 With the WEBENCH® Power Designer
  • PMBus™ 1.3 Compliant Converters: 35 A
  • 2-Device Stackable for up to 70 A With Current Sharing
  • Input Voltage Range: 4.5 V to 18 V
  • Output Voltage Range: 0.35 V to 5.5 V
  • Integrated 3.2-mΩ and 1.4-mΩ Stacked NexFET™ Power Stage
  • 350-mV to 1650-mV Reference for Adaptive Voltage Scaling (AVS) Function and Margining through PMBus
  • 0.5% Reference Accuracy at 600 mV and Above
  • Lossless Low-Side MOSFET Current Sensing
  • Voltage Mode Control With Input Feed-Forward
  • Differential Remote Sensing
  • Monotonic Start-Up into Pre-Biased Output
  • Output Voltage and Output Current Reporting
  • Internal Die Temperature Monitoring
  • 64 Programmable PMBus Addresses via ADDR0 and ADDR1 Pins
  • Programmable via the PMBus Interface:
    • OCP, UVLO, Soft-Start, PG, OV, UV, OT Levels, Fault Responses
    • Turnon and Turnoff Delays
  • Thermal Shutdown
  • Pin Strapping for Switching Frequency: 200 kHz to 1 MHz
  • Frequency Synchronization to an External Clock or Output Clock to Sync Out
  • Create a Custom Design Using the TPS546C23 With the WEBENCH® Power Designer

The TPS546C23 devices are PMBus 1.3 Compliant, non-isolated DC/DC converters with integrated FETs, capable of high-frequency operation and 35-A current output from a 7-mm × 5-mm package. Two TPS546C23 devices can be paralleled together to provide up to 70-A load. Current sensing is realized by sampling a small portion of the power stage current and independent on the device temperature. High-frequency, low-loss switching, provided by an integrated NexFET power stage and optimized drivers, allows for very high-density power solutions. The PMBus interface enables the AVS functions through VOUT_COMMAND, flexible converter configuration, as well as key parameters monitoring including output voltage, current, and internal die temperature. Response to fault conditions can be set to either restart, latch-off or ignore depending on system requirements.

The TPS546C23 devices are PMBus 1.3 Compliant, non-isolated DC/DC converters with integrated FETs, capable of high-frequency operation and 35-A current output from a 7-mm × 5-mm package. Two TPS546C23 devices can be paralleled together to provide up to 70-A load. Current sensing is realized by sampling a small portion of the power stage current and independent on the device temperature. High-frequency, low-loss switching, provided by an integrated NexFET power stage and optimized drivers, allows for very high-density power solutions. The PMBus interface enables the AVS functions through VOUT_COMMAND, flexible converter configuration, as well as key parameters monitoring including output voltage, current, and internal die temperature. Response to fault conditions can be set to either restart, latch-off or ignore depending on system requirements.
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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 TPS546C23 4.5-V to 18-V, 35-A 2× Stackable Synchronous Buck Converters With PMBus Supporting Telemetry 数据表 (Rev. C) PDF | HTML 2018-6-11
应用手册 电源测试中低频纹波及大小波问题的分析及解决方案 2024-12-17
选择指南 Buck Converter Quick Reference Guide (Rev. B) 2021-4-8
技术文章 3 big benefits of small cells PDF | HTML 2020-5-26
白皮书 Small Cells, Big Impact: Designing Power Soutions for 5G Applications 2019-6-26
应用手册 Programming the NVM of PMBus Buck Converters to Support Mass-Production Needs (Rev. B) 2019-5-13
应用手册 如何实现比基准更低的输出电压 2018-4-8
应用手册 Analysis and Design of Input Filter for DC-DC Circuit 2017-11-27
技术文章 Getting started with PMBus PDF | HTML 2017-9-14
技术文章 Save PCB space and overcome point-of-load design complexity with PMBus modules PDF | HTML 2017-3-27
技术文章 Stack current with PowerStack packages for higher power POL PDF | HTML 2016-12-7
更多文献资料 TPS546C23 Quick Reference Guide 2016-11-17
应用手册 Method of Graphing Safe Operating Area (SOA) Curves in DC-DC Converter 2016-3-30
模拟设计期刊 MOSFET power losses and how they affect power-supply efficiency 2016-1-26

设计与开发

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评估板

TPS546C23EVM1-746 — TPS546C23 35A PMBus 可堆叠同步降压转换器评估模块

TPS546C23EVM1-746 评估模块具有两个独立的降压转换器，可利用标称 12V 总线生成两路 0.9V 稳压输出，且每路输出的负载电流高达 35A。TPS546C23EVM1-746 旨在演示在典型的单相低输出电压应用中，TPS546C23 具有带遥测功能的 PMBus 接口。

用户指南: PDF
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评估板

TPS546C23EVM2-746 — 具有 PMBUS 的 TPS546C23 堆叠式双相 70A 评估模块

TPS546C23EVM2-746 评估模块将两个 35A TPS546C23 降压转换器组合到一种可堆叠配置中，通过标称 12V 输入总线提供 70A 的连续输出电流和 1.2V 稳压输出。此评估模块的 PMBus 接口具有遥测功能。

用户指南: PDF | HTML
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仿真模型

TPS546C23 IBIS Model

SLUM706.ZIP (53 KB) - IBIS 模型
支持的产品和硬件
仿真模型

TPS546C23 PSpice Transient Model

SLUM531.ZIP (289 KB) - PSpice 模型
支持的产品和硬件
计算工具

SLURB05 — TPS546C20A and TPS546C23 Excel Calculator and Layout Checklist

支持的产品和硬件
参考设计

PMP20490 — 采用堆叠式 TPS546C20A PMBus 直流/直流转换器的高密度 12Vin、1.2Vout、60A POL 参考设计

通过采用两个相同器件，TPS546C23 可为高电流直流/直流应用提供适用于控制和同步功率级的单个 IC，并允许电流容量加倍。  多相还有助于消除输出纹波以及在给定开关频率下进行有效的更高带宽控制。PMP20490 展示了一款带有电感器（置于控制 IC 顶部以实现更小封装）和两个板载动态负载的高电流两相应用。测试报告显示了采用两个电感器源时的性能和效率。
支持的产品和硬件
封装 引脚 CAD 符号、封装和 3D 模型
LQFN-CLIP (RVF) 40 Ultra Librarian
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