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TPS546C20A

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具有 PMBus 和引脚束带功能的 4.5V 至 18V 可堆叠 35A 同步 SWIFT™ 降压转换器

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TPS546C20A

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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, Over Current Protection, Overcurrent protection, PMBus, Phase Interleaving, Power good, 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 Sector Test & measurement
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, Over Current Protection, Overcurrent protection, PMBus, Phase Interleaving, Power good, 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 Sector Test & measurement
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
  • 2 PMBus Addresses (Master 36d/Slave 37d)
  • Selectable Boot-up Vout and Soft Start Values via Pin-Strapping
  • 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 TPS546C20A 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
  • 2 PMBus Addresses (Master 36d/Slave 37d)
  • Selectable Boot-up Vout and Soft Start Values via Pin-Strapping
  • 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 TPS546C20A With the WEBENCH® Power Designer

The TPS546C20A 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 TPS546C20A 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 TPS546C20A 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 TPS546C20A 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 TPS546C20A 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 Programming the NVM of PMBus Buck Converters to Support Mass-Production Needs (Rev. B) 2019-5-13
技术文章 Powering FPGAs - What to consider with Xilinx UltraScale+ FPGAs PDF | HTML 2018-1-29
应用手册 Analysis and Design of Input Filter for DC-DC Circuit 2017-11-27
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

TPS546C20AEVM1-746 — TPS546C20A 35A PMBus 可堆叠同步降压转换器评估模块

TPS546C20AEVM1-PWR746 评估模块（EVM）采用了 TPS546C20A 器件。TPS546C20A 是一款采用电压模式、具有集成 MOSFET 的 35A 同步降压转换器。EVM 上包含两个独立的转换器，这两个转换器均可通过 12V 输入总线在高达 35A 的电流下提供 0.9V 输出。
用户指南: PDF
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评估板

TPS546C20AEVM2-746 — 具有 PMBUS 的 TPS546C20A 双相评估模块

TPS546C20AEVM2-PWR746 评估模块 (EVM) 采用两个 TPS546C20A 器件。TPS546C20A 是一款采用电压模式、具有集成 MOSFET 的 35A 同步降压转换器。EVM 上的两个相位转换器均可通过 12V 输入总线提供 0.9V 输出电压和高达 70A 输出电流。
用户指南: PDF | HTML
支持的产品和硬件
有库存
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仿真模型

TPS546C20 PSpice Transient Model

SLUM530.ZIP (265 KB) - PSpice 模型
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仿真模型

TPS546C20A SIMPLIS Transient Model

SLUM711.ZIP (1330 KB) - SIMPLIS 模型
支持的产品和硬件
计算工具

SLURB05 — TPS546C20A and TPS546C23 Excel Calculator and Layout Checklist

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参考设计

PMP20071 — 参考设计: 8.5V-13.2V 至 1.2V 50A 直流/直流转换器

通过采用两个相同器件，TPS546C20A 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。PMP20071 展示了一种高电流两相应用。测试报告示出了两个功率级之间的损耗共享、输出纹波减少和由于两个相位而改善的动态响应。
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
适用于评估类项目的 TI 标准条款与条件。

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