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TPS546B25W

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具有 PMBus 单相 FCCM 工作模式的 4V 至 18V 输入、25A 同步降压转换器

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TPS546B25W

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产品详情

Rating Catalog Topology Buck Iout (max) (A) 50 Vin (max) (V) 18 Vin (min) (V) 4 Vout (max) (V) 5.5 Vout (min) (V) 0.4 Features Adaptive/Dynamic Voltage Scaling, Adjustable current limit, Differential Remote Sense, Enable, Extended security, Forced PWM, Over Current Protection, PMBUS, Phase Interleaving, Power good, Pre-Bias Start-Up, Soft Start Adjustable, Synchronous Rectification, UVLO adjustable, Voltage Margining Control mode D-CAP4 Switching frequency (min) (kHz) 400 Switching frequency (max) (kHz) 2000 Operating temperature range (°C) -40 to 125 Iq (typ) (µA) 7500 Duty cycle (max) (%) 85 Type Converter
Rating Catalog Topology Buck Iout (max) (A) 50 Vin (max) (V) 18 Vin (min) (V) 4 Vout (max) (V) 5.5 Vout (min) (V) 0.4 Features Adaptive/Dynamic Voltage Scaling, Adjustable current limit, Differential Remote Sense, Enable, Extended security, Forced PWM, Over Current Protection, PMBUS, Phase Interleaving, Power good, Pre-Bias Start-Up, Soft Start Adjustable, Synchronous Rectification, UVLO adjustable, Voltage Margining Control mode D-CAP4 Switching frequency (min) (kHz) 400 Switching frequency (max) (kHz) 2000 Operating temperature range (°C) -40 to 125 Iq (typ) (µA) 7500 Duty cycle (max) (%) 85 Type Converter
WQFN-FCRLF (RXX) 37 30 mm² 6 x 5
  • 2.7V to 18V input voltage with external bias
  • 4V to 18V input voltage without external bias
  • 0.4V to 5.5V output voltage
  • Supports 25A single-phase or 2 ×, 3 ×, or 4 × stacked configurations
  • Rdson_HS = 2.6mΩ, Rdson_LS = 1mΩ
  • 400kHz to 2MHz operating frequency (four discrete settings through pin-strap, additional settings through PMBus)
  • PMBus programmable
    • Revision 1.5 compliant with PASSKEY security feature
    • Input voltage, output voltage, output current, temperature telemetry
    • Programmable overcurrent, overvoltage, undervoltage, overtemperature protections
    • Includes single command write function in stacked configuration
    • Extended write protection feature
    • Non-volatile memory to store configuration settings
  • Two methods for programming the output voltage
    • Internal resistor divider (discrete settings) with boot-up voltage selected by pin-strapping
    • External resistor divider (continuous settings) with boot-up voltage selected by VBOOT
  • Precision voltage reference and differential remote sense for high output accuracy
    • ± 0.5% DAC accuracy from 0°C to 85°C junction
    • ± 0.85% VOUT tolerance from –40°C to 125°C junction
  • Selectable FCCM/DCM in single phase only
  • Start-up without PMBus communication through pin-strapping
  • Safe start-up into prebiased output
  • 0.5ms to 16ms programmable soft-start time
  • D-CAP4 control topology with fast transient response, supporting all ceramic output capacitors
  • Programmable internal loop compensation
  • Selectable cycle-by-cycle valley current limit
  • Open-drain power-good output
  • 2.7V to 18V input voltage with external bias
  • 4V to 18V input voltage without external bias
  • 0.4V to 5.5V output voltage
  • Supports 25A single-phase or 2 ×, 3 ×, or 4 × stacked configurations
  • Rdson_HS = 2.6mΩ, Rdson_LS = 1mΩ
  • 400kHz to 2MHz operating frequency (four discrete settings through pin-strap, additional settings through PMBus)
  • PMBus programmable
    • Revision 1.5 compliant with PASSKEY security feature
    • Input voltage, output voltage, output current, temperature telemetry
    • Programmable overcurrent, overvoltage, undervoltage, overtemperature protections
    • Includes single command write function in stacked configuration
    • Extended write protection feature
    • Non-volatile memory to store configuration settings
  • Two methods for programming the output voltage
    • Internal resistor divider (discrete settings) with boot-up voltage selected by pin-strapping
    • External resistor divider (continuous settings) with boot-up voltage selected by VBOOT
  • Precision voltage reference and differential remote sense for high output accuracy
    • ± 0.5% DAC accuracy from 0°C to 85°C junction
    • ± 0.85% VOUT tolerance from –40°C to 125°C junction
  • Selectable FCCM/DCM in single phase only
  • Start-up without PMBus communication through pin-strapping
  • Safe start-up into prebiased output
  • 0.5ms to 16ms programmable soft-start time
  • D-CAP4 control topology with fast transient response, supporting all ceramic output capacitors
  • Programmable internal loop compensation
  • Selectable cycle-by-cycle valley current limit
  • Open-drain power-good output

The TPS546B25W device is a highly-integrated buck converter with D-CAP4 control topology for fast transient response. All programmable parameters can be configured by the PMBus interface and stored in NVM as the new default values to minimize the external component count. Pin-strap options allow for configuration as primary or secondary, stack position and stack number, DCM (single phase only) or FCCM, overcurrent limit, fault response, internal or external feedback resistor, output voltage selection or range, switching frequency, and compensation.

The PMBus interface with 1MHz clock support gives a convenient, standardized, digital interface for configuration as well as telemetry of key parameters including output voltage, output current, and internal die temperature. Response to fault conditions can be set to restart, latch off, or ignore, depending on system requirements. Two, three, and four TPS546B25W devices can be interconnected to provide up to 100A on a single output.

The TPS546B25W has an option to overdrive the internal 4.5V LDO with an external 5V supply through the VDRV and VCC pins to improve efficiency, reduce power dissipation, and enable start-up with a lower input voltage.

The TPS546B25W is a lead-free device and is RoHS compliant without exemption.

The TPS546B25W device is a highly-integrated buck converter with D-CAP4 control topology for fast transient response. All programmable parameters can be configured by the PMBus interface and stored in NVM as the new default values to minimize the external component count. Pin-strap options allow for configuration as primary or secondary, stack position and stack number, DCM (single phase only) or FCCM, overcurrent limit, fault response, internal or external feedback resistor, output voltage selection or range, switching frequency, and compensation.

The PMBus interface with 1MHz clock support gives a convenient, standardized, digital interface for configuration as well as telemetry of key parameters including output voltage, output current, and internal die temperature. Response to fault conditions can be set to restart, latch off, or ignore, depending on system requirements. Two, three, and four TPS546B25W devices can be interconnected to provide up to 100A on a single output.

The TPS546B25W has an option to overdrive the internal 4.5V LDO with an external 5V supply through the VDRV and VCC pins to improve efficiency, reduce power dissipation, and enable start-up with a lower input voltage.

The TPS546B25W is a lead-free device and is RoHS compliant without exemption.
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* 数据表 TPS546B25W 4V to 18V Input, 25A, Synchronous Buck Converter With PMBus, Telemetry, and Additional Addresses for Single-Phase FCCM Operation 数据表 PDF | HTML 2025年 7月 16日

设计和开发

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评估板

TPS546E25EVM-1PH — TPS546E25 单相评估模块

TPS546E25 评估模块 (EVM) 是一款采用 TPS546E25 器件的单相降压设计。该 EVM 针对 12V 标称电压总线而设计，可在高达 50A 负载电流下产生 1.2V 的稳压输出。TPS546E25EVM-1PH 旨在演示 TPS546E25 在单相低输出电压应用中的运行情况，同时提供许多测试点来评估器件的性能。

用户指南: PDF | HTML
英语版 (Rev.A): PDF | HTML
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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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