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TPS546C25

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4V 至 18V 輸入、35A、堆疊式 PMBus 同步降壓轉換器

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TPS546C25

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產品詳細資料

Rating Catalog Operating temperature range (°C) -40 to 125 Topology Buck Type Converter Iout (max) (A) 35 Vin (min) (V) 2.7 Vin (max) (V) 18 Switching frequency (min) (kHz) 400 Switching frequency (max) (kHz) 400, 1500, 2000 Features Adaptive/Dynamic Voltage Scaling, Adjustable current limit, Differential Remote Sense, Enable, Extended security, Forced PWM, Frequency synchronization, Over Current Protection, PMBus, Phase Interleaving, Power good, Pre-Bias Start-Up, Soft Start Adjustable, Synchronous Rectification, Telemetry, UVLO adjustable, Voltage Margining Control mode D-CAP4 Vout (min) (V) 0.4 Vout (max) (V) 5.5 Iq (typ) (µA) 7500 Duty cycle (max) (%) 85
Rating Catalog Operating temperature range (°C) -40 to 125 Topology Buck Type Converter Iout (max) (A) 35 Vin (min) (V) 2.7 Vin (max) (V) 18 Switching frequency (min) (kHz) 400 Switching frequency (max) (kHz) 400, 1500, 2000 Features Adaptive/Dynamic Voltage Scaling, Adjustable current limit, Differential Remote Sense, Enable, Extended security, Forced PWM, Frequency synchronization, Over Current Protection, PMBus, Phase Interleaving, Power good, Pre-Bias Start-Up, Soft Start Adjustable, Synchronous Rectification, Telemetry, UVLO adjustable, Voltage Margining Control mode D-CAP4 Vout (min) (V) 0.4 Vout (max) (V) 5.5 Iq (typ) (µA) 7500 Duty cycle (max) (%) 85
WQFN-FCRLF (VBD) 33 20 mm² 5 x 4
  • 4V to 18V input voltage without external bias
  • 2.7V to 18V input voltage with external bias
  • 0.4V to 5.5V output voltage
  • Supports 35A single-phase or 2 ×, 3 ×, or 4 × stacked configurations
  • Rdson_HS = 3.3mΩ, Rdson_LS = 1mΩ
  • 400kHz to 2MHz operating frequency (four discrete settings through pinstrap, additional settings through PMBus)
  • PMBus programmability
    • 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 field
  • Precision voltage reference and differential remote sense for high output accuracy
    • +/– 0.5% DAC accuracy from 0°C to 85°C junction
    • +/– 1% 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
  • Programmable soft-start time from 0.5ms to 16ms
  • Programmable soft-stop time from 0.5ms to 4ms
  • 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
  • 4V to 18V input voltage without external bias
  • 2.7V to 18V input voltage with external bias
  • 0.4V to 5.5V output voltage
  • Supports 35A single-phase or 2 ×, 3 ×, or 4 × stacked configurations
  • Rdson_HS = 3.3mΩ, Rdson_LS = 1mΩ
  • 400kHz to 2MHz operating frequency (four discrete settings through pinstrap, additional settings through PMBus)
  • PMBus programmability
    • 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 field
  • Precision voltage reference and differential remote sense for high output accuracy
    • +/– 0.5% DAC accuracy from 0°C to 85°C junction
    • +/– 1% 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
  • Programmable soft-start time from 0.5ms to 16ms
  • Programmable soft-stop time from 0.5ms to 4ms
  • 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 TPS546C25 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. Pinstrap 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 TPS546C25 devices can be interconnected to provide up to 140A on a single output.

The device has an option to overdrive the internal 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 TPS546C25 is a lead-free device and is RoHS compliant without exemption.

The TPS546C25 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. Pinstrap 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 TPS546C25 devices can be interconnected to provide up to 140A on a single output.

The device has an option to overdrive the internal 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 TPS546C25 is a lead-free device and is RoHS compliant without exemption.
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類型 標題 日期
* Data sheet TPS546C25 4V to 18V Input, 35A , 4 × Stackable, Synchronous Buck Converter With PMBus and Telemetry datasheet PDF | HTML 2024年 7月 12日
Application note Point-of-Load Designs in Data Center Applications for Intel Xeon Sapphire Rapids Scalable Processors (Rev. C) PDF | HTML 2024年 10月 9日
Application note TPS546E25 and TPS546C25 Advanced Product Errata PDF | HTML 2024年 7月 31日
EVM User's guide TPS546C25EVM-1PH 4V to 18V, 35A, Buck Converter with PMBus and Telemetry Evaluation Module User's Guide PDF | HTML 2024年 7月 3日

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開發板

TPS546C25EVM-1PH — 適用於單相降壓轉換器的 TPS546C25 評估模組

TPS546C25EVM-1PH 是使用 TPS546C25 裝置的單相降壓設計。TPS546C25EVM-1PH 專為額定 12V 匯流排而設計，在高達 35A 的負載電流下會產生經調節的 1.2V 輸出。TPS546C25EVM-1PH 的設計用途是展示 TPS546C25 在單相低輸出電壓應用中的運作情形，同時提供多個測試點以評估裝置性能。
使用指南: PDF | HTML
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開發板

USB-TO-GPIO2 — USB-TO-GPIO2 USB 介面轉接器評估模組

此 EVM 透過標準的 A 型到迷你 B 型 USB 電纜，充當主機 PC 和一個或多個目標裝置之間的介面轉接器或橋接器。USB 介面轉接器與主機 PC 之間的通訊透過 USB 進行，而 USB 介面轉接器與目標裝置之間的通訊則是透過內部積體電路 (I²C)、通用輸入和輸出 GPIO 或兩者。橋接器會轉換 USB 和 I²C/GPIO 之間的通訊交易。
使用指南: PDF | HTML
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設計工具

TPS546E25-DESIGN — TPS546E25 Design file

Design files for TPS546E25
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AC/DC 和 DC/DC 轉換器 (整合式 FET)
TPS546C25 — 4V 至 18V 輸入、35A、堆疊式 PMBus 同步降壓轉換器 TPS546E25 — 4V 至 18V 輸出、50A、堆疊式 PMBus 同步降壓轉換器
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