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DC/DC 轉換器

TPS546C20A

現行

具 PMBus 和針腳設置的 4.5-V 至 18-V、可堆疊 35-A 同步 SWIFT™ 降壓轉換器

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產品規格表

TPS546C20A

現行
產品規格表 立即訂購

產品詳細資料

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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技術文件

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重要文件 類型 標題 格式選項 下載最新的英文版本 日期
* 資料表 TPS546C20A 4.5-V to 18-V, 35-A 2× Stackable Synchronous Buck Converters With PMBus Supporting Telemetry datasheet (Rev. C) PDF | HTML 2018/6/11
應用說明 Programming the NVM of PMBus Buck Converters to Support Mass-Production Needs (Rev. B) 2019/5/13
技術文章 Powering FPGAs - What to consider with Xilinx UltraScale+ FPGAs PDF | HTML 2018/1/29
應用說明 Analysis and Design of Input Filter for DC-DC Circuit 2017/11/27
應用說明 Method of Graphing Safe Operating Area (SOA) Curves in DC-DC Converter 2016/3/30
類比設計期刊 MOSFET power losses and how they affect power-supply efficiency 2016/1/26

設計與開發

如需其他條款或必要資源，請按一下下方的任何標題以檢視詳細頁面 (如有)。

開發板

TPS546C20AEVM1-746 — TPS546C20A 35A PMBus 可堆疊同步降壓轉換器評估模組

TPS546C20AEVM1-PWR746 評估模組 (EVM) 使用 TPS546C20A。TPS546C20A 是具整合 MOSFET 的電壓模式、35A 同步降壓轉換器。EVM 隨附兩個分離式轉換器，兩者皆可從 12V 輸入匯流排提供最高 35A 的 0.9V 輸出。
使用指南: PDF
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開發板

TPS546C20AEVM2-746 — 具有 PMBUS 的 TPS546C20A 雙相評估模組

TPS546C20AEVM2-PWR746 評估模組 (EVM) 使用兩個 TPS546C20A 裝置。TPS546C20A 是具整合 MOSFET 的電壓模式、35A 同步降壓轉換器。EVM 隨附兩個相位轉換器，可從 12V 輸入匯流排提供最高 70A 的 0.9V 輸出。
使用指南: PDF | HTML
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模擬型號

TPS546C20 PSpice Transient Model

SLUM530.ZIP (265 KB) - PSpice 模型
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模擬型號

TPS546C20A SIMPLIS Transient Model

SLUM711.ZIP (1330 KB) - SIMPLIS 模型
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計算工具

SLURB05 — TPS546C20A and TPS546C23 Excel Calculator and Layout Checklist

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參考設計

PMP20071 — 參考設計：8.5V-13.2V 轉 1.2V 50A DC/DC 轉換器

TPS546C20A 為高電流 DC/DC 應用的控制與同步功率級提供單一 IC，並可使用兩個相同零件將電流能力加倍。  多相也允許在指定切換頻率下進行輸出漣波抵銷和有效的高頻寬控制。PMP20071 顯示高電流雙相應用。測試報告顯示兩個功率級之間的損耗分載、輸出漣波減少，以及因兩個相位而改善的動態反應。
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LQFN-CLIP (RVF) 40 Ultra Librarian
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