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DC/DC 轉換器

TPS546B24A

現行

具有針腳設置和 PMBus 的 2.95-V 至 18-V、可堆疊 20-A 同步 SWIFT™ 降壓轉換器

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產品規格表

TPS546B24A

現行
產品規格表 立即訂購

產品詳細資料

Rating Catalog Topology Buck Iout (max) (A) 20 Vin (max) (V) 18 Vin (min) (V) 2.95 Vout (max) (V) 5.5 Vout (min) (V) 0.25 Features Adaptive/Dynamic Voltage Scaling, Adjustable current limit, Adjustable soft start, Differential Remote Sense, Enable, Forced PWM, Frequency synchronization, I2C/PMBus, Overcurrent protection, Phase Interleaving, Power good, Prebias startup, Synchronous rectification, UVLO adjustable, Voltage Margining Control mode current mode Operating temperature range (°C) -40 to 150 Iq (typ) (A) 0.009 Duty cycle (max) (%) 85
Rating Catalog Topology Buck Iout (max) (A) 20 Vin (max) (V) 18 Vin (min) (V) 2.95 Vout (max) (V) 5.5 Vout (min) (V) 0.25 Features Adaptive/Dynamic Voltage Scaling, Adjustable current limit, Adjustable soft start, Differential Remote Sense, Enable, Forced PWM, Frequency synchronization, I2C/PMBus, Overcurrent protection, Phase Interleaving, Power good, Prebias startup, Synchronous rectification, UVLO adjustable, Voltage Margining Control mode current mode Operating temperature range (°C) -40 to 150 Iq (typ) (A) 0.009 Duty cycle (max) (%) 85
LQFN-CLIP (RVF) 40 35 mm² (7 mm × 5 mm)
  • Split rail support: 2.95-V to 18-V PVIN; 2.95-V to 18-V AVIN (4-VIN VDD5 for switching)
  • Integrated 5.5-mΩ/1.8-mΩ MOSFETs
  • Average current mode control with selectable internal compensation
  • 2×, 3×, 4× stackable with current sharing up to 80 A, supporting a single address per output
  • Selectable 0.5-V to 5.5-V output via pin strap or 0.25-V to 5.5-V using PMBus VOUT_COMMAND
  • Extensive PMBus command set with telemetry for VOUT, IOUT and internal die temperature
  • Differential remote sensing with internal FB divider for < 1% VOUT error –40°C to +150°C TJ
  • AVS and margining capabilities through PMBus
  • MSEL pins pin programming PMBus defaults
  • 12 Selectable switching frequencies from 225 kHz to 1.5 MHz (8 pin-strap options)
  • Frequency sync in/sync out
  • Supports prebiased output
  • Supports strongly coupled inductor
  • 7-mm × 5-mm × 1.5-mm, 40-pin QFN, pitch = 0.5 mm
  • Create a Custom Design Using the TPS546B24A With WEBENCH Power Designer
  • Split rail support: 2.95-V to 18-V PVIN; 2.95-V to 18-V AVIN (4-VIN VDD5 for switching)
  • Integrated 5.5-mΩ/1.8-mΩ MOSFETs
  • Average current mode control with selectable internal compensation
  • 2×, 3×, 4× stackable with current sharing up to 80 A, supporting a single address per output
  • Selectable 0.5-V to 5.5-V output via pin strap or 0.25-V to 5.5-V using PMBus VOUT_COMMAND
  • Extensive PMBus command set with telemetry for VOUT, IOUT and internal die temperature
  • Differential remote sensing with internal FB divider for < 1% VOUT error –40°C to +150°C TJ
  • AVS and margining capabilities through PMBus
  • MSEL pins pin programming PMBus defaults
  • 12 Selectable switching frequencies from 225 kHz to 1.5 MHz (8 pin-strap options)
  • Frequency sync in/sync out
  • Supports prebiased output
  • Supports strongly coupled inductor
  • 7-mm × 5-mm × 1.5-mm, 40-pin QFN, pitch = 0.5 mm
  • Create a Custom Design Using the TPS546B24A With WEBENCH Power Designer

The TPS546B24A is a highly integrated, non-isolated DC/DC converter capable of high frequency operation and 20-A current output from a 7-mm × 5-mm package. Two, three, and four TPS546B24A devices can be interconnected to provide up to 80 A on a single output. The device has an option to overdrive the internal 5-V LDO with an external 5-V supply via the VDD5 pin to improve efficiency and reduce power dissipation of the converter.

The TPS546B24A uses a proprietary fixed-frequency current-mode control with input feedforward and selectable internal compensation components for minimal size and stability over a wide range of output capacitances.

The PMBus interface with 1-MHz clock support gives a convenient, standardized digital interface for converter configuration as well as monitoring 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. Back-channel communication between stacked devices enables all TPS546B24Aconverters powering a single output rail to share a single address to simplify system software/firmware design. Key parameters including output voltage, switching frequency, soft-start time, and overcurrent fault limits can also be configured through BOM selection without PMBus communication to support program free power-up.

The TPS546B24A is a highly integrated, non-isolated DC/DC converter capable of high frequency operation and 20-A current output from a 7-mm × 5-mm package. Two, three, and four TPS546B24A devices can be interconnected to provide up to 80 A on a single output. The device has an option to overdrive the internal 5-V LDO with an external 5-V supply via the VDD5 pin to improve efficiency and reduce power dissipation of the converter.

The TPS546B24A uses a proprietary fixed-frequency current-mode control with input feedforward and selectable internal compensation components for minimal size and stability over a wide range of output capacitances.

The PMBus interface with 1-MHz clock support gives a convenient, standardized digital interface for converter configuration as well as monitoring 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. Back-channel communication between stacked devices enables all TPS546B24Aconverters powering a single output rail to share a single address to simplify system software/firmware design. Key parameters including output voltage, switching frequency, soft-start time, and overcurrent fault limits can also be configured through BOM selection without PMBus communication to support program free power-up.
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針腳對針腳的功能與所比較的裝置相同。
TPS546A24A 現行 具有針腳設置和 PMBus 的 2.95-V 至 18-V、可堆疊 10-A 同步 SWIFT™ 降壓轉換器 Lower current equivalent part.
TPS546D24A 現行 具有針腳設置和 PMBus® 的 2.95V 至 16V、可堆疊 40A 同步 SWIFT™ 降壓轉換器 Higher current equivalent part.

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 TPS546B24A 2.95-V to 18-V, 20-A, up to 4x Stackable, PMBus Buck Converter datasheet (Rev. A) 2020/9/22
Application brief Powering FPGAs Supporting SmartVID using TI Switching Regulators and Modules With PMBus PDF | HTML 2026/7/21
應用說明 Extending Output Voltage Beyond 5.5V with the TPS546x24 Family PDF | HTML 2026/7/7
應用說明 Point-of-Load Solutions for Network Interface Cards (NIC) PDF | HTML 2021/9/8
選擇指南 Buck Converter Quick Reference Guide (Rev. B) 2021/4/8
證書 TPS546B24AEVM-1PH EU Declaration of Conformity (DoC) 2020/8/6
技術文章 3 big benefits of small cells PDF | HTML 2020/5/26
應用說明 Minimize On-Time-Jitter and Ripple by Optimizing Compensation 2020/5/11
技術文章 Advantages of scalability: from Peter Parker to pin-strapping PDF | HTML 2020/4/30
技術文章 SoC power design: 3 steps to a thermally optimized power supply PDF | HTML 2020/3/9
應用說明 Powering the TPS546D24A Device Family From a Single 3.3-V Input Power Supply (Rev. A) 2020/3/4
證書 TPS546B24AEVM EU Declaration of Conformity (DoC) 2020/2/26

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

TPS546A24AEVM-1PH — 2.95-V 至 18-V，10-A 同步降壓評估模組

TPS546A24AEVM-1PH 是適用於 TPS546A24A 10-A 降壓轉換器的評估模組 (EVM)。TPS546A24A 裝置是具備 PMBus 介面的堆疊式同步降壓裝置，可在額定 2.95-V 至 18-V 供電範圍內運作。該裝置允許透過 PMBus 介面進行編程與監控。
使用指南: PDF | HTML
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開發板

TPS546B24AEVM — 40-A、2 相同步降壓評估模組

TPS546B24AEVM-2PH 評估模組 (EVM) 是配備兩個 TPS546B24A 裝置的 40-A、雙相降壓轉換器。TPS546B24A 裝置是具備 PMBus 介面的堆疊式同步降壓裝置，可在額定 2.95-V 至 18-V 供電範圍內運作。本裝置允許透過 PMBus 介面進行編程與監控。
使用指南: PDF | HTML
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開發板

TPS546B24AEVM-1PH — 2.95-V 至 18-V，20-A 同步降壓評估模組

TPS546B24AEVM-1PH 是適用於 TPS546B24A 20-A 降壓轉換器的評估模組 (EVM)。TPS546B24A 裝置是具備 PMBus 介面的堆疊式同步降壓裝置，可在額定 2.95-V 至 18-V 供電範圍內運作。該裝置允許透過 PMBus 介面進行編程與監控。
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。
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模擬型號

TPS546B24A IBIS Model

SLUM709.ZIP (98 KB) - IBIS 模型
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模擬型號

TPS546B24A PSpice Transient Model

SLUM713.ZIP (258 KB) - PSpice 模型
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模擬型號

TPS546B24A SIMPLIS Transient and Average Model

SLUM750.ZIP (1784 KB) - SIMPLIS 模型
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模擬型號

TPS546B24A Unencrypted PSpice Average Model Package (Rev. A)

SLUM715A.ZIP (72 KB) - PSpice 模型
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計算工具

SLUC686 — TPS546x24A Compensation and Pin-Strap Resistor Calculator

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計算工具

SLURB01 — TPS546D24A TPS546B24A TPS546A24A Excel Calculator Tool and Checklist

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參考設計

PMP21814 — 用於通訊處理器電源的 4 相位、160-A 同步降壓轉換器參考設計

此參考設計使用四個具整合式 MOSFET 的 TPS546D24A 轉換器，以 0.9V 輸出支援 160A 全負載。本系統以 650kHz 的切換頻率運作，並具備 PMBus 介面，可用於設定主要轉換器參數，包括內部補償。詳細的測試報告包括效率熱、穩定性和負載暫態結果。
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封裝 針腳 CAD 符號、佔位空間與 3D 模型
LQFN-CLIP (RVF) 40 Ultra Librarian
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