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AC/DC & DC/DC converters (integrated FET)

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

Iout (max) (A) 20 Vin (min) (V) 2.95 Vin (max) (V) 18 Topology Buck Type Converter Switching frequency (min) (kHz) 225 Switching frequency (max) (kHz) 1500 Features Adaptive/Dynamic Voltage Scaling, Adjustable current limit, Differential Remote Sense, Enable, Forced PWM, Frequency synchronization, I2C/PMBus, Over Current Protection, Phase Interleaving, Power good, Pre-Bias Start-Up, Soft Start Adjustable, Synchronous Rectification, UVLO adjustable, Voltage Margining Control mode current mode Vout (min) (V) 0.25 Vout (max) (V) 5.5 Rating Catalog Operating temperature range (°C) -40 to 150 Iq (typ) (A) 0.009
Iout (max) (A) 20 Vin (min) (V) 2.95 Vin (max) (V) 18 Topology Buck Type Converter Switching frequency (min) (kHz) 225 Switching frequency (max) (kHz) 1500 Features Adaptive/Dynamic Voltage Scaling, Adjustable current limit, Differential Remote Sense, Enable, Forced PWM, Frequency synchronization, I2C/PMBus, Over Current Protection, Phase Interleaving, Power good, Pre-Bias Start-Up, Soft Start Adjustable, Synchronous Rectification, UVLO adjustable, Voltage Margining Control mode current mode Vout (min) (V) 0.25 Vout (max) (V) 5.5 Rating Catalog Operating temperature range (°C) -40 to 150 Iq (typ) (A) 0.009
LQFN-CLIP (RVF) 40 35 mm² 7 x 5
  • 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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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.

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類型 標題 日期
* Data sheet TPS546B24A 2.95-V to 18-V, 20-A, up to 4x Stackable, PMBus Buck Converter datasheet (Rev. A) 2020年 9月 22日
User guide TPS546B24A 2-Phase SWIFT™ Step-Down Converter Evaluation Module User's Guide (Rev. A) PDF | HTML 2022年 2月 3日
Application note Point-of-Load Solutions for Network Interface Cards (NIC) PDF | HTML 2021年 9月 8日
EVM User's guide TPS546B24A SWIFT™ Step-Down Converter Evaluation Module User's Guide (Rev. A) PDF | HTML 2021年 4月 27日
Selection guide Buck Converter Quick Reference Guide (Rev. B) 2021年 4月 8日
Certificate TPS546B24AEVM-1PH EU Declaration of Conformity (DoC) 2020年 8月 6日
Technical article 3 big benefits of small cells PDF | HTML 2020年 5月 26日
Application note Minimize On-Time-Jitter and Ripple by Optimizing Compensation 2020年 5月 11日
Technical article Advantages of scalability: from Peter Parker to pin-strapping PDF | HTML 2020年 4月 30日
Technical article SoC power design: 3 steps to a thermally optimized power supply PDF | HTML 2020年 3月 9日
Application note Powering the TPS546D24A Device Family From a Single 3.3-V Input Power Supply (Rev. A) 2020年 3月 4日
Certificate TPS546B24AEVM EU Declaration of Conformity (DoC) 2020年 2月 26日

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

The TPS546A24AEVM-1PH is an evaluation module (EVM) for the TPS546A24A 10-A buck converter. The TPS546A24A device is a stackable synchronous buck with PMBus interface that can operate from a nominal 2.95-V to 18-V supply. The device allows programming and monitoring through the PMBus interface.
使用指南: PDF | HTML
TI.com 無法提供
開發板

TPS546B24AEVM — 40-A、2 相同步降壓評估模組

The TPS546B24AEVM-2PH evaluation module (EVM) is a 40-A, two-phase buck converter with two TPS546B24A devices. The TPS546B24A device is a stackable synchronous buck with PMBus interface that can operate from a nominal 2.95-V to 18-V supply. The device allows programming and monitoring via the (...)
使用指南: PDF | HTML
TI.com 無法提供
開發板

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

The TPS546B24AEVM-1PH is an evaluation module (EVM) for the TPS546B24A 20-A buck converter. The TPS546B24A device is a stackable synchronous buck with PMBus interface that can operate from a nominal 2.95-V to 18-V supply. The device allows programming and monitoring through the PMBus interface.
使用指南: PDF | HTML
TI.com 無法提供
模擬型號

TPS546B24A IBIS Model

SLUM709.ZIP (98 KB) - IBIS Model
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模擬型號

TPS546B24A PSpice Transient Model

SLUM713.ZIP (258 KB) - PSpice Model
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模擬型號

TPS546B24A SIMPLIS Transient and Average Model

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

TPS546B24A Unencrypted PSpice Average Model Package (Rev. A)

SLUM715A.ZIP (72 KB) - PSpice Model
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計算工具

SLUC686 — TPS546x24A Compensation and Pin-Strap Resistor Calculator

支援產品和硬體

支援產品和硬體

產品
AC/DC & DC/DC converters (integrated FET)
TPS546A24A — 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 TPS546B24A — 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 TPS546D24A — 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
下載
計算工具

SLURB01 — TPS546D24A TPS546B24A TPS546A24A Excel Calculator Tool and Checklist

支援產品和硬體

支援產品和硬體

產品
AC/DC & DC/DC converters (integrated FET)
TPS546A24A — 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 TPS546B24A — 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 TPS546D24A — 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
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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

This reference design uses four TPS546D24A converters with integrated MOSFETs to support a full load of 160A at a 0.9V output. The system operates at a switching frequency of 650 kHz and has a PMBus interface that can be used to configure key converter parameters, including internal compensation. (...)
Test report: PDF
電路圖: PDF
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LQFN-CLIP (RVF) 40 檢視選項
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