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DC/DC 控制器

TPS40428

現行

雙輸出、2 相位、可堆疊 PMBus 同步降壓無驅動器控制器

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產品規格表

TPS40428

現行
產品規格表 立即訂購

產品詳細資料

Rating Catalog Topology Multiphase Iout (max) (A) 40 Vin (max) (V) 20 Vin (min) (V) 4.5 Vout (max) (V) 5 Vout (min) (V) 0.6 Control mode Voltage mode Features Adjustable current limit, Dynamic Voltage Scaling, Enable, Frequency synchronization, PMBus, Phase Interleaving, Power good, Pre-Bias Start-Up, Remote Sense, Synchronous Rectification, UVLO adjustable, Voltage Margining Duty cycle (max) (%) 46 Iq (typ) (A) 0.018 Number of phases 2 Operating temperature range (°C) -40 to 125
Rating Catalog Topology Multiphase Iout (max) (A) 40 Vin (max) (V) 20 Vin (min) (V) 4.5 Vout (max) (V) 5 Vout (min) (V) 0.6 Control mode Voltage mode Features Adjustable current limit, Dynamic Voltage Scaling, Enable, Frequency synchronization, PMBus, Phase Interleaving, Power good, Pre-Bias Start-Up, Remote Sense, Synchronous Rectification, UVLO adjustable, Voltage Margining Duty cycle (max) (%) 46 Iq (typ) (A) 0.018 Number of phases 2 Operating temperature range (°C) -40 to 125
VQFN (RHA) 40 36 mm² 6 x 6
  • Smart Power Mode in Factory Default (Compatible with TI Smart Power Stage CSD95378B and Pin-for-Pin Equivalent to TPS40425 – Non-Smart Power Mode in Factory Default)
  • Single Supply Operation: 4.5 V to 20 V
  • VOUT from 0.6 V
  • Dual or Multi-Phase Synchronous Buck Controller
  • Individual High-Speed AVS Interface
  • Fast Transient Response
  • Stackable up to Four Phases
    • 2-, 3-, or 4-Phase Interleaved Phase Shifts
    • Accurate Current Sharing
  • PMBus Interface Capability
    • Margining Up/Down with 2-mV Step
    • Programmable Fault Limit and Response
    • ±0.8% VOUT
    • Accuracy Current Monitoring
    • ±3°C External Temperature Monitoring In Smart Power Mode
    • Programmable UVLO ON/OFF Thresholds
    • Programmable Soft-Start Time, Turn-On Delay, and Turn-Off Delay
  • On-Chip Non-Volatile Memory (NVM) to Store Custom Configurations
  • 0.6-V Reference Voltage with 0.5% Accuracy from –40°C to 125°C
  • Programmable ƒSW from 200 kHz to 1.5 MHz
  • Supports Pre-biased Output
  • Differential Remote Sensing
  • Synchronization to an Extermal Clock
  • OC/OV/UV/OT Fault Protection
  • 40-Pin, 6 mm × 6 mm, QFN Package
  • Smart Power Mode in Factory Default (Compatible with TI Smart Power Stage CSD95378B and Pin-for-Pin Equivalent to TPS40425 – Non-Smart Power Mode in Factory Default)
  • Single Supply Operation: 4.5 V to 20 V
  • VOUT from 0.6 V
  • Dual or Multi-Phase Synchronous Buck Controller
  • Individual High-Speed AVS Interface
  • Fast Transient Response
  • Stackable up to Four Phases
    • 2-, 3-, or 4-Phase Interleaved Phase Shifts
    • Accurate Current Sharing
  • PMBus Interface Capability
    • Margining Up/Down with 2-mV Step
    • Programmable Fault Limit and Response
    • ±0.8% VOUT
    • Accuracy Current Monitoring
    • ±3°C External Temperature Monitoring In Smart Power Mode
    • Programmable UVLO ON/OFF Thresholds
    • Programmable Soft-Start Time, Turn-On Delay, and Turn-Off Delay
  • On-Chip Non-Volatile Memory (NVM) to Store Custom Configurations
  • 0.6-V Reference Voltage with 0.5% Accuracy from –40°C to 125°C
  • Programmable ƒSW from 200 kHz to 1.5 MHz
  • Supports Pre-biased Output
  • Differential Remote Sensing
  • Synchronization to an Extermal Clock
  • OC/OV/UV/OT Fault Protection
  • 40-Pin, 6 mm × 6 mm, QFN Package

The TPS40428 device is a PMBus, synchronous buck, driverless controller. It operates in smart power mode with factory default settings, and it can operate in non-smart power mode after PMBus programing and power reboot. It can be configured for dual-output or 2-phase operation. It is also stackable up to 4 phases to support load current as high as 120 A. Interleaved phase shift for 2-. 3-, or 4-phases reduce the input and output ripples therefore reducing input and output capacitance.

The wide input voltage range can support 5-V and 12-V intermediate supply buses. The 0.5% reference voltage satisfies the need of precision voltage to the modern ASICs.

Using the PMBus standard, the TPS40428 device can program reference voltage, fault limit, UVLO threshold, soft-start time and turn-on and turn-off delay.

In addition, the device implements an accurate measurement system to monitor the output voltages, currents and temperatures for individual channels.

For all available packages, see the orderable addendum at the end of the data sheet.

The TPS40428 device is a PMBus, synchronous buck, driverless controller. It operates in smart power mode with factory default settings, and it can operate in non-smart power mode after PMBus programing and power reboot. It can be configured for dual-output or 2-phase operation. It is also stackable up to 4 phases to support load current as high as 120 A. Interleaved phase shift for 2-. 3-, or 4-phases reduce the input and output ripples therefore reducing input and output capacitance.

The wide input voltage range can support 5-V and 12-V intermediate supply buses. The 0.5% reference voltage satisfies the need of precision voltage to the modern ASICs.

Using the PMBus standard, the TPS40428 device can program reference voltage, fault limit, UVLO threshold, soft-start time and turn-on and turn-off delay.

In addition, the device implements an accurate measurement system to monitor the output voltages, currents and temperatures for individual channels.

For all available packages, see the orderable addendum at the end of the data sheet.
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技術文件

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重要文件 類型 標題 格式選項 日期
* Data sheet TPS40428 Dual Output, 2-Phase, Stackable PMBus Synchronous Buck Driverless Controller with Adaptive Voltage Scaling (AVS) Bus datasheet (Rev. A) PDF | HTML 2014年 7月 22日
Application note Multiphase Buck Design from Start to Finish, Part 1 (Rev. B) 2021年 4月 7日
Application note SMT Guidelines for Stacked Inductor (Inductor On Top) on Voltage Regulator IC 2016年 2月 22日
Analog Design Journal MOSFET power losses and how they affect power-supply efficiency 2016年 1月 26日
Technical article Select the correct PMBus POL solution for your application PDF | HTML 2015年 8月 3日

設計與開發

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開發板

TPS40428EVM-594 — 具有 PMBus 介面的 TPS40428 EVM 雙輸出

The TPS40428EVM evaluation module (EVM) allows users to evaluate the TPS40428. The TPS40428 is a PMBus, synchronous buck, driverless controller. It can be configured for dual-output or 2-phase operation.  The TPS40428EVM is designed to demonstrate the TPS40428 in a typical, dual-output (...)

使用指南: PDF
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應用軟體及架構

FUSION_DIGITAL_POWER_DESIGNER — 數位電源軟體

Fusion Digital Power™ 圖形使用者介面 (GUI) 軟體用於配置和監控選擇的德州儀器數位電源控制器和序列器/健康狀態監控器。該應用程式使用 PMBus 協定，透過 TI USB 轉接器經由序列匯流排與裝置通訊。
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模擬型號

TPS40428 PSpice Transient Model

SLUM434.ZIP (247 KB) - PSpice Model
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參考設計

PMP11184 — 適用於 ASIC 處理器且具有 PMBus 的高效率、功率密度 1V/120A/30A/30A (4+1+1) 參考設計

PMP11184 是適用於高電流 ASIC 核心軌調節的晶片組解決方案。其採用 TPS53647 4 相位控制器用於 120A 高電流軌，並採用 DCAP+ 控制以實現快速暫態響應，同時採用 TI 專有的 AutoBalance，可實現緊密的穩定和動態相位對相位電流平衡。此外也運用 TPS40428 雙控制器，以實現雙 30A 軌。這兩種控制器都驅動 TI NexFET 智慧功率級，以實現高功率密度和效率。PMBus 功能及板載 NVM 可遙測輸出電壓、電流、溫度和功率，讓設計、配置與自訂變得更簡單。
Test report: PDF
電路圖: PDF
參考設計

PMP10896 — 適用於企業乙太網路交換器的完整 PMBus 電源系統參考設計

完整的 PMBus 電源系統，適用於 3 ASIC/FPGA 核心、DDR3 核心記憶體，以及高性能乙太網路交換器上常見的輔助電壓。
Test report: PDF
電路圖: PDF
參考設計

PMP9131 — 具有 PMBus 介面的高密度 160A (210A 峰值) 四相 DC-DC 降壓轉換器參考設計

固定頻率電壓模式控制用於 CPU、記憶體和 ASIC 應用，其中需要可預測頻率和/或與外部時鐘同步。  四個高電流同步功率級提供這些應用所需的高電流和低損耗。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。PMP9131 著重於簡化電氣測試，以及透過 PMBus 介面「即時」更改的能力。板載偏壓電源和高速動態負載，完善功能齊全的測試介面。
Test report: PDF
電路圖: PDF
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