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LP8758-B0

現行

四相單 16A 輸出 DC-DC 降壓轉換器

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產品規格表

LP8758-B0

現行
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產品詳細資料

Product type Processor and FPGA Regulated outputs (#) 1 Step-down DC/DC converter 1 Step-up DC/DC converter 0 LDO 0 Vin (min) (V) 2.5 Vin (max) (V) 5.5 Vout (min) (V) 0.5 Vout (max) (V) 3.36 Iout (max) (A) 16 Configurability Factory programmable, Software configurable Features Adjustable current limit, Dynamic voltage scaling, Enable, Light-load efficiency, Multiple outputs, Output discharge, Phase interleaving, Power good, Remote sense, Synchronous rectification Rating Catalog Operating temperature range (°C) -40 to 85 Step-down DC/DC controller 0 Step-up DC/DC controller 0 Iq (typ) (mA) 0.006 Switching frequency (max) (kHz) 3300 Shutdown current (ISD) (typ) (µA) 1 Switching frequency (typ) (kHz) 3000
Product type Processor and FPGA Regulated outputs (#) 1 Step-down DC/DC converter 1 Step-up DC/DC converter 0 LDO 0 Vin (min) (V) 2.5 Vin (max) (V) 5.5 Vout (min) (V) 0.5 Vout (max) (V) 3.36 Iout (max) (A) 16 Configurability Factory programmable, Software configurable Features Adjustable current limit, Dynamic voltage scaling, Enable, Light-load efficiency, Multiple outputs, Output discharge, Phase interleaving, Power good, Remote sense, Synchronous rectification Rating Catalog Operating temperature range (°C) -40 to 85 Step-down DC/DC controller 0 Step-up DC/DC controller 0 Iq (typ) (mA) 0.006 Switching frequency (max) (kHz) 3300 Shutdown current (ISD) (typ) (µA) 1 Switching frequency (typ) (kHz) 3000
DSBGA (YFF) 35 6.6 mm² (— mm × — mm)
  • High-Efficiency Step-Down Four-Phase DC/DC Converter Cores:
    • Maximum Output Current 16 A
    • Auto PWM-PFM and Forced-PWM Operations
    • Auto Phase Adding/Shedding and Force Multi-Phase Operations
    • Remote Differential Feedback Voltage Sensing
    • Programmable Output Voltage Slew-Rate from 30 mV/µs to 0.5 mV/µs
    • VOUT Range = 0.5 V to 3.36 V with DVS
  • Programmable Start-up and Shutdown Delays with Enable Signal
  • I2C-Compatible Interface which Supports Standard (100 kHz), Fast (400 kHz), Fast+ (1 MHz), and High-Speed (3.4 MHz) Modes
  • Interrupt Function with Programmable Masking
  • Load Current Measurement
  • Output Short-Circuit and Overload Protection
  • Spread-Spectrum Mode and Phase Interleaving for EMI Reduction
  • Overtemperature Warning and Protection
  • Undervoltage Lockout (UVLO)
  • High-Efficiency Step-Down Four-Phase DC/DC Converter Cores:
    • Maximum Output Current 16 A
    • Auto PWM-PFM and Forced-PWM Operations
    • Auto Phase Adding/Shedding and Force Multi-Phase Operations
    • Remote Differential Feedback Voltage Sensing
    • Programmable Output Voltage Slew-Rate from 30 mV/µs to 0.5 mV/µs
    • VOUT Range = 0.5 V to 3.36 V with DVS
  • Programmable Start-up and Shutdown Delays with Enable Signal
  • I2C-Compatible Interface which Supports Standard (100 kHz), Fast (400 kHz), Fast+ (1 MHz), and High-Speed (3.4 MHz) Modes
  • Interrupt Function with Programmable Masking
  • Load Current Measurement
  • Output Short-Circuit and Overload Protection
  • Spread-Spectrum Mode and Phase Interleaving for EMI Reduction
  • Overtemperature Warning and Protection
  • Undervoltage Lockout (UVLO)

The LP8758 is designed to meet the power management requirements of the latest application processors in mobile phones and similar portable applications. The device contains four step-down DC/DC converter cores, which are bundled together in a single 4-phase buck converter. The device is controlled by an I2C-compatible serial interface.

The automatic PWM-PFM (AUTO mode) operation, together with the automatic phase adding/shedding, maximizes efficiency over a wide output-current range. The LP8758 supports remote differential voltage sensing to compensate IR drop between the regulator output and the point-of-load, thus improving the accuracy of the output voltage.

The LP8758 supports programmable start-up and shutdown delays synchronized to Enable signal.

The protection features include short-circuit protection, current limits, input supply UVLO, and temperature warning and shutdown functions. Several error flags are provided for status information of the device. In addition, the LP8758 device supports load current measurement without the addition of external current sense resistors. During start-up and voltage change, the device controls the output slew rate to minimize output voltage overshoot and the inrush current.

The LP8758 is designed to meet the power management requirements of the latest application processors in mobile phones and similar portable applications. The device contains four step-down DC/DC converter cores, which are bundled together in a single 4-phase buck converter. The device is controlled by an I2C-compatible serial interface.

The automatic PWM-PFM (AUTO mode) operation, together with the automatic phase adding/shedding, maximizes efficiency over a wide output-current range. The LP8758 supports remote differential voltage sensing to compensate IR drop between the regulator output and the point-of-load, thus improving the accuracy of the output voltage.

The LP8758 supports programmable start-up and shutdown delays synchronized to Enable signal.

The protection features include short-circuit protection, current limits, input supply UVLO, and temperature warning and shutdown functions. Several error flags are provided for status information of the device. In addition, the LP8758 device supports load current measurement without the addition of external current sense resistors. During start-up and voltage change, the device controls the output slew rate to minimize output voltage overshoot and the inrush current.

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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 LP8758-B0 Four-Phase DC/DC Step-Down Converter datasheet (Rev. C) PDF | HTML 2018/3/2
使用指南 LP8758 Quick Sample Module User Guide PDF | HTML 2022/8/25
應用說明 LP8758 Flexible Four-Core Buck Regulator 2015/8/17
技術文章 Multiphase DC/DC converters provide low ripple, integrated solution for FPGA power PDF | HTML 2015/7/9

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

LP8758EVM — LP8758-B0 四相 DC-DC 降壓轉換器評估模組

LP8758EVM 展示了德州儀器的積體電路 LP8758。LP8758 是一款高性能、多相降壓轉換器，專為滿足行動電話與類似可攜式應用中最新應用處理器的電源管理需求而設計。該裝置包含四個降壓 DC-DC 轉換器核心，這些核心捆綁在單一的 4 相降壓轉換器中。LP8758 能夠驅動高達 16 A 負載電流，並完美結合解決方案尺寸與效率。該裝置可透過 PC 與隨附的 GUI.A50 進行控制。

 

 

此參考設計使用 AMC1304M05。此參考設計也可搭配 AMC1304M25 使用。

此參考設計使用 MSP430F67641。此參考設計也可搭配 MSP430F67641A 使用。

使用指南: PDF
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開發模組 (EVM) 的 GUI

SNVC189 — LP8758-xxEVM GUI

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支援軟體

SNVC186 — LP8758EVM Qt Source

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模擬型號

LP8758-B0 PSpice Transient Model

SNVMAW2.ZIP (265 KB) - PSpice 模型
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計算工具

PEET-GUI — PMIC 效率評估器工具 (PEET)

The PMIC Efficiency Estimator Tool (PEET GUI) is a graphical user interface used to easily evaluate PMIC DC/DC regulator efficiency relative to your design conditions. The PEET GUI can be used to configure each DC/DC regulator separately and provides real-time efficiency and power dissipation data (...)
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參考設計

TIDA-00574 — Xilinx Zynq 7000 系列 5W 小型高效率低雜訊電源解決方案參考設計

TIDA-00574 展示了小解決方案尺寸與高電流密度及低雜訊的電源解決方案。  其支援內部排序及高輸出電壓準確度。

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參考設計

TIDA-00596 — 適用於伺服器線路卡的小尺寸解決方案多軌參考設計

TIDA-00596 展示了小解決方案尺寸與高電流密度的電源軌。支援內部排序及高輸出電壓準確度。

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DSBGA (YFF) 35 Ultra Librarian
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