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多通道 IC (PMIC)

LP875701-Q1

現行

適用於 Mobileye EyeQ4 的車用多相 1V、10A 降壓轉換器

立即訂購
產品規格表
使用指南

LP875701-Q1

現行
產品規格表 立即訂購

產品詳細資料

Processor supplier Mobileye Processor name EyeQ4 Mid 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) 2.8 Vin (max) (V) 5.5 Vout (min) (V) 0.985 Vout (max) (V) 1.015 Iout (max) (A) 10 Configurability Factory programmable, Software configurable Features Dynamic voltage scaling, Enable, Enable pin, I2C control, Overcurrent protection, Power good, Power sequencing, Power supply and system monitoring, Spread-Spectrum Clock (SSC) Generation, Thermal shutdown, UVLO fixed Rating Automotive Operating temperature range (°C) -40 to 125 Step-down DC/DC controller 0 Step-up DC/DC controller 0 Iq (typ) (mA) 0.0067 Switching frequency (max) (kHz) 3300 Shutdown current (ISD) (typ) (µA) 1.4 Switching frequency (typ) (kHz) 3000
Processor supplier Mobileye Processor name EyeQ4 Mid 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) 2.8 Vin (max) (V) 5.5 Vout (min) (V) 0.985 Vout (max) (V) 1.015 Iout (max) (A) 10 Configurability Factory programmable, Software configurable Features Dynamic voltage scaling, Enable, Enable pin, I2C control, Overcurrent protection, Power good, Power sequencing, Power supply and system monitoring, Spread-Spectrum Clock (SSC) Generation, Thermal shutdown, UVLO fixed Rating Automotive Operating temperature range (°C) -40 to 125 Step-down DC/DC controller 0 Step-up DC/DC controller 0 Iq (typ) (mA) 0.0067 Switching frequency (max) (kHz) 3300 Shutdown current (ISD) (typ) (µA) 1.4 Switching frequency (typ) (kHz) 3000
VQFN-HR (RNF) 26 18 mm² (4.5 mm × 4 mm)
  • Qualified for Automotive Applications
  • AEC-Q100 Qualified With the Following Results:
    • Device Temperature Grade 1: –40°C to +125°C Ambient Operating Temperature
    • Device HBM ESD Classification Level 2
    • Device CDM ESD Classification Level C4B
  • Input Voltage: 2.8 V to 5.5 V
  • Output Voltage: 1.0 V
  • Four High-Efficiency Step-Down DC/DC Converter Cores:
    • Maximum Output Current: 10 A (2.5 A per Phase)
  • Switching Frequency: 3 MHz
  • Spread-Spectrum Mode and Phase Interleaving
  • Configurable General Purpose I/O (GPIOs)
  • I2C-Compatible Interface That Supports Standard (100 kHz), Fast (400 kHz), Fast+ (1 MHz), and High-Speed (3.4 MHz) Modes
  • Interrupt Function With Programmable Masking
  • Programmable Power-Good Signal (PGOOD)
  • Output Short-Circuit and Overload Protection
  • Overtemperature Warning and Protection
  • Overvoltage Protection (OVP) and Undervoltage Lockout (UVLO)
  • Qualified for Automotive Applications
  • AEC-Q100 Qualified With the Following Results:
    • Device Temperature Grade 1: –40°C to +125°C Ambient Operating Temperature
    • Device HBM ESD Classification Level 2
    • Device CDM ESD Classification Level C4B
  • Input Voltage: 2.8 V to 5.5 V
  • Output Voltage: 1.0 V
  • Four High-Efficiency Step-Down DC/DC Converter Cores:
    • Maximum Output Current: 10 A (2.5 A per Phase)
  • Switching Frequency: 3 MHz
  • Spread-Spectrum Mode and Phase Interleaving
  • Configurable General Purpose I/O (GPIOs)
  • I2C-Compatible Interface That Supports Standard (100 kHz), Fast (400 kHz), Fast+ (1 MHz), and High-Speed (3.4 MHz) Modes
  • Interrupt Function With Programmable Masking
  • Programmable Power-Good Signal (PGOOD)
  • Output Short-Circuit and Overload Protection
  • Overtemperature Warning and Protection
  • Overvoltage Protection (OVP) and Undervoltage Lockout (UVLO)

The LP875701-Q1 device is designed to meet the power-management requirements of the latest processors and platforms in various automotive power applications. The device contains four step-down DC/DC converter cores, which are configured as a 4-phase output in forced-PWM mode. The device is controlled by an I2C-compatible serial interface and by enable signals.

The LP875701-Q1 supports remote differential-voltage sensing for multiphase outputs to compensate IR drop between the regulator output and the point-of-load (POL) which improves the accuracy of the output voltage. The switching clock can be forced to PWM mode and also synchronized to an external clock to minimize the disturbances.

The LP875701-Q1 device supports load-current measurement without the addition of external current-sense resistors. The LP875701-Q1 device also supports programmable start-up and shutdown delays and sequences synchronized to enable signals. The sequences can also include GPIO signals to control external regulators, load switches, and processor reset. During start-up , the device controls the output slew rate to minimize output-voltage overshoot and in-rush current.

The LP875701-Q1 device is designed to meet the power-management requirements of the latest processors and platforms in various automotive power applications. The device contains four step-down DC/DC converter cores, which are configured as a 4-phase output in forced-PWM mode. The device is controlled by an I2C-compatible serial interface and by enable signals.

The LP875701-Q1 supports remote differential-voltage sensing for multiphase outputs to compensate IR drop between the regulator output and the point-of-load (POL) which improves the accuracy of the output voltage. The switching clock can be forced to PWM mode and also synchronized to an external clock to minimize the disturbances.

The LP875701-Q1 device supports load-current measurement without the addition of external current-sense resistors. The LP875701-Q1 device also supports programmable start-up and shutdown delays and sequences synchronized to enable signals. The sequences can also include GPIO signals to control external regulators, load switches, and processor reset. During start-up , the device controls the output slew rate to minimize output-voltage overshoot and in-rush 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 LP875701-Q1 Four-Phase 3-MHz 1-V 10-A DC/DC Buck Converter With Integrated Switches datasheet (Rev. A) PDF | HTML 2021/8/2
* 使用指南 LP875701A-Q1 Technical Reference Manual 2018/10/4
Application brief The Benefits of FlexPower PMIC Devices (Rev. B) PDF | HTML 2020/11/23
應用說明 How to Design Flexible Processor Power Systems Using PMICs (Rev. B) 2020/1/27
應用說明 Power Supply Design for Mobileye EyeQ4 Using LP8757x-Q1 2018/10/11

設計與開發

電源供應解決方案

探索包括 LP875701-Q1 的解決方案。TI 提供適用於 TI 與非 TI 之系統單晶片 (SoC)、處理器、微控制器、感測器或現場可編程邏輯閘陣列 (FPGA) 的電源供應解決方案。

檢視解決方案
開發板

LP875701Q1EVM — LP875701-Q1 單輸出四相位降壓轉換器評估模組

LP875701Q1EVM 展示了德州儀器的積體電路 LP875701-Q1。

LP875701-Q1 為一高性能，多相降壓式轉換器，設計用途可滿足汽車應用中最新應用處理器的電源管理需求。裝置包含四個降壓 DC-DC 轉換器核心，可配置為單一四相降壓轉換器。LP875701-Q1 能夠驅動高達 10 A 負載電流，並完美結合解決方案尺寸與效率。此裝置可透過 PC 及隨附的 GUI 控制。

使用指南: PDF
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開發模組 (EVM) 的 GUI

SNVC232 — LP8757EVM GUI

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模擬型號

LP875701 SIMPLIS Transient

SNVMBP0.ZIP (105 KB) - SIMPLIS 模型
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模擬型號

LP875701-Q1 PSpice Transient Model

SNVMBP1.ZIP (246 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

TIPA-050039 — 使用 LP875701-Q1 的 Mobileye EyeQ4 電源供應設計

此電源供應器設計詳細說明使用 LP875701-Q1 電源管理 IC 的 Mobileye EyeQ4 中 SoC (系統單晶片) 核心軌的電源考量。此電源設計假設輸入電壓為 3.3V 或 5V (+/-5%)。若系統輸入電壓較高，例如汽車電池，應使用降壓轉換器作為前置穩壓器，以產生 3.3V 或 5V 的供應電壓。

 

LP875701-Q1 具有 4 個降壓轉換器，可作為單一 1V 輸出多相轉換器。輸出啟動時，LP875701 會以 PWM 模式運作，且 4 個相位全以交錯模式切換。

 

如需詳細資訊，請見使用指南。 

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