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LP87745-Q1

現行

適用於雷達 MMIC 的汽車三路 3-A 低雜訊降壓轉換器、IO LDO 和 5-V 升壓轉換器 PMIC

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產品規格表

LP87745-Q1

現行
產品規格表 立即訂購

產品詳細資料

Processor supplier Texas Instruments Processor name mmWave AWR, mmWave IWR Product type Radar sensor Regulated outputs (#) 5 Step-down DC/DC converter 3 Step-up DC/DC converter 1 LDO 1 Vin (min) (V) 3 Vin (max) (V) 4 Vout (min) (V) 0.9 Vout (max) (V) 1.8 Iout (max) (A) 3 Configurability Factory programmable, Software configurable TI functional safety category Functional Safety-Compliant Features Output Short-Circuit and Overload Protection, Overtemperature warning and protection, Overvoltage protection, SPI, UVLO Rating Automotive Operating temperature range (°C) -40 to 125 Step-down DC/DC controller 0 Step-up DC/DC controller 0 Iq (typ) (mA) 0.02 Switching frequency (max) (kHz) 19200 Shutdown current (ISD) (typ) (µA) 20 Switching frequency (typ) (kHz) 17600
Processor supplier Texas Instruments Processor name mmWave AWR, mmWave IWR Product type Radar sensor Regulated outputs (#) 5 Step-down DC/DC converter 3 Step-up DC/DC converter 1 LDO 1 Vin (min) (V) 3 Vin (max) (V) 4 Vout (min) (V) 0.9 Vout (max) (V) 1.8 Iout (max) (A) 3 Configurability Factory programmable, Software configurable TI functional safety category Functional Safety-Compliant Features Output Short-Circuit and Overload Protection, Overtemperature warning and protection, Overvoltage protection, SPI, UVLO Rating Automotive Operating temperature range (°C) -40 to 125 Step-down DC/DC controller 0 Step-up DC/DC controller 0 Iq (typ) (mA) 0.02 Switching frequency (max) (kHz) 19200 Shutdown current (ISD) (typ) (µA) 20 Switching frequency (typ) (kHz) 17600
VQFN-HR (RXV) 28 22.5 mm² (5 mm × 4.5 mm)
  • AEC-Q100 qualified with the following results:
    • Device temperature grade 1: –40°C to +125°C ambient operating temperature
  • Functional safety-compliant device
    • Developed for functional safety applications
    • Documentation available to aid ISO 26262 functional safety system design up to ASIL-C / SIL-2
    • Input supply overvoltage and undervoltage monitoring
    • Regulator output overvoltage and undervoltage monitoring
    • Overvoltage and undervoltage monitoring for one external rail
    • Q&A watchdog
    • Level or PWM error signal monitor (ESM)
    • BIST and CRC
  • Input voltage: 3.3V nominal (3V to 4V range)
  • Three low-noise step-down DC/DC converters:
    • Output voltage: 0.9V to 1.9V, 0.8V (BUCK3), 0.82V (BUCK3)
    • Maximum output current: 3A/ 3A/ 3A
    • Switching frequency: 4.4MHz, 8.8MHz, and 17.6MHz
  • 5V boost converter
    • Maximum output current: 350mA
  • 150mA LDO
    • Output voltage 1.8V or 3.3V
  • Output short-circuit and overload protection
  • Input overvoltage protection (OVP) and undervoltage lockout (UVLO)
  • Overtemperature warning and protection
  • Serial peripheral interface (SPI)
  • AEC-Q100 qualified with the following results:
    • Device temperature grade 1: –40°C to +125°C ambient operating temperature
  • Functional safety-compliant device
    • Developed for functional safety applications
    • Documentation available to aid ISO 26262 functional safety system design up to ASIL-C / SIL-2
    • Input supply overvoltage and undervoltage monitoring
    • Regulator output overvoltage and undervoltage monitoring
    • Overvoltage and undervoltage monitoring for one external rail
    • Q&A watchdog
    • Level or PWM error signal monitor (ESM)
    • BIST and CRC
  • Input voltage: 3.3V nominal (3V to 4V range)
  • Three low-noise step-down DC/DC converters:
    • Output voltage: 0.9V to 1.9V, 0.8V (BUCK3), 0.82V (BUCK3)
    • Maximum output current: 3A/ 3A/ 3A
    • Switching frequency: 4.4MHz, 8.8MHz, and 17.6MHz
  • 5V boost converter
    • Maximum output current: 350mA
  • 150mA LDO
    • Output voltage 1.8V or 3.3V
  • Output short-circuit and overload protection
  • Input overvoltage protection (OVP) and undervoltage lockout (UVLO)
  • Overtemperature warning and protection
  • Serial peripheral interface (SPI)

The LP8774x-Q1 device is designed to meet the power management requirements of the AWR and IWR MMICs in various automotive and industrial radar applications. The device has three step-down DC/DC converters, a 5V boost converter and a 1.8V or 3.3V LDO. The LDO is powered from the boost and intended for xWR I/O supply. An SPI serial interface and enable signals control the device.

The step-down DC/DC converters support programmable switching frequency of 4.4MHz, 8.8MHz, or 17.6MHz. High switching frequency and low noise across wide frequency range enable LDO-free power solution with minimal or no passive filtering. The high switching frequency improves thermals and transient settling for the MMIC RF rails. The device forces the switching clock into PWM mode for optimal RF performance and can also be synchronized to an external clock. The device supports remote voltage sensing to compensate IR drop between the regulator output and the point-of-load (POL) which improves the accuracy of the output voltage.

The LP8774x-Q1 device supports programmable start-up and shutdown delays and sequences which are synchronized to the ENABLE signal. The sequences can also include GPO signals to control external regulators, load switches, and processor reset. The default settings for the device are programmed into nonvolatile memory (NVM). The device controls the output slew rate to minimize output voltage overshoot and in-rush current during device start-up.

The LP8774x-Q1 device is designed to meet the power management requirements of the AWR and IWR MMICs in various automotive and industrial radar applications. The device has three step-down DC/DC converters, a 5V boost converter and a 1.8V or 3.3V LDO. The LDO is powered from the boost and intended for xWR I/O supply. An SPI serial interface and enable signals control the device.

The step-down DC/DC converters support programmable switching frequency of 4.4MHz, 8.8MHz, or 17.6MHz. High switching frequency and low noise across wide frequency range enable LDO-free power solution with minimal or no passive filtering. The high switching frequency improves thermals and transient settling for the MMIC RF rails. The device forces the switching clock into PWM mode for optimal RF performance and can also be synchronized to an external clock. The device supports remote voltage sensing to compensate IR drop between the regulator output and the point-of-load (POL) which improves the accuracy of the output voltage.

The LP8774x-Q1 device supports programmable start-up and shutdown delays and sequences which are synchronized to the ENABLE signal. The sequences can also include GPO signals to control external regulators, load switches, and processor reset. The default settings for the device are programmed into nonvolatile memory (NVM). The device controls the output slew rate to minimize output voltage overshoot and in-rush current during device start-up.
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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 LP8774x-Q1 Three Buck Converters and 5-V Boost for AWR and IWR Radar Sensors datasheet (Rev. B) PDF | HTML 2024/6/24
白皮書 mmWave Radar for Safe Sensing in Industrial Stationary and Mobile Applications PDF | HTML 2025/1/28
技術文章 Addressing 3 power design challenges for corner radar systems PDF | HTML 2023/12/22
技術文章 What ADAS engineers need to know about the new NCAP requirements for radar PDF | HTML 2022/1/4
證書 LP877451Q1EVM EU RoHS Declaration of Conformity (DoC) 2021/9/27

設計與開發

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探索包括 LP87745-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。

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開發板

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使用指南: PDF | HTML
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AWR2E44PEVM — AWR2E44P 評估模組

AWR2E44PEVM 是適用於 AWR2E44P mmWave 感測裝置且使用方便的評估板，可直接連線至 DCA1000EVM。此 EVM 套件包含開始為晶片內建 ARM® Cortex-R5F® 控制器及硬體加速器 (HWA 2.1) 開發軟體的一切所需。此外也包含適用編程和偵錯的板載模擬，以及板載按鈕和 LED，以快速整合簡單的使用者介面。
使用指南: PDF | HTML
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開發板

LP877451Q1EVM — 適用於 ADAS PMIC 低雜訊配置 3 降壓和 5-V 升壓的 LP8774x-Q1 評估模組

LP8774x-Q1 裝置設計旨在滿足各種汽車與工業雷達應用中的 AWR 和 IWR MMIC 電源管理需求。裝置配備三個降壓式 DC/DC 轉換器、5 V 升壓轉換器和 1.8 V/3.3 V LDO。LDO 由升壓供電，且旨在供 xWR 與週邊裝置 IO 電源使用。本裝置由 SPI 序列介面及啟用訊號控制。

降壓式 DC/DC 轉換器支援 17.6 MHz、8.8 MHz 或 4.4 MHz 的可編程切換頻率，並在廣泛頻率範圍中擁有低雜訊，能以最小被動式濾波或無需額外被動式濾波，實現免 LDO 的電源解決方案。LP8774x-Q1 (...)

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模擬型號

LP87745-Q1 BUCK PSpice Transient Model

SNVMCA5.ZIP (46 KB) - PSpice 模型
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模擬型號

LP87745-Q1 Transient and AC SIMPLIS Buck Model (Rev. C)

SNVMC81C.ZIP (65 KB) - SIMPLIS 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

TIDEP-01027 — 高端角雷達參考設計

TIDA-01027 參考設計使用 AWR2944 評估模組 (EVM) 為角雷達應用提供良好基礎，以符合 NCAP R79 安全要求。此設計讓使用者能在裝置視野 (FoV) 最遠 200 公尺下，估計並追蹤裝置位置 (在方位角平面) 與物體速度。此應用著重於邊角與前端長距離雷達系統的多項功能，例如盲點偵測、前交叉路口輔助及車道變換輔助功能。另外也展示了 TI 壓縮引擎和硬體加速器 (HWA) 功能的使用狀況。

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參考設計

TIDEP-01030 — 適‌用於高階轉角雷達的 mmWave 診斷和監控參考設計

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