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Texas Instruments LP8764-Q1 20A Buck Converters

Texas Instruments LP8764-Q1 20A Buck Converters are designed to meet the current processors' and platforms' power management requirements in various industrial and safety-relevant automotive applications. The device has four step-down DC/DC converter cores configurable for five different phase configurations from one 4-phase output to four 1-phase outputs. The device settings can be changed using an I2C-compatible serial interface or an SPI serial interface.

The automatic PFM/PWM (AUTO mode) operation and the automatic phase adding and phase shedding maximize efficiency over a wide output-current range. The Texas Instruments LP8764-Q1 device supports remote differential voltage sensing for multiphase outputs to compensate for the IR drop between the regulator output and the point-of-load (POL). This feature improves the output voltage's accuracy. The switching clock can be forced to PWM mode and the phases are interleaved. The spread-spectrum mode can be enabled and the switching can be synchronized to minimize the disturbances.

Features

  • AEC-Q100 Qualified with the following results
    • 2.8V to 5.5V input voltage
    • Device temperature grade 1 (–40°C to +125°C ambient operating temperature range)
    • Device HBM ESD Classification Level 2
    • Device CDM ESD Classification Level C4B
  • Functional Safety-Compliant
    • Developed for functional safety applications
    • Documentation is available to aid with ISO 26262 system design up to ASIL-D
    • Documentation is available to aid with IEC 61508 system design up to SIL-3
    • Systematic capability up to ASIL-D
    • Hardware integrity up to ASIL-D
    • Windowed voltage and over-current monitors
    • Watchdog with selectable trigger / Q&A mode
    • Level or PWM error signal monitoring (ESM)
    • Thermal monitoring with a high-temperature warning and thermal shutdown
    • Bit-integrity (CRC) error detection on configuration registers and non-volatile memory
  • Four high-efficiency step-down DC/DC converters
    • 0.3V to 3.34V (0.3V to 1.9V for multi-phase outputs) output voltage
    • Maximum output current: 5A per phase, up to 20A with 4-phase configuration
    • 0.5mV/µs to 33mV/µs programmable output voltage slew-rate
    • 2.2MHz or 4.4MHz switching frequency
  • Ten configurable general-purpose I/O (GPIO)
  • SPMI interface for multi-PMIC synchronization
  • Input overvoltage monitor (OVP) and undervoltage lockout (UVLO)

Applications

  • Advanced driver assistance systems (ADAS)
  • Front camera
  • Surround-view system ECU
  • Long range radar
  • Sensor fusion
  • Domain controller

Functional Block Diagram

Block Diagram - Texas Instruments LP8764-Q1 20A Buck Converters

Related Development Tool

Texas Instruments LP8764x-Q1EVM Evaluation Modules

Used to test, demo, debug and configure one or more LP8764-Q1 power management ICs.

Learn MoreTexas Instruments LP8764x-Q1EVM Evaluation Modules hakkında View ProductsTexas Instruments LP8764x-Q1EVM Evaluation Modules ile ilgili
Yayınlandı: 2022-10-24 | Güncellenmiş: 2025-01-26