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LP8764-Q1

ACTIVE

4 5-A/20-A multiphase buck converters PMIC with functional safety features for automotive SoCs

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Data sheet
Errata

LP8764-Q1

ACTIVE
Data sheet Order now

Product details

Regulated outputs (#) 4 Vin (Min) (V) 2.8 Vin (Max) (V) 5.5 Iout (Max) (A) 20 Rating Automotive LDO 0 Iq (Typ) (mA) 16 Features Watchdog, Error Signal Monitor, Multiphase, SPI, I2C, SPMI, Voltage Monitoring, PGOOD, Thermal Monitor Processor name Jacinto DRA8x, Jacinto TDA4x Processor supplier Texas Instruments Shutdown current (ISD) (Typ) (uA) 1 Switching frequency (Typ) (kHz) 4400 Configurability Factory programmable, Software configurable, User programmable
Regulated outputs (#) 4 Vin (Min) (V) 2.8 Vin (Max) (V) 5.5 Iout (Max) (A) 20 Rating Automotive LDO 0 Iq (Typ) (mA) 16 Features Watchdog, Error Signal Monitor, Multiphase, SPI, I2C, SPMI, Voltage Monitoring, PGOOD, Thermal Monitor Processor name Jacinto DRA8x, Jacinto TDA4x Processor supplier Texas Instruments Shutdown current (ISD) (Typ) (uA) 1 Switching frequency (Typ) (kHz) 4400 Configurability Factory programmable, Software configurable, User programmable
  • AEC-Q100 Qualified with the following results:
    • Input voltage: 2.8 V to 5.5 V
    • 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 available to aid ISO 26262 system design up to ASIL-D
    • Documentation available to aid 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 high temperature warning and thermal shutdown
    • Bit-integrity (CRC) error detection on configuration registers and non-volatile memory
  • 4 high-efficiency step-down DC/DC converters:
    • Output voltage: 0.3 V to 3.34 V (0.3 V to 1.9 V for multi-phase outputs)
    • Maximum output current: 5 A per phase, up to 20 A with 4-phase configuration
    • Programmable output voltage slew-rate: 0.5 mV/µs to 33 mV/µs
    • Switching frequency: 2.2 MHz or 4.4 MHz
  • 10 configurable general purpose I/O (GPIO)
  • SPMI interface for multi-PMIC synchronization
  • Input overvoltage monitor (OVP) and undervoltage lockout (UVLO)

.

.
  • AEC-Q100 Qualified with the following results:
    • Input voltage: 2.8 V to 5.5 V
    • 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 available to aid ISO 26262 system design up to ASIL-D
    • Documentation available to aid 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 high temperature warning and thermal shutdown
    • Bit-integrity (CRC) error detection on configuration registers and non-volatile memory
  • 4 high-efficiency step-down DC/DC converters:
    • Output voltage: 0.3 V to 3.34 V (0.3 V to 1.9 V for multi-phase outputs)
    • Maximum output current: 5 A per phase, up to 20 A with 4-phase configuration
    • Programmable output voltage slew-rate: 0.5 mV/µs to 33 mV/µs
    • Switching frequency: 2.2 MHz or 4.4 MHz
  • 10 configurable general purpose I/O (GPIO)
  • SPMI interface for multi-PMIC synchronization
  • Input overvoltage monitor (OVP) and undervoltage lockout (UVLO)

.

.

The LP8764-Q1 device is designed to meet the power management requirements of the latest processors and platforms in various safety-relevant automotive and industrial applications. The device has four step-down DC/DC converter cores, that are configurable for five different phase configurations from one 4-phase output to four 1-phase outputs. The device settings can be changed by I2C-compatible serial interface or by a SPI serial interface.

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

The LP8764-Q1 device is designed to meet the power management requirements of the latest processors and platforms in various safety-relevant automotive and industrial applications. The device has four step-down DC/DC converter cores, that are configurable for five different phase configurations from one 4-phase output to four 1-phase outputs. The device settings can be changed by I2C-compatible serial interface or by a SPI serial interface.

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

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Type Title Date
* Data sheet LP8764-Q1 Four-Phase, 20-A Buck Converter With Integrated Switches datasheet PDF | HTML 08 Mar 2022
* Errata LP8764-Q1 Silicon Revision 2.0 Errata PDF | HTML 24 Feb 2022
User guide Scalable PMIC's GUI User’s Guide (Rev. B) PDF | HTML 27 Jun 2022
Certificate LP8764Q1EVM-SKT EU RoHS Declaration of Conformity (DoC) 06 Jun 2022
User guide LP8764x-Q1 Evaluation Module User's Guide (Rev. A) PDF | HTML 03 Feb 2022
User guide TPS65941213-Q1 and LP876411B4-Q1 PMIC User Guide for J721E, PDN-1A PDF | HTML 02 Feb 2022
Functional safety information Leverage Jacinto 7 Processors Functional Safety Features for Automotive Designs (Rev. A) PDF | HTML 13 Oct 2021
White paper 運用 Jacinto™ 7 處理器的汽車設計功能安全特性 01 Mar 2020
White paper 오토모티브 설계 시 Jacinto™ 7 프로세서의 기능적 안전성 활용하기 01 Mar 2020

Design & development

For additional terms or required resources, click any title below to view the detail page where available.

Evaluation board

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Evaluation board

LP87642Q1EVM — LP87642-Q1 evaluation module for four-phase one output functional safety compliant buck converter

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document-pdfAcrobat User guide
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Evaluation board

LP87644Q1EVM — Evaluation module for 1+1+1+1 phase four output functional safety compliant buck converter

The LP87644Q1EVM board can be used to test, demo, debug and configure one or more LP8764-Q1 power managements ICs for automotive and industrial applications. The device on board is LP876441E4RQKRQ1 which has 1+1+1+1-phase configuration for 4 different output voltage rails. The boards can be (...)
document-pdfAcrobat User guide
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Simulation model

LP8764-Q1 PSpice Transient Model (Rev. A) LP8764-Q1 PSpice Transient Model (Rev. A)

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Simulation model

LP8764-Q1 SIMPLIS AC and Transient model (Rev. A) LP8764-Q1 SIMPLIS AC and Transient model (Rev. A)

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Calculation tool

PEET-GUI PMIC Efficiency Estimator Tool (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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