LP8764-Q1

ACTIVE

4 5-A/20-A multiphase buck converters PMIC for automotive SoCs

Product details

Regulated outputs (#) 4 Configurability Factory programmable, Software configurable, User programmable Vin (min) (V) 2.8 Vin (max) (V) 5.5 Vout (min) (V) 0.3 Vout (max) (V) 3.34 Iout (max) (A) 20 Features Error signal monitor, I2C, Multiphase, Power good, SPI, SPMI, Thermal monitor, Voltage monitoring, Watchdog TI functional safety category Functional Safety-Compliant Step-up DC/DC converter 0 Step-down DC/DC converter 4 Step-down DC/DC controller 0 Step-up DC/DC controller 0 LDO 0 Iq (typ) (mA) 16 Rating Automotive Switching frequency (max) (kHz) 4800 Operating temperature range (°C) -40 to 125 Processor supplier Texas Instruments Processor name Jacinto DRA8x, Jacinto TDA4x Shutdown current (ISD) (typ) (µA) 1 Switching frequency (typ) (kHz) 4400 Product type Radar sensor
Regulated outputs (#) 4 Configurability Factory programmable, Software configurable, User programmable Vin (min) (V) 2.8 Vin (max) (V) 5.5 Vout (min) (V) 0.3 Vout (max) (V) 3.34 Iout (max) (A) 20 Features Error signal monitor, I2C, Multiphase, Power good, SPI, SPMI, Thermal monitor, Voltage monitoring, Watchdog TI functional safety category Functional Safety-Compliant Step-up DC/DC converter 0 Step-down DC/DC converter 4 Step-down DC/DC controller 0 Step-up DC/DC controller 0 LDO 0 Iq (typ) (mA) 16 Rating Automotive Switching frequency (max) (kHz) 4800 Operating temperature range (°C) -40 to 125 Processor supplier Texas Instruments Processor name Jacinto DRA8x, Jacinto TDA4x Shutdown current (ISD) (typ) (µA) 1 Switching frequency (typ) (kHz) 4400 Product type Radar sensor
VQFN-HR (RQK) 32 27.5 mm² 5.5 x 5
  • 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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Evaluation board

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User guide: PDF | HTML
Evaluation board

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

The LP87642Q1EVM 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 LP876411E2RQRQ1 which has 4-phase 2.2 MHz configuration for one high current multiphase rail. The EVM boards can be (...)

User guide: PDF | HTML
Not available on TI.com
Evaluation board

LP87644Q1EVM — LP87644-Q1 evaluation module for four-output 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 (...)
User guide: PDF | HTML
Not available on TI.com
Simulation model

LP8764-Q1 PSpice Transient Model (Rev. A)

SNVMC60A.ZIP (576 KB) - PSpice Model
Simulation model

LP8764-Q1 PSpice Transient Model for Multiphase Buck

SNVMCA7.ZIP (579 KB) - PSpice Model
Simulation model

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

SNVMC62A.ZIP (374 KB) - SIMPLIS Model
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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