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LP876242-Q1

ACTIVE

Automotive four 8.8-MHz buck converters for AWR and IWR MMICs

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Data sheet

LP876242-Q1

ACTIVE
Data sheet Order now

Product details

Regulated outputs (#) 4 Configurability Factory programmable, Software configurable Vin (min) (V) 3 Vin (max) (V) 5.5 Vout (min) (V) 0.9 Vout (max) (V) 1.9 Iout (max) (A) 4 Features GPIO, Overvoltage protection, SPMI, UVLO 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 1 Iq (typ) (mA) 0.033 Rating Automotive Switching frequency (max) (kHz) 9600 Operating temperature range (°C) -40 to 125 Processor supplier Texas Instruments Processor name mmWave AWR, mmWave IWR Shutdown current (ISD) (typ) (µA) 1 Switching frequency (typ) (kHz) 8800 Product type Radar sensor
Regulated outputs (#) 4 Configurability Factory programmable, Software configurable Vin (min) (V) 3 Vin (max) (V) 5.5 Vout (min) (V) 0.9 Vout (max) (V) 1.9 Iout (max) (A) 4 Features GPIO, Overvoltage protection, SPMI, UVLO 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 1 Iq (typ) (mA) 0.033 Rating Automotive Switching frequency (max) (kHz) 9600 Operating temperature range (°C) -40 to 125 Processor supplier Texas Instruments Processor name mmWave AWR, mmWave IWR Shutdown current (ISD) (typ) (µA) 1 Switching frequency (typ) (kHz) 8800 Product type Radar sensor
VQFN-HR (RQK) 32 27.5 mm² 5.5 x 5
  • AEC-Q100 Qualified with the following results:
    • Input voltage: 3.0 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: 0.9 V to 1.9 V
    • Maximum output current: 4/3/3/2 A
    • Programmable output voltage slew-rate: 0.5 mV/µs to 33 mV/µs
    • Switching frequency: 8.8 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: 3.0 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: 0.9 V to 1.9 V
    • Maximum output current: 4/3/3/2 A
    • Programmable output voltage slew-rate: 0.5 mV/µs to 33 mV/µs
    • Switching frequency: 8.8 MHz
  • 10 configurable general purpose I/O (GPIO)
  • SPMI interface for multi-PMIC synchronization
  • Input overvoltage monitor (OVP) and undervoltage lockout (UVLO)

.

.

The LP876242-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, generating four 1-phase outputs. The device settings can be changed by I2C-compatible serial interface or by a SPI serial interface.

The switching clock is 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 LP876242-Q1 device includes protection and diagnostic mechanisms such as register and interface CRC, short-circuit protection, thermal monitoring, and shutdown. The LP876242-Q1 device can notify the processor of these events through the interrupt handler, allowing the processor to take action in response.

The LP876242-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, generating four 1-phase outputs. The device settings can be changed by I2C-compatible serial interface or by a SPI serial interface.

The switching clock is 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 LP876242-Q1 device includes protection and diagnostic mechanisms such as register and interface CRC, short-circuit protection, thermal monitoring, and shutdown. The LP876242-Q1 device can notify the processor of these events through the interrupt handler, allowing the processor to take action in response.
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Technical documentation

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Type Title Date
* Data sheet LP876242-Q1 Four 8.8-MHz Buck Converters for AWR and IWR MMICs datasheet (Rev. A) PDF | HTML 23 Jun 2022
Certificate LP876242Q1EVM EU RoHS Declaration of Conformity (DoC) (Rev. A) 20 May 2022
User guide LP876242-Q1 Evaluation Module (Rev. A) PDF | HTML 09 May 2022

Design & development

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Evaluation board

LP876242Q1EVM — Automotive evaluation module 4A + 3A + 3A + 2A functional safety-compliant buck converters for radar

The LP876242Q1EVM board can be used to test, demo, debug and configure one or more LP876242-Q1 power managements ICs for automotive radar applications. The device on board is LP876242B0RQKRQ1 which has 1+1+1+1-phase configuration with 8.8-MHz switching frequency for 4 different output voltage rails

User guide: PDF | HTML
Not available on TI.com
Reference designs

TIDA-020047 — Two-device mmWave cascade reference design for automotive 4D imaging radar

This automotive radar reference design is a cascaded 76-GHz to 81-GHz radar sensor module. This includesa two-device cascaded array of AWR2243 devices and an AM2732R radar processor. In this cascaded radar configuration, a primary device distributes a 20-GHz local-oscillator (LO) signal to both (...)
Design guide: PDF
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VQFN-HR (RQK) 32 View options
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