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LP87743-Q1

ACTIVO

PMIC con tres convertidores buck de bajo ruido de 3 A para MMIC de radar para automoción

Detalles del producto

Processor supplier Texas Instruments Processor name mmWave AWR, mmWave IWR Regulated outputs (#) 3 Step-down DC/DC converter 3 Vin (min) (V) 3 Vin (max) (V) 4 Vout (min) (V) 0.9 Vout (max) (V) 1.8 Iout (max) (A) 3 TI functional safety category Functional Safety-Compliant Configurability Factory programmable, Software configurable 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 Product type Radar sensor
Processor supplier Texas Instruments Processor name mmWave AWR, mmWave IWR Regulated outputs (#) 3 Step-down DC/DC converter 3 Vin (min) (V) 3 Vin (max) (V) 4 Vout (min) (V) 0.9 Vout (max) (V) 1.8 Iout (max) (A) 3 TI functional safety category Functional Safety-Compliant Configurability Factory programmable, Software configurable 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 Product type Radar sensor
VQFN-HR (RXV) 28 22.5 mm² 5 x 4.5
  • 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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Documentación técnica

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* Data sheet LP8774x-Q1 Three Buck Converters and 5-V Boost for AWR and IWR Radar Sensors datasheet (Rev. B) PDF | HTML 24 jun 2024

Diseño y desarrollo

Para conocer los términos adicionales o los recursos necesarios, haga clic en cualquier título de abajo para ver la página de detalles cuando esté disponible.

Placa de evaluación

LP877451Q1EVM — Módulo de evaluación LP8774x-Q1 del PMIC de configuración de bajo nivel de ruido con reductor triple

El dispositivo LP8774x-Q1 está diseñado para satisfacer los requisitos de administración de potencia de los circuitos integrados monolíticos de microondas (MMIC) para radares AWR e IWR en múltiples aplicaciones de radar automotriz e industrial. El dispositivo tiene tres convertidores de CC/CC (...)

Guía del usuario: PDF | HTML
Modelo de simulación

LP87745-Q1 BUCK PSpice Transient Model

SNVMCA5.ZIP (46 KB) - PSpice Model
Modelo de simulación

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

SNVMC81C.ZIP (65 KB) - SIMPLIS Model
Herramienta de cálculo

PEET-GUI — Herramienta de estimación de la eficiencia de los PMIC (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 (...)
Diseños de referencia

TIDEP-01030 — Diseño de referencia de diagnóstico y supervisión de mmWave para radares de ángulo de alta gama

Este diseño de referencia presenta una funcionalidad de supervisión independiente incorporada en los sensores de radar mmWave que mejora la eficiencia del sistema al minimizar la carga de procesamiento en el servidor. Este diseño utiliza una biblioteca de diagnóstico de seguridad (SDL) para (...)
Design guide: PDF
Diseños de referencia

TIDEP-01027 — Diseño de referencia de radar de esquina de alta gama

El diseño de referencia TIDA-01027 proporciona una base para que las aplicaciones de radar de esquina cumplan los requisitos de seguridad NCAP R79 mediante el módulo de evaluación (EVM) AWR2944. El diseño permite que los usuarios calculen y rastreen la posición (en el plano azimutal) y la velocidad (...)
Design guide: PDF
Esquema: PDF
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Pedidos y calidad

Información incluida:
  • RoHS
  • REACH
  • Marcado del dispositivo
  • Acabado de plomo/material de la bola
  • Clasificación de nivel de sensibilidad a la humedad (MSL) / reflujo máximo
  • Estimaciones de tiempo medio entre fallas (MTBF)/fallas en el tiempo (FIT)
  • Contenido del material
  • Resumen de calificaciones
  • Monitoreo continuo de confiabilidad
Información incluida:
  • Lugar de fabricación
  • Lugar de ensamblaje

Los productos recomendados pueden tener parámetros, módulos de evaluación o diseños de referencia relacionados con este producto de TI.

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