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LP873220-Q1

AKTIV

Zweifache Abwärtswandler (Bucks) für die Automobilindustrie, 2 A, & Zweifach-Linearregler für J6-Ein

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LP873220-Q1

AKTIV
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Produktdetails

Regulated outputs (#) 4 Configurability Software configurable Vin (min) (V) 2.8 Vin (max) (V) 5.5 Vout (min) (V) 0.7 Vout (max) (V) 3.36 Iout (max) (A) 2 Features Enable pin, I2C control, Power good, Power sequencing, Spread-Spectrum Clock (SSC) Generation, Thermal shutdown, UVLO adjustable Step-up DC/DC converter 0 Step-down DC/DC converter 2 Step-down DC/DC controller 0 Step-up DC/DC controller 0 LDO 2 Iq (typ) (mA) 0.009 Rating Automotive Switching frequency (max) (kHz) 2200 Operating temperature range (°C) -40 to 125 Processor supplier Texas Instruments Processor name Jacinto DRA7x Shutdown current (ISD) (typ) (µA) 9 Switching frequency (typ) (kHz) 2000 Product type Processor and FPGA
Regulated outputs (#) 4 Configurability Software configurable Vin (min) (V) 2.8 Vin (max) (V) 5.5 Vout (min) (V) 0.7 Vout (max) (V) 3.36 Iout (max) (A) 2 Features Enable pin, I2C control, Power good, Power sequencing, Spread-Spectrum Clock (SSC) Generation, Thermal shutdown, UVLO adjustable Step-up DC/DC converter 0 Step-down DC/DC converter 2 Step-down DC/DC controller 0 Step-up DC/DC controller 0 LDO 2 Iq (typ) (mA) 0.009 Rating Automotive Switching frequency (max) (kHz) 2200 Operating temperature range (°C) -40 to 125 Processor supplier Texas Instruments Processor name Jacinto DRA7x Shutdown current (ISD) (typ) (µA) 9 Switching frequency (typ) (kHz) 2000 Product type Processor and FPGA
VQFN (RHD) 28 25 mm² 5 x 5
  • AEC-Q100 qualified with the following results:
    • Device temperature grade 1: –40°C to +125°C ambient operating temperature
  • Input voltage: 2.8 V to 5.5 V
  • Two high-efficiency step-down DC/DC converters:
    • Output voltage: 0.7 V to 3.36 V
    • Maximum output current 2 A
    • Programmable output-voltage slew rate from 0.5 mV/µs to 10 mV/µs
    • 2-MHz switching frequency
    • Spread-spectrum mode and phase interleaving for EMI reduction
  • Two linear regulators:
    • Input voltage: 2.5 V to 5.5 V
    • Output voltage: 0.8 V to 3.3 V
    • Maximum output current 300 mA
  • Configurable general-purpose output signals (GPO, GPO2)
  • Interrupt function with programmable masking
  • Programmable power-good signal (PGOOD)
  • Output short-circuit and overload protection
  • Overtemperature warning and protection
  • Overvoltage protection (OVP) and undervoltage lockout (UVLO)
  • 28-pin, 5-mm × 5-mm VQFN package with wettable flanks
  • AEC-Q100 qualified with the following results:
    • Device temperature grade 1: –40°C to +125°C ambient operating temperature
  • Input voltage: 2.8 V to 5.5 V
  • Two high-efficiency step-down DC/DC converters:
    • Output voltage: 0.7 V to 3.36 V
    • Maximum output current 2 A
    • Programmable output-voltage slew rate from 0.5 mV/µs to 10 mV/µs
    • 2-MHz switching frequency
    • Spread-spectrum mode and phase interleaving for EMI reduction
  • Two linear regulators:
    • Input voltage: 2.5 V to 5.5 V
    • Output voltage: 0.8 V to 3.3 V
    • Maximum output current 300 mA
  • Configurable general-purpose output signals (GPO, GPO2)
  • Interrupt function with programmable masking
  • Programmable power-good signal (PGOOD)
  • Output short-circuit and overload protection
  • Overtemperature warning and protection
  • Overvoltage protection (OVP) and undervoltage lockout (UVLO)
  • 28-pin, 5-mm × 5-mm VQFN package with wettable flanks

The LP873220-Q1 is designed to meet the power management requirements of the latest processors and platforms in automotive camera and radar applications. The device has two step-down DC/DC converters, two linear regulators, and two general-purpose digital-output signals. The device is controlled by an I2C-compatible serial interface and by an enable signal.

The automatic PWM/PFM (AUTO mode) operation gives high efficiency over a wide output-current range. The LP873220-Q1 supports remote voltage sensing to compensate IR drop between the regulator output and the point-of-load (POL), thus improving the accuracy of the output voltage. In addition, the switching clock can be forced to PWM mode and also synchronized to an external clock to minimize the disturbances.

The LP873220-Q1 device also supports programmable start-up and shutdown delays and sequences including GPO signals synchronized to the enable signal. During start-up and voltage change, the device controls the output slew rate to minimize output voltage overshoot and the in-rush current.

The LP873220-Q1 is designed to meet the power management requirements of the latest processors and platforms in automotive camera and radar applications. The device has two step-down DC/DC converters, two linear regulators, and two general-purpose digital-output signals. The device is controlled by an I2C-compatible serial interface and by an enable signal.

The automatic PWM/PFM (AUTO mode) operation gives high efficiency over a wide output-current range. The LP873220-Q1 supports remote voltage sensing to compensate IR drop between the regulator output and the point-of-load (POL), thus improving the accuracy of the output voltage. In addition, the switching clock can be forced to PWM mode and also synchronized to an external clock to minimize the disturbances.

The LP873220-Q1 device also supports programmable start-up and shutdown delays and sequences including GPO signals synchronized to the enable signal. During start-up and voltage change, the device controls the output slew rate to minimize output voltage overshoot and the in-rush current.
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Technische Dokumentation

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Typ Titel Datum
* Data sheet LP873220-Q1 Dual High-Current Buck Converter and Dual Linear Regulator datasheet (Rev. A) PDF | HTML 04 Jun 2021
Application brief The Benefits of FlexPower PMIC Devices (Rev. B) PDF | HTML 23 Nov 2020
User guide LP8733-Q1 and LP8732-Q1 User’s Guide to Power DRA71x, DRA79x, and TDA2E-17 (Rev. A) 10 Jul 2018

Design und Entwicklung

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Evaluierungsplatine

LP87322Q1EVM — LP873220-Q1 Dual-Hochstrom-Abwärtswandler und Dual-Linearregler – Evaluierungsmodul

The LP87322Q1EVM demonstrates the integrated circuit LP873220-Q1 from Texas Instruments.

The LP873220-Q1 has two high-performance step-down converters and two LDOs, designed to meet the power management requirements of the latest applications processors in automotive applications. The LP873220-Q1 is (...)

Benutzerhandbuch: PDF
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Simulationsmodell

LP87322-Q1 PSpice Transient Model (Rev. A)

SNVMB17A.ZIP (213 KB) - PSpice Model
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Berechnungstool

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Referenzdesigns

TIDA-01425 — Eigenständiges Gateway-Referenzdesign mit Ethernet und CAN für die Automobilindustrie

The TIDA-01425 is a subsystem reference design for automotive gateways focused on increasing bandwidth and processing power in gateway applications. The design implements Ethernet physical layer transceivers (PHYs) for increased bandwidth along with an automotive processor for greater processing (...)
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Schaltplan: PDF
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