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LP87524B-Q1

ACTIVE

Multiphase 4MHz, 4A/1.8V + 2.5A/2.3V + 1.5A/3.3V + 1.5A/1.2V buck converters for AWR and IWR MMICs

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Data sheet

LP87524B-Q1

ACTIVE
Data sheet Order now

Product details

Regulated outputs (#) 4 Vin (Min) (V) 2.8 Vin (Max) (V) 5.5 Iout (Max) (A) 3 Rating Automotive LDO 0 Iq (Typ) (mA) 0.0067 Features Diagnostics, Dynamic Voltage Scaling, Enable, I2C Control, Over Current Protection, Power Good, Power Sequencing, Spread-Spectrum Clock (SSC) Generation, Thermal Shutdown, UVLO Fixed Processor name mmWave AWR Processor supplier Texas Instruments Shutdown current (ISD) (Typ) (uA) 1.4 Switching frequency (Typ) (kHz) 4000 Configurability Factory programmable, Software configurable
Regulated outputs (#) 4 Vin (Min) (V) 2.8 Vin (Max) (V) 5.5 Iout (Max) (A) 3 Rating Automotive LDO 0 Iq (Typ) (mA) 0.0067 Features Diagnostics, Dynamic Voltage Scaling, Enable, I2C Control, Over Current Protection, Power Good, Power Sequencing, Spread-Spectrum Clock (SSC) Generation, Thermal Shutdown, UVLO Fixed Processor name mmWave AWR Processor supplier Texas Instruments Shutdown current (ISD) (Typ) (uA) 1.4 Switching frequency (Typ) (kHz) 4000 Configurability Factory programmable, Software configurable
VQFN-HR (RNF) 26 18 mm² 4 x 4.5
  • Qualified for Automotive Applications
  • 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
  • Output Voltage: 0.6 V to 3.36 V
  • Four High-Efficiency Step-Down DC-DC Converter Cores:
    • Total Output Current Up To 10 A
    • Output Voltage Slew-Rate 3.8 mV/µs
  • 4-MHz Switching Frequency
  • Spread-Spectrum Mode and Phase Interleaving
  • Configurable General Purpose I/O (GPIOs)
  • I2C-Compatible Interface which Supports Standard (100 kHz), Fast (400 kHz), Fast+ (1 MHz), and High-Speed (3.4 MHz) Modes
  • 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)
  • Qualified for Automotive Applications
  • 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
  • Output Voltage: 0.6 V to 3.36 V
  • Four High-Efficiency Step-Down DC-DC Converter Cores:
    • Total Output Current Up To 10 A
    • Output Voltage Slew-Rate 3.8 mV/µs
  • 4-MHz Switching Frequency
  • Spread-Spectrum Mode and Phase Interleaving
  • Configurable General Purpose I/O (GPIOs)
  • I2C-Compatible Interface which Supports Standard (100 kHz), Fast (400 kHz), Fast+ (1 MHz), and High-Speed (3.4 MHz) Modes
  • 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)

The LP87524B/J/P-Q1 is designed to meet the power management requirements of the latest processors and platforms in various automotive power applications. The device contains four step-down DC-DC converter cores, which are configured as 4 single phase outputs. The device is controlled by an I2C-compatible serial interface and by enable signals.

The automatic PFM/PWM (AUTO mode) operation maximizes efficiency over a wide output-current range. The LP87524B/J/P-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 LP87524B/J/P-Q1 device supports load-current measurement without the addition of external current-sense resistors. In addition, the LP87524B/J/P-Q1 supports programmable start-up and shutdown delays and sequences synchronized to enable signals. The sequences can also include GPIO signals to control external regulators, load switches and processor reset. During start-up and voltage change, the device controls the output slew rate to minimize output voltage overshoot and the in-rush current.

The LP87524B/J/P-Q1 is designed to meet the power management requirements of the latest processors and platforms in various automotive power applications. The device contains four step-down DC-DC converter cores, which are configured as 4 single phase outputs. The device is controlled by an I2C-compatible serial interface and by enable signals.

The automatic PFM/PWM (AUTO mode) operation maximizes efficiency over a wide output-current range. The LP87524B/J/P-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 LP87524B/J/P-Q1 device supports load-current measurement without the addition of external current-sense resistors. In addition, the LP87524B/J/P-Q1 supports programmable start-up and shutdown delays and sequences synchronized to enable signals. The sequences can also include GPIO signals to control external regulators, load switches and processor reset. 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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LP87524P-Q1 ACTIVE Automotive multiphase 4MHz, 3A/1.0V + 3A/1.0V + 2.5A/1.8V + 1.5A/1.2V buck converters for AWR MMICs This product is for cascaded radar designs.
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Technical documentation

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Type Title Date
* Data sheet LP87524B/J/P-Q1 Four 4-MHz Buck Converters for AWR and IWR MMICs datasheet (Rev. B) PDF | HTML 06 Dec 2018
User guide LP87524x-Q1 Technical Reference Manual (Rev. A) PDF | HTML 10 May 2021
Application note The Benefits of FlexPower PMIC Devices (Rev. B) PDF | HTML 23 Nov 2020
Application note Power Management Optimizations - Low Cost LC Filter Solution (Rev. A) PDF | HTML 11 Nov 2020
Technical article Let’s break it down: how buck converters make your power supply more flexible 13 Dec 2017
Application note XWR1xxx Power Management Optimizations - Low Cost LC Filter Solution 16 Oct 2017

Design & development

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Evaluation board

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Evaluation board

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Evaluation board

IWR1443BOOST — IWR1443 single-chip 76-GHz to 81-GHz mmWave sensor evaluation module

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Evaluation board

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Evaluation board

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Simulation model

LP87524B PSpice Transient Model

SNVMB85.ZIP (364 KB) - PSpice Model
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Simulation model

LP87524B-Q1 SIMPLIS Transient

SNVMBG0.ZIP (274 KB) - SIMPLIS Model
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Reference designs

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Reference designs

TIDEP-0092 — Short-range radar (SRR) reference design

The TIDEP-0092 reference design provides a foundation for short-range radar (SRR) applications using the AWR1642 evaluation module (EVM). This design allows the estimation and tracking of the position (in the azimuthal plane) and velocity of objects in its field of view up to 80 m,  travelling (...)
Design guide: PDF
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Reference designs

TIDEP-0090 — Traffic Monitoring Object Detection and Tracking Reference Design Using mmWave Radar Sensor

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TIDEP-01000 — People Counting and Tracking Reference Design Using mmWave Radar Sensor

This reference design demonstrates the use of IWR6843, which is a single-chip mmWave radar sensor with integrated DSP for an indoor and outdoor people counting application. This reference design uses the IWR6843ISK evaluation module (EVM) and integrates a complete radar processing chain onto the (...)
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Reference designs

TIDEP-0091 — Power optimization for 77GHz-level transmitter reference design

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Reference designs

TIDEP-0094 — 80m-Range Object Detection Reference Design With Integrated Single-Chip mmWave Sensor

TIDEP-0094 provides a foundation to evaluate object detection using the IWR1642 evaluation module (EVM). This reference design integrates a complete radar processing chain onto the IWR1642 device to enable the estimation of the position (in the azimuthal plane) and the velocity of (...)
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TIDEP-01011 — Automated parking system reference design using 77-GHz mmWave sensor

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Reference designs

TIDEP-0104 — Obstacle detection reference design using 77-GHz mmWave sensor

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