LP87562-Q1

ACTIVE

Automotive multiphase 12A + 4A buck converter with integrated switches

Product details

Regulated outputs (#) 2 Configurability Factory programmable, Software configurable Vin (min) (V) 2.8 Vin (max) (V) 5.5 Vout (min) (V) 0.6 Vout (max) (V) 3.36 Iout (max) (A) 12 Features Diagnostics, Dynamic voltage scaling, Enable, Enable pin, I2C control, Overcurrent protection, Power good, Power sequencing, Power supply and system monitoring, Spread-Spectrum Clock (SSC) Generation, Thermal shutdown, UVLO fixed 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 0 Iq (typ) (mA) 0.0067 Rating Automotive Switching frequency (max) (kHz) 2200 Operating temperature range (°C) -40 to 125 Processor supplier Generic Processor name Generic Shutdown current (ISD) (typ) (µA) 1.4 Switching frequency (typ) (kHz) 2000 Product type Processor and FPGA
Regulated outputs (#) 2 Configurability Factory programmable, Software configurable Vin (min) (V) 2.8 Vin (max) (V) 5.5 Vout (min) (V) 0.6 Vout (max) (V) 3.36 Iout (max) (A) 12 Features Diagnostics, Dynamic voltage scaling, Enable, Enable pin, I2C control, Overcurrent protection, Power good, Power sequencing, Power supply and system monitoring, Spread-Spectrum Clock (SSC) Generation, Thermal shutdown, UVLO fixed 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 0 Iq (typ) (mA) 0.0067 Rating Automotive Switching frequency (max) (kHz) 2200 Operating temperature range (°C) -40 to 125 Processor supplier Generic Processor name Generic Shutdown current (ISD) (typ) (µA) 1.4 Switching frequency (typ) (kHz) 2000 Product type Processor and FPGA
VQFN-HR (RNF) 26 18 mm² 4.5 x 4
  • Qualified for Automotive Applications
  • AEC-Q100 Qualified With the Following Results:
    • Device Temperature Grade 1: –40°C to +125°C Ambient Operating Temperature
    • Device HBM ESD Classification Level 2
    • Device CDM ESD Classification Level C4B
  • 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:
    • Maximum Output Current: 16 A (4 A per Phase)
    • Programmable Output Voltage Slew-Rate: 0.5 mV/µs to 10 mV/µs
  • Switching Frequency: 2 MHz
  • Spread-Spectrum Mode and Phase Interleaving
  • Configurable General Purpose I/O (GPIOs)
  • I2C-Compatible Interface That 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
    • Device HBM ESD Classification Level 2
    • Device CDM ESD Classification Level C4B
  • 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:
    • Maximum Output Current: 16 A (4 A per Phase)
    • Programmable Output Voltage Slew-Rate: 0.5 mV/µs to 10 mV/µs
  • Switching Frequency: 2 MHz
  • Spread-Spectrum Mode and Phase Interleaving
  • Configurable General Purpose I/O (GPIOs)
  • I2C-Compatible Interface That 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 LP8756x-Q1 device 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 a 4-phase output, 3-phase and 1-phase outputs, 2-phase and 2-phase outputs, one 2-phase and two 1-phase outputs, or four 1-phase outputs. The device is controlled by an I2C-compatible serial interface and by enable signals.

The automatic pulse-width-modulation (PWM) to pulsed-frequency-modulation (PFM) operation (AUTO mode), together with the automatic phase adding and phase shedding, maximizes efficiency over a wide output-current range. The LP8756x-Q1 supports remote differential-voltage sensing for multiphase outputs to compensate IR drop between the regulator output and the point-of-load (POL) improving the accuracy of the output voltage. The switching clock can be forced to PWM mode and also synchronized to an external clock to minimize the disturbances.

The LP8756x-Q1 device supports load-current measurement without the addition of external current-sense resistors. The device also supports programmable start-up and shutdown delays and sequences synchronized to enable signals. The sequences can 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 in-rush current.

The LP8756x-Q1 device 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 a 4-phase output, 3-phase and 1-phase outputs, 2-phase and 2-phase outputs, one 2-phase and two 1-phase outputs, or four 1-phase outputs. The device is controlled by an I2C-compatible serial interface and by enable signals.

The automatic pulse-width-modulation (PWM) to pulsed-frequency-modulation (PFM) operation (AUTO mode), together with the automatic phase adding and phase shedding, maximizes efficiency over a wide output-current range. The LP8756x-Q1 supports remote differential-voltage sensing for multiphase outputs to compensate IR drop between the regulator output and the point-of-load (POL) improving the accuracy of the output voltage. The switching clock can be forced to PWM mode and also synchronized to an external clock to minimize the disturbances.

The LP8756x-Q1 device supports load-current measurement without the addition of external current-sense resistors. The device also supports programmable start-up and shutdown delays and sequences synchronized to enable signals. The sequences can 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 in-rush current.

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Technical documentation

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Type Title Date
* Data sheet LP8756x-Q1 16-A Buck Converter With Integrated Switches datasheet PDF | HTML 29 Mar 2018
* User guide LP8756xQ1 Configuration Guide 11 Oct 2018
* EVM User's guide The LP8756xQ1EVM (SV601325) Evaluation Module (Rev. B) 13 Aug 2018
Application note Power Supply Design for Semidrive X9SP (X9HP Compatible) using LP8752-Q1 and LP8756-Q1 PDF | HTML 22 Jul 2024
User guide LP87562T-Q1 Technical Reference Manual PDF | HTML 15 May 2024
Application note Power Supply Design for Semidrive X9P/X9U PDF | HTML 19 May 2022
User guide LP87562S-Q1 Technical Reference Manual PDF | HTML 08 Mar 2022
User guide LP87562R-Q1 Technical Reference Manual PDF | HTML 02 Sep 2021
Application brief The Benefits of FlexPower PMIC Devices (Rev. B) PDF | HTML 23 Nov 2020
Application note How to Design Flexible Processor Power Systems Using PMICs (Rev. B) 27 Jan 2020
Application note Stability Considerations for LP8756x-Q1 and LP8752x-Q1 PDF | HTML 04 Jun 2019
User guide LP875620-Q1 Technical Reference Manual 29 Mar 2019
EVM User's guide LP8756x-Q1EVM (BMC031) Evaluation Module 09 Aug 2018

Design & development

Power-supply solutions

Explore solutions that include the LP87562-Q1. TI offers power-supply solutions for TI and non-TI systems on a chip (SoCs), processors, microcontrollers, sensors, and field-programmable gate arrays (FPGAs).

Evaluation board

LP87562Q1EVM — Dual Output 12-A + 4-A Buck Converters With Integrated Switches Evaluation Module

The LP87562Q1EVM demonstrates the integrated circuit LP87562-Q1 from Texas Instruments.

The LP87562-Q1 is a high-performance, multiphase step-down converter designed to meet the power management requirements of the latest applications processors in automotive applications. The device contains four (...)

User guide: PDF
Not available on TI.com
Simulation model

LP8756-Q1 and LP8752-Q1 SIMPLIS Model

SNVMBU8.ZIP (42 KB) - SIMPLIS Model
Simulation model

LP87562-Q1 PSpice Transient Model (Rev. A)

SNVMAZ8A.ZIP (311 KB) - PSpice 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 (...)
Schematic

LP8756x and LP8752x Design Checklist

SNVR480.ZIP (116 KB)
Package Pins CAD symbols, footprints & 3D models
VQFN-HR (RNF) 26 Ultra Librarian

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