Multipurpose Three-Phase Brushless DC Predriver, Developed in Compliance with ISO 26262

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Overview

The LV8968BB is a multipurpose three-phase BLDC predriver for automotive applications and developed in compliance with ISO 26262.  This 3−phase peripheral predriver offers a BEMF (Back ElectroMotive Force) output and the wide operating voltage range and AEC−Q100 qualification make this device ideal for automotive applications. Six gate drivers provide 400 mA (typ) gate current to external power bridges allowing the use of low resistance power FETs as well as logic level FETs. All FETs are protected against overcurrent, short−circuit, overtemperature and gate undervoltage. A multitude of protection and monitoring features make this device suitable for applications with functional safety (FuSa) requirements. Three independent low−side source pins allow multiple shunt measurement to accomodate external FOC (Field Oriented Control) options. 
The device also includes a programmable linear regulator, a fast current sense amplifier and a window watchdog for microcontroller and FOC support. The SPI interface allows for real time parameter setup and diagnostics. Critical system parameters can be programmed into nonvolatile OTP memory. 
Junction temperature tolerance up to 175°C and control via wide level WAKE and PWM signals make the LV8968BB an ideal motor predriver for a wide range of ISO 26262 related actuators, fans and pumps.

  • Automotive suspension system, park brake actuator, transmission pump, steering pump, vacuum pump, battery pack cooling, sliding door, lift gate, ...
  • Robot and cobot, automated valve, ...
  • e-step, drone, ...
  • oven, washing machine, boiler, automated shutters, ...
  • Automotive FuSa (Functional Safety) related actuators, pumps and fans
  • industrial equipment, factory and warehouse automation, ...
  • light e-mobility and motive power
  • white goods, domotica and home automation
  • Full Drive Power from 8 V to 28 V Supply Voltage with TransientTolerance from 4.5 V to 40 V
  • Extended Voltage Range from 6 V to 33 V Using Logic Level Mode
  • Up to 30 kHz Motor PWM with Individual Six Gate Control orDrive−3 Mode with Integrated Programmable Dead Time
  • Extensive System Protection Features Including:
    ♦ Drain−Source Short Detection for External FET
    ♦ Overcurrent Shutoff
    ♦ Low Gate Voltage Warning
    ♦ Overtemperature Warning and Shutoff
    ♦ Over / Under Voltage Protection
  • Safety Design ASIL B
  • Nonvolatile (OTP) Memory for Storing Critical System Parameters
  • 5 V / 3.3 V Linear Regulator for External Loads up to 50 mA
  • SPI Interface for Parameter Setup and Diagnostic Access, DynamicAccess to Dead Time, Amplifier Gain, and Short Circuit Levels
  • Wide Voltage Enable Line and PWM Interface
  • Integrated Window Watchdog Timer Function
  • AEC−Q100 Qualified and PPAP Capable
  • Thermally Efficient Exposed Die 48 Pin SQFP Package for TransientOperation Up to 175°C

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LV8968BBUWR2G

Active

Pb

A

H

P

SQFP-48K

3

260

REEL

2500

Y

3

6

33

~NA~

~NA~

~NA~

0.8

SPI

$4.6537

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