Sensorless Three-Phase Brushless DC Motor Controller and Predriver, Automotive

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Overview

The LV8907 is a high performance, sensorless three-phase BLDC motor controller with predrivers for automotive applications.  An integrated two-stage charge pump provides gate current for a wide range of ultra low RDS(ON) NFETs. The device offers a rich set of system protection and diagnostic functions such as overcurrent, overvoltage, short-circuit, undervoltage, overtemperature and many more. It supports open-loop as well as closed-loop speed control with user configurable startup, speed setting and proportional/integral (PI) control coefficients, making it suitable for a wide range of motor and load combinations. With a built-in linear regulator for powering external circuits, a watchdog timer, and a Local Interconnect Network (LIN) transceiver, the LV8907 offers a very small system solution. The LV8907 stores system parameters in embedded one-time programmable (OTP) non-volatile memory in addition to RAM system memory.  An SPI interface is provided for parameter setting and monitoring the system status. With the operating junction temperature tolerance up to 175°C and electrically LIN compatible control signals (PWM and Enable), the LV8907 is an ideal solution for stand-alone BLDC motor control systems.

  • Pumps (fuel, oil, coolant, hydraulic controls, vacuum, ...)
  • Fans and Blowers (HVAC, radiator, condenser, battery, inverter, charger, ...)
  • Compressors
  • Cars, Boats, Trains,...
  • Building Automation (ventilation, heating system, solar boiler, automated doors & shutters, ...)
  • Industrial Equipment
  • White Goods
  • Operating junction temperature up to 175°C
  • Operating voltage range from 5.5 V to 20 V with tolerance from 4.5 V to 40 V
  • Embedded proprietary sensorless commutation control
  • Built-in LIN transceiver and Watchdog timer
  • SPI interface for real-time parameterization and diagnostic
  • Various system protection features including:
    ♦ Shoot through protection using configurable dead time
    ♦ Drain-source short detection
    ♦ Cycle-by-cycle current limit and overcurrent shutdown
    ♦ Overvoltage- and undervoltage shutdown
    ♦ Overtemperature warning and -shutdown
    ♦ Input PWM fault detection
  • Configurable speed setting and PI control coefficients
  • Supports both open-loop and closed-loop speed control
  • Integrated 5 V/3.3 V regulator output for external circuit
  • Integrated predrivers for driving six N-MOSFETs
  • Two-stage charge pump for continuous 100% duty cycle operation
  • AEC−Q100 Qualified and PPAP Capable

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Package Type

Case Outline

MSL Type

MSL Temp (°C)

Container Type

Container Qty.

ON Target

Phase

VM Min (V)

VM Max (V)

VCC Min (V)

VCC Max (V)

IO Max (A)

IO Peak Max (A)

Control Type

Reference Price

LV8907UWR2G

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Active

CAD Model

Pb

A

H

P

SQFP-48K

3

260

REEL

2500

Y

3

5.5

20

~NA~

~NA~

~NA~

0.8

SPI

$10.0

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