Motor Drivers, Brushless | LV8907UW

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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LV8907UWR2G

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CAD Model

Pb

A

H

P

SQFP-48K

131AN

3

260

REEL

2500

Y

3

5.5

20

~NA~

~NA~

~NA~

0.8

PWM

SPI

$10.0

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Reliability Data

Die Related Summary Data

Device: LV8907UWR2G

Equivalent to wafer fab process: I3T

Product Technology

Product Technology

Equivalent Device-Hours

MTBF/MTTF in Hours

FITS

I3T

4

4350769675

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Re-calculate Data

Data is based on the following assumptions.

Note: The temperature and confidence level may be adjusted to your requirements.

Disclaimer: A reliability FIT rate calculated using this tool shall not be used for any functional safety purpose. In case a raw FIT rate needs to be estimated for a component which is targeted to be used in a safety critical application (i.e. compliant to ISO 26262 standard) it should be calculated according to generic safety standards (IEC62380, IEC61709, SN29500, FIDES, etc.)

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