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Microchip Technology MCP8025A Three-Phase BLDC Motor Gate Drivers

Microchip Technology MCP8025A Three-phase Brushless DC (BLDC) Motor Gate Drivers with key-off sleep mode are power modules designed for motor current monitoring. These gate drivers integrate key-off sleep mode, a LIN transceiver, a buck voltage regulator, an over-temperature sensor, and an operational amplifier. The MCP8025A gate drivers consist of a phase comparator and multiplexer, allowing hardware communication detection. The neutral simulator helps with communication detection without a neutral tap in the motor.

The MCP8025A DC motor gate drivers feature automatic thermal shutdown, shoot-through protection, independent input control, and dominant state timeout. These gate drivers implement a buck converter to deliver 750mW of power for powering a companion microcontroller. The MCP8025A gate drivers are available in 4-lead 5 x 5 QFN and 48-lead 7 x 7 TQFP packages and operate at -40°C to 150°C temperature range.

Features

  • Key-off sleep mode
  • LIN transceiver
  • Buck voltage regulator
  • Two LDO regulators
  • Power monitoring comparators
  • Over-temperature sensor
  • Zero-crossing detector
  • Neutral simulator
  • Comparator
  • Integrated operational amplifier
  • Dominate state time out
  • Supports baud rates up to 20K baud
  • Internal pull-up resistor and diode
  • Protected against ground shorts and loss of ground
  • Automatic thermal shutdown
  • Independent input control for high-side NMOS and low-side NMOS MOSFETs
  • Shoot-through protection
  • Overcurrent protection
  • Short circuit protection
  • Phase comparator with multiplexer

Specifications

  • 5µA sleep mode
  • <200µA standby mode
  • 0.5A @ 12V peak output current
  • 750mW adjustable output buck regulator
  • 6V to 19V operational voltage range
  • 4V buck regulator UVLO
  • Available in 40/QFN and 48/TQFP packages
  • 5.5V Undervoltage Lockout (UVLO)
  • 20V Overvoltage Lockout (OVLO)
  • 48V transient voltage tolerance
  • SAE J2602 compliant
  • LIN bus specifications 1.3 and 2.2 compliant
  • -40°C to 150°C operating temperature range
Published: 2018-12-07 | Updated: 2023-01-04