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Texas Instruments MCF8329A/MCF8329A-Q1 Three-Phase BLDC Gate Drivers

Texas Instruments MCF8329A/MCF8329A-Q1 FOC Three-Phase BLDC Gate Drivers provide a single-chip, code-free sensorless FOC solution for applications driving brushless-DC motors (BLDC) or Permanent Magnet Synchronous motors (PMSM). The MCF8329A/MCF8329A-Q1 provides three half-bridge gate drivers. Each is capable of driving high-side and low-side N-channel power MOSFETs. The device uses a bootstrap circuit that generates the correct gate drive voltages using an internal charge pump. This feature enhances the high-side MOSFETs. A trickle charge pump is included to support a 100% duty cycle. The MCF8329A/MCF8329A-Q1 supports a wide input supply range of 4.5V to 60V and can operate from a single power supply.

The algorithm configuration can be stored in non-volatile EEPROM, which allows the device to operate stand-alone once it has been configured. Motor current is sensed using an integrated current-sensing amplifier supporting a single external shunt resistor. The Texas Instruments MCF8329A integrates many protection features to protect the device, system, and motor against fault events.

Features

  • AEC-Q100 qualified for automotive applications with a temperature grade-1 of -40°C ≤ TA ≤ 125°C (MCF8329A-Q1)
  • Three-phase BLDC gate driver with integrated sensorless motor control algorithm
    • Code-free single-shunt Field Oriented Control
    • Supports up to 1.8kHz (electrical frequency)
    • Support flux weakening control
    • Forward and reverse windmilling support
    • Analog, PWM, freq., or I2C-based control input
    • Configurable motor startup and stop options
    • Optional closed-loop speed or power or current control, or modulation index control
    • 5-point configurable reference profile support
    • Anti-voltage surge prevents overvoltage
    • Improved acoustic performance with automatic dead time compensation
    • Support maximum torque per ampere (MTPA)
    • Offline motor back EMF measurement
    • Variable monitoring through DACOUT
  • 65V Three-phase gate driver
    • Drives three high-side and three low-side N-Channel MOSFETs, 4.5V to 60V operating voltage
    • Supports 100% PWM duty cycle
    • Bootstrap-based gate driver architecture
    • 1A/2A Maximum peak source/sink current
  • Integrated current sense amplifier
    • Adjustable gain (5V/V, 10V/V, 20V/V, 40V/V)
  • Low-power sleep mode
    • 5µA (maximum) at VPVDD = 24V, TA = 25°C
  • Speed loop accuracy of <3% with internal clock
  • Configurable non-volatile memory (EEPROM) to store device configuration
  • Supports up to 75kHz PWM frequency for low inductance motor support
  • Accurate LDO (AVDD) 3.3V ±3%, 50mA support with AVDD connected to VREG
  • Independent driver shutdown path (DRVOFF)
  • Spread spectrum for EMI mitigation
  • A suite of integrated protection features
    • Supply under-voltage lockout (UVLO)
    • Motor lock detection (3 different types)
    • Over-current protection (OCP)
    • Thermal shutdown (TSD)
    • Fault condition indication pin (nFAULT)
    • Optional fault diagnostics over the I2C interface

Applications

  • Brushless-DC (BLDC) motor modules
  • Cordless vacuum cleaners
  • Washer and dishwasher pumps
  • Appliance fans and pumps
  • Cordless garden and power tools, lawnmowers

Simplified Schematic

Schematic - Texas Instruments MCF8329A/MCF8329A-Q1 Three-Phase BLDC Gate Drivers

Development Tools

Texas Instruments MCF8329RRYEVM Driver Evaluation Module (EVM)

Enables users to evaluate the performance of a 32-pin VQFN packaged MCF8329 motor driver.

Learn MoreTexas Instruments MCF8329RRYEVM Driver Evaluation Module (EVM) hakkında View ProductsTexas Instruments MCF8329RRYEVM Driver Evaluation Module (EVM) ile ilgili

Datasheets

Yayınlandı: 2024-02-09 | Güncellenmiş: 2025-05-06