MCT8314Z Sensored Trapezoidal Integrated FET BLDC Motor Driver

1 Features

Three-phase BLDC motor driver with integrated sensored trapezoidal control
- Hall Sensor based trapezoidal (120°) commutation
- Supports analog or digital hall inputs
- Configurable PWM modulation: synchronous/asynchronous
- Cycle-by-cycle current limit to limit phase current
- Supports up to 100-kHz PWM frequency
- Automatic synchronous rectification to reduce power losses
5.0-V to 35-V operating voltage (40-V abs max)
High output current capability: 1.5-A Peak
Low MOSFET on-state resistance
- 575-mΩ R_DS(ON) (HS + LS) at T_A = 25°C
Low-power sleep mode
- 1.5-µA at V_VM = 24-V, T_A = 25°C
Integrated current limiting eliminates external current sense resistors
Flexible device configuration options
- MCT8314ZS: 5-MHz 16-bit SPI interface for device configuration and fault status
- MCT8314ZH: Hardware pin-based configuration
Supports 1.8-V, 3.3-V, and 5-V logic inputs
Built-in 5-V (5%), 30-mA LDO regulator
A suite of integrated protection features
- Supply undervoltage lockout (UVLO)
- Charge pump undervoltage (CPUV)
- Overcurrent protection (OCP)
- Motor lock protection
- Thermal warning and shutdown (OTW/OTSD)
- Fault condition indication pin (nFAULT)
- Optional fault diagnostics over SPI