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MC34929

The 34929 Brushless DC (BLDC) Motor Driver IC is a complete BLDC motor driver system in one chip. It is designed to efficiently drive three-phase BLDC motors up to 1A and 28V, and has built in protection features making it ideal for a variety of consumer, portable, and office applications containing small motors. It incorporates digital I/O, making it easy to use with an MCU in a closed-loop motor control system. It has a built-in Hall-effect sensors interface and a Hall sensors voltage supply, so it can operate BLDC motors as a stand-alone controller/driver. Its sophisticated analog/mixed-signal state machine accommodates several modes of operation, including: Forward (CW), Reverse (CCW), Run/Stop, Braking, Variable Speed (External PWM), and Torque Limit (maximum-current-limit) modes.

Features

 

• Single-Supply Operation (8V–28V)
• Built-in Hall Sensors Controlled-Supply (VH)
• 3-Phase Hall Sensors Interface
• Two Tachometer Outputs (1X and 3X Hall Frequency)
• Adjustable Maximum Current Limit (Torque Limiting)
• Adjustable Stalled Rotor Detection and Protection
• Short Circuit Detection and Protection
• Over-Temperature Detection and Thermal Shutdown
• Undervoltage Detection and Shutdown

Parameters

Parameter Name	Value
Power Output - Load Current - Typ (A)(IL)	1
Power Output - Number of Channels	3
Power Output - Drain-to-Source On Resistance - Typ (Ohm)(RDS(ON))	0.25
Load Supply Voltage - Min (V)	8
Load Supply Voltage - Max (V)	28
Supply Voltage - Min (V)	8
Supply Voltage - Max (V)	28
Interface and Input Control	Parallel
Ambient Operating Temperature (Ta) - Min (oC)	0
Ambient Operating Temperature (Ta) - Max (oC)	85

 

 

Download

MC34929 Datasheet