STMicroelectronics | L6229DTR

The L6229DTR is a DMOS driver for three-phase brushless DC motor with overcurrent protection.

This device is designed by MultiPower-BCD technology, the device combines isolated DMOS Power Transistors with CMOS and bipolar circuits on the same chip. The device includes all the circuitry needed to drive a three-phase BLDC motor including: a three-phase DMOS Bridge, a constant off time PWM Current Controller and the decoding logic for single ended hall sensors that generates the required sequence for the power stage.

Features:

• Operating supply voltage from 8 to 52 V
• 2.8 A output peak current (1.4 A DC)
• RDS(ON) 0.73 Ohm typ. value @ Tj = 25 °C
• Operating frequency up to 100 kHz
• Non dissipative overcurrent detection and protection
• Diagnostic output
• Constant toff pwm current controller
• Slow decay synchr. rectification
• 60° & 120° hall effect decoding logic
• Brake function
• Tacho output for speed loop
• Cross conduction protection
• Thermal shutdown
• Undervoltage lockout
• Integrated fast freeweeling diodes