STMicroelectronics | L6235Q

The L6235Q is a 52 V DMOS driver for 3-phase brushless DC motor and is available in QFN-48 package.

This 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 3-phase BLDC motor including: a 3-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
• 5.6 A output peak current
• RDS(on) 0.3 Ω typ. value @ TJ= 25 °C
• Operating frequency up to 100 kHz
• Non-dissipative overcurrent protection
• Diagnostic output
• Constant tOFFPWM current controller
• Slow decay synchronous rectification
• 60° and 120° Hall effect decoding logic
• Brake function
• Tacho output for speed loop
• Cross conduction protection
• Thermal shutdown
• Undervoltage lockout
• Integrated fast freewheeling diodes