L6235Q

L6235Q DMOS driver for 3-phase brushless dc motor 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 tOFF PWM 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 Figure 1. Block diagram QFN-48 (7 x 7 mm) Description The L6235Q is a DMOS fully integrated 3-phase motor driver with overcurrent protection. Realized in BCDmultipower 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 3-phase BLDC motor including: a 3-phase DMOS bridge, a constant OFF time PWM current...