DESCRIPTION

The L6229 is a DMOS Fully Integrated Three-Phase Motor Driver with Overcurrent Protection.

Realized in 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 52V

■ 2.8A OUTPUT PEAK CURRENT (1.4A DC)

■ RDS(ON) 0.73Ω TYP. VALUE @ Tj = 25 °C

■ OPERATING FREQUENCY UP TO 100KHz

■ 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