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L6229

DMOS DRIVER FOR THREE-PHASE BRUSHLESS DC MOTOR

STMicroelectronics 

L6229

DMOS DRIVER FOR

THREE-PHASE BRUSHLESS DC MOTOR

1 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

2 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 Con-

troller and the decoding logic for single ended hall

sensors that generates the required sequence for the

power stage.

Available in PowerDIP24 (20+2+2), PowerSO36 and

SO24 (20+2+2) packages, the L6229 features a non-

Figure 1. Package

PowerDIP24

(20+2+2)

PowerSO36

SO24

(20+2+2)

Table 1. Order Codes

Part Number

Package

L6229N

L6229PD

L6229PDTR

PowerDIP24

PowerSO36

PowerSO36 in Tape & Reel

L6229D

SO24

L6229DTR

SO24 in Tape & Reel

dissipative overcurrent protection on the high side

Power MOSFETs and thermal shutdown.

October 2004

Rev. 3

1/25

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