Datasheet

August 2010 Doc ID 15209 Rev 3 1/28
28
L6229Q
DMOS driver for three-phase brushless DC motor
Features
Operating supply voltage from 8 to 52 V
2.8 A output peak current (1.4 A RMS)
R
DS(on)
0.73 Ω typ. value @ T
J
= 25 °C
Operating frequency up to 100 kHz
Non dissipative overcurrent detection and
protection
Diagnostic output
Constant t
OFF
PWM current controller
Slow decay synchronous rectification
60° and 120° hall effect decoding logic
Brake function
Cross conduction protection
Thermal shutdown
Under voltage lockout
Integrated fast free wheeling diodes
Description
The L6229Q is a DMOS fully integrated three-
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 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.
Available in VFQFPN-32 5 x 5 package, the
L6229Q features a non-dissipative overcurrent
protection on the high side power MOSFETs and
thermal shutdown.
VFQFPN32 5 mm x 5 mm
Table 1. Device summary
Order codes Package Packaging
L6229Q
VFQFPN32 5x5x1.0 mm
Tube
L6229QTR Tape and reel
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