L6229Q Datasheet, PDF (1/28 Pages) STMicroelectronics – DMOS driver for three-phase brushless DC motor

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
VFQFPN32 5 mm x 5 mm
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.
Table 1.
Device summary
Order codes
L6229Q
L6229QTR
Package
VFQFPN32 5x5x1.0 mm
Packaging
Tube
Tape and reel
August 2010
Doc ID 15209 Rev 3
1/28
www.st.com
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