L6226Q Datasheet, PDF (1/28 Pages) STMicroelectronics – DMOS dual full bridge driver

L6226Q
DMOS dual full bridge driver
Features
■ Operating supply voltage from 8 to 52 V
■ 2.8 A output peak current (1.4 A DC)
■ R_DS(on) 0.73 Ω typ. value @ T_J = 25 °C
■ Operating frequency up to 100 kHz
■ Programmable high side overcurrent detection
and protection
■ Diagnostic output
■ Paralleled operation
■ Cross conduction protection
■ Thermal shutdown
■ Under voltage lockout
■ Integrated fast free wheeling diodes
Applications
■ Bipolar stepper motor
■ Dual or quad DC motor
Figure 1. Block diagram
VFQFPN32 5 mm x 5 mm
Description
The L6226Q is a DMOS dual full bridge designed
for motor control applications, realized in
BCDmultipower technology, which combines
isolated DMOS power transistors with CMOS and
bipolar circuits on the same chip. Available in
QFN32 5x5 package, the L6226Q features
thermal shutdown and a non-dissipative
overcurrent detection on the high side power
MOSFETs plus a diagnostic output that can be
easily used to implement the overcurrent
protection.
VBOOT
VCP
PROGCL_A
OCD_A
V_BOOT
CHARGE
PUMP
OCD_A
EN_A
IN1_A
IN2_A
OCD_B
PROGCL_B
EN_B
IN1_B
IN2_B
THERMAL
PROTECTION
VOLTAGE
10V
REGULATOR
5V
OCD_B
June 2008
OVER
CURRENT
DETECTION
GATE
LOGIC
V_BOOT
10V
OVER
CURRENT
DETECTION
GATE
LOGIC
Rev 2
V_BOOT
VS_A
OUT1_A
OUT2_A
10V
SENSE_A
BRIDGE A
BRIDGE B
D99IN1088A
VS_B
OUT1_B
OUT2_B
SENSE_B
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