Circuit description

L6234

8/16

Doc ID 1107 Rev 10

6

Circuit description

L6234 is a triple half bridge designed to drive brushless DC motors. Each half bridge has 2

power DMOS transistors with RDSon = 0.3 Ω.

The 3 half bridges can be controlled independently by means of the 3 inputs IN1, IN2, IN3

and the 3 inputs EN1, EN2, and EN3. An external connection to the 3 common low side

DMOS sources is provided to connect a sensing resistor for constant current chopping

application.

The driving stage and the logic stage are designed to work from 7 V to 52 V.