Dual full-bridge driver gives robust operation in stepper or dc motors

The STMicroelectronics L6206Q includes built-in over-current and thermal protection features. 

The device benefits from ST’s BCD multipower technology, which combines isolated DMOS power transistors with CMOS and bipolar circuits on the same chip. Supplied in a 7 mm x 7 mm VFQFPN package, the L6206Q driver ensures reliable and safe operation of electric motors: it features thermal shutdown protection, and performs non-dissipative over-current detection on the high-side power MOSFETs. A diagnostic output can easily be used to implement over-current protection.

The L6206Q is a member of the L62 series, which includes various motor drivers for a wide range of applications in small and medium-sized motors. The products include the L6208 and L6228, which feature an embedded stepping sequence generator for driving stepper motors. 

The L6205/06/07 and L6225/26/27 are general-purpose brushed dc motor drivers, and feature programmable over-current protection. 

The L6229, L6230, L6234 and L6235 are ideal for both sensored and sensorless driving of three-phase brushless dc motors. They include embedded PWM current control and decoding logic for Hall-effect position sensors.