Sensorless BLDC motor control

Hi there,

my current project is to build a controller for a sensorless BLDC motor using a MSP430G2553. I want to realize trapezoidal control with Back-EMF/zero-crossing detection. I plan to detect zero-crossing with the Comparator(CA2/3/4 vs. CA1) and generate PWM using Timer1. Timer0 will be used for things like 30° delay before commutation.

So far I haven't written any software yet but I have come up with a schematic and board layout:

It uses IRL8113S as MOSFETS  and IR2184S as drivers, which have an integrated dead time generator.

Schematic and board layout as pictures:

Mockup pictures from OSHpark.com:

And finally the eagle files:

 BLMC.zip   72.75KB   3 downloads

I plan to order the PCBs in the next couple of days.(seeed or elecrow)

I'd appreciate any feedback you can give me.