Allegro's A4915 is designed for PWM current control of 3-phase brushless DC motors. It is capable of high current gate drive for 6 all N-channel power MOSFETs. An internal charge pump ensures gate drive down to 7 V supply and provides limited gate drive down to 5 V. A bootstrap capacitor is used to generate a supply voltage greater than the source voltage of the high side MOSFET, required for N-channel MOSFETs.
To view the video about Allegro's A4915, click on the link below:
http://www.eeweb.com/company-blog/allegro_microsystems/allegro-a4915-product-overview/