this is a half bridge MOSFET ESC for WYE wound BDLC. you connect VCC to common point (COM) of the BDLC. The three phase wires from the motor to Fase A, Fase B, Fase C. depending on which one of the MOSFETS is open (controlled via a microcontroller, connected to PB1, PB2, PB3), current passes through the respective coil of the motor, rotating it a bit.