Holtek launches a new generation of integrated Flash MCU BD66FM6550G dedicated to brushless DC motors, integrating MCU, LDO and 3-channel 48V gate-driver (Gate-Driver), very suitable for small PCB space, can support square wave and sine wave control, with Sensorless enhanced The filter can make the starting or low speed more stable, which is very suitable for the application of power tools, pumps, fans and other products below 8 series lithium batteries.
BD66FM6550G has 8K×16 Flash ROM, 2K×8 RAM, 512×8 EEPROM and internal system frequency of 20MHz, has 10+1 channels of 12-bit ADC, and is equipped with 4 groups of 16-bit and 10-bit Timer. Provide BLDC motor control circuit for BLDC control, including 16-bit speed monitoring Timer, 3 sets of 10-bit complementary PWM output with dead zone and OCP over-current protection function.
BD66FM6550G achieves Hall element or Sensorless rotor position detection through built-in 3 comparators, and is equipped with a back-EMF noise suppression filter circuit. The hardware cycle-by-cycle current protection control function can directly set the limit of the output current, so that the motor can continue to run under the maximum protection current. The BD66FM6550G is available in 32QFN (4×4) and 48LQFP_EP packages. With the brushless DC motor development platform, it can speed up customer product development and evaluation timeliness.
