MC43 PWM OUT to drive a servo

Braidan Duffy 1 year ago in IQANdesign 0


I am using a MC43 to try and drive some hobbyist 9-gram servos for a project. We are using a unidirectional, HS-only PWM_OUT channel to try and move the servo with a signal of 1100-1900 us. We have tried to setup several resistor networks and logic level converters to get the 12V signal from the MC43 to the 5V threshold for the servos. However none of them have worked. Additionally, we are also noticing that the signal from the MC43 only goes between +5V and +12V when a pull down resistor is applied between the signal and ground.