Internal and external devices control in wireless power systems

A wireless power transmitter comprising:

• a coil;
• an analog front end (AFE) including a set of internal metal-oxide-semiconductor field-effect transistors (MOSFETs);
• and
• a controller configured to:
• generate a set of pulse width modulation (PWM) signals;
• and
• send the set of PWM signals to the AFE,
• wherein at least one of the AFE and the controller is configured to perform dead time optimization by using the PWM signals to control at least one of the set of internal MOSFETs and a set of external MOSFETs connected between the AFE and the coil, wherein the coil is driven by the set of internal MOSFETs and the set of external MOSFETs.

A method comprising:

• generating, by a controller of a wireless power transmitter, a set of pulse width modulation (PWM) signals;
• sending, by the controller of the wireless power transmitter, the set of PWM signals to an analog front end (AFE) of the wireless power transmitter;
• and
• performing, by at least one of the AFE and the controller of the wireless power transmitter, dead time optimization by using the set of PWM signals to control a set of internal MOSFETs in the AFE and a set of external MOSFETs connected between the AFE and a coil.