Temperature-sensitive transistor gate driver

A method of gate driving, the method comprising:

• receiving, by a duty cycle measurement circuit, a pulse width modulation (PWM) signal;
• producing, by the duty cycle measurement circuit, a start of conversion (SOC) signal based on a turn-on time of the PWM signal;
• receiving, by an analog to digital converter (ADC), an analog signal indicating a voltage across a temperature sensitive device;
• and
• producing, by the ADC in response to receiving the SOC signal, a digital signal representative of the analog signal.

A system for transistor gate drive, comprising:

• a gate driver comprising:
• a duty cycle measurement circuit having a duty cycle input and a duty cycle output, wherein the duty cycle measurement circuit is configured to provide a start of conversion (SOC) signal at the duty cycle output, and the duty cycle measurement circuit includes:
• a flip-flop having a flip-flop input and a flip-flop output, wherein the flip-flop input is coupled to the duty cycle input;
• a counter having a counter input and a counter output, wherein the counter input is coupled to the flip-flop output;
• a shift register having a shift input and a shift output, wherein the shift input is coupled to the counter output;
• and
• a comparator having first and second comparator inputs and a comparator output, wherein the first comparator input is coupled to the shift output;
• an analog to digital converter (ADC) having an ADC input, an ADC output, and a reference terminal, wherein the reference terminal is coupled to the duty cycle output, and the ADC input is coupled to a temperature sensitive device;
• and
• an adding unit having first and second adding unit inputs and an adding unit output, wherein the first adding unit input is coupled to the ADC output, and the second adding unit input is coupled to the duty cycle output;
• a communication interface coupled to the adding unit output through a galvanic isolator;
• and
• a controller unit coupled to the communication interface.