Switch actuation measurement circuit for voltage converter

A drive, comprising:

• an inverter power circuit that applies power to an electric motor of a compressor from a direct current (DC) voltage bus;
• a power factor correction (PFC) circuit that outputs power to the DC voltage bus based on input alternating current (AC) power, the PFC circuit including:
• (i) a switch having a first terminal, a second terminal, and a control terminal;
• (ii) a driver that switches the switch between open and closed states based on a control signal;
• (iii) an inductor that charges and discharges based on switching of the switch;
• (iv) a circuit that outputs a signal indicating whether the switch is in the open state or the closed state based on a voltage across the first and second terminals of the switch;
• (v) a node that is connected to a first voltage at the first terminal of the switch when the switch is in the closed state and that is connected to a second voltage when the switch is in the open state;
• (vi) a first voltage divider that generates a third voltage based on a fourth voltage at the node;
• (vii) a second voltage divider that generates a fifth voltage based on a sixth voltage at the second terminal of the switch;
• and
• (viii) a comparator that generates the signal indicating whether the switch is in the open state or the closed state based on a comparison of the third voltage and the fifth voltage.