Controller device for power electronics circuit

A method for controlling power electronics circuitry by a controller device, the method comprising:

• determining a turn-on voltage threshold based on a level of a high-voltage (HV) pin of the controller device, wherein the turn-on voltage threshold is adjustable;
• determining whether a voltage level of a power supply (VCC) pin of the controller device is greater than the turn-on voltage threshold;
• and
• causing the controller device to enter a normal-operation mode in response to determining that the voltage level of the VCC pin is greater than the turn-on voltage threshold.

A power electronics device comprising:

• rectification circuitry configured to rectify alternating-current (AC) electricity;
• power-factor correction (PFC) circuitry configured to receive the rectified AC electricity from the rectification circuitry;
• switched-mode power supply (SMPS) circuitry configured to generate a main power supply;
• and
• a controller device configured to control the PFC circuitry and the SMPS circuitry, wherein the controller device includes:
• a power supply (VCC) pin;
• a high-voltage (HV) pin configured to:
• receive the rectified AC electricity from the rectification circuitry;
• and
• pre-charge the VCC pin during a startup sequence;
• a startup device configured to deliver the rectified AC electricity from the HV pin to the VCC pin;
• comparator circuitry configured to:
• determine whether a voltage level of the VCC pin is greater than a turn-on voltage threshold;
• and
• cause the controller device to enter a normal-operation mode in response to determining that the voltage level of the VCC pin is greater than the turn-on voltage threshold;
• and
• level detection circuitry configured to determine the turn-on voltage threshold based on a level of the HV pin, wherein the turn-on voltage threshold is adjustable.