Systems, apparatuses, and methods to control a bridgeless totem pole power factor correction (PFC) circuit

A system comprising:

• a power factor correction (PFC) circuit comprising a plurality of switches;
• and
• a controller for the PFC circuit, wherein the controller comprises:
• a voltage sense circuitry configured to receive at least one voltage signal and output a first voltage sense signal representative of a line voltage of the PFC circuit, wherein the first voltage sense signal comprises a first bi-directional waveform;
• a voltage rectification circuitry coupled to the voltage sense circuitry, wherein the voltage rectification circuitry is configured to receive the first voltage sense signal and output a second voltage sense signal comprising a first uni-directional waveform;
• a current sense circuitry configured to receive a current signal and output a first current sense signal representative of a current associated with an inductor of the PFC circuit, wherein the first current sense signal comprises a second bi-directional waveform;
• a current rectification circuitry coupled to the current sense circuitry, wherein the current rectification circuitry is configured to receive the first current sense signal and output a second current sense signal comprising a second uni-directional waveform;
• an analog control circuitry coupled to the voltage rectification circuitry and the current rectification circuitry, wherein the analog control circuitry is configured to receive the second voltage sense signal and the second current sense signal and output a pulse-width modulation (PWM) signal;
• and
• a driving logic circuitry coupled to the analog control circuitry, wherein the driving logic circuitry is configured to receive the PWM signal and generate a plurality of signals for the plurality of switches based at least in part on the PWM signal.

A method comprising:

• providing a power factor correction (PFC) circuit comprising a plurality of switches;
• providing a PFC controller coupled to the PFC circuit,
• wherein the PFC controller comprises a voltage rectification circuitry coupled to a voltage sense circuitry, a current rectification circuitry coupled to a current sense circuitry, an analog control circuitry coupled to the voltage rectification circuitry and the current rectification circuitry, and a driving logic circuitry coupled to the analog control circuitry,
• wherein the analog control circuitry is configured to output a pulse-width modulation (PWM) signal based at least in part on a voltage sense signal from the voltage rectification circuitry and a current sense signal from the current rectification circuitry, and
• wherein the driving logic circuitry is configured to generate a plurality of signals based at least in part on the PWM signal;
• and
• operating at least one switch of the plurality of switches to change states between an on state and an off state based at least in part on at least one signal of the plurality of signals.