Patent ID: 9380676
Filing Date: 2016-06-28
CPC Classification: H02M,H05B,Y02B

Claim Text:
1. An alternating current (AC) to AC converter circuit for independently adjusting a current level and a voltage level to adjust a light output of a light operating on AC power, comprising: a microprocessor for controlling the current level and the voltage level delivered from an AC power source to the light operating on the AC power without AC to direct current (DC) conversion, wherein the current is an alternating current; a first switch coupled to the microprocessor; a power factor controller (PFC) module coupled to the first switch, wherein the first switch is controlled by the microprocessor in accordance with a desired power output via a pulse width modulation (PWM) control signal, wherein the PWM control signal determines a first duty cycle of the first switch coupled to the PFC module, wherein the first duty cycle is determined based upon an increase of the voltage level that is needed to operate the light at an optimal voltage level; one or more boost switches coupled to the PFC module, wherein the one or more boost switches are controlled by the PFC module as a function of an operation of the first switch, wherein the PFC module adjusts the voltage level in accordance with the operation of the first switch by operating the one or more boost switches at a second duty cycle, wherein the second duty cycle is determined based upon the increase of the voltage level that is needed to operate the light at the optimal voltage level; and one or more load switches coupled to the one or more boost switches, wherein the one or more load switches are controlled by the microprocessor in accordance with the desired power output.