A system and method to regulate primary side current using an event driven architecture in led circuit

1) A system to regulate primary side current using an event driven architecture in led circuit, the system (100) comprises of:

• a. an input module (101) allows the user(s) to enter the desired reference voltage as per the requirement through a reference block;
• b. computing module (102) configured to compute the average half cyclepower/current from a input supply line cycle to generate the average feedback half cycle Peak Regulation Voltage (PRV) using a filter average;
• c. a subtractor module (103) receives the desired reference voltage and the average feedback half cycle PRV from the input module and computing module, wherein the desired reference voltage and average feedback half cycle PRV is calculated by calculating the difference therein to produce an error signal using a subtractor;
• d. a gain module (104) receives the difference error signal from the subtractor module and boost up the loop response and speed of error correction in the error signal by adding the gain signal;
• e. an accumulator module (105) configured to accumulate the error signal from the gain module and determine the level of effective reference set point signal to ensure the average feedback half cycle PRV/current equalling to the desired reference voltage using an accumulator;
• f. an analog to digital converter (ADC)(106) module configured to regulate and convert the primary peak voltage to the digital signal to realize the wave shaping using an Analog to Digital Converter (ADC);
• g. a multiplier module (107) multiplies the output of the analog to digital module and the accumulator module using a multiplier, wherein the multiplier module contains information of the primary peak voltage and level of error signal;
• h. a digital to analog converter (DAC) (108) module receives and converts the digital signal from the multiplier module to the analog signal using a Digital to Analog Converter (DAC), wherein the DAC establishes the desired set voltage/current by regulating the primary peak voltage/current of the analog signal;
• and
• i. a control module configured to control the secondary side LED currents by regulating the primary peak voltage using a switch (111), wherein the controlled secondary side currents is allowed to flow through a sense resistor (113) to generate a voltage, wherein the generated voltage is in form of saw tooth waveform, wherein the saw tooth waveform enables the user(s) determine and calculate the turn ON time and turn OFF time of the switchto achieve regulation of secondary side currents by controlling the primary side currents.