Patent ID: 11870354
Assignee: MERAKI INTEGRATED CIRCUIT (SHENZHEN) TECHNOLOGY, LTD.
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H  Y | IPC H

Claim 4:
5. The converter according to claim 1, wherein the control circuit comprises: a first subtractor, a voltage stabilizer, a first multiplier, an absolute value module, a first comparator, a trigger, and a drive signal generating module, wherein
the first subtractor is configured to subtract the DC voltage signal actually output by the converter from the preset output DC voltage signal, and output an output voltage error value to the voltage stabilizer;
the voltage stabilizer is configured to amplify and process the output voltage error value, and output the voltage loop output value to the first subtractor;
the absolute value module is configured to calculate an absolute value of the instantaneous voltage value of the AC input at the AC input end, and output the absolute value of the instantaneous voltage value of the AC to the first multiplier;
the first multiplier is configured to multiply the instantaneous voltage value of the AC with the voltage loop output value of the converter to obtain the peak current given value of the transformer, and output the peak current given value of the transformer to the first comparator;
the first comparator is configured to output a high-level signal to the trigger when the peak current given value of the transformer is greater than the instantaneous current value of the current signal on the primary side of the transformer, and output a low-level signal to the trigger when the peak current given value of the transformer is less than the instantaneous current value of the current signal on the primary side of the transformer;
the trigger is configured to receive the signal output by the first comparator and output a PWM signal to the drive signal generating module; and
the drive signal generating module is configured to generate two complementary PWM drive signals according to the PWM signal, and output the two complementary PWM drive signals to the upper bridge switch and the lower bridge switch respectively.