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

Claim 5:
6. The converter according to claim 5, wherein the control circuit further comprises: a second subtractor, a second multiplier, a divider, an integrator, and a second comparator, wherein
the second subtractor is configured to subtract the negative peak current value from the positive peak current value of the primary side of the transformer to obtain a difference between the positive peak current value and the negative peak current value of the primary side of the transformer, and output the difference to the second multiplier;
the second multiplier is configured to multiply the excitation inductance of the transformer with the difference between the positive peak current value and the negative peak current value, and output a multiplication result to the divider;
the divider is configured to divide the multiplication result output by the second multiplier by a product of the instantaneous voltage value of the DC output by the converter and a turn ratio of the transformer to obtain a preset time, and output the preset time to the second comparator;
the integrator is configured to count an actual time in which the drive signal for the upper bridge switch is at low-level, and output the actual time to the second comparator;
the second comparator is configured to output the low-level signal to the trigger when the actual time is less than or equal to the preset time, and output the high-level signal to the trigger when the actual time is greater than the preset time.