Patent ID: 11923779
Assignee: ASTEC INTERNATIONAL LIMITED
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H | IPC H

Claim 5:
6. A control circuit for regulating an output voltage of a switched mode power supply having a variable input voltage and at least one power switch, the control circuit configured to:
generate a control signal for the at least one power switch of the switched mode power supply based at least in part on a control value, the control signal having a duty cycle;
generate an output signal value based at least in part on a comparison of the duty cycle of the control signal with a maximum duty cycle;
compare the output signal value with a comparison value;
generate a delta reference voltage signal based on the comparison of the output signal value with the comparison value;
generate a reference voltage based on a comparison of the delta reference voltage signal with a maximum output voltage reference signal; and
generate the control value based at least in part on a difference between the reference voltage and the output voltage of the switched mode power supply;
wherein the control circuit, in being configured to generate the delta reference voltage signal, is configured to set the delta reference voltage signal equal to a difference between the output signal value and the comparison value based on the difference being greater than zero; and
wherein the control circuit is further configured to set the delta reference voltage signal equal to zero based on the difference between the output signal value and the comparison value being less than zero.