Patent ID: 11888405
Assignee: POWER INTEGRATIONS, INC.
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H  Y | IPC H

Claim 7:
8. A primary controller for use in a power converter, the primary controller comprising:
a control circuit coupled to determine a mode of operation of the power converter and to generate a first mode of operation signal and a second mode of operation signal, the control circuit further coupled to generate a control signal in response to the first mode of operation signal or the second mode of operation signal, wherein the control signal causes a delay time to enable a turn ON of a power switch after a turn OFF of a clamp switch, the control circuit further comprising:
an enable circuit coupled to enable the control circuit to output a clamp drive signal to control the clamp switch in response to a request signal representative of an output of the power converter; and
a delay circuit coupled to receive the first mode of operation signal and the second mode of operation signal, wherein the delay circuit is further coupled to apply a first delay time to the control signal in response to the first mode of operation signal or a second delay time to the control signal in response to the second mode of operation signal, the second delay time being longer than the first delay time; and

a drive circuit coupled to output a drive signal to enable the power switch to transfer energy from an input of the power converter to the output of the power converter in response to the control signal.