A switching regulator (139; 239), comprising: a power switch (147; 247) coupled between first and second terminals, the first terminal (141; 241) to be coupled to an energy transfer element of a power supply and the second terminal (143; 243) to be coupled to a supply rail. of the power supply; a control circuit (149; 249) coupled to a third terminal (145; 245) and the power switch (147; 247), the third terminal (145; 245) to be coupled to an output of the power supply, the control circuit (149; 249) coupled to generate a feedback signal responsive to the output of the power supply, the control circuit (149; 249) coupled to switch the power switch (147; 247) in response to the feedback signal, wherein the control circuit (149; 249) comprises a feedback signal circuit coupled to the third terminal (145; 245), the feedback signal circuit coupled to generate the feedback signal, and a pulse width modulator circuit coupled to switch the power switch (147; 247) in response to the feedback signal, the control circuit (149; 249) is coupled to switch the power switch (147; 247) at a fixed switching frequency for a first range of feedback signal values, the control circuit (149; 249) is coupled to vary a switching frequency of the power switch without skipping cycles in response to the feedback signal for a second range of feedback signal values, characterized in that the first and second ranges of the feedback signal correspond to first and second ranges of on-time values of a drive signal generated by the pulse width modulator circuit to switch the power switch (147; 247). a power switch (147; 247) coupled between first and second terminals, the first terminal (141; 241) to be coupled to an energy transfer element of a power supply and the second terminal (143; 243) to be coupled to a supply rail. of the power supply; the first terminal (141; 241) to be coupled to an energy transfer element of a power supply and the second terminal (143; 243) to be coupled to a supply rail. of the power supply; a control circuit (149; 249) coupled to a third terminal (145; 245) and the power switch (147; 247), the third terminal (145; 245) to be coupled to an output of the power supply, the control circuit (149; 249) coupled to generate a feedback signal responsive to the output of the power supply, the control circuit (149; 249) coupled to switch the power switch (147; 247) in response to the feedback signal, the control circuit (149; 249) coupled to generate a feedback signal responsive to the output of the power supply, the control circuit (149; 249) coupled to switch the power switch (147; 247) in response to the feedback signal, wherein the control circuit (149; 249) comprises a feedback signal circuit coupled to the third terminal (145; 245), the feedback signal circuit coupled to generate the feedback signal, and a pulse width modulator circuit coupled to switch the power switch (147; 247) in response to the feedback signal, the control circuit (149; 249) is coupled to switch the power switch (147; 247) at a fixed switching frequency for a first range of feedback signal values, the control circuit (149; 249) is coupled to vary a switching frequency of the power switch without skipping cycles in response to the feedback signal for a second range of feedback signal values, characterized in that the first and second ranges of the feedback signal correspond to first and second ranges of on-time values of a drive signal generated by the pulse width modulator circuit to switch the power switch (147; 247). a feedback signal circuit coupled to the third terminal (145; 245), the feedback signal circuit coupled to generate the feedback signal, and a pulse width modulator circuit coupled to switch the power switch (147; 247) in response to the feedback signal, the control circuit (149; 249) is coupled to switch the power switch (147; 247) at a fixed switching frequency for a first range of feedback signal values, the control circuit (149; 249) is coupled to vary a switching frequency of the power switch without skipping cycles in response to the feedback signal for a second range of feedback signal values, characterized in that the first and second ranges of the feedback signal correspond to first and second ranges of on-time values of a drive signal generated by the pulse width modulator circuit to switch the power switch (147; 247).