Abstract: There are disclosed herein various implementations of a power converter having an advanced control integrated circuit (IC). The power converter includes the control IC and a power switch. The control IC includes a driving stage for driving the power switch, and a sensing stage coupled to the driving stage. The sensing stage is configured to produce a control signal for the driving stage based on an output current of the power converter sensed at a high side bus of the power converter.

Abstract: According to one embodiment, a flyback power converter comprises a primary circuit including a flyback driver, and an isolated output circuit responsive to the primary circuit. The isolated output circuit is used to power a load. The flyback driver is configured to identify a load current in the isolated output circuit from an input power to the primary circuit, and to regulate the load current according to the input power. In one embodiment, the flyback driver is configured to sense an input voltage to the flyback power converter, to identify an average current value corresponding to a current through a converter switch in the primary circuit, and to multiply the average current value and the input voltage to determine the input power to the primary circuit.

Abstract: There are disclosed herein various implementations of a power converter having an advanced control integrated circuit (IC). The power converter includes the control IC and a power switch. The control IC includes a driving stage for driving the power switch, and a sensing stage coupled to the driving stage. The sensing stage is configured to produce a control signal for the driving stage based on an output current of the power converter sensed at a high side bus of the power converter.

Abstract: According to one embodiment, a flyback power converter comprises a primary circuit including a flyback driver, and an isolated output circuit responsive to the primary circuit. The isolated output circuit is used to power a load. The flyback driver is configured to identify a load current in the isolated output circuit from an input power to the primary circuit, and to regulate the load current according to the input power. In one embodiment, the flyback driver is configured to sense an input voltage to the flyback power converter, to identify an average current value corresponding to a current through a converter switch in the primary circuit, and to multiply the average current value and the input voltage to determine the input power to the primary circuit.

Abstract: A three-way dimming ballast circuit for driving a ballast power switching circuit powering a gas discharge lamp such as a CFL. The circuit includes a driver circuit for driving high and low side switches of the ballast power switching circuit; a control circuit for driving the driver circuit including an oscillator circuit for providing an oscillating signal to control the frequency of operation of the ballast power switching circuit, the ballast power switching circuit outputting lamp-powering pulsed signals; and a dimming control circuit having an input, the dimming control circuit receiving an AC lamp current feedback signal at the input, the dimming control circuit further receiving a DC input voltage reference at the input, whereby the DC input voltage reference determines a desired dimming level of the lamp and the AC lamp current feedback signal maintains the lamp brightness at the desired dimming level.

Abstract: A three-way dimming ballast circuit for driving a ballast power switching circuit powering a gas discharge lamp such as a CFL. The circuit includes a driver circuit for driving high and low side switches of the ballast power switching circuit; a control circuit for driving the driver circuit including an oscillator circuit for providing an oscillating signal to control the frequency of operation of the ballast power switching circuit, the ballast power switching circuit outputting lamp-powering pulsed signals; and a dimming control circuit having an input, the dimming control circuit receiving an AC lamp current feedback signal at the input, the dimming control circuit further receiving a DC input voltage reference at the input, whereby the DC input voltage reference determines a desired dimming level of the lamp and the AC lamp current feedback signal maintains the lamp brightness at the desired dimming level.