Abstract: A circuit includes a compensation inductor, a compensation resistor, and a current emulation circuit. The current emulation circuit has a time constant smaller than a time constant of the compensation inductor and the compensation resistor. The current emulation circuit includes a sense resistor having a first terminal coupled with a first terminal of the compensation inductor, and a sense capacitor having a first terminal coupled with a second terminal of the sense resistor and a second terminal coupled with ground.

Abstract: In a described example, a detector is configured to control a bus operating mode of a bus controller. The detector can be coupled to the bus controller. The detector includes a bus voltage detector that can be configured to provide a bus voltage detected signal indicative of a bus voltage level of a bus voltage on a communication bus. The bus controller can be configured to operate in a first bus mode. The detector can include logic that can be coupled to the bus voltage detector. The logic can be configured to determine whether the bus voltage is at a high bus voltage level or a low bus voltage level based on the bus voltage detected signal and instruct the bus controller to either continue operating in the first bus mode or to switch to operating in a second bus mode based on the determined bus voltage level.

Abstract: A controller for a multiphase power converter includes a counter configured to receive a clock signal and output a count signal having a count value that sequentially counts from 0 to N in phase with the clock signal, where N is equal to a number of phases of the multiphase power converter, and a plurality of drive stages. Each drive stage is configured to receive the count signal from the counter and, based on the count value, output a corresponding pulse width modulation (PWM) signal. At least two of the plurality of drive stages are configured to output their corresponding PWM signals in response to receiving the count signal having a same count value.

Abstract: A power controller comprises a control loop configured to control timing of pulsed signals that activate phases of a coupled inductor voltage regulator based on current demand of a load circuit and comprises a transient detection circuit configured to determine a projected current through a compensation inductor of the coupled inductor voltage regulator based on a state of the phases and operating parameters of the coupled inductor voltage regulator. The transient detection circuit is configured to detect a transient in the current demand of the load circuit based on a variability in phase-to-phase overlap of the pulsed signals. Responsive to detecting the transient, the transient detection circuit is configured to apply a correction to the control loop that alters the timing of the pulsed signals based on the projected current through the compensation inductor.

Abstract: A circuit includes a compensation inductor, a compensation resistor, and a current emulation circuit. The current emulation circuit has a time constant smaller than a time constant of the compensation inductor and the compensation resistor. The current emulation circuit includes a sense resistor having a first terminal coupled with a first terminal of the compensation inductor, and a sense capacitor having a first terminal coupled with a second terminal of the sense resistor and a second terminal coupled with ground.