Abstract: A system for balancing current supplied by a plurality of regulators coupled to a load includes circuitry operable to measure an average load current supplied by each regulator, determine an overall average current to be shared by the plurality of regulators, and compare each average load current with the overall average current to be shared by the plurality of regulators. The circuitry included in the system is also operable to adjust an output current of one or more of the plurality of regulators so that the plurality of regulators supply the same current to the load.

Abstract: A system for balancing current supplied by a plurality of regulators coupled to a load includes circuitry operable to measure an average load current supplied by each regulator, determine an overall average current to be shared by the plurality of regulators, and compare each average load current with the overall average current to be shared by the plurality of regulators. The circuitry included in the system is also operable to adjust an output current of one or more of the plurality of regulators so that the plurality of regulators supply the same current to the load.

Abstract: A method of balancing current supplied by a plurality of regulators coupled to a load includes: measuring an average load current supplied by each regulator; determining an overall average current to be shared by the plurality of regulators; comparing each average load current with the overall average current to be shared by the plurality of regulators; and adjusting an output current of one or more of the plurality of regulators so that the plurality of regulators supply the same current to the load.

Abstract: A multiphase power regulator includes a multiphase pulse width modulator, an output stage and an active transient response circuit. The output stage includes a high side transistor, a low side transistor and an inductor. The output stage is configured to supply power to a load responsive to signals generated by the multiphase pulse width modulator. The active transient response circuit is coupled between the output stage and the multiphase pulse width modulator and configured to detect the voltage level at the output stage and provide a signal to the multiphase pulse width modulator that is a function of the amplitude of the deviation of the detected voltage level from a target voltage.

Abstract: A multiphase power regulator includes a multiphase pulse width modulator, an output stage and an active transient response circuit. The output stage includes a high side transistor, a low side transistor and an inductor. The output stage is configured to supply power to a load responsive to signals generated by the multiphase pulse width modulator. The active transient response circuit is coupled between the output stage and the multiphase pulse width modulator and configured to detect the voltage level at the output stage and provide a signal to the multiphase pulse width modulator that is a function of the amplitude of the deviation of the detected voltage level from a target voltage.

Abstract: A method of balancing current supplied by a plurality of regulators coupled to a load includes: measuring an average load current supplied by each regulator; determining an overall average current to be shared by the plurality of regulators; comparing each average load current with the overall average current to be shared by the plurality of regulators; and adjusting an output current of one or more of the plurality of regulators so that the plurality of regulators supply the same current to the load.

Abstract: Disclosed is a digital current sharing structure and method in which a plurality of regulators are configured to share the load current. Current share circuits in each of the regulators are configured to measure and compare the average current provided by that particular regulator with the overall average current provided by all the regulators. Each of the current share circuits then provides an output so that the output of each regulator is adjusted to provide the same amount of current to the load. Digital processing with both analog and digital averaging are disclosed. Also disclosed is a programmable hysteresis technique to eliminate relatively trivial adjustments.

Abstract: Disclosed is a multi-phase power regulator that accurately senses current at a load in a lossless manner and adjusts the power supplied to the load based on the sensed current. Also disclosed is a method of calibrating a multiphase voltage regulator by applying a known calibration current at the load and determining actual current values by the difference in measured values between when the known calibration current is applied and when it is not applied. The accurate current is determined at a known temperature and accurate temperature compensation is provided by a non-linear digital technique. Each phase of the multi-phase power regulator is individually calibrated so that balanced channels provide accurate power to the load. Also disclosed is a calibration method with minimal noise generation.

Abstract: Disclosed is a multi-phase pulse width modulated voltage regulator and method in which transient voltage excursions or deviations that exceed the load line voltage by more than a pre-determined amount are detected by an ATR circuit and a correction signal is applied. The correction signal is in the form of asynchronous pulses and the number of such pulses is a function of the magnitude of the voltage excursion as determined by the number of thresholds that are exceeded. Also disclosed is an adaptive voltage positioning (AVP) circuit and method for early detection of a transient event by sensing voltage changes at the load and adjusting the target voltage with pre-determined current values prior to the time that ATR event changes in the current at the load are detected.

Abstract: Disclosed is a multi-phase pulse width modulated voltage regulator and method in which transient voltage excursions or deviations that exceed the load line voltage by more than a pre-determined amount are detected by an ATR circuit and a correction signal is applied. The correction signal is in the form of asynchronous pulses and the number of such pulses is a function of the magnitude of the voltage excursion as determined by the number of thresholds that are exceeded. Also disclosed is an adaptive voltage positioning (AVP) circuit and method for early detection of a transient event by sensing voltage changes at the load and adjusting the target voltage with pre-determined current values prior to the time that ATR event changes in the current at the load are detected.

Abstract: Disclosed is a multi-phase pulse width modulated voltage regulator and method in which transient voltage excursions or deviations that exceed the load line voltage by more than a predetermined amount are detected by an ATR circuit and a correction signal is applied. The correction signal is in the form of asynchronous pulses and the number of such pulses is a function of the magnitude of the voltage excursion as determined by the number of thresholds that are exceeded. Also disclosed is an adaptive voltage positioning (AVP) circuit and method for early detection of a transient event by sensing voltage changes at the load and adjusting the target voltage with pre-determined current values prior to the time that ATR event changes in the current at the load are detected. The AVP load line is pre-positioned for more precise current control. Also disclosed is an adaptive filter with adjustable frequency characteristics in response to an ATR event. Also disclosed is a pulse limiting circuit.

Abstract: Disclosed is a multi-phase pulse width modulated voltage regulator and method in which transient voltage excursions or deviations that exceed the load line voltage by more than a pre-determined amount are detected by an ATR circuit and a correction signal is applied. The correction signal is in the form of asynchronous pulses and the number of such pulses is a function of the magnitude of the voltage excursion as determined by the number of thresholds that are exceeded. Also disclosed is an adaptive voltage positioning (AVP) circuit and method for early detection of a transient event by sensing voltage changes at the load and adjusting the target voltage with pre-determined current values prior to the time that ATR event changes in the current at the load are detected. The AVP load line is pre-positioned for more precise current control. Also disclosed is an adaptive filter with adjustable frequency characteristics in response to an ATR event. Also disclosed is a pulse limiting circuit.

Abstract: Disclosed is a multi-phase power regulator that accurately senses current at a load in a lossless manner and adjusts the power supplied to the load based on the sensed current. Also disclosed is a method of calibrating a multiphase voltage regulator by applying a known calibration current at the load and determining actual current values by the difference in measured values between when the known calibration current is applied and when it is not applied. The accurate current is determined at a known temperature and accurate temperature compensation is provided by a non-linear digital technique. Each phase of the multi-phase power regulator is individually calibrated so that balanced channels provide accurate power to the load. Also disclosed is a calibration method with minimal noise generation.