Intersil Americas Inc.

Renesas Electronics America Inc.

Zilker Labs, Inc.

David L Beck

Robert Thomas Grisamore

Chris Morrow Young

Daniel Chieng

John A Billingsley

Demetri J Giannopoulos

Kiran Gonsalves

Michael Payne

Nicholas John Havens

Adam Vaughn

Methods and systems for performing current sense compensation for one or more power stages in a multiphase voltage regulator are described. A controller can be connected to a plurality of power stages through a communication interface. The controller can generate a data packet including a command to obtain temperature information and an address that identifies a specific power stage among the plurality of power stages. The controller can send the data packet to the plurality of power stages using the communication interface. The controller can receive temperature information of the specific power stage from the specific power stage through the communication interface. The controller can compensate a sensed current of the specific power stage based on the received temperature information of the specific power stage.

Remote current sense compensation in multiphase voltage regulators

The present embodiments allow multiphase buck controllers to be able to detect Power-on-Reset (POR) automatically and subsequently reboot the system and reconfigure the system as a single or multi-rail system. Some embodiments use an onboard bus that can communicate between controllers. In these and other embodiments, the system is able to recover automatically from a power failure afflicting any or all of the controllers. Embodiments are applicable to flexible plug-and-play modular digital buck regulation applications.

Automatic power-on-reset detection and recovery of a multi-phase digital buck controller

An embodiment pertains to a method including determining if an amplitude of an error signal has entered steady state. If the amplitude of the error signal has not entered steady state, then amplify with a high gain the amplitude of the AC component of the error signal. If the amplitude of the error signal has entered steady state, then initiate a timer. Determining if the amplitude of the error signal has remained in steady state while the timer runs. If the amplitude of the error signal has remained in steady state while the timer runs, then amplify with a low gain the amplitude of the AC component of the error signal.

Method and system for DC-DC voltage converters with diminished PWM jitter

On embodiment pertains to a method including determining if an amplitude of an error signal has entered steady state. If the amplitude of the error signal has not entered steady state, then amplify with a high gain the amplitude of the AC component of the error signal. If the amplitude of the error signal has entered steady state, then initiate a timer. Determining if the amplitude of the error signal has remained in steady state while the timer runs. If the amplitude of the error signal has remained in steady state while the timer runs, then amplify with a low gain the amplitude of the AC component of the error signal.

Method and system for DC-DC voltage converters

An auto-compensation method for compensating power regulators configured to generate a regulated output voltage. Auto-compensation may be performed dynamically by determining various coefficients of a compensation function used in compensating the power regulator, based on assumptions about the structure of the regulator and corresponding filters. The method may be used to determine at least the DC loop gain and the position of the compensation zeros, without requiring any prior knowledge of the values of the various components of the system. Furthermore, the selection of the compensation parameters (loop gain, position of zeroes) may be based on measurement of various state variables of the actual power converter, and adjustment of the various coefficients of the compensation function according to the measurements. Since no power-plant model of the power regulator is used, inaccuracies that would be inherent using any method that employs a model of the system instead of the system itself may be eliminated.

Auto-compensating power converter

Complex filters may be used to achieve compensation of a plant, corresponding for example to a power regulator or point-of-load (POL) regulator. Digital filter coefficients may be mapped to analogous poles and zeros, or they may be mapped to values of the quality factor (Q) of the output, frequency, and gain. The plant may be observed and characterized using a network analyzer to generate the Bode plot (or Nyquist plot) for the plant. The digital filter coefficients may be mapped to features that may be identified on the Bode plot (or Nyquist plot) to easily correlate characteristics of the digital filter or digital compensator to the plant characteristics. The mapped features may be adjusted, for example by a user, either manually or by executing one or more optimization algorithms, to achieve the desired results relative to the Bode plot (or Nyquist plot). The mapped features may then be reverse mapped to the digital filter or digital compensator coefficients to fine tune and implement the digital filter or digital compensator.

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Manor, TX, United States of America

David L Beck