Assignee: Zilker Labs, Inc.

Location: Austin, TX
No. of patents: 21

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Number	Title	Issue Date
8120205	Adding and dropping phases in current sharing A distributed power management system may include a digital communication bus and a plurality of POL (point-of-load) regulators coupled to the communication bus and configured in a current sharing arrangement in which each POL regulator of the plurality of POL regul...	02/21/2012
8072204	Control system optimization via digital diode emulation The operation of a voltage regulator (or point-of-load regulator) may be optimized, by performing diode emulation using the low-side output transistor (LS FET). The voltage regulator may be monitored for a specified trigger event, which may include an averaged value...	12/06/2011
8036762	Adaptive compensation in digital power controllers 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 fa...	10/11/2011
7915864	Power converter with transient processing capability Transient processing mechanisms for power converters. Error generation circuitry in a power converter may generate an error signal based on the difference between a power converter output voltage and a reference voltage. Transient detection circuitry may detect whet...	03/29/2011
7908402	Integrated multi-function point-of-load regulator circuit A power management system may comprise two or more POL regulators configured to transmit and receive data over a shared bus according to either a proprietary or a common bus protocol. Each POL regulator may be identified by a unique address that is part of an addres...	03/15/2011
7825642	Control system optimization via independent parameter adjustment A method for optimizing operation of a feedback system may include generating a control signal according to a control parameter, regulating an output of the feedback system via the control signal, and monitoring the control parameter. In response to the monitoring i...	11/02/2010
7793005	Power management system using a multi-master multi-slave bus and multi-function point-of-load regulators A power management system may comprise two or more POL regulators configured to transmit and receive data over a shared bus according to either a proprietary or a common bus protocol. Each POL regulator may be identified by a unique address that is part of an addres...	09/07/2010
7755343	Transient processing mechanism for power converters Transient processing mechanisms for power converters. Error generation circuitry in a power converter may generate an error signal based on the difference between a power converter output voltage and a reference voltage. Transient detection circuitry may detect whet...	07/13/2010
7730332	Method and apparatus for improved DC power deliver, management and configuration A new system-level approach to managing the delivery of DC voltage and current. Several system level functions may be enabled without requiring separate ICs to perform those functions. Supervisory functions for a voltage converter may be performed by a central contr...	06/01/2010
7723970	Method for pre-bias correction during turn-on of switching power regulators Rather than operating in asynchronous mode during turn-on ramps, a switching power regulator system may be configured to synthesize a digital waveform, which may protect against a pre-bias condition and maintain the desired ramp-up time and rate. The desired turn-on...	05/25/2010
7685320	Autonomous sequencing and fault spreading A power management system may be configured to allow digital information relating to the power management functions of sequencing and fault spreading to be passed between POL regulators using a standard multi-master multi-slave interface such as I2C bus i...	03/23/2010
7668607	Accurately setting parameters inside integrated circuits using inaccurate external components The control precision of one or more parameters of an integrated circuit (IC), for example the output voltage of a voltage regulator comprised in the IC, may be improved even when using inaccurate components external to the IC. Control of the output voltage, or any ...	02/23/2010
7653757	Method for using a multi-master multi-slave bus for power management In one set of embodiments, a power management system comprises two or more devices, such as POL devices, configured to transmit and receive data over a shared bus, such as an I2C bus, according to the bus protocol of the shared bus. Each device may be configured wit...	01/26/2010
7589514	Method for accurate current sensing in power converters A simple digital-to-analog converter (DAC) may be used to monitor a load current. The DAC may be configured to generate a voltage corresponding to an estimate of an average value of the load current. A comparator may be used to compare that voltage with a sense volt...	09/15/2009
7568117	Adaptive thresholding technique for power supplies during margining events Adaptive thresholding technique for power supplies during margining events. A power supply may include a fault detection mechanism for monitoring an output voltage of the power supply to determine whether the output voltage is greater than a first over-voltage thres...	07/28/2009
7545131	Transient processing mechanism for power converters Transient processing mechanisms for power converters. Error generation circuitry in a power converter may generate an error signal based on the difference between a power converter output voltage and a reference voltage. Transient detection circuitry may detect whet...	06/09/2009
7506179	Method and apparatus for improved DC power delivery management and configuration A new system-level approach to managing the delivery of DC voltage and current. Several system level functions may be enabled without requiring separate ICs to perform those functions. Supervisory functions for a voltage converter may be performed by a central contr...	03/17/2009
7467309	Point of load regulator having a pinstrapped configuration and which performs intelligent bus monitoring A new system-level approach to managing the delivery of DC voltage and current. Several system level functions may be enabled without requiring separate ICs to perform those functions. Supervisory functions for a voltage converter may be performed by a central contr...	12/16/2008
7327130	Current sense method A current-sense circuit for measuring a load current in a switching power regulator may operate independently of process variation and temperature, and measure bi-directional load currents without requiring high-speed, high-voltage amplifiers for operation. A positi...	02/05/2008
7292019	Method for accurately setting parameters inside integrated circuits using inaccurate external components The control precision of one or more parameters of an integrated circuit (IC), for example the output voltage of a voltage regulator comprised in the IC, may be improved even when using inaccurate components external to the IC. Control of the output voltage, or any ...	11/06/2007
7239257	Hardware efficient digital control loop architecture for a power converter A power converter including a hardware efficient control loop architecture. Error detection circuitry may generate an error signal based on the difference between a power converter output voltage and a reference voltage. An oversampling ADC may digitize the error si...	07/03/2007

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Assignee: Zilker Labs, Inc.