| L&L Engineering. LLC Patent applications |
| Patent application number | Title | Published |
|---|
| 20120062290 | METHODS AND SYSTEMS FOR DIGITAL PULSE WIDTH MODULATOR - In one embodiment, the digital pulse width modulator of these teachings includes comparators and a number of phases and capable of increasing resolution without increasing clock frequency. In another embodiment, the digital pulse width modulator (DPWM) of these teachings includes equality comparators and a number of phases and increases resolution without increasing clock frequency. A further embodiment of the system of these teachings includes a priority encoded comparator component (in one instance including a number of comparators) comparing duty cycle commands against preset minimums, that embodiment being referred to as a frequency Foldback component. Other embodiments and embodiments of the method of these teachings are also disclosed. | 03-15-2012 |
| 20120046932 | METHODS AND SYSTEMS FOR ADAPTIVE CONTROL - A system includes a power supply model component and a disturbance estimating component. The power supply model component receives an estimated disturbance. The disturbance estimating component provides said estimated disturbance from a difference between a sensed output of a power supply and an estimated output from said power supply model component. | 02-23-2012 |
| 20120039376 | Systems And Methods For Digital Control Utilizing Oversampling - Methods and systems for digital control utilizing oversampling. | 02-16-2012 |
| 20120035779 | METHODS AND SYSTEMS FOR ADAPTIVE CONTROL - A switching power supply includes a circuit that provides an output voltage, a switching component that switches the circuit between a first output voltage state and a second output voltage state, and a driver component that receives an input control signal and that drives the switching component to cause the circuit to switch between the first output voltage state and the second output voltage state. An adaptive plant estimator receives the output voltage from the circuit and an input to the switching power supply and provides a model of the switching power supply that reflects changes in an output voltage state of the switching power supply. A compensator design component receives the model and provides compensator parameters that reflect changes in the output voltage state of the switching power supply. An adaptive compensator receives the compensator parameters and provides the input control signal to the driver component. | 02-09-2012 |
| 20110241634 | METHOD AND SYSTEMS FOR CONDUCTION MODE CONTROL - Methods for selecting between the two modes (states) of operation, continuous conduction and discontinuous conduction, are disclosed. Systems that are capable of selecting the operating mode and operating in the continuous conduction mode or the discontinuous conduction mode are also disclosed. | 10-06-2011 |
| 20110234190 | METHOD AND SYSTEMS FOR CONDUCTION MODE CONTROL - Methods for selecting between the two modes (states) of operation, continuous conduction and discontinuous conduction, are disclosed. Systems that are capable of selecting the operating mode and operating in the continuous conduction mode or the discontinuous conduction mode are also disclosed. | 09-29-2011 |
| 20110193537 | NON-LINEAR PWM CONTROLLER FOR DC-TO-DC CONVERTERS - A controller for switching power supplies includes a nonlinear controller component capable of providing a duty cycle to a pulse width modulator. The duty cycle corresponds to at least one predetermining switching power supply state variable. A nonlinear controller component receives as inputs at least one predetermined switching power supply state variable. A relationship between duty cycle and at least one predetermined switching power supply state variable is obtained by a predetermined method. The nonlinear controller component comprises memory for access by an application component. The memory includes a data structure stored in memory and a plurality of duty cycles. Each of the plurality of duty cycles has a corresponding at least one predetermined switching power supply state variable. Each duty cycle, when provided to the pulse width modulator of the switching power supply, provides a predetermined switching power supply output. | 08-11-2011 |
| 20110175582 | METHODS AND SYSTEMS FOR CONTROL OF SWITCHES IN POWER REGULATORS/POWER AMPLIFIERS - A system includes a first switch connected to a voltage input and a switching node. A second switch is connected to the switching node and a reference potential. A first circuit generates first rising edges and first falling edges by comparing a voltage at the switching node to a first voltage reference. The first voltage reference is between the reference potential and the voltage input. A second circuit generates second rising edges and second falling edges by comparing the switching node voltage to a second voltage reference. The second voltage reference is less than the reference potential. The controller calculates delay times based on the first rising edges, the first falling edges, the second rising edges and the second falling edges. The controller generates drive signals for the first switch and the second switch based on a duty cycle and the delay times. | 07-21-2011 |
| 20090284992 | METHOD AND SYSTEMS FOR CONDUCTION MODE CONTROL - Methods for selecting between the two modes (states) of operation, continuous conduction and discontinuous conduction, are disclosed. Systems that are capable of selecting the operating mode and operating in the continuous conduction mode or the discontinuous conduction mode are also disclosed. | 11-19-2009 |
| 20090027025 | NON-LINEAR PWM CONTROLLER - In one embodiment, the controller of these teachings includes a nonlinear controller component capable of providing an amplitude determining input signal to a control signal providing component, the control signal providing component providing output having a predetermined amplitude substantially over one time interval from a number of time intervals or output having a predetermined average amplitude substantially over one time interval from a number of time intervals, the amplitude determining input signal corresponding to at least one predetermined system state variable. The nonlinear controller component is operatively connected to receive as inputs at least one predetermined system state variable. A relationship between the amplitude determining input signal and at least one predetermined system state variable is obtained by a predetermined method. | 01-29-2009 |
| 20090016424 | SYSTEMS AND METHODS FOR DIGITAL CONTROL UTILIZING OVERSAMPLING - Methods and systems for digital control utilizing oversampling. | 01-15-2009 |
