| COSMIC CIRCUITS PRIVATE LIMITED Patent applications |
| Patent application number | Title | Published |
|---|
| 20100283439 | EFFICIENT SWITCH CASCODE ARCHITECTURE FOR SWITCHING DEVICES - Efficient switch cascode architecture for switching devices, such as switching regulators. The cascode architecture includes a switching stage responsive to an external driver signal for switching transitions, and a bias generator operative to bias the cascode transistor of the switching stage to protect the switching stage from damage during the switching transitions. | 11-11-2010 |
| 20100253563 | CAPACITOR BASED DIGITAL TO ANALOG CONVERTER LAYOUT DESIGN FOR HIGH SPEED ANALOG TO DIGITAL CONVERTER - A method and system for capacitor based digital to analog converter design layout for high speed analog to digital converter are provided. The method includes arranging a plurality of metal plates to form the capacitor. Each of the plurality of metal plates includes a driven plate and a common plate. The method also includes generating a plurality of interconnects in the common plate and extending the driven plate over the plurality of interconnects. Further, the method includes shielding the common plate by the driven plate. The system includes an analog to digital converter. The analog to digital converter also includes capacitor based digital to analog converter and digital logic for controlling digital operations in the analog to digital converter. The capacitor based digital to analog converter includes a plurality of capacitors, and a comparator for comparing the analog output from the digital to analog converter with a ground potential. | 10-07-2010 |
| 20100164611 | LEAKAGE INDEPENDENT VRY LOW BANDWIDTH CURRENT FILTER - A current filter circuit is provided. The current filter circuit comprises a source transistor comprising a drain, a gate, and a source. The source of the source transistor is coupled to a reference voltage terminal, the gate of the source transistor is coupled to the gate of a mirror transistor, and the drain of the source transistor is coupled to a reference current source. The mirror transistor comprises a drain, a gate, and a source. The source of the mirror transistor is coupled to the reference voltage terminal, the gate is coupled to the gate of the source transistor, and the drain is coupled to a load. The current filter circuit comprises a low pass filter for filtering noise. The current filter circuit also comprises an impedance reduction circuit coupled to the drain of the mirror transistor for reducing bandwidth of the current filter circuit. | 07-01-2010 |
| 20100164606 | DC BIASING CIRCUIT FOR A METAL OXIDE SEMICONDUCTOR TRANSISTOR - A method for biasing a MOS transistor includes AC coupling an input signal from an amplifier stage to a gate of the MOS transistor. The method includes connecting a pair of diodes in an opposing parallel configuration to a bias transistor and a current source. Further, the method includes generating a DC bias voltage through the bias transistor and the current source. The method also includes clamping the voltage at drain of the bias transistor to a fixed voltage by a clamping circuit. Further, the method includes coupling the DC bias voltage to the gate of the MOS transistor through the pair of diodes. | 07-01-2010 |
| 20100026267 | SINGLE INDUCTOR MULTIPLE OUTPUT SWITCHING DEVICES - Single inductor multiple output (SIMO) switching devices with efficient regulating circuits. The SIMO switching device includes a plurality of time division multiplexing (TDM) switches for switching current through an inductor of the SIMO switching device. The plurality of TDM switches produces a plurality of outputs. The SIMO switching device further includes an error calculation circuit operatively coupled to the plurality of outputs for determining a calculated error from the plurality of outputs; a time slot generation circuit for controlling the plurality of TDM switches according to the calculated error; and a pulse width modulation (PWM) control circuit operatively coupled to the time slot generation circuit for controlling a plurality of PWM switches of a switching stage of the SIMO switching device in a continuous conduction mode (CCM) of operation. The PWM switches are controlled according to the time slots generated by the time slot generation circuit. | 02-04-2010 |
| 20090278516 | TRANSIENT RECOVERY CIRCUIT FOR SWITCHING DEVICES - A transient recovery circuit for switching devices. The transient recovery circuit includes a detecting circuit for detecting a rapid transient in an output voltage of a switching device by detecting a rate of the output voltage transient; an auxiliary controlling circuit in a feedback loop of the switching device for correcting the output voltage by changing a bandwidth of the feedback loop if the rapid transient is detected; and an initializing circuit for initializing the feedback loop to expected operating points in a continuous conduction mode after correcting the output voltage. | 11-12-2009 |
