Patent application number | Description | Published |
20080309404 | Single-Ended Amplifier - In an amplifier arrangement comprising an amplifier (A | 12-18-2008 |
20090315623 | CLASS D AUDIO AMPLIFIER - A class D amplifier ( | 12-24-2009 |
20100013555 | POWER AMPLIFIER - A driver (Highside Driver, Lowside Driver) adapted to drive each of final transistors (M | 01-21-2010 |
20100045356 | DATA PROCESSING SYSTEM FOR CLIPPING CORRECTION | 02-25-2010 |
20100176881 | PULSE WIDTH MODULATION CIRCUIT AND CLASS-D AMPLIFIER COMPRISING THE PWM CIRCUIT - A pulse width modulation (PWM) circuit comprises a first integrator (g m | 07-15-2010 |
20100220419 | ESD PROTECTION CIRCUIT - An ESD protection circuit comprises a first supply line (V | 09-02-2010 |
20100321111 | POWER AMPLIFIER - The invention refers to a power amplifier comprising a first transistor (M | 12-23-2010 |
20110193613 | SWITCHABLE CURRENT SOURCE CIRCUIT AND METHOD - A method and circuit for providing a switched current source output has a precharge mode, in which a charge storage device is charged to a reference voltage, and the gate of an output transistor is discharged. In a discharge mode, the charge storage device is discharged to the gate of the output transistor to raise the gate voltage by an amount depending on the charge flow. | 08-11-2011 |
20120134514 | AMPLIFIER AND AMPLIFIER CONTROL METHOD - Disclosed is a class D amplifier comprising a modulation stage having a first input for receiving an input signal and an output for producing a modulated version of the input signal; a plurality of power stages, each power stage being responsive to said modulation stage and comprising a first switch and a second switch coupled in series between a first voltage source and a second voltage source, each power stage comprising an output node between the first switch and the second switch; and a power stage control circuit for measuring the input signal level and enabling a selected number of the power stages as a function of the measured input signal level. A method for controlling such a class D amplifier is also disclosed. | 05-31-2012 |
20130049718 | CLASS D AMPLIFIER AND CONTROL METHOD - A Class D power amplifier is for driving a load between first and second output nodes defined between two bridges. A controller is adapted to derive an amplifier hold signal when an overcurrent state is detected in an output bridge, and to prevent switching of the other output bridge between the two main output states. | 02-28-2013 |
20130049779 | INTEGRATED CIRCUIT - An integrated circuit comprising a first pair ( | 02-28-2013 |
20130049855 | INTEGRATED CIRCUIT - An integrated circuit comprising a Class-D amplifier for amplifying an input signal at an input terminal is disclosed. The Class-D amplifier is switchable between an operational mode, in which a comparator ( | 02-28-2013 |
20130257533 | SWITCHED-MODE POWER SUPPLY AND METHOD OF OPERATION - A method of operating a switched-mode power supply (SMPS) for supplying power to a load circuit, which draws a supply current that varies with an input signal to the load circuit is disclosed. The method comprises monitoring the input signal and controlling the amount of accumulated energy transferred for consumption by the load circuit, in use, in accordance with the input signal. | 10-03-2013 |
20140312963 | SWITCHABLE CURRENT SOURCE CIRCUIT AND METHOD - a switchable current source in which a reference voltage value to be used in driving the gate of an output transistor is sampled and stored. The reference voltage is derived using a reference current source which feeds a current sensing transistor. The current sensing transistor is turned off when the output transistor is turned off, so that the reference current source then does not consume power. A large reference current Iref can then be used for a short time. | 10-23-2014 |