| Patent application number | Description | Published |
|---|
| 20080284511 | Device Comprising a Switching Amplifier and a Load | 11-20-2008 |
| 20090102441 | DC to DC converter - A DC to DC converter comprising: an inductor; a plurality of switches for controlling current flow in the inductor such that the inductor is connected to a supply in a first phase of operation such that the inductor receives energy from the supply, and such that the inductor is connected to an output in a second phase of operation in order to deliver energy to the output; and a controller arranged to monitor the current flow in the inductor at the end of the second phase of operation and to modify the relative duration of the second phase compared to the first phase as a function of the current flow. | 04-23-2009 |
| 20090146623 | DC to DC converter - A DC to DC converter comprising an inductor, first and second electrically controllable switches and a controller, wherein the first electrically controllable switch is interposed between an input node and a first terminal of the inductor and the second electrically controllable switch extends between a second terminal of the inductor and a common node or a ground, and where a first rectifier extends between the common node or ground and the terminal of the inductor and a second rectifier connects the second terminal of the inductor to an output node, wherein the controller controls the operation of the first and second switches to perform voltage step down or step up, as appropriate, to achieve a desired output voltage and wherein a decision about when to switch the first electrically controlled switch is made as a first function of a voltage error between the output voltage and a target output voltage, and an estimate of the current flowing in the inductor. | 06-11-2009 |
| 20090167277 | Common-Mode Voltage Generator for a Battery-Supplied Handset Apparatus - A common-mode voltage generator for a battery-supplied apparatus is provided with a battery voltage ripple-insensitive sensor comprising a voltage dividing circuit and a number of hysteresis comparators, by means of which a battery voltage, or a fraction thereof is compared with a series of reference voltages. These reference voltages are derived from an on-chip voltage by means of said voltage dividing circuit. The hysteresis of said hysteresis comparators is larger than the ripple on said battery voltage. Further there is an adjustable regulation loop. The sensor detects a battery voltage range and adjusts the regulation loop on the basis of this range. The regulation loop provides an output commonmode voltage, which is equal to a fraction, preferably half the battery voltage. | 07-02-2009 |
| 20100219892 | CURRENT LIMITER CIRCUIT - The present invention relates to a circuit configuration for detecting and rapidly limiting large current increase based on high current injection at the output terminal (out). In particular, a gate-controlled switching device (PO), controlled by a driver circuit ( | 09-02-2010 |
| 20100231171 | MULTI-PURPOSE BATTERY CHARGING CIRCUIT - The present invention relates to a multi-purpose battery charging circuit configuration able to be selectively in a simple charge mode when intended for low-end solutions (option | 09-16-2010 |
| 20100270988 | PULSE TIME DETECTOR, A CONTROLLER FOR A SWITCHED MODE POWER SUPPLY, AND A SWITCHED MODE POWER SUPPLY INCLUDING SUCH A CONTROLLER - An apparatus for monitoring the pulse time of switches within a DC to DC power supply, comprising a timing circuit responsive to a switching confirmation signal to commence timing and to monitor for control signals being sent to the switch and to indicate whether elapsed period between the switching confirmation signal and the control signal is too long or too short. | 10-28-2010 |
