Patent application number | Description | Published |
20120300515 | AC/DC Converter with a PFC and a DC/DC Converter - Disclosed is a power converter including a power factor corrector and a DC/DC converter and a power conversion method. | 11-29-2012 |
20130033910 | Power Converter Circuit - A power converter includes a DC/AC converter with input terminals and output terminals. A DC/DC converter includes input terminals for receiving a DC input voltage and output terminals for providing a DC output voltage. The output terminals are coupled to the input terminals of the DC/AC converter. The DC/DC converter also includes a control circuit that is configured to control an output current of the DC/DC converter dependent on a reference signal. The reference signal has a frequency that is dependent on a frequency of the AC output voltage. | 02-07-2013 |
20140085073 | DIRECTION INDICATOR CIRCUIT FOR CONTROLLING A DIRECTION INDICATOR IN A VEHICLE - A direction indicator circuit for controlling a direction indicator in a vehicle is provided. The direction indicator circuit may include a first terminal for connecting to a supply voltage terminal; a second terminal for connecting to a lighting means of a direction indicator and to a direction indicator switch; and a third terminal for connecting to a capacitor; wherein the direction indicator circuit is configured to provide the direction indicator with a current during an on state and with no current during an off state, wherein the duration of the on state and the duration of the off state are determined by the size of the capacitor; wherein the capacitor is discharged essentially constantly during the on state, and wherein the capacitor is charged essentially constantly during the off state. | 03-27-2014 |
20140085074 | DIRECTION INDICATOR CIRCUIT FOR CONTROLLING A DIRECTION INDICATOR IN A VEHICLE - A direction indicator circuit for controlling a direction indicator may include: a first terminal for connecting to a supply voltage terminal; a second terminal for connecting to a direction indicator switch and a lighting means; a third terminal for connecting to a capacitor; wherein the direction indicator circuit is designed to provide the lighting means with a current during an on state and with no current during an off state, wherein the duration of the on state and the duration of the off state are determined by a voltage at the capacitor; wherein the direction indicator circuit has a first and a second circuit, wherein the capacitor provides the supply voltage for the first and second circuits during the on state; wherein the current which flows through the first circuit has a negative temperature coefficient, and the current which flows through the second circuit has a positive temperature coefficient. | 03-27-2014 |
20140085075 | DIRECTION INDICATOR CIRCUIT FOR CONTROLLING A DIRECTION INDICATOR IN A VEHICLE - In various embodiments, a direction indicator circuit for controlling a direction indicator in a vehicle is provided. The direction indicator circuit may include: a first terminal for connecting to a supply voltage; a second terminal for connecting to a direction indicator switch and a lighting means; a third terminal for connecting to a capacitor; and a switch for providing a current, wherein the switch is connected to the first terminal and to the second terminal; wherein the direction indicator circuit is designed to provide the lighting means with a current during an on state using the switch and with no current during an off state; wherein during the on state the direction indicator circuit checks the provided current at least once and goes into the off state if the check detects a current which is lower than a predefined current. | 03-27-2014 |
Patent application number | Description | Published |
20080285623 | METHOD AND APPARATUS FOR THERMAL PROTECTION IN AN INTEGRATED CIRCUIT - Some embodiments discussed relate to an apparatus comprising a temperature sensor disposed in an integrated circuit, the temperature sensor including a bipolar transistor having a collector coupled to a portion of a substrate of the integrated circuit, and a bandgap reference circuit configured to generate a reference voltage, and a comparator coupled to the temperature sensor and the bandgap reference circuit, the comparator configured to receive a first voltage from the emitter of the bipolar transistor and the reference voltage from the bandgap reference circuit and generate a switch-off signal based on a voltage difference between the first voltage and the reference voltage. | 11-20-2008 |
20140103861 | Active Power Factor Corrector Circuit - In accordance with an embodiment, an electronic device includes a controller configured to be coupled to a first switch of a power factor corrector. The controller is configured to produce a variable switching frequency depending on a load current. For a first load current, the controller is configured to produce a first switching frequency, and for a second load current, the controller is configured to produce a second switching frequency. | 04-17-2014 |
20140211526 | Active Power Factor Corrector Circuit - In accordance with an embodiment, an electronic device includes a controller configured to apply slope compensation to a reference signal in a power factor corrector. The device also configured to adjust the slope compensation based on an input voltage of the power factor corrector. | 07-31-2014 |