Prexl
Franz Prexl, Oberding DE
Patent application number | Description | Published |
---|---|---|
20090072755 | LIGHT-EMITTING SEMICONDUCTOR DEVICE DRIVER AND METHOD - An electronic device includes circuitry for driving a light-emitting diode (LED) or other light-emitting semiconductor device. The circuitry includes a first switch (NM | 03-19-2009 |
20110068754 | ELECTRONIC DEVICE AND METHOD FOR DC-DC CONVERSION - An electronic device for DC-DC conversion of an input voltage into an output voltage is provided. The electronic device includes a current mode control loop for controlling a sensed current of the DC-DC conversion by comparing a voltage level indicating a magnitude of the sensed current with a reference voltage level indicating the maximum admissible magnitude of the sensed current. The reference voltage level is dynamically adjusted in response to a change of an input voltage level. | 03-24-2011 |
Franz Prexl, Niederding DE
Patent application number | Description | Published |
---|---|---|
20080258795 | LOW POWER OSCILLATOR - A CMOS low frequency oscillator circuit comprising an amplifier ( | 10-23-2008 |
20090096388 | DRIVER FOR LIGHT EMITTING SEMICONDUCTOR DEVICE - An electronic device is provided comprising a driver for light emitting semiconductor devices. The driver includes a first MOS transistor (MN | 04-16-2009 |
20130320949 | ELECTRONIC DEVICE FOR AVERAGE CURRENT MODE DC-DC CONVERSION - An average current mode buck-boost DC to DC converter has a buck stage coupled between an input voltage source terminal and an output terminal. A boost stage is coupled between the input voltage source terminal and the output terminal. A current ramp control circuit generates a ramp signal for driving the buck and boost stages, the ramp signals being coupled to the buck and boost stages. A constant voltage related to the desired output voltage by a constant is applied directly to both a voltage control feedback loop for adjusting the output voltage and directly to an input to the current ramp control circuit, whereby the output voltage can be shifted from one voltage to another by feedforward control. | 12-05-2013 |
20150054478 | ELECTRONIC DEVICE FOR AVERAGE CURRENT MODE DC-DC CONVERSION - An average current mode buck-boost DC to DC converter has a buck stage coupled between an input voltage source terminal and an output terminal. A boost stage is coupled between the input voltage source terminal and the output terminal. A current ramp control circuit generates a ramp signal for driving the buck and boost stages, the ramp signals being coupled to the buck and boost stages. A constant voltage related to the desired output voltage by a constant is applied directly to both a voltage control feedback loop for adjusting the output voltage and directly to an input to the current ramp control circuit, whereby the output voltage can be shifted from one voltage to another by feedforward control. | 02-26-2015 |
Markus Prexl, Schierling DE
Patent application number | Description | Published |
---|---|---|
20140167460 | Control Element for a Vehicle Seat - A control element for a vehicle seat includes a bladder configured to be filled with a pressure medium and which includes first and second films connected together along a connecting seam to form a bladder chamber. The connecting seam may have a shape of a polygon, e.g., a square or rectangle, with rounded corners, wherein the sides connecting the corners are curved in a concave manner toward the interior of the polygon. The shape of the connecting seam and thus the shape of the resulting bladder chamber may prevent or reduce the occurrence of constrictions and/or kinks when filling the bladders, which may ensure a reliable and durable operation of the control element. | 06-19-2014 |