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| Number | Title | Issue Date |
| 7408329 | Power supply unit for gas discharge processes A method of generating an output DC voltage of a gas discharge process voltage supply unit, in which in a first voltage transformation stage a first DC voltage is transformed into a second DC voltage of a predetermined voltage range, and the output DC voltage is gen... | 08/05/2008 |
| 7045993 | Apparatus and method for step-down switching voltage regulation A current mode PWM buck regulator is provided. The regulator includes a top-side transistor, a bottom-side transistor, an inductor, a sample-and-hold circuit, a ramp generator, a PWM comparator, an error amplifier, and a current sense amplifier. A current through th... | 05/16/2006 |
| 6965221 | Controller for DC to DC converter A controller for a DC to DC converter is configured to provide a PWM signal in a first state during a first time interval based on an input voltage less a voltage level representative of an output voltage of the DC to DC converter. The controller may provide the PWM... | 11/15/2005 |
| 4595975 | Efficient power supply suitable for inductive loads Disclosed is an Electrical Driving and Recovery System for a High Frequency environment. The recovery system can be applied to drive present day direct-current or alternating-current loads for better efficiency. It has a low-voltage source coupled to a vi... | 06/17/1986 |
