Class / Patent application number | Description | Number of patent applications / Date published |
363022000 | Double-ended (i.e., push-pull), self-oscillating type | 7 |
20080205091 | Self-oscillating power converter - A push-pull type self-oscillating power converter uses a main power transformer connected to a current transformer in series in such a way that a secondary current flowing through secondary sides of the two transformers is feedback to the primary side of the current drive transformer to generate a drive current for driving two switches. The drive current is proportional to the secondary current in the secondary side of the main power transformer. | 08-28-2008 |
20080253151 | METHOD AND APPARATUS TO REDUCE DYNAMIC Rdson IN A POWER SWITCHING CIRCUIT HAVING A III-NITRIDE DEVICE - A method of preventing the Rdson of a III-V Nitride power switching circuit from varying over time. The method includes biasing the switch to a pre-bias voltage level just below turn ON when the switch is OFF, wherein traps are discharged when the switch is biased to the pre-bias voltage level just below turn ON and the varying of the Rdson over time due to traps is reduced. The method can be employed in DC-DC converter circuits having III-V Nitride control and synchronous switches connected at a switching node. | 10-16-2008 |
20130141949 | DC-TO-DC VOLTAGE REGULATOR AND ITS OPERATING METHOD THEREOF - A method for operating the DC-to-DC voltage regulator including plural active switches and plural inductors is disclosed. The method including the steps of: turning on the first active switch, and then turning off the first active switch when the current flowing in the first inductor is equal to zero; turning on the third active switch, and then turning off the third active switch when the current flowing in the second inductor is equal to zero; turning on the second active switch, and then turning off the second active switch when the current flowing in the first inductor is equal to zero; and turning on the fourth active switch, and then turning off the fourth active switch when the current flowing in the second inductor is equal to zero. | 06-06-2013 |
20140169044 | SELF-EXCITATION PUSH-PULL TYPE CONVERTER - A self-excited push-pull converter, comprising a Jensen circuit, characterized in that a two-terminal network with an electrical property of passing high frequencies and blocking low frequencies exists between a terminal of a magnetic saturation transformer primary winding and a terminal of a main transformer primary winding in said Jensen circuit, i.e. said magnetic saturation transformer primary winding is connected in parallel with said main transformer primary winding through said two-terminal network. The self-excited push-pull converter of the present invention has a good self-protection capability and can be restored by itself to normal operation after overcurrent and short circuit disappear. | 06-19-2014 |
20140177291 | SELF-EXCITED PUSH-PULL CONVERTER - A self-excited push-pull converter, which comprises a Royer circuit, wherein an inductor is further connected between a supply terminal of said Royer circuit and a center tap of primary windings of a transformer in said Royer circuit, an inductance amount of said inductor is less than 1/10 of the inductance amount of one of the primary windings of the transformer, and the center tap of said primary windings is a connection point between the two primary windings of said transformer. The self-excited push-pull converter of the present invention show high consistency, easy adjustment, low requirements on the manufacturing process and good short circuit protection performance. | 06-26-2014 |
363023000 | With automatic control of the magnitude of output voltage or current | 2 |
20100232189 | METHOD FOR PORTIONING OUTPUT CURRENT OF A DC-DC CONVERTER - At least some aspects of the invention are directed to methods and apparatus for controlling an uninterruptible power supply and subsystems of a UPS. A first aspect of the invention is directed to a method of controlling a DC-DC converter having a predetermined maximum peak load current value. The DC-DC converter has first and second outputs to couple to a load with a capacitor coupled across the first and second outputs. The method includes in a first mode of operation, charging the capacitor to a predetermined output voltage value, and in a second mode of operation, providing output current having the maximum peak load current value to a load coupled to the output of the DC-DC converter, wherein a first portion of the output current is provided by the DC-DC converter and a second portion of the output current is provided by discharging the capacitor to a voltage value that is less than the predetermined output voltage value. | 09-16-2010 |
20110157926 | INTEGRATED CIRCUIT FOR AN OSCILLATOR STRUCTURED TO DRIVE A CONTROL DEVICE OF A SWITCHING RESONANT CONVERTER - A circuit for an oscillator structured to drive a control device of a switching resonant converter; the converter having a switching circuit structured to drive a resonant load provided with at least one transformer with at least a primary winding and at least a secondary winding. The control device structured to drive the switching circuit, and the converter structured to convert an input signal into an output signal, the integrated circuit includes a first circuit structured to charge and discharge a capacitor by a first current signal such that the voltage at the ends of the capacitor is between first and second reference voltages, the current signal having a second current signal indicating the output voltage of the converter; the integrated circuit including a second circuit structured to rectify a signal indicating the current circulating in the primary winding. | 06-30-2011 |