Abstract: An integrated magnetic power converter for supplying power to a load includes a continuous magnetic structure having first and second oppositely disposed legs, and third and fourth oppositely disposed legs and a magnetic path therebetween. A first winding is wound on the first leg. A second winding is wound on the second leg and is connected to the load. A third winding in series with the second winding is wound on the first leg. A fourth winding is wound on the third leg and is connected to an energy source for supplying power to the converter. A fifth winding is connected in series with the fourth winding and is wound on the fourth leg. A first circuit is connected to the first winding for supplying energy to the first winding, such that when energy is supplied to the first winding, energy is transferred via the second and third windings to the load.
Abstract: An integrated magnetic filter inductor having series and common mode windings includes a magnetic core (44) having a first leg (46), a second leg (48), and a third leg (50). The first leg (46) is connected to the second leg (48) with bridging structures (52) and (54). In a similar manner, the third leg (50) is connected to the second leg (48) with bridging structures (56) and (58). A common mode winding (64) is wound about the bridging structure (52) with a given dot orientation. A common mode winding (66) is wound about the other bridging structure (54) with the same dot polarity. Current flowing into the dot terminal of the common mode winding (64) and out of the dot terminal of the common mode winding (66) result in a net zero magnetic flux induced in the magnetic structure (44). A common mode winding (68) is wound about the bridging structure (56) with a predetermined dot polarity. A common mode winding (70) is wound about the other bridging structure (58) with the same dot polarity.
Abstract: An integrated magnetic power converter for supplying power to a load includes a continuous magnetic structure having first and second legs and a magnetic path therebetween. Two transformers and two inductor devices are included on the core. The converter operates in four states determined by the state of two switches coupled to the transformer.
Abstract: A core for an integrated magnetic power converter includes a continuous magnetic structure having first and second legs and a magnetic flux conducting path therebetween. A primary winding is disposed on the first leg. A first secondary winding is disposed on the first leg. A second secondary winding is disposed on the second leg. The first leg has a cross-sectional area which is greater than the cross-sectional area of the second leg.
Abstract: An extended range regulated power supply which provides a constant output despite extreme variations in line potential, which in the present embodiment may exceed 50%. The power supply maintains high efficiency by operating with a first unregulated supply voltage just above the minimum voltage required by the linear regulator to maintain the desired output voltage. Upon severe low line or drop-out conditions, a second unregulated voltage supply is connected to the input of the linear regulators to maintain constant output voltage. Both of the unregulated potentials are derived from a transformer wherein the second unregulated source will be at least the voltage necessary for the regulators to maintain the desired output voltage under the maximum line drop-out voltage.
Abstract: A pulse width modulated power converter having a single time multiplexed symmetry correction circuit operative to vary the pulse width of output drive pulses applied to an output transformer. As a result, the average current and thus the volt second product seen by each half of the transformer primary winding will be equal under steady state conditions. The transformer drive remains balanced over the entire dynamic range to prevent unwanted saturation of the transformer core.
December 10, 1982
Date of Patent:
November 12, 1985
Edward Y. Chan, Ross Henderson, Anthony J. Vaudo
Abstract: A fixed frequency pulse width modulated current fed inverter power supply with imbalance compensation provided by means of a primary inductor in the input circuit. Energy is coupled between the primary inductor in the input and secondary inductor windings in the output circuits to provide a balanced power supply with good efficiency.
Abstract: An assembly for mounting electronic power devices to a flexible circuit board and in an enclosure. A slotted plastic button is mounted to the built-in heat sink portion of the power device and a spring member is mounted between two such power devices. The spring forces the heat sink surfaces of the power devices against opposite walls of the enclosure and transmits insertion forces to the flexible board during assembly.