Telefonaktiebolaget Lm Ericsson (publ)

Huajuan Xiao

Donghao Li

Ying Cao

Jiashen Tian

Biao Chen

The present disclosure relates to a magnetic apparatus, and a voltage converter including the same. The magnetic apparatus comprises: a first magnetic core (), including a first planar body (); a second magnetic core (), including a second planar body (); and a third magnetic core (), including a third planar body (). The first, second, and third magnetic core () are sequentially stacked. The magnetic apparatus further comprises: a first column () for a transformer, located between and basically perpendicular to the first planar body () and the second planar body (); at least two second columns () for at least two inductors, located between and basically perpendicular to the second planar body () and the third planar body ().

Magnetic apparatus, and voltage converter including the same

A circuit and a method for controlling a rectifier, and a circuit including the rectifier are disclosed. The rectifier may comprise: a transformer (T); an inductor (Lm) coupled with a primary winding (Np) of the transformer (T) in parallel; at least one switching component (SR, SR) coupled between a secondary winding (Ns, Ns) of the transformer (T) and an output of the rectifier. The method may comprise: sensing (S) a current flowing into a combination of the inductor (Lm) and the primary winding (Np) of the transformer (T); generating (S) an indication voltage, based on the sensed current; comparing (S) the indication voltage and a reference voltage; and driving (S) the at least one switching component (SR, SR), based on a comparison result of the indication voltage and the reference voltage. The timing point for turning on/off the switching component (SR, SR) may be optimized, so as to reduce the power loss and improve the efficiency.

Circuit and method for controlling rectifier, and circuit including the rectifier

The present disclosure provides a power supply system, including: a power source connected between a first node and a second node for applying an input voltage; a first circuit, connected between the first node and a second circuit; and configured to suppress oscillation caused by load variation of a load circuit that is connected between the first node and the second circuit, and to supply power to the load circuit when the power source is temporarily off; the second circuit, having a first port connected to the first circuit, a second port connected to the load circuit, and a third port connected to the second node; and configured to charge the first circuit and supply power to the load circuit; and a third circuit, connected between the first circuit and the load circuit; and configured to suppress a current flowing into the second circuit.

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Beijing, China

Huajuan Xiao