Power supply with integrator for controlling current

Patent metadata

Field	Value
Publication number	US-8988904-B2
Application number	US-201213421994-A
Country	US
Kind code	B2
Filing date	Mar 16, 2012
Priority date	Mar 16, 2011
Publication date	Mar 24, 2015
Grant date	Mar 24, 2015

Abstract

The present invention relates to a power supply for controlling current that uses a flyback converter for electrical insulation between a load line unit and the power supply for controlling current. In a transformer (a flyback converter) having a flyback structure in the present invention, disclosed is a device which expects a current of the second coil by sensing a current of the first coil of the transformer, and controls the current flowing through the load line unit. A level detector is included, which updates a duty time or an on-time of the switch by transferring a reset signal to an integrator and a second sampler in accordance with a cycle of an input power. As a result, it is possible to reduce power loss by increasing a power factor through the adjustment of the phase of the current of the load line unit and an input voltage.

First claim

What is claimed is:

1. A power supply for controlling current, the power supply comprising:
a transformer which converts a first current into a second current and supplies the second current to a load line unit;
a sampler which samples a peak value of the first current;
an integrator which uses a signal proportional to the peak value of the first current and outputs a signal proportional to an average value of a current flowing through the load line unit; and
a switching con…

Assignees

• Kim Bonkee
• Hideep Inc

Inventors

• Kim Bonkee

Classifications

• H02M2001/0009

  Electricity · mapped topic

• H02M3/33523 Primary

  Electricity · mapped topic

• Y02B70/126

  Cross-Sectional Technologies · mapped topic

• H02M1/4258

  Electricity · mapped topic

• H02M1/0009

  Electricity · mapped topic