US 8,009,447 B2 · Energy effective switching power supply apparatus and an energy effective method thereof

Abstract

An energy effective switching power supply apparatus and an energy effective method thereof. The energy effective switching power supply apparatus includes a power transforming part having first and second coils to induce a voltage to the second coil using interactions between the first and the second coils with respect to the input voltage, a power outputting part to output a sensing signal when it is determined that a first DC voltage output by rectifying and smoothing the voltage induced to the second coil is greater than or equal to a reference voltage level, and a switching controlling part to adjust a switching frequency of a switching device to interrupt a current flowing in the first coil of the power transforming part when the sensing signal is received. Accordingly, a switching loss is controlled and an energy loss is reduced.

Claims5

Dependent claims

A power supply apparatus, comprising:

a transformer to receive an input voltage at a first coil and to output at least one output voltage on at least one second coil;
a controller to switch the transformer ON and OFF at two or more operating frequencies to regulate the at least one output voltage according to a feedback signal;
and
at least one power output part to receive the at least one output voltage from the transformer, to output at least one output DC voltage, and to provide a first feedback signal to the controller to decrease the frequency with which the transformer is switched when the at least one output DC voltage is greater than a reference voltage level.

1 more element

Dependencies are inferred from the claim text.

Facts

Application

12/611,400Filed 3 Nov 2009 · continuation

Priority

KR 2005-8989027 Sep 2005

Published

US 2010/0046254 A125 Feb 2010

Granted

30 Aug 2011

Term ends

Not estimatedThe source records don’t support an estimate.

Classification4 codes

H02M 3/33561
Using semiconductor devices only: having more than one ouput with independent control
H02M 3/33507
Using semiconductor devices only: with automatic control of the output voltage or current, e.g. flyback converters
H02M 1/0006
Details of control, feedback or regulation circuits: arrangements for supplying an adequate voltage to the control circuit of converters
H02M
Apparatus for conversion between ac and ac, between ac and dc, or

Family

Application11/277,659Parent of this continuation · filed 28 Mar 2006

US 2010/0046254 A1Pre-grant publication · published 25 Feb 2010

US 7,663,896 B2Parent of this continuation

US 2007/0070658 A1Published application

US 8,009,447 B2This patent

From the US filing history. Foreign family members aren’t listed.

Energy effective switching power supply apparatus and an energy effective method thereof

Life of this patent

Energy effective switching power supply apparatus and an energy effective method thereof

Life of this patent

Abstract

Claims5