Title:
電源
Document Type and Number:
Japanese Patent JP4317881
Kind Code:
B2
Abstract:
A power supply (100) comprises: a rectifier (10); a power preconverter (20) coupled to the rectifier (10); a switched-mode power supply circuit (30) coupled to the power preconverter (20); and, a phase control circuit (21, 22) for synchronizing operation of the power preconverter (20) with operation of the switched-mode power supply circuit (30). An energy storage device (C1) may be coupled to the power preconverter (20) and to the switched-mode power supply circuit (30). A preconverter switch (Q2) conducts during each time interval that a power switch (Q1) in the switched-mode power supply circuit (30) conducts in order, for example, to charge the energy storage device (C1). The preconverter switch (Q2) begins conducting only after each time interval begins and always stops conducting before each time interval ends. In a portion of the time interval after the preconverter switch (Q2) has stopped conducting, a current can flow directly from the power preconverter (20) to the switched-mode power supply circuit (30) without, for example, charging the energy storage device (C1).
Inventors:
Miu Chiemburger, Manfred
Application Number:
JP2007068040A
Publication Date:
August 19, 2009
Filing Date:
March 16, 2007
Export Citation:
Assignee:
RCA THOMSON LICENSING CORPORATION
International Classes:
H02M3/28; H02M1/00; H02M1/42; H02M7/12
Domestic Patent References:
| JP2068895A | ||||
| JP6057088U |
Attorney, Agent or Firm:
Riki Kikoshi