Start-up circuit for providing a start-up voltage to an...

Details Start-up circuit for providing a start-up voltage to an... Start-up circuit for providing a start-up voltage to an...

2005-08-09

2008-09-30

Nguyen, Matthew V (Department: 2838)

Electric power conversion systems

Current conversion

With starting arrangement

C363S050000, C363S150000

Reexamination Certificate

active

07430131

ABSTRACT:
A startup circuit for providing a startup voltage from a high voltage DC bus voltage to an application circuit including an integrated circuit package for at least a control circuit for driving at least one power switch of the application circuit; a dropping resistor in the integrated circuit package having a first terminal for coupling to the high voltage DC bus and for dropping the high voltage DC bus voltage to a reduced voltage level at a second terminal; and a low voltage regulator in the package coupled to the second terminal for providing a startup regulated low voltage DC output at a preset level for powering at least one part of the application circuit during startup of the application circuit. The application circuit may be, for example, a switching mode power supply.

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Communication dated Jun. 5, 2007 in corresponding German Patent Application No. 10 2005 037 409.3-32.
Office Action dated Apr. 8, 2008 in corresponding Japanese Patent Application No. 2005-230507 with English language translation.

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