(19)
(11) EP 1 758 234 A8

(12) CORRECTED EUROPEAN PATENT APPLICATION
Note: Bibliography reflects the latest situation

(15) Correction information:
Corrected version no 1 (W1 A2)

(48) Corrigendum issued on:
04.07.2007 Bulletin 2007/27

(43) Date of publication:
28.02.2007 Bulletin 2007/09

(21) Application number: 06254462.2

(22) Date of filing: 25.08.2006
(51) International Patent Classification (IPC): 
H02M 1/00(2007.01)
 H02M 3/335(2006.01)
(84) Designated Contracting States:
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR
Designated Extension States:
AL BA HR MK YU

(30) Priority: 26.08.2005 US 213252

(71) Applicant: Power Integrations, Inc.
San Jose, California 95138 (US)

(72) Inventors:
  • Matthews, David Michael Hugh
    Sunnyvale 94085, California (US)
  • Djenguerian, Alex B.
    Saratoga 95070, California (US)
  • Wong, Kent
    Fremont 94555, California (US)
  • Balakrishnan, Balu
    Saratoga 95070, California (US)

(74) Representative: Oxley, Robin John George 
Marks & Clerk 90 Long Acre
London WC2E 9RA
London WC2E 9RA (GB)

   


(54) Method and apparatus to select a parameter/mode based on a time measurement


(57) Techniques are disclosed to select functional parameters and/or operating modes of a circuit based on a time measurement are disclosed. One example integrated circuit (303) includes a threshold detection and timing circuit (349) that is coupled to measure a signal during an initialization period of the integrated circuit (303) from a multifunction capacitor that is to be coupled to a first terminal of the integrated circuit (303). A selection circuit (351) is coupled to the threshold detection and timing circuit (349) to select a parameter/mode of the integrated circuit (303) in response to the measured signal from the multi function capacitor during the initialization period of the integrated circuit (303). The multi function capacitor is coupled to provide an additional function for the integrated circuit (303) after the initialization period of the integrated circuit (303) is complete.