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Configuration method for a power supply controller and a controller employing same

  • US 9,996,126 B2
  • Filed: 09/20/2011
  • Issued: 06/12/2018
  • Est. Priority Date: 10/14/2010
  • Status: Active Grant
First Claim
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1. A method of configuring a controller for a switching power supply, the controller being configured to provide switching signals to operate one or more switches at a switching frequency, the controller having a plurality of settings determining operating parameters for the switching of the one or more switches in the switching circuit and the controller being provided in an integrated circuit having a plurality of pins of which only one is a configuration pin configured for pin programming by presenting an impedance to the pin, the method comprising the steps of:

  • a) performing a measurement of the impedance presented at the configuration pin,b) using said measurement of the impedance on its own to retrieve three or more stored settings, andc) configuring the controller with the retrieved three or more stored settings to control the operation of the one or more switches at the switching frequency.

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