Configuration method for a power supply controller and a controller employing same
First Claim
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.
3 Assignments
0 Petitions
Accused Products
Abstract
The present application is directed at pin programming od controllers for power converters and provides for the programming of a plurality of different controller parameters using a single programming resistor. The value of the programming resistor is used as a pointer to select a table storing a plurality of different settings for the controller.
52 Citations
24 Claims
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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:
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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, and c) 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. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 21)
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9. A configurable controller for a switching power converter, the controller being provided in an integrated circuit and comprising:
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only one programming pin to which at least one external programming component is connectable; a measurement circuit for performing a single measurement at the programming pin of the at the at least one external programming component; wherein the controller is adapted to employ said single measurement on its own as a reference to retrieve three or more stored settings for the controller and to configure the controller with the retrieved three or more stored settings. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16, 17, 18, 22)
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19. A method of manufacturing a configurable controller for a power supply, the method comprising the steps of:
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a) designing the controller as an integrated circuit with a pin programming feature provided on only one pin of the integrated circuit; b) fabricating the controller with a memory as an integrated circuit package with pins of which one is the pin of the pin programming feature; and b) storing a plurality of different configurations within the memory, where each individual configuration provides individual settings for a plurality of different operating parameters of the configurable controller, and where the pin programming feature determines the choice of configuration to be used by the controller such that more than three parameters are set solely by the value of resistance presented at the pin of the pin programming feature of the integrated circuit. - View Dependent Claims (23)
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20. A method of pin programming a controller for a power supply, the method comprising the steps of:
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a) taking a single measurement at a pin of the controller; b) using said single measurement on its own to select a stored set of settings from a plurality of stored sets of settings, wherein each stored set of settings comprises more than three operating parameters of the controller; c) setting operating parameters of the controller in accordance with the retrieved set of settings. - View Dependent Claims (24)
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Specification