Bidirectional thermal trimming of electrical resistance

H - Electricity – 01 – L

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H01L 27/08 (2006.01) H01C 17/26 (2006.01) H01L 21/02 (2006.01)

Patent

CA 2519690

There are described various methods and circuits for trimming the parameter value of a thermally mutable electrical component in two directions. A sequence of heat pulses is selected as a function of thermal history using an adaptive trimminig algorithm, where parameters of the sequence of heat pulses are based on a resulting impact of previous heating pulses. Direction of trimming, trimming increment, and remaining trimming distance can all be used to determine the parameters of succeding heat pulses, wherein the parameters of the pulses can be, for the example, amplitude, duration, and time interval between pulses.

L'invention concerne des procédés et des circuits d'ajustage de la valeur de paramètre d'un composant électrique thermiquement variable dans deux directions. Une séquence de vagues de chaleur est choisie comme fonction d'un historique thermique, au moyen d'un algorithme d'ajustage adaptatif, les paramètres de la séquence de vagues de chaleur étant basés sur l'impact résultant des vagues de chaleur précédentes. Le sens d'ajustage, l'augmentation de l'ajustage et la distance d'ajustage restante peuvent être utilisés pour déterminer les paramètres des vagues de chaleur ultérieures, lesdits paramètres pouvant être, par exemple, l'amplitude, la durée et l'intervalle de temps entre les vagues.

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