Power supply adapter circuit

H - Electricity – 02 – M

Patent

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Details

H02M 3/156 (2006.01) H04M 19/08 (2006.01)

Patent

CA 2245984

The present invention relates to an adapter circuit PSA intended to apply to a load an output voltage VDD which has a regulated value, comprising: . a comparator module OA, and . a regulation module RM for adjusting the value of the output voltage VDD to a predetermined nominal regulation value Vreg0. The invention makes it possible to inhibit the regulation module RM when the output of the adapter circuit PSA is connected to an external power supply source which imposes on said output a voltage Vext whose value is higher than the nominal regulation value Vreg0.

Cette invention concerne un circuit d'adaptateur (PSA) conçu pour appliquer une charge à une tension de sortie (VDD) offrant une valeur régulée. Cette invention est constituée des éléments suivants : le module d'un comparateur (OA) et un module de régulation (RM) servant à ajuster la valeur de la tension de sortie (VDD) avec une valeur de régulation nominale prédéterminée (VregO). Cette invention permet d'invalider le module de régulation (RM) lorsque la sortie du circuit de l'adaptateur (PSA) est reliée à une source d'alimentation externe imposant à cette sortie une tension (Vext) dont la valeur est plus élevée que la valeur de régulation nominale (VregO).

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