Patent ID: 7965527

Claim:
A device for protecting an electronic converter, the device comprising a comparator having an output as well as non-inverting and inverting inputs for receiving a first input signal indicative of the load applied to said converter and a second input signal indicative of the temperature of said converter, the comparator being in a non-inverting Schmitt-trigger configuration having an input-output characteristic with hysteresis, whereby said output is switched from a first value to a second value to switch off said electronic converter as said first input signal exceeds a first threshold value and said output is switched back from said second value to said first value to restart said electronic converter as said first input signal falls below a second threshold value, said second threshold value being lower than said first threshold value, and both said first and second threshold values being a function of said second input signal wherein said Schmitt-trigger configuration includes a feedback path between said output and said non-inverting input of said comparator, said feedback path including the parallel connection of a constant voltage source and a diode.