CPC H03K 17/0822 (2013.01) [H02H 3/08 (2013.01); H02H 5/044 (2013.01); H03K 17/18 (2013.01); H03K 2017/0806 (2013.01)] | 20 Claims |
1. An over-temperature protection circuit comprising:
an input for sensing a voltage at a first node arranged between an output terminal and a drain of a first transistor;
a voltage-to-current converter configured to generate a current in dependence upon the voltage, the voltage-to-current converter comprising a resistor which is comprised in a first path arranged between the input and a reference level;
an accumulator including a capacitor arranged to integrate the current or a scaled current obtained from the current and to provide an output; and
a comparator configured to:
determine whether the output exceeds a threshold output, wherein the output exceeding the threshold output is an inference of an over-temperature condition; and
in dependence on the output exceeding the threshold output, generate a signal for signaling that the first transistor is to be switched off.
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