SHORT-CIRCUIT PROTECTION DETECTION CIRCUIT AND DETECTION METHOD

A short-circuit protection detection circuit (101), comprising a starting circuit (11) and a comparator (15), and further comprising a positive temperature coefficient current generation circuit (12) and a short-circuit protection threshold generation circuit (13). The positive temperature coefficient current generation circuit (12) respectively applies, to the two bipolar transistors having different current densities, two currents of the same magnitude generated by mirroring, so as to generate a difference between the base-emitter voltages of two bipolar transistors, the difference between the voltages is proportional to the absolute temperature, and then is converted, by means of a resistor, to a positive temperature coefficient current for short-circuit protection threshold compensation; the short-circuit protection threshold generation circuit (13) is configured to apply, to two resistors composed by different numbers of unit resistors, two positive temperature coefficient currents generated by mirroring