The invention discloses a motor locked-rotor protection
driving circuit, which relates to the field of motor locked-rotor protection, and is characterized in that a first thermosensitive detection unit and a second thermosensitive detection unit are respectively connected between two output ends of a motor and a corresponding power switch unit in series; and the control module automatically pulls down the control end of the connected power switch unit to be below a
cut-off threshold value during stalling, so that a corresponding current path is
cut off, and automatic stalling protection is realized. Although the scheme is realized on the basis of discrete electronic elements, a current sampling
resistor, a
voltage comparator and a latch logic circuit which are necessary in a traditional discrete scheme are omitted through a thermal-electric direct linkage mechanism, and self-triggering protection can be completed only through few devices such as a
thermistor, a bipolar
transistor and a bias
resistor; according to the invention, customization limitation of a special driving
chip is avoided, defects of
large size, high cost and low reliability of a traditional
discrete circuit are overcome, a topological structure is obviously simplified, and
system cost, size and
failure rate are reduced.