DEVICE FOR CURRENT OVERLOAD PROTECTION OF DC-TO-DC CONVERTER Russian patent published in 2009 - IPC H03K17/08 H02H7/12 

FIELD: radio engineering.

SUBSTANCE: proposed device can be used in power supplies of radio electronic hardware. It comprises voltage comparator with its first input connected, via first resistor, to current transducer first output and the device first input, while, via second resistor, it is connected with first output of equalisation potentiometre. Second input of voltage comparator is connected, via third resistor, with current transducer second output and the device second input. Second input of voltage comparator is connected, via fourth resistor, with the second output of equalisation potentiometre with its wiper being connected with common bus. Proposed device comprises also first and second diodes, short-time drive pulse generator with its output connected, via first diode, with comparator first input, and DC converter supply switch-off circuit with its input connected, via second diode, with comparator output and its output connected to the device output.

EFFECT: higher reliability and safety.

3 cl, 1 dwg