Comparator with reduced power consumption

A direct current to direct current, DC-DC, converter comprising at least one comparator, the at least one comparator further comprising positive and negative input terminals;

• first, second and third biasing current sources configured to output first, second and third biasing currents;
• an input circuit driven by the first biasing current source, wherein the input circuit comprises an amplification circuit coupled to the positive and negative input terminals and a load circuit configured to provide positive feedback for the amplification circuit to enable hysteresis;
• first and second current mirroring circuits for forming, with the input circuit, first and second current mirrors producing first and second current mode signals;
• first and second current-controlled driver circuits configured to be controlled by the second and third biasing currents, respectively, and further by the first and second current mode signals, respectively;
• a latch circuit comprising first and second cross-coupled complementary metal-oxide semiconductor, CMOS, transistors acting together as a latch having substantially rail-to-rail output voltage swing and being driven, respectively, by the first and second current-controlled driver circuits;
• and
• an output circuit implementing a current starved inverter for limiting a shoot-through current from a positive power supply to a negative power supply, wherein positive and negative inputs of the output circuit are coupled, respectively, to output terminals of the latch circuit.