Patent ID: 6285091
Filing Date: 2001-09-04
Classification: H02J

Abstract:
A voltage source switch for outputting an output voltage corresponding to one of a first voltage source and a second voltage source, said voltage source switch comprising:a comparator for comparing voltages on the first and second voltage sources and producing first and second switch control signals, wherein said comparator includes at least:a hysteresis circuit that generates at least one hysteresis adjustment to resist improper switching following a switching action; anda blanking circuit that generates a blanking period wherein following a switching action said voltage source switch does not switch the output voltage during the blanking period;a first switch circuit that couples the first voltage source to the output voltage when the first switch control signal is at a first state and decouples the first voltage source from the output voltage when the first switch control signal is at a second state; anda second switch circuit that couples the second voltage source to the output voltage when the second switch control signal is at a first state and decouples the second voltage source from the output voltage when the second switch control signal is at a second state.