Patent ID: 8093873
Filing Date: 2012-01-10
Classification: G05F,Y02E

Abstract:
1. A power converter for converting the power provided by a power source, wherein the power converter is a hysteretic input-regulating high-output impedance power converter and provides an output current at an output voltage that is greater than and not dependent on the input voltage, said power converter having a circuit comprising: (i) first and second input terminals for connection to a power source providing an input voltage; (ii) a capacitor having a first terminal connected to the first input terminal and a second terminal connected to the second input terminal; (iii) a hysteretic voltage comparator having at least three terminals, wherein a first terminal is an input terminal connected to the first terminal of the capacitor, a second terminal is an input terminal for inputting a reference voltage and a third terminal is an output terminal; (iv) a switch having a first terminal connected to the third terminal of the hysteretic voltage comparator to thereby receive the output signal from the hysteretic voltage comparator, a second terminal connected to the second terminal of the capacitor and a third terminal, whereby the output signal from the hysteretic voltage comparator serves to open and close the switch such that when the voltage on the capacitor exceeds the high threshold voltage of the hysteretic voltage comparator the switch is closed and when the voltage on the capacitor decreases to the low threshold voltage of the hysteretic voltage comparator the switch is open; (v) an inductor having a first terminal connected to the first terminal of the capacitor and a second terminal connected to the third terminal of the switch; (vi) an output rectifier having a first terminal connected to the second terminal of the inductor and a second terminal; and (vii) first and second output terminals, wherein the first output terminal is connected to the second terminal of the output rectifier and the second output terminal is connected to the second terminal of the switch.