SWITCHING RECTIFIER CIRCUIT AND BATTERY CHARGER USING SAME
First Claim
1. A switching rectification circuit, comprising:
- a first switch connected between a terminal to which a first AC voltage is applied and a terminal to which a DC voltage is applied;
a second switch connected between a terminal to which a second AC voltage is applied and the terminal to which the DC voltage is applied;
a third switch connected between the terminal to which the first AC voltage is applied and a terminal to which a reference voltage is applied;
a fourth switch connected between the terminal to which the second AC voltage is applied and the terminal to which the reference voltage is applied;
a first comparison circuit adapted to generate from the first AC voltage and the DC voltage a first on detection signal and a first off detection signal individually;
a second comparison circuit adapted to generate from the second AC voltage and the DC voltage a second on detection signal and a second off detection signal individually; and
a timing generator adapted to control turning on and off of the first to fourth switches based on at least outputs of the first and second comparison circuits.
1 Assignment
0 Petitions
Accused Products
Abstract
A switching rectifier circuit according to the present invention includes: a first switch coupled between a first alternating-current voltage and a direct-current voltage; a second switch coupled between a second alternating-current voltage and the direct-current voltage; a third switch coupled between the first alternating-current voltage and a reference voltage; a fourth switch coupled between the second alternating-current voltage and the reference voltage; a first comparator circuit that generates each of a first power-on detection signal and a first power-off detection signal from the first alternating-current voltage and the direct-current voltage; a second comparator circuit that generates each of a second power-on detection signal and a second power-off detection signal from the second alternating-current voltage and the direct-current voltage; and a timing generator that controls the switches to be turned on/off on the basis of outputs of at least the comparator circuits.
-
Citations
24 Claims
-
1. A switching rectification circuit, comprising:
-
a first switch connected between a terminal to which a first AC voltage is applied and a terminal to which a DC voltage is applied; a second switch connected between a terminal to which a second AC voltage is applied and the terminal to which the DC voltage is applied; a third switch connected between the terminal to which the first AC voltage is applied and a terminal to which a reference voltage is applied; a fourth switch connected between the terminal to which the second AC voltage is applied and the terminal to which the reference voltage is applied; a first comparison circuit adapted to generate from the first AC voltage and the DC voltage a first on detection signal and a first off detection signal individually; a second comparison circuit adapted to generate from the second AC voltage and the DC voltage a second on detection signal and a second off detection signal individually; and a timing generator adapted to control turning on and off of the first to fourth switches based on at least outputs of the first and second comparison circuits. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 21, 22)
-
-
13. A switching rectification circuit, comprising:
-
a first switch connected between a terminal to which a first AC voltage is applied and a terminal to which a DC voltage is applied; a second switch connected between a terminal to which a second AC voltage is applied and the terminal to which the DC voltage is applied; a third switch connected between the terminal to which the first AC voltage is applied and a terminal to which a reference voltage is applied; a fourth switch connected between the terminal to which the second AC voltage is applied and the terminal to which the reference voltage is applied; a first comparison circuit adapted to generate from the first AC voltage and the DC voltage a first detection signal; a second comparison circuit adapted to generate from the second AC voltage and the DC voltage a second detection signal; a third comparison circuit adapted to generate from the first AC voltage and the reference voltage a third detection signal; a fourth comparison circuit adapted to generate from the second AC voltage and the reference voltage a fourth detection signal; and a timing generator adapted to control turning on and off of the first to fourth switches based on at least outputs of the first to fourth comparison circuits. - View Dependent Claims (14, 15, 16, 18, 19)
-
-
17. (canceled)
-
20. (canceled)
-
23. (canceled)
-
24. (canceled)
Specification