APPARATUS FOR PREVENTING CAPACITOR CHARGER FROM OVERCHARGING AND METHOD THEREOF
First Claim
1. An apparatus for controlling a charging circuit, the apparatus comprising:
- a first comparator, coupled to the charging circuit, for receiving a voltage level and comparing the voltage level with a reference voltage level to generate a first indication signal, wherein the voltage level corresponds to an output voltage of the charging circuit;
a second comparator, for receiving a control value and comparing the control value with a threshold value to generate a second indication signal; and
a controller, coupled to the charging circuit, the first comparator, and the second comparator, the controller for generating a control signal according to the first indication signal and the second indication signal for turning the charging circuit on and off, and further for generating the control value according to the control signal.
1 Assignment
0 Petitions
Accused Products
Abstract
The present invention provides an apparatus for controlling a capacitor charging circuit and a method thereof. The apparatus includes a first comparator, a second comparator, and a controller. The first comparator, which is coupled to the charging circuit, receives a voltage level and compares the voltage level with a reference voltage level to generate a first indication signal. The voltage level corresponds to an output voltage of the charging circuit. The second comparator receives a control value and compares the control value with a threshold value to generate a second indication signal. The controller, which is coupled to the charging circuit, the first comparator and the second comparator, generates a control signal according to the first indication signal and the second indication signal to turn the charging circuit on and off, and further generates the control value according to the control signal.
-
Citations
19 Claims
-
1. An apparatus for controlling a charging circuit, the apparatus comprising:
-
a first comparator, coupled to the charging circuit, for receiving a voltage level and comparing the voltage level with a reference voltage level to generate a first indication signal, wherein the voltage level corresponds to an output voltage of the charging circuit;
a second comparator, for receiving a control value and comparing the control value with a threshold value to generate a second indication signal; and
a controller, coupled to the charging circuit, the first comparator, and the second comparator, the controller for generating a control signal according to the first indication signal and the second indication signal for turning the charging circuit on and off, and further for generating the control value according to the control signal. - View Dependent Claims (2, 3, 4, 5, 6)
-
-
7. A method for controlling a charging circuit, the method comprising:
-
comparing a voltage level with a reference voltage level to generate a first indication signal, wherein the voltage level corresponds to an output voltage of the charging circuit;
comparing a control value with a threshold value to generate a second indication signal;
generating a control signal according to the first indication signal and the second indication signal, the control signal for turning the charging circuit on and off; and
generating the control value according to the control signal. - View Dependent Claims (8, 9, 10, 11)
-
-
12. An apparatus for controlling a charging circuit, the apparatus comprising:
-
a first detector coupled to the charging circuit, the first detector for detecting a voltage level at a first time and generating a first indication value corresponding to the voltage level at the first time, wherein the voltage level corresponds to an output voltage of the charging circuit;
a second detector coupled to the charging circuit, the second detector for detecting the voltage level at a second time after the first time and generating a second indication value corresponding to the voltage level at the second time; and
a controller coupled to the charging circuit, the first detector, and the second detector, the controller for receiving the first and second indication values, and further for generating a control signal according to the first and second indication values for turning the charging circuit on and off. - View Dependent Claims (13, 14, 15)
-
-
16. A method for controlling a charging circuit, the method comprising:
-
detecting a voltage level at a first time and generating a first indication value corresponding to the voltage level at the first time, the voltage level corresponding to an output voltage of the charging circuit;
detecting the voltage level at a second time after the first time and generating a second indication value corresponding to the voltage level at the second time; and
generating a control signal according to the first indication value and the second indication value for turning the charging circuit on and off. - View Dependent Claims (17, 18, 19)
-
Specification