Switch Driving Circuit And Driving Method Thereof
First Claim
1. A switch driving circuit that receives a power voltage and a switch driving control signal and controls a switching operation of a power switch, comprising:
- a gate signal generator receiving a first voltage and a second voltage, operating by a voltage difference between first and second voltages, and controlling a switching operation of the power switch according to the switch driving control signal; and
a protection unit generating a sense voltage corresponding to the second voltage, comparing a predetermined reference voltage with the sense voltage, and controlling the gate signal generator to stop the switching operation of the power switch according to the comparison result.
4 Assignments
0 Petitions
Accused Products
Abstract
The present invention relates to a switch driving circuit and a driving method thereof.
The switch driving circuit according to the present invention is supplied with a first voltage and a second voltage, is driven by a voltage difference between the first and second voltages, controls a switching operation of a power switch according to a switch driving control signal, generates a sense voltage corresponding to the second voltage, compares a predetermined reference voltage with the sense voltage, and stops the switching operation of the power switch according to the comparison result.
60 Citations
22 Claims
-
1. A switch driving circuit that receives a power voltage and a switch driving control signal and controls a switching operation of a power switch, comprising:
-
a gate signal generator receiving a first voltage and a second voltage, operating by a voltage difference between first and second voltages, and controlling a switching operation of the power switch according to the switch driving control signal; and a protection unit generating a sense voltage corresponding to the second voltage, comparing a predetermined reference voltage with the sense voltage, and controlling the gate signal generator to stop the switching operation of the power switch according to the comparison result. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
-
-
16. A driving method of a switch driving circuit that receives a first voltage, a second voltage, and a switch driving control signal, operates by a voltage difference between the first and second voltages, and controls a switching operation of a power switch according to the switch driving control signal, comprising:
-
generating a sense voltage corresponding to the second voltage; comparing a predetermined reference voltage with the sense voltage; and stopping the switching operation of the power switch according to the comparison result. - View Dependent Claims (17, 18, 19, 20, 21, 22)
-
Specification