Control circuit to detect a noise signal during a state change of a switch

摘要

Several circuits and methods for driver control of a switching circuit are disclosed. In an embodiment, a circuit for driver control of a switching circuit includes a driver circuit and a control circuit. The driver circuit is capable of being coupled to the switching circuit. The switching circuit includes a first switch and a second switch. The driver circuit is configured to control a conductive state of the switching circuit by facilitating an alternate state change of the first switch and the second switch. The control circuit is coupled to the driver circuit and is configured to detect a noise signal during a state change of the first switch. The control circuit is further configured to control the driver circuit to thereby slow down the state change of the first switch.

主权项

1. A circuit for driver control of a switching circuit, the circuit comprising:
a driver circuit capable of being coupled to the switching circuit, the switching circuit comprising a first switch and a second switch, the driver circuit configured to control a conductive state of the switching circuit by facilitating an alternate state change of the first switch and the second switch; and a control circuit coupled to the driver circuit, the control circuit configured to detect a noise signal during a state change of the first switch, and the control circuit further configured to control the driver circuit to slow down the state change of the first switch; wherein the circuit and the switching circuit are configured to be coupled to an external voltage source, and wherein coupling the circuit and the switching circuit to the external voltage source facilitates in coupling the driver circuit, the control circuit and the switching circuit to a positive rail and a negative rail of the external voltage source; wherein the state change of the first switch comprises switching the first switch between a conducting state and a non-conducting state, and wherein the state change of the second switch comprises switching the second switch between a conducting state and a non-conducting state; wherein the control circuit is configured to reduce current input to the first switch on the detection of the noise signal, wherein a reduction of the current input to the first switch facilitates in slowing down the state change of the first switch from the conducting state to the non-conducting state.