Method for operating a switching element connected in parallel with a rectifier element and electronic circuit
AssigneeInfineon Technologies Austria AG
InventorsYuqiang Qiu, Bin Tian
Life of this patent
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Abstract
Disclosed is a method for operating a switching element connected in parallel with a rectifier element and an electronic circuit. The method includes charging a capacitor coupled to load path nodes of an electronic switch, wherein the electronic switch includes a switching element and a rectifier element connected in parallel with a load path of the switching element and between the load path nodes; allowing the capacitor to be discharged via the load path nodes of the electronic switch; and comparing a capacitor voltage across the capacitor with a first voltage level.
Claims18
A method, comprising:
- charging a capacitor coupled to load path nodes of an electronic switch, wherein the electronic switch comprises a switching element and a rectifier element connected in parallel with a load path of the switching element and between the load path nodes;
- allowing the capacitor to be discharged via the load path nodes of the electronic switch;
- comparing a capacitor voltage across the capacitor with a first voltage level;
- and
- switching on and off the electronic switch in accordance with a predefined control signal.
A method, comprising:
- charging a capacitor coupled to load path nodes of an electronic switch, wherein the electronic switch comprises a switching element and a rectifier element connected in parallel with a load path of the switching element and between the load path nodes;
- allowing the capacitor to be discharged via the load path nodes of the electronic switch;
- comparing a capacitor voltage across the capacitor with a first voltage level;
- detecting a time instance when the capacitor voltage reaches the first voltage level;
- and
- switching on the electronic switch after a predefined delay time after the detected time instance.
An electronic circuit, comprising:
- an electronic switch comprising load path nodes, a switching element configured to be operated in an on-state or an off-state, and a rectifier element connected in parallel with a load path of the switching element and between the load path nodes;
- a capacitor coupled to the load path nodes of the electronic switch;
- a charging circuit coupled to the capacitor;
- and
- a control circuit configured to control the charging circuit such that the charging circuit charges the capacitor when the switching element is in the off-state, and compare a capacitor voltage across the capacitor with a first voltage level.
Dependencies are inferred from the claim text.