Japan, Sept. 16 -- SHINDENGEN ELECTRIC MFG CO LTD has got intellectual property rights for 'SEMICONDUCTOR DRIVING CIRCUIT AND POWER CONVERSION DEVICE.' Other related details are as follows:
Application Number: JP,2022-155553
Category (FI): H02M1/08@A,H02M3/155@H
Stage: PROBLEM TO BE SOLVED: To decrease a voltage drop during reverse current conduction of a switching element, such as that produced in a dead time period of a power conversion device, thereby reducing a reverse conduction loss.SOLUTION: A power conversion device (e.g., a PFC circuit in a converter) includes: an AC power source 21; a rectification circuit 22; a choke coil 23; a normally-on switching element 24a and a switch 24b in the on state at all the times in a first switching circuit 24; a normally-on switching element 25a and a switch 25b in the on state at all the times in a second switching circuit 25; and driving circuits 26, 27 that drive the switching circuits 24, 25. The driving circuit 26 or 27 changes a bias amount of a negative bias for bringing the switching element 24a or 25a into the off state based on information that erroneous ignition of the switching elements 24a, 25a is easy to occur.SELECTED DRAWING: Figure 1 (Grant)
Filing Date: Sept. 28, 2022
Publication Date: April 9, 2024
The original document can be viewed at: https://www.j-platpat.inpit.go.jp/p0100
Disclaimer: Curated by HT Syndication.
