Semiconductor module
AssigneeFuji Electric Co., Ltd.
InventorsKenichi OKAYAMA, Nobuhiro HIGASHI
Life of this patent
Estimating the term…
Abstract
A semiconductor module includes a high-side switching device and a low-side switching device that respectively form an upper arm and a lower arm, freewheeling diodes that are respectively connected to the switching devices in anti-parallel, and a high-side driver circuit and a low-side driver circuit that respectively switch the high-side switching device and the low-side switching device ON and OFF. In the upper arm, an anode electrode of the freewheeling diode and a reference voltage electrode of the high-side driver circuit are directly connected via a first wiring, and the anode electrode of the freewheeling diode is connected to a reference voltage electrode of the high-side switching device via a second wiring having an inductance.
Claims12
A semiconductor module, comprising:
- a high-side switching device and a low-side switching device that respectively form an upper arm and a lower arm;
- a high-side freewheeling diode and a low-side freewheeling diode that are respectively connected to the high-side and low-side switching devices in anti-parallel;
- and
- a high-side driver circuit and a low-side driver circuit that respectively switch the high-side switching device and the low-side switching device ON and OFF,
- wherein an anode electrode of the high-side freewheeling diode and a reference voltage electrode of the high-side driver circuit are directly connected via a first wiring, and
- wherein the anode electrode of the high-side freewheeling diode is electrically connected to a reference voltage electrode of the high-side switching device via a second wiring having an inductance.
A semiconductor module, comprising:
- a high-side switching device and a low-side switching device that respectively form an upper arm and a lower arm;
- a high-side freewheeling diode and a low-side freewheeling diode that are respectively connected to the high-side and low-side switching devices in anti-parallel;
- and
- a high-side driver circuit and a low-side driver circuit that respectively switch the high-side switching device and the low-side switching device ON and OFF,
- wherein an anode electrode of the high-side freewheeling diode and a reference voltage electrode of the high-side driver circuit are directly connected via a first wiring having an inductance,
- wherein the anode electrode of the high-side freewheeling diode is directly connected to a reference voltage electrode of the high-side switching device via a second wiring having an inductance, and
- wherein the first wiring and the second wiring are arranged such that magnetic coupling occurs between the first wiring and the second wiring when the high-side switching device is switched ON and OFF.
Dependencies are inferred from the claim text.