Circuit arrangement having a free-wheel diode
AssigneeHitachi, Ltd.
InventorsHaruka Shimizu, Katsumi Ishikawa, Masahiro Nagasu, Dai Tsugawa
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Abstract
An object of the present invention is to reduce the conducting loss of an existing conversion circuit while suppressing its noise. The present invention is typically a circuit arrangement includes at least one switching device and a free-wheel diode connected in parallel with the switching device. The free-wheel diode is formed by connecting a silicon PiN diode in parallel with a Schottky barrier diode that uses a semiconductor material having a wider band gap than silicon as a base material. The silicon PiN diode and Schottky barrier diode are separate chips.
Claims8
A circuit arrangement comprising:
- at least one switching device;
- and
- a free-wheel diode connected in parallel with the switching device;
- wherein the free-wheel diode is formed by connecting a silicon PiN diode in parallel with a Schottky barrier diode that uses a semiconductor material having a wider band gap than silicon as a base material;
- and
- wherein the silicon PiN diode and Schottky barrier diode are separate chips.
A circuit arrangement comprising:
- at least one switching device;
- and
- a free-wheel diode connected in parallel with the switching device;
- wherein the free-wheel diode is formed by connecting a PiN diode in series with two or more Schottky barrier diodes;
- wherein the Schottky barrier diodes use a semiconductor material having a wider band gap than silicon as a base material;
- wherein the PiN diode uses a semiconductor material having a wider band gap than silicon as a base material;
- and
- the Schottky barrier diodes and the PiN diode are separate chips.
Dependencies are inferred from the claim text.