Electric switches for reducing on-state power loss
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United States of America Patent
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-
Aug 24, 1999
Grant Date -
N/A
app pub date -
Oct 15, 1997
filing date -
Oct 15, 1997
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A power application circuit utilizes microelectromechanical (MEM) switches to reduce power loss in energy conversion equipment. The MEM switches can be integrated on a single substrate with a diode or semiconductor switch. The MEM switches can be included in a single circuit package with another semiconductor device and may include a control circuit which turns each MEM switch on or off. The MEM switch is controlled so that it is opened and closed only when a relatively low voltage drop occurs across the switch. The MEM switch can be utilized in AC to AC converters, DC to AC converters, AC to DC converters, matrix converters, motor controllers, resonant motor controllers, or other power application devices. The MEM switch can also be included in a single package with an IGBT which is optimized for low-switching losses. It can be included in a single package with a diode to reduce conduction loss in power diode bridges.
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