Electricity: electrical systems and devices – Safety and protection of systems and devices – Transient responsive
Patent
1992-08-12
1995-02-21
Pellinen, A. D.
Electricity: electrical systems and devices
Safety and protection of systems and devices
Transient responsive
361 91, 257529, H01L 2702
Patent
active
053921879
ABSTRACT:
An integrated circuit power device includes many cell blocks which are electrically connected in parallel, with each of the cell blocks including at least one cell such as a MOSFET, electrically connected in parallel. A transient responsive current limiting means, such as a resistor/capacitor circuit, is electrically connected to each cell block, so that the leakage current into defective cell blocks is maintained below a predetermined level without limiting the operating speed of the device. An operable integrated circuit power device is thereby obtained, notwithstanding a defective cell block. The circuit resistors are preferably formed using the same mask and material as the gate. The circuit capacitors and common gate electrode are preferably formed using the same mask and material as the source electrode. The use of common materials eliminates the need for extra fabrication steps.
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A Large Area MOS-GTO with Wafer-Repair Technique, M. Stoisiek et al., IEDM, 1987, pp. 666-669.
Modern Power Devices, B. Jayant Baliga, John Wiley & Sons, 1987, pp. 263-343.
Medley Sally
North Carolina State University at Raleigh
Pellinen A. D.
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