Forward overvoltage protection circuit for a vertical semiconductor component
US5543645A · kind A · utility
10Cited by
4References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 23, 1993 |
| Grant date | Aug 6, 1996 |
| Priority date | — |
| Expiry date | Nov 23, 2013 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10D84/141
Abstract
A MOS-type vertical power transistor formed in a semiconductor layer having a bottom surface which constitutes a first electrode and a top surface, the transistor further includes a large number of identical cells that are connected in parallel with a second electrode and a control electrode formed on the top surface. The power transistor includes at least one additional cell, formed in the semiconductor layer, having the same shape as the identical cells but a smaller lateral size than the identical cells, and a circuit to turn on the power transistor when the additional cell reaches an avalanche mode.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.