Internal voltage protection circuit
US6111737A · kind A · utility
6Cited by
6References
41Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 11, 1999 |
| Grant date | Aug 29, 2000 |
| Priority date | — |
| Expiry date | Mar 11, 2019 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10D89/601
Abstract
An internal circuitry protection scheme which protects on-IC circuitry when an external regulator voltage pin is shorted to a higher voltage. The circuit prevents damage to the on-die circuitry that is on the internal voltage rail, by clamping the received voltage, thereby eliminating the chance of damaging the on die circuitry. The circuit offers protection even if the voltage difference is large, but the difference remains small between the internal rail and the external regulated voltage under normal operation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.