Forward-body-bias (FBB) technology can compensate performance fluctuation in LSIs for low-voltageoperation. However, because the FBB characteristics depend on the temperature, the FBB control effect is decreased at high temperatures. A temperature insensitive state (TIS) for supply voltage improves the LSI performance as a solution of the dependence of the FBB characteristics on temperature. When an LSI is operated in a TIS, the performance fluctuation is fixed in a low temperature condition. We propose a TIS locking circuit that achieves TIS operation and reduces performance fluctuation. The circuit achieves this by detecting threshold voltage and generating voltage proportional to temperature. Compensating TIS decreased performance fluctuation and power consumption to one-third that of an LSI before TIS control was applied.
|Number of pages||4|
|Journal||Proceedings - IEEE International Symposium on Circuits and Systems|
|Publication status||Published - 1 Dec 2005|
|Event||IEEE International Symposium on Circuits and Systems 2005, ISCAS 2005 - Kobe, Japan|
Duration: 23 May 2005 → 26 May 2005