Electricity: power supply or regulation systems – Output level responsive – Using a three or more terminal semiconductive device as the...
Patent
1999-05-24
2000-07-11
Riley, Shawn
Electricity: power supply or regulation systems
Output level responsive
Using a three or more terminal semiconductive device as the...
323284, G05F 140, G05F 144
Patent
active
060878134
ABSTRACT:
A gate voltage of output driving MOS transistor is adjusted through a negative feedback circuit. The negative feedback circuit suppresses variations in gate voltage of the output MOS transistor by the feedback loop. A gate length of the output driving MOS transistor is set substantially equal to a gate length of a transistor included in the negative feedback circuit. The power supply voltage dependency of the output voltage is canceled out. The output voltage is represented by the difference between threshold voltage of a biasing transistor in the negative feedback circuit and the threshold voltage of the output driving MOS transistor. Output voltage is stably generated at a fixed level without being influenced by operation environment and fluctuation in manufacturing parameters.
REFERENCES:
patent: 5371705 (1994-12-01), Nakayama et al.
patent: 5399960 (1995-03-01), Gross
patent: 5557193 (1996-09-01), Kajimoto
patent: 5644215 (1997-07-01), Casper
patent: 5831419 (1998-11-01), Casper
patent: 5942933 (1999-08-01), Yang
patent: 5959444 (1999-09-01), Casper
Mitsubishi Denki & Kabushiki Kaisha
Riley Shawn
Vu Bao Q.
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