Electricity: power supply or regulation systems – Self-regulating – Using a three or more terminal semiconductive device as the...
Patent
1999-03-08
2000-08-01
Wong, Peter S.
Electricity: power supply or regulation systems
Self-regulating
Using a three or more terminal semiconductive device as the...
323273, 323907, G05F 308, G05F 110, H03K 1700
Patent
active
060971797
ABSTRACT:
A voltage regulator circuit (100), coupled between a high power supply voltage (VCC) and a lower power supply voltage (VSS), provides a regulated voltage (XDD) that is greater than the high power supply voltage (VCC). The voltage regulator circuit (100) includes a temperature compensating detect circuit (102) which activates a trigger signal when the XDD voltage exceeds a predetermined level. In response to an active trigger signal, a shunt circuit (104) couples the regulated voltage (XDD) to the high power supply voltage (VCC). The regulated voltage (XDD) is translated to the detect circuit (102) by the regulated voltage (XDD) being applied to the gate of a transistor (N112) disposed between the high power supply voltage (VCC) and a detect node (108). This arrangement allows monitoring of the regulated voltage (XDD) level without loading the regulated voltage (XDD).
REFERENCES:
patent: 4967139 (1990-10-01), Betti et al.
patent: 5530339 (1996-06-01), Macrae et al.
patent: 5801582 (1998-09-01), Weber
Madhu Raghava
Ray Abhijit
Hoel Carlton H.
Holland Robby T.
Telecky Jr. Frederick J.
Texas Instruments Incorporated
Vu Bao Q.
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