Electricity: power supply or regulation systems – Output level responsive – Using a three or more terminal semiconductive device as the...
Reexamination Certificate
2005-03-15
2005-03-15
Berhane, Adolf (Department: 2838)
Electricity: power supply or regulation systems
Output level responsive
Using a three or more terminal semiconductive device as the...
C323S288000
Reexamination Certificate
active
06867572
ABSTRACT:
A regulator and related method for providing a regulated voltage. The regulator includes a bipolar junction transistor (BJT) as a charging circuit, a capacitive circuit formed for regulating the regulated voltage by bypass and regulation capacitors, an operational amplifier (OP-AMP), a bandgap circuit, and a pre-charging circuit. The capacitive circuit receives current to establish the regulated voltage. According to the regulated voltage, the OP-AMP biases the base of the BJT to obtain the accurate regulated voltage to control a current conducted to the capacitive circuit by the BJT. When the regulator starts to work, the OP-AMP is disabled to prevent the BJT from providing current. Instead the pre-charging circuit first provides a pre-charging current to charge the capacitive circuit, then the OP-AMP is enabled to turn on the BJT to charge the capacitive circuit and establish the steady-state regulated voltage.
REFERENCES:
patent: 6204654 (2001-03-01), Miranda et al.
patent: 6272029 (2001-08-01), Hirose
patent: 6388433 (2002-05-01), Marty
patent: 6583607 (2003-06-01), Marty et al.
patent: 6759836 (2004-07-01), Black, Jr.
Berhane Adolf
Hsu Winston
VIA Technologies Inc.
LandOfFree
Regulator and related method capable of performing pre-charging does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Regulator and related method capable of performing pre-charging, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Regulator and related method capable of performing pre-charging will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3443823