Electricity: power supply or regulation systems – Output level responsive – Using a three or more terminal semiconductive device as the...
Reexamination Certificate
2006-09-05
2006-09-05
Easthom, Karl (Department: 2838)
Electricity: power supply or regulation systems
Output level responsive
Using a three or more terminal semiconductive device as the...
C327S103000
Reexamination Certificate
active
07102335
ABSTRACT:
A rail—rail current sense amplifier including a low voltage current sense amplifier circuit, a high voltage current sense amplifier circuit, a first resistive device, and a selection circuit. The current sense amplifier senses current through a current sense device coupled to a battery node. The low voltage current sense amplifier circuit develops a first current that is proportional to current through the current sense device for low voltages up to an upper voltage threshold. The high voltage current sense amplifier circuit develops a second current that is proportional to current through the current sense device for high voltages down to a lower voltage threshold. The selection circuit selectively applies the first current to the first resistive device for low voltages up to the upper voltage threshold, and selectively applies the second current to the first resistive device for high voltages down to the lower voltage threshold.
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Easthom Karl
Intersil America's Inc.
Muralidar Richard V.
Stanford Gary R.
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