Electricity: power supply or regulation systems – Output level responsive – Using a three or more terminal semiconductive device as the...
Patent
1994-03-31
1996-09-24
Wong, Peter S.
Electricity: power supply or regulation systems
Output level responsive
Using a three or more terminal semiconductive device as the...
323280, G05F 1565
Patent
active
055594239
ABSTRACT:
A voltage regulator for an electronic circuit card includes a FET with a source supplied via an input LC filter with a voltage to be regulated, a drain for delivering a regulated output voltage via a current-sensing resistor and an output LC circuit, and a gate which is supplied with a current drive from a linear transconductance amplifier having a differential input responsive to the regulated output voltage relative to a reference voltage. The regulator provides large bandwidth low voltage drop regulation without requiring higher voltage supply for the gate of the FET. A current limiting circuit reduces the current drive in response to excessive current through the current-sensing resistor, and a turn-on control circuit reduces the current drive to provide a controlled turn-on for hot insertion of the card into electronic equipment.
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Berhane Adolf
Haley R. John
Norhtern Telecom Limited
Wong Peter S.
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