Constant power voltage generator with current mirror amplifier o

Details Constant power voltage generator with current mirror amplifier o Constant power voltage generator with current mirror amplifier o

1998-08-05

1999-11-23

Sterrett, Jeffrey

Electricity: power supply or regulation systems

Self-regulating

Using a three or more terminal semiconductive device as the...

323315, G05F 316

Patent

active

059906715

ABSTRACT:
A constant power voltage generator produces an internal power voltage from an external power voltage, and includes a current mirror amplifier for producing a control signal representative of the magnitude of potential difference between a first input node and a second input node, a reference voltage generator for producing a reference voltage, a first level shifter for supplying a step-down reference voltage to the first input node and a second level shifter for supplying a step-down power voltage to the second input node, wherein each of the first and second level shifters is implemented by a series combination of field effect transistors so as to easily optimize the potential levels at the first and second input nodes by changing the channel resistance of the field effect transistors.

REFERENCES:
patent: 3617859 (1971-11-01), Dobkin
patent: 4088941 (1978-05-01), Wheatley
patent: 4103219 (1978-07-01), Wheatley
patent: 4769589 (1988-09-01), Rosenthal
patent: 5373226 (1994-12-01), Kimura
patent: 5521544 (1996-05-01), Hatanaka
patent: 5684394 (1997-11-01), Marshall
patent: 5825168 (1998-10-01), Kimber
patent: 5900773 (1999-05-01), Susak

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