Electricity: power supply or regulation systems – External or operator controlled – Using an impedance as the final control device
Patent
1997-03-03
1998-11-17
Riley, Shawn
Electricity: power supply or regulation systems
External or operator controlled
Using an impedance as the final control device
307 51, G05B 2402
Patent
active
058381511
ABSTRACT:
A power supply (10) including a virtual resistor. The power supply (10) includes (i) a power stage (11) having an input (12) for accepting unregulated power, an output (14) for providing regulated power, a control input (13) and a current sense output (16); (ii) a control circuit (15) including an error amplifier (19) having an inverting input coupled to the output (14) and an output coupled to the control input (13); and (iii) a virtual resistance generator (25) having an input coupled to the output of the error amplifier (19) and an output coupled to a non inverting input of the error amplifier (19). The virtual resistance generator (25) is for supplying a reference voltage (27) to the control circuit (15) such that a voltage present at the output for providing regulated power (14) as a function of current leaving the output for providing regulated power (14) provides an output virtual resistance.
REFERENCES:
patent: 4536699 (1985-08-01), Baker
patent: 4717383 (1988-01-01), Small
patent: 5319303 (1994-06-01), Yomada
An Article entitled "Paralleling Power Converters" by Alfonso J. Cioffi, AT&T Bell Laboratories, Dallas, TX from Jan. 1991 Electrical Manufacturing, pp. 27-31.
An Article entitled "Load Sharing With Paralleled Power Supplies" by Bob Mammano and Mark Jordan, Sep. 1991, pp. 2-1--2-4, Unitrode Corp.
Myers Ronald Gene
Rogers Paul Herbert
Fliegel Frederick M.
Motorola Inc.
Riley Shawn
Wuamett Jennifer B.
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