Electricity: power supply or regulation systems – In shunt with source or load – Using choke and switch across source
Patent
1997-02-19
1998-06-09
Tso, Edward
Electricity: power supply or regulation systems
In shunt with source or load
Using choke and switch across source
323280, 323284, 323285, G05F 110
Patent
active
057640386
ABSTRACT:
A switched-mode voltage regulator includes a control unit receiving a direct voltage to be regulated and having an output at which an output voltage can be picked up. A voltage regulator amplifier receives the output voltage and a reference voltage and supplies an output signal. A multiplier unit multiplies the output signal of the voltage regulator amplifier with a signal obtained from the direct voltage to be regulated and supplies an output signal. A current regulator amplifier receives the output signal of the multiplier and a signal obtained from the direct voltage to be regulated. A driver stage converts the output signal of the current regulator amplifier into a trigger signal for the control unit. A circuit configuration for limiting the output voltage of the switched-mode voltage regulator includes an overvoltage amplifier generating an output signal as a function of the output voltage of the control unit. In one embodiment, the multiplier unit multiplies the output signal of the overvoltage amplifier with the output signal of the voltage regulator amplifier and the signal obtained from the direct voltage to be regulated. In another embodiment, the outputs of the overvoltage amplifier and the voltage regulator amplifier are interconnected for limiting an output voltage value of the voltage regulator amplifier to a maximum voltage value.
REFERENCES:
patent: 4437048 (1984-03-01), Arnold
patent: 5029269 (1991-07-01), Elliott et al.
Electronic Design, Jun. 1989 (Goodenough) "PWM Controller Chip Fixes Power Factor" pp. 81-84.
Siemens Components, 31, 1993, No. 2, pp. 46-50, (Schott) "Power-Factor-Controller TDA 4815/19".
Greenberg Laurence A.
Lerner Herbert L.
Riley Shawn
Siemens Aktiengesellschaft
Tso Edward
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