Method of operating a switching regulator and apparatus therefor

Details Method of operating a switching regulator and apparatus therefor Method of operating a switching regulator and apparatus therefor

1989-08-25

1991-03-19

Wong, Peter S.

Electricity: power supply or regulation systems

Output level responsive

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

323282, 323242, 323326, G05F 156

Patent

active

050014137

ABSTRACT:
A switching regulator including a direct voltage source for producing an input voltage, an electronic switch connected between the voltage source and an output for switching the input voltage to the output, a pulse width modulator connected for controlling the electronic switch, a sawtooth signal generator connected for feeding the pulse width modulator a sawtooth signal of constant maximum amplitude, and a proportional signal circuit connected for feeding the pulse width modulator a signal proportional to current through the electronic switch. In order to suppress interference components on the direct input voltage, the switching regulator additionally includes a further signal circuit connected for feeding the pulse width modulator a further signal having an amplitude which is a function of the magnitude of the input voltage of the voltage source, and controllable signal circuitry for selectively choosing the amplitudes of the signals fed to the pulse width modulator in such a way that the arithmetic mean of the current through the inductance of the switching regulator is maintained constant.

REFERENCES:
patent: 4316136 (1982-02-01), Saxarra et al.
patent: 4580090 (1986-04-01), Bailey et al.
patent: 4618812 (1986-10-01), Kawakami
patent: 4712169 (1987-12-01), Albach
patent: 4719552 (1988-01-01), Albach et al.
patent: 4816982 (1989-03-01), Severinsky
patent: 4862057 (1989-08-01), Contartese et al.
Richard Redl & Nathan O. Sokal, "Near-Optimum Dynamic Regulation of DC-DC Converters . . . ", IEEE, vol. Pe 1, No. 3, Jul. 1986.
Otto Macek, "Schaltnetzteile Motor Steuerungen", pp. 101-102, Huthig Verlag Heidelbergen, 1982.

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