Switch controller having a regulating path and an auxiliary regu

Details Switch controller having a regulating path and an auxiliary regu Switch controller having a regulating path and an auxiliary regu

1985-07-22

1987-02-17

Salce, Patrick R.

Electricity: power supply or regulation systems

Output level responsive

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

363 89, G05F 140

Patent

active

046442545

ABSTRACT:
A switch controller has a regulating path formed of an inductance and a smoothing capacitor. A DC potential at the smoothing capacitor is connected to an amplifier which serves for amplifying a difference between this DC potential and a prescribed reference potential. A following pulse-width modulator for the control of a switching transistor is connected to the amplifier. In accordance with the invention, an auxiliary regulating path is connected parallel to the regulating path. The auxiliary regulating path is designed such that it has a maximum phase rotation of -90.degree. in its phase response.

REFERENCES:
patent: 3226630 (1965-12-01), Lampke
patent: 4293904 (1981-10-01), Brooks et al.
patent: 4454558 (1984-06-01), Huddart
patent: 4514679 (1985-04-01), Schierjott
Hewlett Packard Application Bulletin 33, "Loop Phase-Gain Measurement of a Power MOSFET Switch Mode Power Supply".
IBM Technical Disclosure Bulletin, vol. 20, No. 8, Jan. 1978, pp. 2945-2947.

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