Switching mode power supplies

Details Switching mode power supplies Switching mode power supplies

1994-05-24

1995-06-27

Dougherty, Thomas M.

Electricity: power supply or regulation systems

Output level responsive

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

323222, G05F 156

Patent

active

054282861

ABSTRACT:
A switching mode power supply is disclosed in which an input voltage is modulated by a switch and the modulated waveform is passed through an inductance, rectified and filtered to provide an output of a controlled value, and in which to determine the current passing through the inductance, the smaller of the root mean square (rms) current through the switch and the rms current through the rectifier is measured by including a current measuring resistor in series with that respective component, and the current through the other component is measured by including a current-sensing transformer in series with that component, the current through the inductor then being determinable as the combination of the other two currents.

REFERENCES:
patent: 4195335 (1980-03-01), Murakami et al.
patent: 4672303 (1987-06-01), Newton
patent: 4816982 (1989-03-01), Severinsky
patent: 5001413 (1991-03-01), Ohms
patent: 5001620 (1991-03-01), Smith
patent: 5028861 (1991-07-01), Pace et al.

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