Four quadrant current mode switching amplifier

Details Four quadrant current mode switching amplifier Four quadrant current mode switching amplifier

1992-04-17

1993-07-06

Mottola, Steven

Amplifiers

Modulator-demodulator-type amplifier

330251, H03F 338

Patent

active

052257894

ABSTRACT:
A four quadrant current mode switching amplifier is provided. The switching amplifier includes a pulse width modulator (PWM) programmed by an error voltage derived from an analog input voltage and the amplified output voltage. The PWM is also provided with negative current mode feedback in all four quadrants of operation. A logic device controls the switching topology to source, or sink power for the load and to provide negative or positive output in dependence upon sign and slope bits, derived from the input and output voltages, and the PWM output.

REFERENCES:
patent: 4554512 (1985-11-01), Aiello

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