Fast converter for crossing voltage domains
AssigneeBroadcom Corporation
InventorsJan Roelof Westra, Franciscus Maria Leonardus van der Goes, Erol Arslan
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Abstract
A voltage domain crossing circuit and method are disclosed. In one embodiment, the voltage domain crossing circuit comprises an AC coupling component, a DC biasing component and a high voltage output amplifier. The AC coupling component receives an input low voltage signal and AC couples and splits the signal into two voltages. The two voltages are then DC biased to a predetermined bias voltage using the DC biasing component. The high voltage output amplifier then amplifies the biased voltages in the high voltage domain yielding a signal in the high voltage domain. Other embodiments of the voltage domain crossing circuit and method are also disclosed.
Claims24
A voltage domain crossing circuit comprising:
- an AC coupling component for receiving and splitting a low voltage signal into first and second voltages;
- a DC biasing component, coupled to the AC coupling component, for DC biasing the first and second voltages, and
- a high voltage output amplifier, coupled to the DC biasing component, for amplifying the DC biased first and second voltages in the high voltage domain and outputting a signal in the high voltage domain.
A voltage domain crossing circuit comprising:
- an AC coupling component, having a first capacitor and a second capacitor, for receiving and splitting a low voltage signal into first and second voltages;
- a DC biasing component, having a first resistor and a second resistor coupled to the first capacitor and the second capacitor, respectively, of the AC coupling component, for DC biasing the first and second voltages received from the AC coupling component, and
- a high voltage output amplifier, coupled to the DC biasing component, for amplifying the DC biased first and second voltages in the high voltage domain and outputting a signal in the high voltage domain.
A voltage domain crossing circuit comprising:
- an AC coupling component for receiving and splitting a low voltage signal into first and second voltages;
- a DC biasing component, coupled to the AC coupling component, for DC biasing the first and second voltages using a predetermined bias voltage,
- a DC bias generation component, coupled to the DC biasing component, for generating the predetermined bias voltage;
- and
- a high voltage output amplifier, coupled to the DC biasing component, for amplifying the DC biased first and second voltages in the high voltage domain and outputting a signal in the high voltage domain.
A method for transforming voltage domains signals comprising the steps of:
- AC coupling an input low voltage signal;
- splitting the low voltage signal into a first voltage and a second voltage;
- DC biasing the first and second voltages;
- and
- amplifying the first and second voltages in the high voltage domain.
Dependencies are inferred from the claim text.