System and method for reduction in power supply rail pumping in class d audio amplifiers using dual regulated dc-dc converters
AssigneeHarman Professional, Inc.
InventorsAbhiman Ananthakrishna HANDE, Mark Edward SIEBER
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Abstract
An amplifier system may include at least one alternating current (AC) input source, a first DC-DC converter configured to convert the AC voltage to a first rail voltage, a second DC-DC converter configured convert the AC voltage to a second rail voltage, and a Class D amplifier configured to receive the first rail voltage on a first positive rail from the first DC-DC converter and the second rail voltage on a second negative rail from the second DC-DC converter to reduce rail pumping of the first and second voltage rails.
Claims14
An amplifier system, comprising:
- at least one alternating current (AC) input source;
- a first DC-DC converter configured to convert the AC voltage to a first rail voltage;
- a second DC-DC converter configured convert the AC voltage to a second rail voltage;
- and
- a Class D amplifier configured to receive the first rail voltage on a first positive rail from the first DC-DC converter and the second rail voltage on a second negative rail from the second DC-DC converter to reduce rail pumping of the first and second voltage rails.
A Class D audio amplification system, comprising:
- at least one AC input source;
- a first DC-DC converter configured convert the AC voltage to regulate a positive voltage rail;
- a second DC-DC converter configured convert the AC voltage to regulate a negative voltage rail;
- and
- a Class D amplifier configured to receive the positive voltage rail from the first DC-DC converter and the negative voltage rail from the second DC-DC converter to reduce rail pumping of the Class D amplifier.
Dependencies are inferred from the claim text.