APPARATUSES, METHODS, AND SYSTEMS FOR CIRCUITRY USING SYNCHRONOUS RECTIFIERS
First Claim
1. An alternating current (AC) to direct current (DC) converter, comprising:
- a synchronous rectifier to convert an AC input signal to a DC output signal;
a feedback circuit coupled to an output terminal of the synchronous rectifier to sample the DC output signal and to generate a digital signal to represent a voltage of the DC output signal;
a controller coupled to receive the digital signal from the feedback circuit and to compare the digital signal to a threshold, and based on the comparison, to produce a binary signal; and
a digital-to-analog converter (DAC) coupled to receive the binary signal from the controller and, based on the binary signal, to generate a DC voltage to be applied to a gate terminal of a transistor of the synchronous rectifier to adjust a DC bias voltage level of the transistor to control the voltage of the DC output signal.
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Abstract
Embodiments include apparatuses, methods, and systems for an alternating current (AC) to direct current (DC) converter including a synchronous rectifier to convert an AC input signal to a DC output signal. The AC to DC converter may further include a feedback circuit coupled to an output terminal of the synchronous rectifier to sample the DC output signal and to generate a digital signal to represent a voltage of the DC output signal and a controller coupled to receive the digital signal from the feedback circuit. The controller may compare the digital signal to a threshold, and based on the comparison, control an adjustment of the voltage of the DC output signal. Additional embodiments may also be described.
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Citations
25 Claims
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1. An alternating current (AC) to direct current (DC) converter, comprising:
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a synchronous rectifier to convert an AC input signal to a DC output signal; a feedback circuit coupled to an output terminal of the synchronous rectifier to sample the DC output signal and to generate a digital signal to represent a voltage of the DC output signal; a controller coupled to receive the digital signal from the feedback circuit and to compare the digital signal to a threshold, and based on the comparison, to produce a binary signal; and a digital-to-analog converter (DAC) coupled to receive the binary signal from the controller and, based on the binary signal, to generate a DC voltage to be applied to a gate terminal of a transistor of the synchronous rectifier to adjust a DC bias voltage level of the transistor to control the voltage of the DC output signal. - View Dependent Claims (2, 3, 5, 6, 7, 8, 9)
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4. (canceled)
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10. A transistor-based rectifier stage, comprising:
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a rectifier circuit to convert an alternating current (AC) input signal to a direct current (DC) output signal; and a digital controller coupled to receive a digital value representing a sample voltage of the DC output signal from the rectifier circuit and to compare a voltage of the DC output signal with a threshold to determine an adjustment of gate operating voltages by determining a DC voltage to apply to a gate terminal of a transistor of the rectifier circuit to adjust a DC bias voltage level to control the voltage of the DC output signal. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17)
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18. A system, comprising:
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one or more processors; a memory coupled to the one or more processors; and a rectifier stage including; a rectifier circuit; a microcontroller coupled to the rectifier circuit, wherein the microcontroller includes; an analog-to-digital converter (ADC) coupled to an output terminal of the rectifier circuit to sample a DC output signal generated by the rectifier circuit and to generate a signal to represent a value of the DC output signal; a controller coupled to receive the signal from the ADC and to compare the signal to a threshold, and based on the comparison, to control an adjustment of a voltage of the DC output signal; and a digital-to-analog converter (DAC) coupled to the controller to receive an instruction from the controller to generate a DC voltage to be applied to a gate terminal of a transistor in the rectifier circuit to adjust a DC bias voltage level of the transistor and control the voltage of the DC output signal; wherein the rectifier stage is coupled to supply the adjusted DC output signal to the one or more processors or the memory. - View Dependent Claims (19, 20, 21)
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22. An apparatus, comprising:
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means for converting an alternating current (AC) input signal to a direct current (DC) output signal; means for sensing the DC output signal and for generating a digital signal to represent a voltage of the DC output signal; and means for comparing the digital signal to a threshold. - View Dependent Claims (23, 24, 25)
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Specification