Voltage regulator capable of improving system response
First Claim
1. A voltage regulator capable of improving system response, comprising:
- a feedback circuit whose input terminal is coupled to an output voltage terminal for attenuating the output signal; and
an operational amplifier, including;
a pre-amplifier whose input terminals are coupled to the output terminal of the feedback circuit and an input voltage terminal, respectively, wherein the pre-amplifier is a device for amplifying the differential voltage between the feedback output voltage signal and the input voltage signal;
a clamping circuit whose input terminal is coupled to the output terminal of the pre-amplifier, wherein the clamping circuit is a device for clamping differential voltage signals between a pre-defined voltage range; and
a power amplifier whose input terminal is coupled to the output terminal of the clamping circuit while the output terminal is coupled to both the input terminal of the feedback circuit and the output voltage terminal, wherein the power amplifier is a device for increasing the power output of differential voltage signals.
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Accused Products
Abstract
A voltage regulator capable of improving system response. The voltage regulator includes a feedback circuit and an operational amplifier. The input terminal of the feedback circuit is coupled to an output voltage terminal for attenuating signals coming out of the output terminal. The operational amplifier comprises a pre-amplifier, a clamping circuit and a power amplifier, all serially connected together. The input terminals of the pre-amplifier are respectively coupled to the output terminal of the feedback circuit and an input voltage terminal. The pre-amplifier is a device for amplifying differential voltage between input voltage signals and feedback voltage signals. The clamping circuit is a device for clamping amplified differential voltage from the pre-amplifier between a pre-defined voltage range. The power amplifier is a device for increasing the power of the differential voltage signals. The invention is able to maintain a quick response from the operational amplifier without reducing the frequency bandwidth of the amplifier.
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Citations
4 Claims
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1. A voltage regulator capable of improving system response, comprising:
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a feedback circuit whose input terminal is coupled to an output voltage terminal for attenuating the output signal; and an operational amplifier, including; a pre-amplifier whose input terminals are coupled to the output terminal of the feedback circuit and an input voltage terminal, respectively, wherein the pre-amplifier is a device for amplifying the differential voltage between the feedback output voltage signal and the input voltage signal; a clamping circuit whose input terminal is coupled to the output terminal of the pre-amplifier, wherein the clamping circuit is a device for clamping differential voltage signals between a pre-defined voltage range; and a power amplifier whose input terminal is coupled to the output terminal of the clamping circuit while the output terminal is coupled to both the input terminal of the feedback circuit and the output voltage terminal, wherein the power amplifier is a device for increasing the power output of differential voltage signals. - View Dependent Claims (2, 3, 4)
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Specification