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ADAPTIVE BULK-BIAS TECHNIQUE TO IMPROVE SUPPLY NOISE REJECTION, LOAD REGULATION AND TRANSIENT PERFORMANCE OF VOLTAGE REGULATORS
ADAPTIVE BULK-BIAS TECHNIQUE TO IMPROVE SUPPLY NOISE REJECTION, LOAD REGULATION AND TRANSIENT PERFORMANCE OF VOLTAGE REGULATORS
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机译:自适应bulk-bias技术,可改善电压调节器的电源噪声抑制,负载调节和瞬态性能
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摘要
A low-dropout (LDO) voltage regulator includes an adaptive bias source for generating a bulk-bias signal to a pass device in the LDO voltage regulator, wherein the adaptive bias source generates the bulk-bias signal based on a signal obtained at an output of the LDO voltage regulator. The signal includes a current signal, which is proportional to a current at the output of the LDO voltage regulator, and/or a feedback signal from a feedback path connected between the adaptive bias source and the output of the LDO voltage regulator for sensing negative and/or positive spikes.
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