Current source for voltage regulator and its voltage regulator

A technology of current source and voltage regulator, which is applied in the field of current source and its voltage regulator, and can solve problems such as the reduction of voltage stabilization effect
CN105278601BActive Publication Date: 2017-03-01NOVATEK MICROELECTRONICS CORP
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Patents(China)
Current Assignee / Owner
NOVATEK MICROELECTRONICS CORP
Publication Date
2017-03-01

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Abstract

The invention discloses a current source and voltage stabilizers. The current source is used for rapidly adjusting output current and comprises a current generating module, a capacitor coupled to an output end of the current source, a current-varying detection module and a transconductance amplifier. The current generating module is coupled to one control node, which is used for generating rated current passing through the control node for the purpose of controlling voltage at the control node. The current-varying detection module is coupled between the control node and the capacitor so that voltage at the control node varies via the capacitor when the output end of the current source receives variation in instantaneous current. The transconductance amplifier is coupled between the control node and the output end so that magnitude of output current at the output end is correspondingly varied when voltage at the control node varies.
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Description

technical field

[0001] The invention relates to a current source for a voltage stabilizer and a voltage stabilizer thereof, in particular to a current source capable of quickly adjusting the output current of a voltage stabilizer and a voltage stabilizer thereof. Background technique

[0002] A voltage regulator (voltage regulator) usually uses a feedback circuit to lock the output voltage it intends to generate, and a voltage stabilizing capacitor is provided at the output end of the voltage regulator to assist the voltage stabilizing capability of the voltage regulator. Among them, the setting of the voltage stabilizing capacitor is mainly to convert the pre-stored charge into the driving current and supply it to the load when the demand current of the load driven by the voltage regulator changes rapidly, so as to maintain the output voltage of the output terminal of the voltage regulator. of stability. In other words, if the voltage regulator is to withstand a large chan...

Claims

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