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Voltage generating circuit

A voltage generating circuit and output voltage technology, which is applied to electrical components, adjusting electrical variables, instruments, etc., can solve problems affecting the normal operation of the load unit 104, and achieve the effect of reducing amplitude jitter

Active Publication Date: 2015-07-08
SHANGHAI HUAHONG GRACE SEMICON MFG CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since the voltage regulator is a feedback-type working process, it often takes a certain feedback delay for the output voltage Vout to return to the predetermined voltage value from the initial drop. Therefore, after the load unit 104 starts to work, the voltage curve of the output voltage Vout appears toward The lower amplitude jitter affects the normal operation of the load unit 104

Method used

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Embodiment Construction

[0036] In order to make the above objects, features and advantages of the present invention more obvious and comprehensible, specific implementations of the present invention will be described in detail below in conjunction with the accompanying drawings and embodiments.

[0037] In the voltage generation circuit of the prior art, the output voltage of the voltage regulator is used as the control voltage of the load unit. When the load unit starts to work, the output load of the entire voltage regulator changes, and due to the feedback delay of the voltage regulator, The output voltage of the voltage regulator produces amplitude jitter, which affects the normal operation of the load unit.

[0038] In the technical solution of the present invention, a voltage compensation unit is added to the voltage generation circuit, and when the load unit starts to work, a compensation voltage with a duration of a preset time is generated to compensate for the voltage regulator within a cert...

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Abstract

The invention discloses a voltage generating circuit, which is used for providing voltages to a loading unit. The loading unit comprises a voltage input end. The voltage generating circuit comprises a voltage adjuster and a voltage compensation unit. The voltage adjuster adjusts a reference voltage and generates an output voltage; and the voltage compensation unit generates a compensation voltage the of which lasting time is a preset time when the loading unit beings working; moreover, the output voltage and the compensation voltage are inputted to the voltage input end. The voltage generating circuit reduces the amplitude jogging of the output voltage, and guarantees the normal work of the loading unit.

Description

technical field [0001] The invention relates to a voltage generating circuit. Background technique [0002] Multiple precise voltages are often required inside the chip, which are used as control signals or reference voltage signals for different modules, such as programming voltages and erasing voltages in flash memory. The voltage generation circuit in the prior art generally uses a reference voltage source to generate a reference voltage, and then uses a voltage regulator (regulator) to adjust the reference voltage to generate an output voltage with a corresponding voltage value according to the requirements of different modules. [0003] figure 1 A schematic diagram of a voltage generation circuit in the prior art is shown, a voltage regulator is used to adjust a reference voltage Vref generated by a reference voltage source to generate an output voltage Vout, and the voltage regulator includes: an operational amplifier 101, a driving unit 102 and Feedback unit 103. T...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02M3/156
Inventor 杨光军
Owner SHANGHAI HUAHONG GRACE SEMICON MFG CORP
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