Electric power voltage stabilizer outputting constant voltage

A technology of constant voltage output and voltage stabilizer, which is applied in the direction of instruments, adjusting electric variables, control/regulation systems, etc., and can solve the inaccurate output voltage of the power regulator circuit, the limitation of application range, and the influence of the power regulator circuit current And other issues

Inactive Publication Date: 2008-06-11
珠海立诚机电设备有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] Although the above patent application has been able to adjust the pulse modulation frequency of the pulse width modulation circuit according to the change of the load current, so as to reduce power consumption and improve the voltage regulation efficiency, the above control circuit is only applicable to the stable pulse width modulation ci

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  • Electric power voltage stabilizer outputting constant voltage
  • Electric power voltage stabilizer outputting constant voltage

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Embodiment Construction

[0026] Please refer to FIG. 1 , which is a system structure diagram of an embodiment of the present invention. As shown in FIG. 1 , the constant voltage output power supply regulator 50 of the present invention includes a voltage stabilizing circuit module 10 and a voltage buffer module 20 , and each module will be described separately below.

[0027] The voltage stabilizing circuit module 10 is used to receive an input voltage, stabilize the received input voltage within a predetermined voltage range, and then output a stable voltage corresponding to the predetermined voltage range. In practice, the voltage stabilizing circuit module 10 can adopt the following three methods: Three types of circuits: low drop-out linear regulator (low drop-outlinear regulator, LDO), pulse width modulation (Pulse Width Modulation, PWM) controller, and distributed components (such as MOSFET), where low drop-out linear regulator In addition to providing voltage regulation, it also provides a step...

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Abstract

The invention discloses a power regulator with constant voltage output, which comprises: a voltage stabilizing circuit module for receiving an input voltage, stabilizing the input voltage within a preset voltage range, and outputting a stabilizing voltage within the preset voltage range; a voltage buffer module coupled with the voltage stabilizing circuit for buffering the input stabilizing voltage and outputting the stabilizing voltage into the next grade circuit, wherein, the voltage buffer module stops the current of next grade circuit from flowing into the voltage stabilizing circuit module. By utilizing the voltage buffer module, the invention isolates the voltage stabilizing circuit module from load, avoids the load effect from influencing the output voltage of the voltage stabilizing circuit module; in addition, the voltage buffer module further stops current of the load from flowing into the voltage stabilizing circuit module, so as to further improve the output precision of the power regulator.

Description

technical field [0001] The invention relates to a power regulator (regulator) circuit, in particular to a constant voltage output power regulator. Background technique [0002] With the development of electronic technology, an electronic system includes functional circuits of various sizes (for example, rectification, filtering, voltage transformation, voltage stabilization, signal conversion or signal amplification, etc.), in order to make the electronic system Normal operation needs to be realized through power management, and the main purpose of power management is to control and maintain proper current and voltage supply in the electronic system at any time under different operating states of the electronic system. [0003] The power management circuit can be divided into power regulator (regulator), battery charging / measurement, hot swap, voltage monitoring and other types. Among them, the power regulator is mainly used when the voltage of the power supply and the load ...

Claims

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Application Information

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IPC IPC(8): G05F1/12
Inventor 范振顺
Owner 珠海立诚机电设备有限公司
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