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Adaptive voltage positioning DC voltage stabilizer, and control circuit and control method thereof

A DC voltage stabilizer, self-adaptive voltage technology, applied in control/regulation systems, conversion of DC power input to DC power output, instruments, etc. Transient response capability, etc.

Active Publication Date: 2019-07-12
CHENGDU MONOLITHIC POWER SYST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] However, with the rapid development of electronic devices, the power of DC voltage regulators is getting higher and higher. Within the voltage tolerance range, the traditional AVP control can no longer guarantee the safe operation of the system and the fast transient response capability at the same time.

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  • Adaptive voltage positioning DC voltage stabilizer, and control circuit and control method thereof
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  • Adaptive voltage positioning DC voltage stabilizer, and control circuit and control method thereof

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Embodiment Construction

[0023] Specific embodiments of the present invention will be described in detail below, and it should be noted that the embodiments described here are only for illustration, not for limiting the present invention. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. It will be apparent, however, to one of ordinary skill in the art that these specific details need not be employed to practice the present invention. In other instances, well-known circuits, materials or methods have not been described in detail in order to avoid obscuring the present invention.

[0024] Throughout this specification, reference to "one embodiment," "an embodiment," "an example," or "example" means that a particular feature, structure, or characteristic described in connection with the embodiment or example is included in the present invention. In at least one embodiment. Thus, appearances of the phrases "in on...

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Abstract

An adaptive voltage positioning DC voltage stabilizer and a control method thereof are disclosed. The DC voltage stabilizer includes: a switching circuit that generates an output voltage and an outputcurrent; a control circuit that outputs a switching control signal to the switching circuit to adjust an output voltage to achieve the fact that, when an output current is less than a first thresholdcurrent, an output voltage decreases at a first slope as the output current increases, and when the output current is greater than the first threshold current and less than a second threshold current, the output voltage decreases at a second slope as the output current increases, and when the output current is greater than the second threshold current and less than a third threshold current, theoutput voltage decreases at a third slope as the output current increases.

Description

technical field [0001] The invention relates to electronic circuits, in particular to an adaptive voltage positioning DC voltage stabilizer and a control method thereof. Background technique [0002] Adaptive voltage position control (AVP control, adaptive voltage position control) is widely used in high-current DC voltage regulators used in laptops, desktops, servers and telecom equipment to improve the system's transient response and reduce the load power consumption. Figure 1A The basic principle of AVP control is shown, where Vout represents the output voltage of the DC regulator, Iout represents the output current of the DC regulator, and Vref represents the reference voltage. Such as Figure 1A As shown, when the output current Iout increases, the output voltage Vout decreases within the voltage tolerance range Vmax-Vmin, where Vmax represents the maximum allowable output voltage value, and Vmin represents the allowable minimum output voltage value. [0003] Figure...

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Application Information

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IPC IPC(8): H02M3/156
CPCH02M3/156G05F1/462G05F1/565H02M1/0025H02M3/1566H02M3/1584
Inventor 刘超黄道成姜礼节胡望淼周景海
Owner CHENGDU MONOLITHIC POWER SYST