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Control circuit of direct current converter and self-adaptive voltage positioning control method

A DC converter and self-adaptive voltage technology, which is applied in the direction of converting DC power input to DC power output, control/regulation systems, instruments, etc., can solve the problem of low output voltage, and achieve the effect of stable output voltage and flexible requirements

Pending Publication Date: 2021-12-31
CHENGDU MONOLITHIC POWER SYST
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Therefore, if the traditional adaptive voltage positioning technology is still used, the output voltage under full load conditions will be very low, and may even be close to the lowest threshold of the central processing unit (CPU) operating voltage

Method used

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  • Control circuit of direct current converter and self-adaptive voltage positioning control method
  • Control circuit of direct current converter and self-adaptive voltage positioning control method
  • Control circuit of direct current converter and self-adaptive voltage positioning control method

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Embodiment Construction

[0024] 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.

[0025] 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

The invention discloses a control circuit for a direct current converter and a self-adaptive voltage positioning control method. The control circuit comprises an overcurrent comparison circuit for generating an overcurrent comparison signal, a self-adaptive voltage positioning control circuit for generating a positioning signal according to a voltage identification code, a self-adaptive voltage control command set, the output voltage, the output current and an overcurrent comparison signal, and a switch control circuit for generating a switch control signal according to the positioning signal. When a current sampling signal is smaller than an overcurrent reference signal, the output voltage is controlled to change along a first voltage positioning curve along with the increase of the output current, and when the current sampling signal is larger than the overcurrent reference signal, the output voltage is controlled to change along a second voltage positioning curve along with the increase of the output current, and after the output current is greater than the current value at the intersection of the second voltage positioning curve and a third voltage positioning curve, the output voltage is controlled to change along the third voltage positioning curve along with the increase of the output current.

Description

technical field [0001] The invention relates to an electronic circuit, and more specifically, the invention relates to a control circuit of a DC converter and an adaptive voltage positioning control method. Background technique [0002] In today's low-voltage, high-current microprocessor power supply applications, power supply performance, especially transient response performance, is a critical requirement. In order to reduce the voltage deviation of the output voltage (that is, the supply voltage of the microprocessor) during the load jump process, an adaptive voltage position (AVP) technology is adopted to maintain the stability of the system. [0003] The principle of traditional adaptive voltage positioning technology is as follows: figure 1 As shown, the output voltage Vo decreases linearly from V1 with the increase of the output current (that is, the load current) Io, until the output current Io reaches the maximum load point Imax, and the output voltage Vo drops to ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02M3/156H02M3/158H02M1/088H02M1/32
CPCH02M3/156H02M3/158H02M1/088H02M1/32H02M3/157H02M1/0009H02M1/0025H02M3/1566H02M1/325
Inventor 胡望淼姜礼节张方禹
Owner CHENGDU MONOLITHIC POWER SYST
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