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Multi-phase DCDC control system and multi-phase DCDC conversion circuit

A control system and conversion circuit technology, applied in control/regulation systems, output power conversion devices, electrical components, etc., can solve problems such as poor transient response, and achieve the effects of fast dynamic response and fast current balance

Active Publication Date: 2021-04-30
3PEAK INC
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In existing multi-phase DCDC converters, pure current mode control and pure COT (constant on-time) control are usually adopted, but the transient response of pure current mode control is not good, and pure COT control transient Good state response, but requires additional current equalization circuit

Method used

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  • Multi-phase DCDC control system and multi-phase DCDC conversion circuit

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Embodiment Construction

[0041] The present invention will be described in detail below with reference to the various embodiments shown in the accompanying drawings. However, these embodiments do not limit the present invention, and the structural, method, or functional transformations made by those of ordinary skill in the art based on these embodiments are all included in the protection scope of the present invention.

[0042] The invention discloses a multi-phase DCDC control system, comprising:

[0043] The main unit generates a first PWM signal based on the COT control mode, and converts the first PWM signal into a first control signal;

[0044] a phase generating unit, configured to phase-shift the first PWM signal to generate several clock signals;

[0045] A plurality of slave units generate a plurality of second PWM signals based on a current mode control method and a plurality of clock signals, and convert the second PWM signals into second control signals.

[0046] The invention also disc...

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PUM

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Abstract

The invention discloses a multi-phase DCDC control system and a DCDC converter. The system comprises a main unit which generates a first PWM signal based on a COT control mode, and converts the first PWM signal into a first control signal, a phase generation unit used for carrying out phase shift on the first PWM signal to generate a plurality of clock signals, and a plurality of slave units used for generating a plurality of second PWM signals based on a current mode control mode and the plurality of clock signals and converting the second PWM signals into second control signals. A main-slave structure is adopted for multi-phase control, the main unit generates the first PWM signal in the COT control mode, the phase generation unit generates a multi-phase clock signal needed by the slave units, the slave units generate the second PWM signals in a current mode control mode, and rapid dynamic response and current balance in the DCDC conversion circuit can be achieved at the same time.

Description

technical field [0001] The invention belongs to the technical field of power chip control, and in particular relates to a multi-phase DCDC control system and a DCDC converter. Background technique [0002] The DCDC (Direct Current to Direct Current) converter is used to change the input voltage to a fixed output voltage, and is divided into a boost type (Boost), a buck type (Buck), and the like. [0003] In the existing multi-phase DCDC converters, the implementation of pure current mode control and pure COT (constant on-time) control are usually used, but the transient response of pure current mode control is not good, and pure COT control transient The state response is good, but additional current balancing circuitry is required. [0004] Therefore, in view of the above technical problems, it is necessary to provide a multi-phase DCDC control system and a DCDC converter. SUMMARY OF THE INVENTION [0005] The purpose of the present invention is to provide a multi-phase...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02M3/158H02M1/088
CPCH02M3/158H02M1/088
Inventor 王永进
Owner 3PEAK INC
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