Self adaptive voltage adjuster based on PSM (pulse slope modulation) mode

Abstract

The invention relates to the technical field of electronic circuits, in particular to a self adaptive voltage adjuster based on a PSM (pulse slope modulation) mode. The self adaptive voltage adjuster based on the PSM mode is used for self adaptive online adjustments of power voltage of a digital load. The self adaptive voltage adjuster based on the PSM mode uses a delay line to obtain a fitting critical path of the digital load, uses a work clock signal of the digital load as a delay test signal, uses a delay detection module to detect whether the transmission speed of the delay test signal in the delay line meets the requirement or not so as to obtain a self adaptive voltage adjustment signal, keeps conduction capacity constant by changing reference voltage of a power converter and the duty ratio of a PSM signal, and adjusts output voltage in self adaptive mode so as to achieve the purpose that work voltage of the load is minimum under given frequency. The self adaptive voltage adjuster based on the PSM mode has the effects that the PSM mode is adopted in the power converter, output voltage ripples are improved, the work voltage of the load is minimum, power dissipation of the load is effectively reduced, the area of a chip is saved, and integration is facilitated. According to the self adaptive voltage adjuster based on the PSM mode, the PSM mode is particularly suitable for various self adaptive voltage adjusters.

Description

technical field [0001] The invention belongs to the technical field of electronic circuits, and in particular relates to an adaptive voltage regulator based on a PSM modulation mode. Background technique [0002] With the development of technology, the integration of digital integrated circuits (such as system-on-chip SoC, central processing unit CPU and digital signal processor DSP) is getting higher and higher. Low power consumption, and can work at different frequencies and voltages according to system requirements. [0003] Adaptive voltage regulation technology adaptively searches for the minimum voltage when the digital integrated circuit works normally at this frequency according to the different operating frequency of the digital integrated circuit. Many existing electronic components, such as CPU and DSP, can work at different clock frequencies. When the digital integrated circuit works at high frequency, the main part of the integrated circuit power consumption i...

AI Technical Summary

Problems solved by technology

[0005] In the existing technology, in the DC-DC converter using adaptive voltage regulation technology, there are problems such as the duty cycle of the power tube in the DC-DC converter is fixed, and the output voltage ripple is large.

Images