Digital power supply control method and device

Abstract

The invention provides a digital power supply control method and device, and the method comprises the steps: a second digital control chip collects a second current and a second voltage outputted by a power module, obtains an output value of a current loop and an output value of a voltage loop through calculation according to the second current and the second voltage, converts the output value of the voltage loop and the output value of the current loop through a pulse width modulation technology to obtain a first to-be-transmitted duty ratio signal and a second to-be-transmitted duty ratio signal, and transmits the first to-be-transmitted duty ratio signal and the second to-be-transmitted duty ratio signal to a first digital control chip through an isolation circuit; and the first digital control chip converts the first to-be-transmitted duty ratio signal and the second to-be-transmitted duty ratio signal into driving signals and then transmits the driving signals to a driving circuit of the power module, and the driving circuit and the main power circuit achieve adjustment or voltage stabilization of output voltage and output current together. Therefore, the purpose of reducing the overall transmission cost under the condition of ensuring the digital loop and the characteristics thereof is achieved.

Description

technical field [0001] The present application relates to the technical field of power supplies, in particular to a method and device for controlling digital power supplies. Background technique [0002] As electronic systems become more and more complex, the requirements for power supplies are also increasing. Especially in the fields of servers, communications, and new energy, there are generally requirements for monitoring and management of power-on, sequencing, load distribution and balancing, light-load efficiency, and fault reporting. However, the traditional analog power supply will make the system complicated by implementing these functions. And high cost; and digital power supply is undoubtedly the best solution to meet these new requirements because of its flexible control method and the power management, protection, fault reporting and other functions that can be realized through a single chip. [0003] However, in the process of transmitting data in the current ...

AI Technical Summary

Problems solved by technology

Especially in the fields of servers, communications, and new energy, there are generally requirements for monitoring and managing power-on, sequencing, load distribution and balancing, light-load efficiency, and fault reporting. However, the traditional analog power supply will make the system complicated by implementing these functions. and high cost; and the digital power supply is undoubtedly the best solution to these new requirements because of its flexible control method and the power management, protection, fault reporting and other functions that can be realized through a single chip

[0003] However, in the process of transmitting data in the current digital loop, the pulse width modulation (PulseWidth Modulation, PWM) driving signal is usually used for direct transmission, and the overall cost of direct transmission using PWM driving signal is relatively high.

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