Multipath voltage regulation insulation type digital DC/DC power supply as well as control method

Abstract

The present invention relates to a multipath voltage stabilizing isolated digital DC / DC electric power source and a control method thereof. The DC / DC electric power source comprises the following components: a main power topological, an isolated transformer, an primary controller, a secondary controller, a driving circuit, a voltage and current detecting channel, a feedback and sampling channel, a primary accessory electric power source, a secondary accessory electric power source, a parameter memorizer and a communication interface. In the DC / DC electric power source control method, the DC / DC electric power source is leaded to start to operate with a soft starting mode through the primary controller, and the fixed duty ratio of the dead zone of the complementary belt is outputted when the soft starting has finished to control the main switch component of the converter. The secondary controller does setting according to the prearranged parameter. The electrifying time-delay of each path is set according to the starting time sequence, and a mode of soft starting is adopted for outputting the voltage of each path. The invention relates to a full-digitally controlled DC / DC electric power source, wherein the hardware compensation network is replaced by the software code, and the electric power source according to the invention has the advantages of broad range of the adapting temperature and strong interference resistance. And at the same time the controller parameter, the electrifying time sequence, the protecting threshold and the like can be modified flexibly.

Description

technical field [0001] The invention relates to a DC / DC power supply and a control method, in particular to an isolated digital DC / DC power supply with multi-channel output and precise voltage stabilization of each channel and a control method. Background technique [0002] The digital power supply converts the feedback variables of all analog control loops into digital quantities, and uses these digital quantities to calculate the control response, executes all the control algorithms of the system in the digital domain, and then transmits the digitized control signals back to the system to control the system. The difference between digital power and analog power mainly lies in the digital control and power management and communication of the pulse width modulation (Pulse Width Modulation, PWM) feedback loop. [0003] The topology of the traditional multi-output power supply includes coupled inductance, weighted feedback, linear regulator, magnetic amplifier, synchronous rec...

AI Technical Summary

Problems solved by technology

[0006] In order to solve the existing analog power supply technology, the number of discrete components is large, the parameters are discrete, and the circuit design is complex; the feedback signal is easily affected by the non-linearity of the optocoupler current transmission ratio, and there is no intelligent configuration and Management function, new power supply design cycle and other technical problems, the present invention provides a multi-channel regulated isolated digital DC / DC power supply

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