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Two-way isolated digital dcdc power supply and control method

A technology of bidirectional isolation and isolation resistance, applied in control/regulation systems, electrical components, regulating electrical variables, etc., can solve the problems of unstable power supply voltage and difficult calculation of voltage feedback parameters, so as to improve reliability and reduce computational complexity. , reduce costs and the effect of

Active Publication Date: 2021-09-28
SHINRY TECH
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Problems solved by technology

[0004] Based on this, in order to solve the technical problem that the voltage on the input side cannot be directly sampled by the voltage dividing resistor in the above-mentioned traditional technology, the voltage feedback parameters on the input side are difficult to calculate, which leads to the instability of the power supply voltage. DCDC power supply

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  • Two-way isolated digital dcdc power supply and control method
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  • Two-way isolated digital dcdc power supply and control method

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Embodiment Construction

[0037] The following will clearly and completely describe the technical solutions in the embodiments of the application with reference to the drawings in the embodiments of the application. Apparently, the described embodiments are only some of the embodiments of the application, not all of them. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of this application.

[0038] In order to solve the technical problem that the voltage on the input side cannot be directly sampled by the voltage dividing resistor in the above-mentioned traditional technology, the voltage feedback parameters on the input side are difficult to calculate, resulting in unstable power supply voltage, a bidirectional isolated digital DCDC power supply is specially provided.

[0039] It should be noted that the bidirectional isolated digital DCDC power supply is not limited to the app...

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Abstract

A bidirectional isolated digital DCDC power supply and a control method, the power supply comprising an input side (102), an output side (104) isolated from the input side (102), and a feedback circuit connected to the input side (102) (106) and an isolated pulse width modulator (112), an optocoupler (108) connected to the feedback circuit (106), and the optocoupler (108) and the isolated pulse width modulator (112) a digital signal processor (110) connected; the feedback circuit (106) for acquiring the output voltage error of the input side (102); the optocoupler (108) for converting the output voltage error sent to the digital signal processor (110); the digital signal processor (110) is used to obtain a voltage feedback parameter according to the output voltage error; the isolated pulse width modulator (112) is used to obtain a voltage feedback parameter according to the output voltage error The voltage feedback parameter adjusts the output voltage of the input side (102), thereby improving the reliability of the power supply.

Description

technical field [0001] The present application relates to the technical field of power electronics, in particular to a bidirectional isolated digital DCDC power supply and a control method. Background technique [0002] DCDC is a newly developed miniaturized power switch module, which is formed by assembling small surface-mounted integrated circuits and microelectronic components using microelectronics technology. At present, a digital DCDC power supply has been widely used as a power supply device to supply power to various electronic devices requiring DC power supply. 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. 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 traditional two-...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02M3/335
CPCH02M3/3353
Inventor 邓向钖刘鹏飞唐疑军刘晓红吴壬华
Owner SHINRY TECH
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