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A Pulse Phase Shifting Circuit Based on Data Control
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A phase-shifting circuit and data control technology, applied in phase shifters, pulse technology, pulse processing, etc., can solve problems such as poor compatibility, limited popularization, difficulty in updating and maintaining engineering software, and achieve the effect of low cost
Active Publication Date: 2022-05-20
MORNSUN GUANGZHOU SCI & TECH
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Problems solved by technology
[0003] However, since the birth of digital switching power supply for many years, its main solutions are still based on typical solutions such as DSP, ARM+CPLD, and ARM+FPGA. Apart from the above main solutions, there are almost no other digital power supply solutions.
[0004] The DSP solution is relatively mature, and the cost is acceptable. Due to its unique software development environment and complex register configuration, its popularity is limited to a certain extent.
In addition, due to the singleness of the solution, the digital switching power supply of the DSP solution will inevitably become homogeneous in terms of cost, performance and core technology over time, and it is highly dependent on the DSP chip.
[0005] ARM+CPLD and ARM+FPGA solutions have become the mainstream solutions in high-power digital power supply systems in recent years, but the procurement costs of CPLD and FPGA chips are very high, even exceeding the main control chip (ARM)
CPLD and FPGA chips and DSP chips also have a unique software development environment and complex register configuration. The engineering software needs to be divided into two parts. In addition, the compatibility between the versions of the software development environment is relatively poor, which makes it difficult to update and maintain the engineering software.
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no. 1 example
[0027] figure 1 It is a functional block diagram of the first embodiment of the content of the present invention, and the content of the present invention includes a logic controller, an oscillator, a first register, a second register, a third register, a first counter, a first data channel, a second data channel, a third A data channel, a fourth data channel, a fifth data channel, a first gate circuit, a first control circuit, and a second control circuit, the first control circuit includes a first register unit, a first counter unit, and the second control circuit includes a second A register unit, a second counter unit.
[0028]The connection relationship is: (1) the first register is connected to the logic controller through the second data channel, (2) the logic controller is connected to the first register unit through the third data channel, (3) the logic controller is connected to the fourth data channel It is connected with the second register unit, (4) the logic con...
no. 2 example
[0054] figure 2 It is a functional block diagram of the second embodiment of the present invention, and a synchronous signal input circuit is added on the basis of the first embodiment.
[0055] The connection relationship is: (1) The oscillator is respectively connected to the logic controller, the first register unit, the second register unit, the first counter unit, the second register, the third register, and the input terminal of the first gate circuit through the pulse output and pulse input connection; (2) the synchronous signal input circuit is connected with the first count through the synchronous pulse.
[0056] The working principle of data transmission is the same as that of the first embodiment, so it will not be repeated here.
[0057] The working principle of phase shifting is:
[0058] (1) Through the description of the first embodiment, the first control circuit generates a complementary pulse with an adjustable dead zone and a duty cycle less than 50% and ...
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Abstract
The present invention provides a pulse phase-shifting circuit based on data control. Through two control circuits, respectively generate complementary pulse signals with adjustable dead zones and a duty cycle less than 50%, and the complementary pulse signals generated by the second control circuit, Under the control of the first counter, phase shift is generated with the complementary pulse signal generated by the first control circuit. The present invention modulates the output signal of the programmable digital chip (ARM), saves the CPLD and FPGA chip, only needs the ARM chip + the modulation circuit of the invention to realize, and can satisfy the high-power topology such as controlling the phase-shifting full-bridge topology .
Description
technical field [0001] The invention relates to AC-DC and DC-DC circuits, in particular to a pulse phase-shifting circuit of a digital switching power supply mainly controlled by a digital programmable chip. Background technique [0002] Since the birth of digital switching power supply, digital switching power supply has been widely used in various fields due to its unique advantages, such as charging and inverter power supply in peak shifting power system and solar and wind power generation fields. Its main characteristics are The control system is complex and the installed capacity is super large. Digital switching power supply has irreplaceable advantages in these fields. The inverter power supply with digital power technology can track the phase of the power grid in real time, reducing the impact on the power grid caused by switching power supply, and realizing safer power supply switching. The charging system of solar and wind power stations uses digital power technol...
Claims
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