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Dual-path output DC-DC (Direct Current-Direct Current) converter system and control method thereof

A technology of dual output and control method, applied in output power conversion device, control/regulation system, DC power input conversion to DC power output and other directions, can solve problems such as cross adjustment, auxiliary circuit voltage fluctuation, etc., and achieve good dynamic performance , Improve the output voltage accuracy, improve the effect of cross-adjustment problems

Inactive Publication Date: 2017-05-31
XIJING UNIV
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Problems solved by technology

However, when the output load of the main circuit or the output load of the auxiliary circuit changes in the multi-output for

Method used

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  • Dual-path output DC-DC (Direct Current-Direct Current) converter system and control method thereof
  • Dual-path output DC-DC (Direct Current-Direct Current) converter system and control method thereof
  • Dual-path output DC-DC (Direct Current-Direct Current) converter system and control method thereof

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Example Embodiment

[0032] The present invention will be further described below in conjunction with the drawings.

[0033] Such as figure 1 As shown, a dual-output DC-DC converter system includes a main circuit dual-output forward DC-DC converter 1, a sampling circuit 2, a controller 3, a first drive circuit 4, and a second drive Circuit 5, the main circuit forward DC-DC converter 1 dual output terminals are simultaneously connected to the input terminal of the sampling circuit 2, the output terminal of the sampling circuit 2 is connected to the input terminal of the controller 3, and the output terminal of the controller 3 is connected to the DC-DC converter The first drive circuit 4 is connected to the second drive circuit 5 of the DC-DC converter at the other end to form a closed loop feedback system; the controller 3, the first drive circuit 4, and the second drive circuit 5 are in the main circuit dual Output forward DC-DC converter 1 phase connection;

[0034] The dual-output forward DC-DC co...

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Abstract

The invention discloses a dual-path output DC-DC (Direct Current-Direct Current) converter system and a control method thereof. The dual-path output DC-DC converter system is characterized in that a forward-mode DC-DC converter is adopted by a main circuit; an ARM (Acorn RISC Machine) processor is used for smartly judging a main path and an auxiliary path; a closed-loop control method is adopted by the two paths; meanwhile, the duty cycle of a power switch tube is controlled simultaneously. By adopting the dual-path output DC-DC converter system and the control method thereof, the output voltage accuracy and dynamic performance of a dual-path output forward power supply in an output load variable application environment are increased and improved, and cross regulation is improved.

Description

technical field [0001] The invention belongs to the technical field of electronic design, and in particular relates to a dual output DC-DC converter system and a control method thereof. Background technique [0002] The single output converter has the characteristics of stable output voltage, small ripple, high load regulation and fast dynamic response. However, in practical applications, many devices require multiple auxiliary power supplies. If each auxiliary power supply uses a separate converter and high-voltage isolation transformer, the power supply system will inevitably be bulky, complicating the design of the auxiliary power supply, and reducing the reliability of the equipment. [0003] The multi-output converter topology is used instead of multiple single-output converter topologies, which can solve the interference caused by the combination of multiple independent DC / DC converters, simplify circuit design, reduce the size of power supply equipment, reduce costs, ...

Claims

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Application Information

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IPC IPC(8): H02M3/335
CPCH02M3/3353H02M3/33561
Inventor 张婷黄世奇徐飞
Owner XIJING UNIV
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