DC-DC converter and control method thereof
The DC-DC converter addresses loss averaging and magnetic saturation issues by alternating phase control and swapping arm controls, achieving efficient and reliable power transfer.
JP2026031171AActive Publication Date: 2026-02-24NISSIN ELECTRIC CO LTD
Patent Information
- Application Number
- JP2024134530
- Authority / Receiving Office
- JP · JP
- Patent Type
- Applications
- Current Assignee / Owner
- Filing Date
- 2024-08-09
- Publication Date
- 2026-02-24
- Estimated Expiration
- 2044-08-09
AI Technical Summary
Technical Problem
Existing DC-DC converters face challenges in averaging losses across legs and reducing the likelihood of excessive current due to magnetic saturation.
Method used
A DC-DC converter design with a primary and secondary bridge circuit, utilizing a transformer and control unit that alternates the phase of on/off control for upper and lower arms in virtual legs every N switching periods, shifting the phase by half a period, and swapping the control of upper and lower arms to distribute switching losses evenly across legs.
Benefits of technology
The solution effectively averages losses across legs, reduces the risk of magnetic saturation, and minimizes excessive current, enhancing the efficiency and reliability of the DC-DC converter.
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Smart Images
Figure 2026031171000001_ABST
Abstract
To average heat generation between legs while reducing the possibility of generation of an excessive current.SOLUTION: The control section (control device 40) of the DC-DC converter (1) performs a first operation of allocating the first leg (21) to the first virtual leg, the second leg (22) to the second virtual leg, the third leg (23) to the third virtual leg, and the fourth leg (24) to the fourth virtual leg, and allocates the second leg to the first virtual leg, the first leg to the second virtual leg, the fourth leg to the third virtual leg, and the third leg to the fourth virtual leg; A second operation of switching between ON / OFF control of the upper arm and ON / OFF control of the lower arm is alternately performed every N switching cycles (N is a natural number).SELECTED DRAWING: Figure 1
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Citation Information
Patent Citations
DC-DC converter
JP2023166914A
DC-DC converter
JP7315886B1