[DigiKey TechForum] Guide to High-Efficiency Power Conversion 2: Benefits of Bidirectional and Parallel Expansion, and Highly Integrated Module Solutions
TECHWORLD ·
✦ AI Summary
Hybrid converters offer the advantages of bidirectional operation, parallel expansion, and highly integrated module solutions.
The LTM4654 performs voltage conversion and can operate as a current source and current sink, enabling bidirectional use, and it can also be used for negative voltage conversion, such as converting +30V to -7V.
The LTM4654 μModule regulator is introduced as a highly integrated power conversion solution for 48V high-efficiency low-voltage conversion. Its input voltage range is up to a 55V DC link, and its output voltage can be set to 5V, 12V, and other levels.
Guide to High-Efficiency Power Conversion 2 covers the benefits of bidirectional and parallel expansion, along with highly integrated module solutions, and highlights the advantages of using hybrid converters in the latest power systems. Hybrid converters are suited to systems where efficiency matters, systems where power density matters, and systems where flexible power control matters.
The LTM4654 featured as an example performs voltage conversion. It can operate as a current source and also as a current sink, enabling bidirectional operation.
This bidirectional operation of the LTM4654 leads to more efficient use of energy within the system. It demonstrates the value of hybrid converters in the latest power systems.
The LTM4654 can also be used for negative voltage conversion. For example, it can convert +30V to -7V, and its operating principle is similar to the inverting buck-boost mode of a buck regulator.
In addition, multiple hybrid converters can be connected in parallel. When two converters are configured in parallel, the current they can handle doubles, and the power they can handle also doubles.
The LTM4654 μModule(Module) regulator from Analog Devices (ADI) is introduced as a highly integrated power conversion solution for 48V high-efficiency low-voltage conversion.
Using highly integrated solutions such as the LTM4654 makes it possible to implement high-power hybrid voltage conversion in a compact design.
The input voltage range of this solution is up to a 55V DC link.
The output voltage can be set to lower variable voltages such as 5V and 12V, and the continuous power handling capacity is up to 300W.
[Figure 1] shows an application circuit using the highly integrated LTM4654, and the defining characteristic of this circuit is the small number of external components.
In addition, when converting from a 48V input to a 9V output, conversion efficiency is 96.7% at a 15A load current. The original article can be found by referring to DigiKey's TechForum/Article.
Source: TECHWORLD · Lee Gwang-jae
Original: https://www.epnc.co.kr/news/articleView.html?idxno=407908
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Source: TECHWORLD
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