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Development of a New MOS Rectifier for High-Efficiency Alternators
ISSN: 0148-7191, e-ISSN: 2688-3627
Published March 28, 2017 by SAE International in United States
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For the purpose of improving vehicle fuel efficiency, it is necessary to reduce energy loss in the alternator. We have lowered the resistance of the rectifying device and connecting components, and control the rectifying device with an IC to reduce rectification loss. For the package design, we have changed the structure of the part on which the rectifying device is mounted into a high heat dissipation type. The new structure has enabled optimizing the size of the rectifying device, resulting in the reduction of size of the package. In addition, the rectifying device is mounted using a new soldering material and a new process, which has improved the reliability of the connection. Moreover, since the alternator has introduced a new system, the controller IC has a function for preventing malfunction of the rectifying device and a function for detecting abnormalities, in order to ensure safety. These technologies have realized a low-energy loss high-reliability rectifier, which contribute to the reduction of alternator loss and enhancement of vehicle fuel efficiency.
CitationMatsushita, K., "Development of a New MOS Rectifier for High-Efficiency Alternators," SAE Technical Paper 2017-01-1240, 2017, https://doi.org/10.4271/2017-01-1240.
- Shingo HIGUCHI , Hiromasa HAYASHI , Yoshitsugu SAKAMOTO , Sakie OKADA Solder joints reliability of power module for automotive applications Microelectronics Symposium 2016