Preface
The new design tools help accelerate product design in the two-wheeled electric vehicle market and help system engineers take full advantage of SuperGaN FETs
December 21, 2023 – Transphorm, Inc. (NASDAQ: TGAN), a leading global supplier of gallium nitride (GaN) power semiconductors, today announced the availability of two new reference designs for EV charging applications. The 300W and 600W constant-current/constant-voltage (CC/CV) battery chargers feature Transphorm's 70 mOhm and 150 mOhm SuperGaN® devices to achieve efficient AC-DC power conversion and high power density at a very competitive cost. These two reference designs are designed to help bring two- and three-wheeler EV chargers to rapid mass production.
It is reported that the annual sales of two-wheeled and three-wheeled electric vehicles in India and China exceed 14 million and 45 million units, respectively. In addition, the two reference designs can be used in a variety of other applications, including fast charging, LED dimmable drivers, gaming consoles, and high-performance notebook computers.
Tushar Dhayagude, Vice President of Global Sales and FAE at Transphorm, said, "GaN applications are rapidly gaining popularity in the EV market. This is mainly due to the fact that GaN technology enables high power density in a cost-effective, high-yield manufacturing process compared to alternative options such as silicon carbide or silicon. In particular, Transphorm's SuperGaN devices have received a lot of attention and acceptance from two- and three-wheeler manufacturers because of their system- and device-level cost advantages over silicon solutions. "We are excited to launch a reference design based on our customers' ongoing design requirements to help manufacturers of built-in or external chargers accelerate the introduction of GaN-based systems that improve the performance and usability of next-generation vehicles." ”
What is CC/CV?
The constant current/constant voltage (CC/CV) lithium-ion battery charging method adopts constant current charging in the initial stage of charging, and switches to constant voltage charging when the battery reaches the set charging amount in the later stage of charging to prevent the battery from overcharging.
Open architecture CC/CV AC-DC battery charger
The newly released 300 W and 600 W reference designs pair SuperGaN FETs with a controller using the popular Power Factor Correction (PFC) and resonant LLC topologies, where the LLC is specifically targeted at designs with a wide battery charge range, from empty to full. Transphorm's SuperGaN platform enables power system developers to maximize the performance potential of PFC+LLC to achieve the highest efficiencies achievable in these topologies at the most competitive cost.
Both reference designs use pure analog controllers instead of digital controllers that require firmware. This configuration has several advantages, such as easier design and simplified product development, for the following reasons:
· Reduced development resource requirements
· Reduced development time
· There is no need for firmware programming/maintenance, which can be complicated
Note: The 300W reference design includes an additional PWM input port for lower output currents than the rated output value, further increasing flexibility for a wide range of batteries.
The main technical specifications are as follows:
The two reference designs are based on Transphorm's SuperGaN FET devices, with unique benefits including:
· Industry-leading robustness: +/- 20 V gate threshold and 4 V immunity.
· Better designability: Fewer circuits are required around the device.
· Easier to drive: SuperGaN FETs can use commercially available drivers commonly used in silicon.
How to get a reference design
Transphorm currently offers a complete range of 300 W and 600 W CC/CV battery charger reference designs. Please visit the links below to download technical documentation, design files, firmware, and bills of materials:
· TDAIO-TPH-ON-CCCV-300W-RD:
https://transphormusa.cn/zh/reference-design/tdaio-tph-on-cccv-300w-rd/
· TDAIO-TPH-MPS-CCCV-600W-RD:
https://transphormusa.cn/zh/reference-design/tdadp-tph-mps-usbc-140w-rd-2/
To ensure the accuracy of the design of the battery charger described above, the power system developer is requested to refer to the following design guidelines:
· Constant-current/constant-voltage (CC/CV) applications for power adapters with LLC outputs:
https://transphormusa.cn/zh/document/design-guide-design-guide-11-constant-current-constant-voltage-application-for-llc/
To learn more about SuperGaN devices in the design tool, please visit the following links:
· TP65H070G4PS
650 V, 72 mΩ GaN FET in TO-220 package
https://transphormusa.cn/zh/product/product-profile-tp65h070g4ps-2/
· TP65H150G4PS
650 V, 150 mΩ GaN FET in TO-220 package
(文章来源：Transphorm)
About Transphorm:
Transphorm, Inc. is a global leader in the GaN revolution, designing, manufacturing, and selling high-performance, high-reliability GaN semiconductor power devices for high-voltage power conversion applications. Transphorm has one of the largest power GaN IP portfolios, with more than 1,000 patents held or licensed, and is the industry's first to produce JEDEC and AEC-Q101 qualified high-voltage GaN semiconductor devices. Thanks to a vertically integrated business model, the company is able to innovate at every stage of product and technology development: design, manufacturing, device and application support. Transphorm's innovations enable power electronics to push beyond the limitations of silicon to achieve efficiencies in excess of 99 percent, increase power density by 50 percent, and reduce system cost by 20 percent. Transphorm is headquartered in Golita, California, USA, with manufacturing facilities in Golita and Aizu, Japan.
官网：https://transphormusa.cn 官方微信：TransphormGaN氮化镓
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Media Contact:
Wai-Chun Chen
Email: [email protected]