New high-power modules help you seize the opportunity in the increasingly hot charging pile
New energy vehicles are becoming more and more popular as related technologies become more mature, and their clean and environmentally friendly features have become more and more popular among the public. Due to the limitations of the power system (battery, etc.), the battery life of the new energy vehicle and the size of the power cabin have been criticized. It can be seen that the advantages of new energy vehicles are very obvious, but the weaknesses are also prominent. So how can we make full use of this new technology and make it not ribbed? Adding supporting infrastructure (like fuel-powered vehicles, adding “gas stations†or charging piles/chargers) is undoubtedly the strongest boost to the development of electric vehicles. What is the potential of this supporting infrastructure? It can be said that there is a chance to have a place! As a result, we can see that a large number of companies are confidently entering this market.
Then the problem is coming. The charging pile/charger is different from the now-popular Internet+, and related companies need to come up with specific products. Therefore, many companies that are eager to try this market will face a serious problem. How can we introduce related products more quickly to join the market competition? We all know that the charging pile can be understood as a large power supply, which realizes the conversion of AC power to DC high voltage. Among them, in addition to the soft core, the core is the power device. Power devices are nothing more than two choices, one is to use a single tube, the other is to use a module; the use of a single tube, perhaps the cost will be slightly reduced, but heat dissipation, layout, etc. need to pay special attention, especially in high current applications, At this point, the power module is the best choice.
Let us turn our attention to the charging pile itself, let us abstract the topology of the entire product. Due to the similarity between the small power pile and the early communication power supply, many customers will directly use the communication power supply of about 8kw to make the module, and finally form the pile of the larger power section. Because the power supply is relatively large, and in order to improve the power utilization rate and reduce the interference to the power grid system, they generally use a three-phase Vienna rectifier/PFC link.
The AC input is followed by a typical three-phase Vienna PFC rectification structure. After controlled rectification, the voltage may rise to around 750V and then provide a controlled voltage and current output through the DC-DC unit. Due to the particularity of its application, it is now more common to have an LLC resonant structure. In the early days, MOS has a good shutdown characteristic, so it is especially suitable for ZVS technology-related structures. In the early IGBTs, the switching frequency was not very high (conduction loss and switching loss, etc.) due to process limitations. Most of the LLCs are made with CoolMOS. Now infineon has introduced the H5 generation power tube, which can be adapted to the needs of high frequency switching:
We all know that the IGBT has a smaller output capacitance than the MOS, and the turn-on loss will be smaller. It will be more advantageous in the case of a certain duty cycle. Although CoolMOS can also achieve a small turn-on loss, the cost will increase a lot.
Vincotech took full advantage of the H5's high switching frequency characteristics, and customized a full-bridge circuit consisting of H5 modules for the DC-DC part of the charging post, which is ideal for the DC-DC output of the charging post. At the same time, vincotech also makes full use of its strong technology and experience in the power electronics market, bringing customers a power module with lower stray inductance and easier design.
As shown below, Vincotech introduced the 10-FY074PA100SM-L583F08, a module for high-efficiency H-bridge topologies with a height of 12mm and an open-circuit design for more flexible design. In addition, the product also integrates capacitors and thermocouples for customers. The internal device is as described above, and the combination of Infineon's high-speed H5 IGBT and ultra-fast diode is selected. Considering the large current of the product, vincotech still uses the design features of its low-stray inductance, which makes the module related. The stray inductance is reduced overall by one grade, greatly reducing the design and commissioning time of the user engineer. At present, Shiqiang has represented Vincotech's full line of products.
The internal IGBT H5 is rated at 650V, and the continuous operating current (limit junction temperature, heatsink temperature up to 80 degrees Celsius) can be maintained at 79A, and its repeatable peak current capability can reach 300A. The anti-parallel diode is capable of repeatedly withstanding 650V high voltage, with a long-time flow capacity of 52A and a repeatable peak flow capacity of 120A. Considering that the output voltage may exceed 650V, we can realize high-voltage fast H-bridge LLC circuit (or other forms) very conveniently through serial connection of modules. At present, Shiqiang supports Vincotech's full line of products.
About Shiqiang
Founded in 1993, Shiqiang Advanced includes Anwara, Renesas Electronics, AARONIA AG, Silicon Labs, Rogers, Melexis, Infineon, Acam, Alliance, Littelfuse, EPSON, Vincotech, Wima, New Battery, SMI, TT Electronics, Ricoh Microelectronics, Keysight and other world-renowned semiconductor companies and test and measurement equipment companies in the Greater China region, is also an important supplier of many electronics manufacturing and R&D companies. In addition to covering the traditional industrial, communications, consumer and automotive electronics sectors, the emerging business of the Internet of Things, Internet of Vehicles, Wearables, and Smart Mobile Terminals brings more cutting-edge technologies and innovative products.
As a technology-driven distribution company, Shiqiang also has a mature technical support team and system service processes, providing customers with new product introduction, rapid sample, application consulting, solution and software design, development environment, after-sales and logistics. Professional services. Shiqiang has 17 offices and subsidiaries Xinhualong in the country, with 650 employees.
On January 11, 2016, the launch of Shiqiang Component E-commerce 020 intelligent hardware innovation service platform will provide engineers with comprehensive coverage of technical support and quality service experience.
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