汽车电源领域的一流半导体器件,包括EliteSiC系列碳化硅MOSFET、EliteSiC系列碳化硅二极管、硅超级结(SJ)MOSFET、混合型IGBT和汽车电源模块(APM)等,让车载充电机(OBC)实现功率密度、效率、可靠性的最大化。通过使用安森美(onsemi)的方案,客户设计的OBC功率范围从3.3kW到高达22kW均可实现,并兼容高达800V的电池电压。
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插电混合动力汽车(PHEV)、纯电动汽车(BEV)和燃料电池汽车(FCEV)使用OBC模块为高电压的电池组进行充电。PHEV、BEV、 FCEV均属于 “新能源汽车(NEV)”的范畴。OBC的主要功能是将交流电压输入,以适合电池组的电流和电压水平,转换为直流电压输出。虽然许多OBC产品目前都是单向传输(从电网到汽车),目前也出现了双向传输的趋势,使纯电动汽车实现既能从电网获取电能也可向电网反馈电能的能力。
车载充电机模块,顾名思义,是安装于汽车上的,并配备气体或液体冷却装置,应对不同功率水平下的热管理。根据架构不同,OBC的输出电压有时需低至250VDC或以下,当为汽车的主电池组充电时又需达到800VDC及以上。
不论是功率因数校正(PFC)、初级侧DC-DC、或二次整流,安森美都能为您提供最佳方案,解决您的系统需求。我们的汽车OBC系列产品涵盖EliteSiC系列碳化硅MOSFET、 EliteSiC系列碳化硅二极管、 APM、 MOSFET、IGBT、栅极驱动器、车内总线(LIN,CAN,CAN-FD)、模拟信号链(运算放大器OpAmp、电流分流放大器、比较器)、电源IC、系统基础芯片(SBC)、硅二极管。
Our SiC MOSFETs are designed to be fast and rugged and include system benefits from high efficiency to reduced system size and cost. MOSFETs are metal–oxide–semiconductor field-effect transistors with insulated gates. These silicon carbide MOSFETs have a higher blocking voltage and higher thermal conductivity than silicon MOSFETs, despite having similar design elements. SiC power devices also have a lower state resistance and 10 times the breakdown strength of regular silicon. In general, Systems with SiC MOSFETs have better performance and increased efficiency when compared to MOSFETs made with silicon material.
There are many advantages to choosing SiC MOSFETs over silicon MOSFETs, such as higher switching frequencies. High-temperature development is also not a concern when using SiC MOSFET modules because these devices can operate efficiently even in high heat. Additionally, with SiC MOSFETs, you benefit from a more compact product size because all components (inductors, filters, etc.) are smaller.
SiC Modules contain SiC MOSFETs and SiC diodes. The boost modules are used in the DC-DC stages of solar inverters. These modules use SiC MOSFETs and SiC diodes with voltage ratings of 1200V.
A Silicon Carbide (SiC) Module is a power module that operates with Silicon Carbide semiconductors for its switch. The purpose of a SiC power module is the transformation of electrical power through switches to improve system efficiency.
The primary function of SiC Modules is to transform electrical power. Silicon Carbide offers an advantage over silicon because, with less resistance to move away from the source (due to increased efficiency), SiC devices can operate at a higher switching frequency. A SiC based system is also more compact and lightweight than a silicon solution, allowing for smaller designs. Therefore, SiC devices are the ideal solution for situations where you want to increase efficiency and improve your thermal management.
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The 11 kW OBC demonstration design applies matrix converter power topology and reduces the size and quantity of passive components, delivering substantial cost savings.
Elite Power Simulator provides an accurate representation of how circuits work with the EliteSiC semiconductors, including SiC technology manufacturing corner cases.
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