23/01/2024EV adoption faces a significant hurdle – long charge times. Onsemi tackles this challenge with nine new power-integrated modules (PIMs) for bidirectional DC-DC power transfer. As electric vehicles become more prevalent, the concern over lengthy charging times grows. Onsemi’s PIMs aim to accelerate this process, offering benefits beyond EVs, particularly in bidirectional power flow applications. Long charging times are a critical deterrent to EV adoption. Consumers are reluctant due to the inconvenience of extended charging periods. Onsemi addresses this issue by introducing innovative PIMs designed to enhance charge times, potentially revolutionizing the EV landscape.
At CES, Onsemi unveiled nine power-integrated modules tailored for bidirectional DC-DC power transfer. While initially targeted at EVs, the modules prove versatile for any high-power DC-DC conversion, especially in bidirectional scenarios like vehicle-to-grid applications.
Fig.1 – Power systems characterized by high current, high voltage, and bidirectional energy flow might necessitate the adoption of innovative architectures, such as the dual active bridge CLLC converters.
Designing efficient one-way DC-DC converters, especially for high currents and voltages, is challenging. EV charging compounds the problem with standard high voltages and currents for faster charging. Onsemi’s PIMs aim to address this challenge, minimizing switching losses and enhancing overall system efficiency.
Bidirectional power flow complexity arises in applications like vehicle-to-grid scenarios. Onsemi’s PIMs offer a solution by supporting bidirectional power transfer, potentially transforming how power is managed and utilized in various applications beyond EVs. Onsemi’s PIMs promise efficient and high-performance power electronics, not only improving current systems but also opening doors to new applications. The bidirectional capabilities of these modules can reshape the landscape of power conversion and usage.
Inside the EliteSiC PIMs are Gen3 SiC MOSFETs with reported industry-leading switching efficiency. Silicon Carbide’s intrinsic advantages over silicon contribute to the PIMs’ superior performance, supporting various architectures with low on-resistance. With a maximum breakdown voltage of 1,200 V and 350 A continuous current (700 A pulsed), the PIMs empower designers to enhance power handling in both on-board and off-board charging solutions. Available in F1 and F2 packages, they support up to 100 kW of output power.
Onsemi reports a significant reduction in charger size and weight, potentially resulting in an 80% charge in just 15 minutes. The PIMs’ application extends to bidirectional charger controller development, showcasing their versatility. Onsemi provides additional design support tools, including the PLECS model generator and Elite Power Simulator. These tools aid designers in optimizing the integration of PIMs into their systems.
Fig. 2 – Switching energies (Eon, left. Eoff, right.) show the improved performance of the SiC FETs, reducing wasted energy and increasing the efficiency of DC-DC converters.
While traditional vehicles won’t disappear overnight, innovations like Onsemi’s PIMs contribute to the ongoing momentum in EV development. Faster charging and bidirectional power transfer are key steps toward a more sustainable and efficient future. The advancements in charging technologies hint at a future where EVs play a vital role in supporting grid operations. As the world leans towards electrification, Onsemi’s PIMs could be a pivotal step in reshaping how power is delivered and managed.
Onsemi’s EliteSiC PIMs represent a significant leap forward in addressing EV charging challenges. Their potential impact on charging efficiency and bidirectional power flow opens avenues for diverse applications. As the electrification trend continues, these innovations could redefine power management.
Original article: https://www.allaboutcircuits.com
