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Alpitronic is using 1200V silicon carbide (SiC) modules from Infineon for a dual output vehicle-to-grid (V2G) wall charger

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Italian charger designer Alpitronic has launched the first dual port 50kW wall-mounted DC system for fast charging of one vehicle at 50 kW or of two vehicles simultaneously at 25 kW each by using silicon carbide modules from Infineon Technologies.

The HYC50 is based around Infineon’s EasyPACK CoolSiC MOSFET 1B and 2B modules in combination with the EiceDRIVER X3.

The CoolSiC technology enables up to 97 percent efficiency in a bidirectional design for vehicle-to-grid (V2G) operation in a footprint of 125 x 52 x 22 cm that weighs less than 100 kg. The size makes the charger ideal for indoor wall mounting, though it can also be mounted flexibly on a pedestal outdoors. The charger supports the charging standards CCS1 and CCS2 with a capacity of 150 A, CHAdeMO with a capacity of 125 A, as well as GBT.

In this particular design, Infineon’s EasyPACK 1B and 2B modules, which include CoolSiC MOSFETs, a NTC temperature sensor, and PressFIT contact pins, were able to increase power density by about 50 percent. In addition, by using CoolSiC technology, the noise level was significantly reduced from 65 dB to less than 50 dB.

Besides the necessary power devices, Infineon also provided the matching drivers. The X3 driver IC is particularly suitable for the modules in this design, offering a number of decisive advantages through its configurability and active and passive monitoring options. For instance, it enables additional sensor points for operational monitoring, with several gate drivers providing additional temperature points as well as gate voltage monitoring. This allows the temperature and voltage to be adjusted exactly according to the requirements of the SiC MOSFETs, minimizing static conduction losses and avoiding overloads.

The operating points in the field can also be optimized by OTA (Over-the-Air) updates and these can also influence the parameters in the gate driver. This allows systems in different climates can be optimized for the corresponding environmental conditions.

The HYC50 follows 150kW and 300kW fast charger designs from alpitronic for street chargers.

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“We are committed to working closely with customers like alpitronic to help them realize unique designs enabling superior system solutions,” said Dr Peter Wawer, president of the Industrial Power Control Division at Infineon. “In addition to comprehensive system expertise and many years of experience, we offer first-class solutions such as our portfolio of EasyPACK 1B and 2B modules with the latest 1200 V CoolSiC MOSFET technology to increase the efficiency as well as the power density. The devices can be flexibly combined with suitable drivers to meet the requirements of each customer and their individual project.”

“With Infineon’s CoolSiC EasyPACK modules in combination with a perfect matching driver IC, we were able to significantly improve the efficiency of our new hypercharger,” said Philipp Senoner, co-founder and managing director of alpitronic. “We are therefore very pleased to have Infineon as a reliable and competent partner at our side, providing a wide range of CoolSiC MOSFET, gate drivers and the necessary understanding of our specific requirements.”

The EasyPACK CoolSiC MOSFET modules will be available in the first half of 2022. More information will be available at www.infineon.com/easy once the products are launched. The HYC50 will be available starting in Q2 2022.

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