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Eaton to supply DC-DC converters for new battery electric truck

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David Sickels is the Associate Editor of Tire Review and Fleet Equipment magazines. He has a history of working in the media, marketing and automotive industries in both print and online.

Eaton‘s eMobility business has been awarded a contract to supply a 24-to-12-volt DC-DC converter for use in a commercial heavy-duty battery electric vehicle (BEV) that will power accessories, such as antilock brakes and lighting. The BEV, which was not named by Eaton, will be sold in the North American and Chinese markets beginning later this year.

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“DC-DC converters are an essential part of our eMobility product portfolio and are used in a variety of vehicle applications,” said Pratik Trivedi, general manager of Eaton’s eMobility business. “Like traditional vehicles, electrified vehicles (EVs) have low-voltage loads on board-like infotainment systems, GPS and safety devices. So efficiently converting power from high to low is key, but it is also important to have a secondary converter to provide power to the traditional 12-volt loads.”

Eaton’s specialty converter, also known as a battery equalizer, works in conjunction with another converter that takes power from the BEV’s 600-volt system and steps it down to 24 volts. The eMobility unit then takes it down to 12 volts for use in low-voltage systems and to power a backup 12-volt battery in case of a fault in the main power supply. Having this equalizer function, the 12-volt battery and a split 24-volt battery system ensures essential safety equipment can operate on 12 volts in the event of a power failure. That capability makes the converter unique among product offerings in this space.

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Eaton’s DC-DC converter also includes noise reduction and interference rejection so there is no interference between the unit and vehicle electronics, the company says.

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