First embedded GaN charger with E-Bike battery

1 min read

Wise-integration, a French company specialising in digital control of gallium nitride (GaN) and GaN ICs for power supplies, and the Savoy Group have unveiled a new GaN charger for e-bikes that’s embedded with the battery of the new electric bike from KILOW, Savoy Group’s e-mobility division.

Introduced at EUROBIKE 2023, running this week in Frankfurt, the e-bike and onboard charger mean that riders are free of two common pain points: running out of power and packing the added weight of portable chargers.

Said to be the world’s first GaN on-board charger, Wise-integration’s GaN devices for e-bikes are a highly integrated solution assembled by the Savoy Group.

“Our charger is embedded in the battery itself, making it the lightest, most compact and convenient charger on the market,” explained Wise-integration CEO Thierry Bouchet. “This technology enables e-bike users to easily charge their bikes on the go, wherever they are.”

Called Cocotte, the e-bike is designed and manufactured by KILOW, a rebranded light e-mobility division of Savoy Group, a French Tier 1 automotive supplier. In addition to its urbanised e-bike, KILOW’s e-mobility line includes e-bikes for street-and-trail, e-scooters and its new four-wheel off-roader, La Bagnole.

“Wise-integration’s onboard charger places our urban e-bike in a class of its own,” said Émile Allamand, CEO of Savoy Group. “Combined with Cocotte’s automatic gearbox that identifies the most appropriate gear for the situation and effort of the cyclist, and its other features, KILOW packages the best of leading-edge technologies in lightweight micro-mobility.”

Building on the success of the Cocotte offer, Bouchet said that Wise-integration would look to extend its GaN products and solution for power-supply and e-bike manufacturers across the European market. Thanks to the combination of the WiseWare digital controller and WiseGan, Wise-integration can improve power density that provides more power for embedded fast-charging capabilities.

Gallium nitride (GaN) is a wide-bandgap, next-generation semiconductor technology that has become key for development of advanced power electronics. It operates up to 20x faster than silicon and provides up to 3x the power or 3x the charge in half the size and weight of silicon devices.