Power conversion technology developer Arctic Sand Technologies has closed a $19m series B round led by Murata and backed by GE Ventures.

Electronic component manufacturer Murata Manufacturing Company led a $19m series B round for US-based power conversion semiconductor developer Arctic Sand Technologies on Thursday.

GE Ventures, the corporate venturing subsidiary of General Electric, (GE) also invested in the round, as did investment manager Northwater Capital Management and venture capital firm Arsenal Venture Partners.

Spun out of university MIT, Arctic Sand is working on power conversion and LED boosting technology that can help mobile devices run more efficiently, with smaller batteries. It…