Wesley Chan, a partner at Google Ventures is listed as a director on Transphorm's latest regulatory filing as the company raised $20m in its C round.

Transphorm, a US-based developer of power conversion technology, has raised $20m in a series C round led by Google Ventures, the corporate venturing unit of search engine group Google.

Venture capital firms Kleiner Perkins Caufield & Byers, Foundation Capital and Lux Capital were also part of the C round.

Transphorm is trying to reduce the more than 10% of all electricity lost due to power to electricity conversion inefficiencies and previously raised $18m.

Wesley Chan, a partner at…