Transphorm

Transphorm was founded in February 2007 in Delaware.^[3][4] It is headquartered in Goleta, California, close to the University of California at Santa Barbara (UCSB) from which the company is an offshoot and where the co-founder and CTO, Umesh Mishra, is a professor.^[5][6][7]

In 2011, Google Ventures invested $20 million into Transphorm. The money was to assist the company's development of power conversion technologies.^[8][9] It also received capital from Kleiner Perkins and others amounting to $18 million.^[9]

In September 2012, Transphorm released the TPH2006PS which was the first JEDEC qualified 600V HEMT in the industry.^[10][11]

In November 2013, Transphorm teamed up with Fujitsu Semiconductor to integrate its GaN power devices into power supply businesses with Fujitsu as well as Fujitsu Semiconductor only taking minority equity positions.^[12][13][14]

In 2015, it received a $70 million investment which was led by the global investment firm KKR.^[15]

Transphorm went public by reversing merging with a special-purpose acquisition company, Peninsula Acquisition Corporation, in February 2020.^[16][17] In August 2021, Transphorm acquired 100% interest in the AFSW wafer-fab facility from GaNovation, a manufacturer for high voltage GaNs.^[18]

In March 2023, Transphorm released the first gallium nitride (GaN) System-in-Package (SiP) together with Weltrend Semiconductor Inc.. The Weltrend SiP will be showcased by Transphorm at the 2023 Applied Power Electronics Conference (APEC).^[19][20]

Together with Yaskawa Electric, Transphorm has developed a new patented technology for GaN power transistors with a short circuit withstand time (SCWT) of 5 microseconds in August 2023.^[21][22]

In January 2024, Renesas Electronics agreed to acquire Transphorm for $339 million.^[23] On June 20, 2024, it was announced that Renesas had completed the purchase of the company.