supertex chips were acquired by MCHP
MCHP announced that it has agreed to acquire Supertex Inc., a producer of high-voltage analog and mixed-signal chips that can connect IC chips on 1,000-volt direct current lines, for $394 million in cash. There are also many different applications in 110-volt high-voltage environments, which is where the acquisition came in - they are the high-voltage experts in the industry.