JoulWatt Technology Co., Ltd. JoulWatt Technology Co., Ltd. is a China-based analog integrated circuit design company that engages in the research, development, design, and sale of power management and signal chain chips. The company offers a comprehensive portfolio of products including AC-DC chips, DC-DC chips, battery management chips, linear power products, detection chips, interface chips, converter chips, and test chips; these serve applications in automotive electronics, enterprise computing and storage, consumer electronics, communication equipment, industrial controls, renewable energy, and other fields. Founded in 2013 and headquartered in Hangzhou, China, JoulWatt Technology operates primarily in China with exports to Taiwan China, Hong Kong China, and Korea, employing around 1,250 people and following a virtual IDM model to deliver high-efficiency, high-performance analog semiconductor solutions. Recent developments include the announced acquisition of Shanghai Lijiwei Semiconductor Co Ltd for 5.49 million CNY on April 22, 2025; plans by the company and a unit to acquire a 40.9% stake in Nanjing TianYiHeXin Electronics Co., Ltd. for 318.7 million CNY in May 2025; and the launch of multiple automotive electronic chips alongside strategic expansions in multiphase power solutions for high-end analog localization.