Semiconductors and Semiconductor Equipment
Company Overview of Cambridge Semiconductor Limited
Cambridge Semiconductor Limited, doing business as CamSemi, provides power management integrated circuits for optimized energy-efficient off-line power conversion. The company offers primary side sensing controllers that deliver current and voltage regulation with low no-load power consumption; and resonant discontinuous forward converter controllers that provide SMPS solutions for linear replacement in external or embedded PSU applications. Its products are used in various consumer and industrial charger and adapter applications, including mobile phone, feature phone, smart phone, media tablet, and cordless phone applications. The company serves consumer brands in the United Kingdom and int...
St Andrew’s House
St Andrew’s Road
Cambridge, CB4 1DL
Founded in 2000
Key Executives for Cambridge Semiconductor Limited
Founder, Chief Scientific Adviser and Director
Founder and Scientic Adviser
Compensation as of Fiscal Year 2015.
Cambridge Semiconductor Limited Key Developments
CamSemi Launches Two New Controllers with Extra Protection for Smartphone Batteries
Aug 8 14
CamSemi announced specific variants of its recently launched C2173 and C2174 fast start Primary Side Sensing controllers to comply with an additional battery protection requirement that is being increasingly specified by smart phone handset manufacturers. The new C2175 and C2176 controllers include an intelligent foldback feature, offering output under voltage protection and target low cost MoU-compliant, USB smartphone chargers and other universal input applications rated at 8 W and 10 W respectively. This additional protection feature within the two variants is activated when a fault within the handset's normal charging routine or with one of its battery cells causes the output voltage to fall below 60% of its specified value. The controller shuts down the charger before issuing regular restart pulses to maintain its fast-start performance. The pulses either restart the normal charge cycle or incrementally charge the battery to a 3 V threshold before normal charging can continue. The new C2175 and C2176 PSS controllers offer smartphone charger manufacturers all the same features, cost and performance benefits as the company’s other C2170 controllers targeting higher power applications including: more efficient switching of bipolar transistors to deliver significant margins on the higher operating efficiencies required by DoE level 6 regulations. Five star (less than 30 mW) no-load power (NLP) performance, also with significant margin and fast-start charging without needing an active start-up switch. An integrated output transient detection feature can be used to help manufacturers further reduce NLP while maintaining fast transient response. C2175 is packaged in SOT23-6, C2176 in SOP8 and samples of both controllers are available now.
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