CODING INTERNATIONAL CO LTD

Expanding its common ISOpro isolation product profile, Silicon Laboratories Corporation., a manufacturer regarding high performance, analog demanding, mixed signal ICs, introduces an ac current sensor family which replaces traditional latest transformers. Silicon Labs’s new Si85xx ac current sensors provide up to 5 kVrms of electrical isolation to ensure safety compliance for various critical power delivery systems such as ac-dc moving over power supplies, separated dc-dc supplies, motor control applications, and electronic lighting ballasts.

The Si85xx alternating current sensor provide a reliable, cost-effective replacement for antiquated transformers for today’s modern-day power delivery methods. Traditional transformers are huge, bulky magnetic factors that contribute important supply losses and also have parasitics that complicate program design. The highly integrated ISOpro ac current sensors include a sophisticated architecture that minimizes the need for high priced discrete components with regard to filtering and reset circuitry. An obtainable small-footprint QFN package eases pcb (PCB) space constraints with a small 4 x 4 x 1 mm profile.

With a measurement accuracy and reliability of better than 5%, the actual Si85xx AC current sensor are available in A few, 10, and Something like 20 A versions. They offer a large output sign level of 2.3 V at full-scale output range, eliminating the necessity for an external amplifier. Any “ping-pong” output mode permits one sensor to change two current transformers and also associated components within full-bridge applications, reducing panel footprint by greater than 50% and BOM cost through more than $0.30 (Bucks).

Offering extremely minimal parasitic losses, the Si85xx current sensor permit designers to maximize program efficiency and meet up with aggressive power costs for green electricity standards. The devices’s lower resistance (<1.3 milliohms) and small parasitic inductance (<2 nH) result in extremely effective power supplies which might be easier and quicker to design. To alleviate the design process, the particular Si85xx ac sensor household is supported by a complete set of development tools including the Si85xx-EVB evaluation board and the OPENLPPOL-EVB open-loop point-of-load reference design.

The particular Si85xx ISOpro devices integrate the entire current sensing list of materials into two spacing-saving bundle types:
      A 20-pin SOIC having a 5 kVrms isolation standing for systems meant for deployment in international markets that are driven from widely numerous ac input supply voltage ranges.
      A concise 4x4x1 mm QFN package for space-constrained designs requiring the isolation rating around 1 kVrms. This QFN system is one-fourth the size of the smallest aggressive product and 5 times thinner than a traditional transformer.

Samples of the Si85xx AC current sensor are available now.