One method for reducing the size of PLC I/O solutions is to reduce the number of digital channels that need to be isolated. Integrating three Maxim products, including a transformer driver, into the Corona design reduces isolated channels and eliminates the need for high-power optocouplers and discrete components. These advancements reduce power consumption by 16%, solution size by 38%, and cost by 23%. The Maxim devices used in Corona are specifically designed for harsh industrial environments with operating temperatures ranging from -40°C to +125°C, making them ideal for use in PLCs and other automation applications.
Key Advantages
• Analog integration: reduces isolation channels to four, while Maxim's digital isolator eliminates the need for opto-isolators; optimized for 16, 24, and 32-channel input designs, the digital input serialization SPI buses can be daisy-chained to further reduce the number of isolation channels, leading to increased savings.
• Lower power consumption: uses 16% less power than the traditional design approach.
• Lower cost: uses 38 fewer parts than a traditional design to create a cheaper integrated solution.
• Smaller size: offers 51% fewer components than a traditional design.
• MAX31911: industrial translator/serializer, digital input octal offers best-in-class power consumption and reduces the number of board components.
• MAX14850: 6-channel digital isolator, enables low power consumption and stable high-temperature performance. UL1577, CSA, and IEC 60747-5-2 safety certifications. Replaces optical isolators, which have limited LED lifespan, with a solution that lasts 5 times longer.
• MAX13256: 36V H-bridge transformer driver simplifies isolated electrical designs.
• Complete reference design available in 90mm x 20mm Pmod™ format.
