POWERBUS PB331

PB331 is a slave communication IC for POWERBUS technology. POWERBUS is a low-voltage power bus technology. By modulating control signals over the power cable, it eliminates the need for separate control and power cables used in traditional systems, while significantly improving communication reliability. POWERBUS employs voltage transmission with current signal return, providing high immunity to communication interference. PB331 is compatible with various field cables and supports long-distance communication. Cables can be deployed in any topology — bus, tree, or star — greatly simplifying installation and wiring, preventing miswiring, and reducing maintenance complexity. PB331 can fulfill both power supply and communication requirements for devices via the POWERBUS bus.

• Bus-powered: no electrical isolation required between communication and power supply
• Strong bus noise immunity, can be routed alongside AC mains
• Supports up to 256 devices on a single bus
• Communication distance up to 3000m
• Supports non-polarity wiring
• Supports any topology: tree, star, and bus
• No special cable requirements
• Maximum bus voltage up to 48V
• Transparent serial protocol, compatible with existing RS485 systems
• Adaptive 9600bps and 2400bps half-duplex communication
• Low-cost solution supporting both isolated and non-isolated designs with guaranteed EMC performance

• Fire monitoring
• Smart building
• Centralized meter reading
• Smart lighting
• Sensor network
• Automation control