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XS2180A
XS2180AIEEE802.3 af/at 4ch PoE-PSE
DownloadXS2180A is a four-channel Power Sourcing Equipment (PSE) power controller designed for IEEE 802.3at/af compatible PSE applications. The device provides Powered Device (PD) detection, classification, current limiting, and load disconnect detection. It supports both automatic mode and software programming, including two-event classification and 5-level detection and classification for high-power PDs. Operating on a single power supply, it can deliver up to 70W per port (hardware-configurable) and offers large capacitor detection for traditional PD designs.
Specifications
Key Features
- Compliant with IEEE 802.3at/af
- 0.25Ω current sense resistor
- Up to 70W per port
- 9-bit real-time port current and voltage monitoring
- I2C supported
- Supports independent power supply operation
- Supports DC load disconnect detection
- Over-temperature protection function
- 32-PIN QFN32L (5mm×5mm) power package
Power over Ethernet (PoE) mid-span injectors can be used with switches/routers that lack built-in PoE capabilities. These devices inject power into Ethernet cables using the spare wire pairs, allowing them to power remote devices such as IP cameras, VoIP phones, and wireless access points. Mid-span injectors connect between the switch and the powered device, providing data connectivity through the existing network while supplying electrical power. This solution is particularly useful for upgrading existing infrastructure without replacing the entire switch, and offers benefits such as separate power management, redundancy in case of switch failure, and the ability to upgrade network speeds independently of the power supply.
