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XS2801B
XS2801BIEEE802.3 af DC/DC
DownloadXS2801/B is a flyback power supply compatible with IEEE 802.3af standards, featuring primary-side constant voltage and constant current control. It has an integrated 200V/0.5Ω power transistor. Both constant voltage (CV) and constant current (CC) outputs are achieved through primary-side detection, eliminating the need for optocouplers and secondary-side feedback circuits, which significantly reduces system costs. The device includes specific CV and CC control modules and can implement a pseudo-PD+DC/DC solution, further saving BOM costs.
Specifications
Key Features
- Primary-side constant voltage and constant current control
- Low start-up current of 15μA
- Built-in integrated 200V/0.5Ω power transistor
- 9-bit real-time port current and voltage monitoring
- CV and CC control
- Primary-side adaptive current peak regulation
- Soft start
- Built-in Leading Edge Blanking (LEB)
- Cycle-by-cycle current limiting
- VDD Over-Voltage Protection (OVP)
- Under-Voltage Lockout (UVLO)
- Over-Temperature Protection (OTP)
- VDD Clamp
Network cameras and IP phones are both Power over Ethernet (PoE) enabled devices that can receive power and data through a single Ethernet cable, simplifying installation and reducing wiring requirements. Network cameras provide surveillance capabilities with features such as motion detection, remote monitoring, and high-definition video streaming. IP phones enable voice communication over IP networks, offering features like caller ID, call forwarding, and integration with business communication systems. Both devices are commonly used in commercial environments and can be powered directly by PoE switches or injectors that comply with IEEE 802.3af/at standards.
