The rapid expansion of 5G has promoted the broader application scenario demand for PoE technology in the IoT field, including IP-based terminal products such as wireless AP, IP phone, IP network camera, which is the most important field of PoE technology application at present. Through the deployment of PoE power supply technology, it solves the problem that wireless AP is difficult to supply power in the ceiling ventilation layer, the problem of IP phone power failure due to accidental events, and the problem that IP network cameras need to obtain external power supply.

PoE switches deployed based on PoE power modules are the most common power supply devices. The PoE switch uses QoS, VLAN, and ACL functions to meet network requirements on priority allocation, delay, jitter, security, and data isolation.Therefore, PoE switches also have large application scenarios in security monitoring, building control, retail, entertainment and RFID and other emerging markets.Such as PoE smoke detectors, POS information terminals, PTZ cameras, network printers, and even WiMax base stations and more new IoT intelligence fields.

At present, PoE technology has been applied in more intelligent fields, and has promoted the development of related intelligent fields. The automatic, autonomous, self-healing and self-optimizing PoE power supply brings users a more convenient and higher quality IoT network communication application experience.

RSC009-AF is a switch power module based on PoE technology. The core component of the module is the PoE power management chip. Through the chip and its supporting circuit, the PD receiving end device detection, classification and voltage adaptation functions are completed.

The RSC009-AF PoE power module uses 5969B and 5974A chips to achieve PoE power supply with CLASS 4 power class.The circuit topology of RSC009-AF PoE power module is realized by flyback converter, and the primary side feedback voltage regulation and secondary side synchronous rectification technology are used.

RSC009-AF PoE power moduleChip 5969B provides a complete interface to power over Ethernet (PoE) system IEEE802.3af/at for electrical equipment (PD).The power module provides PD devices with detection signals, grading signals, and integrated isolated power switches with inrush current control.

During a surge, RSC009-AFLimit the current to 180mA until the isolated power MOSFETs are fully turned on and switch to higher current limits (720mA to 880mA). The component has an input UVLO with wide hysteresis and long period interference pulse shielding to compensate for the resistance attenuation of the twisted pair cable and ensure interference-free transmission during power on/off.

RSC009-AF PoE power moduleThe power management chip used is 5974A, and many functions are integrated inside the chip, making the RSC009-AF power module a wide input voltage range, active clamp, current mode PWM controller for controlling the forward converter in power over Ethernet (PoE) electrical equipment (PD).

RSC009-AF Power moduleSuitable for the input voltage range of general purpose or telecommunications systems, the unique circuit design enables stable output without the need for optocouplings.

RSC009-AF PoE power module chip and component selection, circuit principle, power ripple and noise, output parameters fully comply with IEE802.3af /at related standards.

RISUNIC is committed to creating more valuable and better performing power products that make power deployment easier and easier.