MAX5986AETE+

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Power over Ethernet (PoE) is a technology that enables electrical power to be carried over an Ethernet cable in addition to data. PoE controllers, such as the MAX5986AETE+, use this technology to provide power from the Ethernet source to an endpoint device such as a network camera, Wi-Fi access point, and so on. The MAX5986AETE+ is an integrated PoE controller and high-side switch in one IC, providing high power efficiency and minimal power dissipation.

The MAX5986AETE+ controller is especially well-suited for Power-over-Ethernet (PoE) applications. It is designed to provide protection and high efficiency, while addressing the stringent power requirements of IEEE 802.3at, 802.3af and nonstandard PoE applications. The device operates over a wide output supply voltage range (20V to 57V) and a wide input voltage range (18V to 57V).

The MAX5986AETE+ provides high performance and optimal power conversion, while being simple to integrate thanks to its integrated switch functionalities. It also features an auto-disconnect feature that allows the power to be disconnected when an overload or a short-circuit occurs, providing reliable protection for the powered device. Additionally, the device supports both isolated and non-isolated flyback architectures and provides a low standby current of typically 430μA.

The basic operating principle of the MAX5986AETE+ is to convert the PoE source voltage to the desired operating voltage of the powered device. The device includes two main stages: a power conversion stage and a control stage. In the power conversion stage, the input voltage is converted to the output voltage, either through a flyback, buck, or boost topology. On the control stage, the device provides a high-side switch to isolate the power, current protection, open and short circuit protection, overload protection, and thermal protection features, among other features.

The device utilizes the MAX5986AETE+ Advanced Power Over Ethernet (PoE) Controller, which is designed to protect and support proprietary PoE interfaces as well as IEEE 802.3at, 802.3af and nonstandard PoE applications. It features low EMI, low current consumption, excellent efficiency, and wide frequency operating range. The device operates over a wide output supply voltage range (20V to 57V) and a wide input voltage range (18V to 57V).

In summary, the MAX5986AETE+ is a high-performance integrated PoE controller and high-side switch in one IC. It is ideal for Power-over-Ethernet (PoE) applications, providing protection and high efficiency, while addressing the stringent power requirements of IEEE 802.3at, 802.3af and nonstandard PoE applications. The device allows for full flexibility in output voltage, boasts low EMI, low current consumption, excellent efficiency, and a wide frequency operating range. Thus, allowing a wide range of endpoints to benefit from its features.

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