TPS23770PWP

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Power management integrated circuits (PMICs) are a class of complex integrated circuits that can be used to provide power control, voltage regulation, and complete system clock management at a single device. Power Over Ethernet (PoE) Controllers are a type of PMICs that are used to power network data and assist in the delivery of power over Ethernet. In this article, we will be discussing the application field and working principle of the TPS23770PWP PoE Controller.

The TPS23770PWP is an IEEE 802.3bt-compliant Type 3 power controller with CC/CV and programmable current limit. It supports up to 100W of output power with both 12V and 24V output support. It is a single-chip solution with integrated MOSFETs, a fusing control logic and a high side current sense amplifier that offers an adjustable power limit. This PoE controller is designed to be used in high-power, high-speed applications such as LED lighting, motor drives, and other power-demanding end-point applications.

The TPS23770PWP PoE Controller works by cycling the MOSFETs on and off to implement pulse-width modulation (PWM) control over the output voltage. This PWM control is regulated by the internal current limit and power limiting control loops. The internal current limit control loop regulates the output current by adjusting the duty cycle of the pulse, while the maximum power limiting control loop regulates the maximum output power, allowing the system to choose the most efficient operating point.

The TPS23770PWP-P offers wide range of features including high output current accuracy and low output voltage ripple. It offers programmable output current and short-to-ground protection, as well as over-voltage protection on the output and under-voltage detection. It also has a programmable operating frequency and can be configured to operate with different power topologies such as Flyback, Buck, and SEPIC.

The TPS23770PWP is a highly efficient and reliable PoE controller suitable for a variety of applications. It provides low-power operation with fast transient response and good thermal performance. It also has a low power loss at high frequencies and provides accurate output current regulation. The TPS23770PWP is fully compliant with IEEE 802.3bt standards and is ideal for use in power demanding Ethernet applications that require marginal and remote power delivery.

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