LT4294IMS#PBF

Due to market price fluctuations, if you need to purchase or consult the price. You can contact us or emial to us:   sales@allicdata.com

PMIC - Power Over Ethernet (PoE) Controllers

Introduction

The LT4294IMS#PBF Power Manager is a high efficiency power manager IC (PMIC) designed for Power over Ethernet (PoE) applications. Its feature set is designed for applications such as PoE powered diagnostic instruments, monitoring systems and Industrial Ethernet (IEE) where high efficiency and power management features are required. It features an integrated OVP (over-voltage protection) and OCP (over-current protection) circuit, fault reporting and power good indication, a low jitter differential clock generator and several fault conditions.

Application

The LT4294IMS#PBF Power Manager is ideal for PoE applications that require both high efficiency and power management features. It can be used in applications such as wide area networks (WAN), enterprise level data centers, automotive electronics and industrial networks. The device also has a feature set that enables PoE implementations to be optimized for each specific application.

Features

The LT4294IMS#PBF Power Manager provides several system-level functions in Power over Ethernet (PoE) applications. It features an integrated OVP (over-voltage protection) and OCP (over-current protection) circuit, fault reporting and power good indication, a low jitter differential clock generator and several fault conditions. It also provides adjustable output regulation functions for PoE applications. The device can operate between 0.83V and 1.2V and with currents up to 10A.

The device also provides several features that enhance the system performance. These include active voltage scaling (AVS), remote sensing and disconnect, programmable delay timer and transient suppression. AVS allows the system to dynamically adjust the output voltage to optimize the power efficiency while providing power good indication. Remote sensing and disconnect allows the device to detect the presence of a PoE network device and disconnect it if necessary. The programmable delay timer functions provide additional fault protection and transient suppression limits reduce the effects of voltage transients on the system.

Working Principle

The LT4294IMS#PBF Power Manager works by sensing the voltage on the PoE network. When the sensed voltage is below the minimum value, it will disable the power output and signal a fault condition. When the voltage is within the minimum and maximum voltage settings, the device will regulate the output current to maintain the PoE network in-spec. The device also provides adjustable output regulation from 0.83V to 1.2V with currents up to 10A.

The LT4294IMS#PBF Power Manager also provides a range of fault protection features. These include an integrated over-voltage protection circuit, over-current protection, active voltage scaling and remote sensing/disconnect. These features ensure reliable operation and reduce the risk of PoE network failure due to excessive current or voltage levels. The device also provides power good indication and a low jitter clock generator to synchronize the device to the PoE network.

Conclusion

The LT4294IMS#PBF Power Manager is an ideal PMIC for PoE applications that require high efficiency and power management features. Its range of features and adjustable output regulation functions allow the device to be tuned for maximum efficiency and power management. The integrated fault protection features and low jitter clock generator ensure reliable network operation and the power good indication provides a visual indication of system health.

The specific data is subject to PDF, and the above content is for reference