SI3452B-B01-GM

Series:	--
Packaging:	Tube
Part Status:	Obsolete
Type:	Controller (PSE)
Number of Channels:	4
Power - Max:	40W
Internal Switch(s):	Yes
Auxiliary Sense:	No
Standards:	802.3at (PoE+), 802.3af (PoE)
Voltage - Supply:	45 V ~ 57 V
Current - Supply:	3.7mA
Operating Temperature:	-40°C ~ 85°C
Package / Case:	40-VFQFN Exposed Pad
Supplier Device Package:	40-QFN (6x6)
Base Part Number:	SI3452

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SI3452B-B01-GM Application Field and Working Principle

Introduction

SI3452B-B01-GM is a power over ethernet (PoE) controller, specifically designed for the current 24-48V PoE industry standard, and it is a fully-integrated solution for powering and monitoring Ethernet-enabled devices. The device provides users with a simple, cost-effective way to power remote devices over pre-existing Ethernet cabling, eliminating the need for expensive, dedicated power outlets and wiring.

Application Field

The SI3452B-B01-GM is suitable for a variety of applications in which it can be used as a network-managed power source and/or PD controller. Some of its primary uses include:

• Networking and Communications Infrastructure: The SI3452B-B01-GM can be used to supply power to networking and communications applications such as switches, routers, VoIP systems, and other Ethernet-enabled devices.
• Industrial Automation: The SI3452B-B01-GM can be used to power and manage sensors, machine controllers, and other automation equipment in a variety of industrial settings.
• Powering Access Points: The SI3452B-B01-GM can be used to power network access points in a variety of configurations.
• Security Surveillance: The SI3452B-B01-GM can be used to power security cameras and surveillance devices.
• Medical Monitoring: The SI3452B-B01-GM can be used to power and monitor medical devices such as vital sign monitors and IV pumps.

Working Principle

The SI3452B-B01-GM is based on the IEEE 802.3bt-SSM (Standard for Single-Port Mid-Power) standard, which allows for a maximum output power of 30W. The controller is capable of automatically detecting the PD (powered device) type as well as the required power, which enables automatic and remote power management.The SI3452B-B01-GM features an integrated 85V-265V AC/DC power adapter for use in PoE applications, as well as a power management IC (PMIC) for power monitoring and control. The integrated PMIC contains multiple voltage regulators and switching circuits that monitor and control the output current. The device also integrates a power transfer algorithm that dynamically adjusts output current to match the PD power requirement to ensure a safe and reliable power connection.The SI3452B-B01-GM can also be used as a system powerswitch when connected to an Ethernet switch. The device will automatically detect the status of the Ethernet connection and will automatically shut down the power if the connection is lost. This prevents damage to devices in the event of a network issue.

Conclusion

The SI3452B-B01-GM is a fully-integrated solution for powering and monitoring Ethernet-enabled devices over existing power cabling. Its features include an integrated 85V-265V AC/DC power adapter, a power transfer algorithm for controlling output current, and an integrated power management IC (PMIC) for monitoring and control. The device is suitable for a variety of applications in which it can be used as a network-managed power source and/or PD controller, such as networking and communications infrastructure, industrial automation, powering access points, security surveillance, and medical monitoring.

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