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Part Status:	Obsolete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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Introduction

The SI3452-B01-GM is a power over ethernet (PoE) controllers that is used in a wide range of networked applications. It is a single chip power management solution that integrates multiple I/O elements and provides advanced power control and various system functions. This integrated solution allows a system designer to quickly design a power system architecture and control programs.

Application Field

The SI3452-B01-GM is suitable for a variety of Power over Ethernet (PoE) applications. It has two paths of output power and two paths of input power. The input path is designed to receive power from a PoE network and convert it to DC power, whilst the output path handles the power conditioning, regulation, and distribution to power consumer PoE devices. The SI3452- B01-GM provides full over-current, over-voltage, and short-circuit protection for up to two ports of consumer power.The SI3452-B01-GM has many applications in a wide range of fields, such as Industrial Automation, Building Automation, Security, Surveillance, Medical, and more. It also enables remote power management, reducing the time and effort required to design and implement a power system.

Working Principle

The SI3452-B01-GM is a single-chip power management solution. It integrates multiple I/O elements and provides advanced power control and various system functions. The SI3452-B01-GM is designed to convert the power received from a PoE network into DC power, and also to handle the power conditioning, regulation, and distribution to power consumer PoE devices.The power conversion process starts with a rectifier (DC converter) which converts the incoming AC voltage to DC voltage. The DC voltage is then filtered to reduce the amount of ripple and noise, and is sent to the built-in adjustable regulator (Buck converter). The Buck converter is used to adjust the overall voltage level and provide current or voltage settling.Once the voltage has been regulated, the SI3452-B01-GM provides power over Ethernet (PoE) features such as over-current protection and input/output current limits. The PoE controller also provides voltage, current, and temperature monitoring, as well as Power Good, enable/disable, and soft start/stop functions.The SI3452-B01-GM is also able to provide three different output voltage levels, depending on the desired application. It has the option to configure the voltage level by applying a resistor, making it suitable for a variety of PoE applications.

Conclusion

The SI3452-B01-GM is a power over ethernet (PoE) controllers that is suitable for a variety of Power over Ethernet (PoE) applications. It has two paths of output power and two paths of input power and is designed to convert the power received from a PoE network into DC power, and also to handle the power conditioning, regulation, and distribution to power consumer PoE devices. The SI3452-B01-GM provides full over-current, over-voltage, and short-circuit protection for up to two ports of consumer power. It also enables remote power management, reducing the time and effort needed to design and implement a power system.

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