SI3483
SI3483 is POWER MANAGEMENT CONTROLLER manufactured by Silicon Labs.
POWER MANAGEMENT CONTROLLER
Features
- Enables use of smaller power
- Supports classification-based and supplies for up to 64-port Po E
LLDP power negotiation systems with Si3459 and Si3454
- Supports individual port priority and
PSE interface ICs port configuration
- Can operate with or without a host
- Supports Power supply status from
- Configuration save capability up to 3 power supplies
- Pin-selectable SPI or UART interface- 24-pin Quad flat pack package
- Pin-selectable UART data rate
- 4x4 mm PCB footprint; Ro HS
- Fully-pliant with IEEE 802.3-AT plaint
Types I and II
- Extended temperature operating range (- 40 to +85 °C)
Applications
- Power over Ethernet Endpoint
- Industrial automation systems switches and Midspans
- Networked audio
- Supports high-power PDs, such as:
- IP Phone Systems and i PBXs
- Pan/Tilt/Zoom security cameras
- Wireless Access Points
- Security and RFID systems
Description
The Si3483 is a power manager intended for use with the Si3459 Power over Ethernet (Po E) controllers for power management of up to 64 ports with three power sources.
The Si3459 is capable of delivering over 30 W per port, which means that, in a 24or 48-port system, a very large power supply would have to be used to avoid overload. Typically, not all ports are used at full power; so, a smaller power supply can be used along with the Si3483 power management controller.
Use of the Si3483 power manager greatly simplifies system implementation of power management. The Si3483 power management controller is programmed via a SPI or UART interface to set the system power supply capacity, the port power configuration (Type 1: 15.4 W, or high-power Type 2: 30 W) ports, the port priority, the detection timing (Alternative A or Alternative B), and the fault recovery protocol. Once programmed, the configuration data can be saved, and the Si3483 can work without host intervention. Port and overall status information is available and...
