Si3406-GM

Si3406-GM Class 3 15W Power Over Ethernet (PoE) PD Interface Devices


The Si3406-GM is the industry’s most highly-integrated, IEEE 802.3 at Type 1-compliant, PoE PD interface and pulse-width-modulated (PWM) switching regulator. By setting a new bar for device integration, lowest overall BOM cost, efficiency and reliability, the Si3406-GM enables designers to easily add PoE functionality to their Ethernet products. When included in the design of a PoE-enabled system, such as a wireless access point or VoIP phone, the Si3406-GM converts the high voltage (typically ±48 V) supplied over Ethernet copper UTP cabling into a regulated, low-voltage dc supply. In addition, the Si3406-GM combines all the required IEEE 802.3 at Type 1 detection, classification and hot swap interfaces with a complete, high efficiency, PWM switching regulator. 

Specifications

Synchronous FET Drivertrue
Sleep ModeBasic
Temperature Range Min (°C)-40
Aux Adapter Supportfalse
Maximum Output Power (W)15
Package TypeQFN20
OPNSi3406-A-GM
Switching Frequency Range (kHz)100
Transformer Bias Winding Inputfalse
Switching Frequency Max (kHz)500
Package Size (mm)5x5
Description802.3at PoE PD Interface with dc-dc
IEEE Specification802.3 at Type 2
Efficiency (%)83
Temperature Range Max (°C)85
Auto MPS Supporttrue
DC DCtrue

Product Documents

Quality and Packaging

Look up product's green / pb-free status and information on RoHS, REACH, Halogen Free, and PFIS.

Certificate of Performance

Evaluation Kits

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si3406b5v2kit

Si3406 Compact, 5 V Buck Class 2 Powered Device Evaluation Kit

The Si3406 Compact 5V Buck Class 2 Evaluation Kit demonstrates a complete IEEE 802.3at Power over Ethernet PD system using Si3406 PoE PD device. The Si3406’s internal diode bridges, FETs, PoE interface, and dc-dc controller offer a complete PoE solution while using minimal PCB space.

MSRP $69.00

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Si3406FB3V2KIT

Si3406 Isolated 7 W, 3.3V Class 2 Evaluation Kit

The Si3406 3.3 V Class 2 evaluation kit demonstrates a complete isolated 7 W Power over Ethernet PD system using our Si3406 PoE PD device. A single Si3406 manages the PoE interface and dc-dc conversion. The Si3406 PD integrates an internal rectifier bridge, detection circuit, classification circuit, dc/dc switch, hotswap switch, TVS overvoltage protection, dynamic soft-start circuit, cycle-by-cycle current limit, thermal shutdown, optional synchronous secondary rectification driver, automatic and user-mode MPS functionality, and inrush current protection. The isolated flyback converter outputs up to 1.45 A for a total power of 7 W while using a standard, off-the-shelf transformer. The Sifos IEEE compliance report, schematics, and layout, are all found in the User’s Guide.

MSRP $99.00

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Si3406FB5V2KIT

Si3406 Isolated 7 W, 5V Class 2 Evaluation Kit

The Si3406 5 V Class 2 evaluation kit demonstrates a complete isolated 7 W Power over Ethernet PD system using our Si3406 PoE PD device. A single Si3406 manages the PoE interface and dc-dc conversion. The Si3406 PD integrates an internal rectifier bridge, detection circuit, classification circuit, dc/dc switch, hotswap switch, TVS overvoltage protection, dynamic soft-start circuit, cycle-by-cycle current limit, thermal shutdown, optional synchronous secondary rectification driver, automatic and user-mode MPS functionality, and inrush current protection. The isolated flyback converter outputs up to 1.05 A for a total power of 7 W while using a standard, off-the-shelf transformer. The Sifos IEEE compliance report, schematics, and layout, are all found in the User’s Guide.

MSRP $99.00

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Si3406FB12V2KIT

Si3406 Isolated 7 W, 12V Class 2 Evaluation Kit

The Si3406 12 V Class 2 evaluation kit demonstrates a complete isolated 7 W Power over Ethernet PD system using our Si3406 PoE PD device. A single Si3406 manages the PoE interface and dc-dc conversion. The Si3406 PD integrates an internal rectifier bridge, detection circuit, classification circuit, dc/dc switch, hotswap switch, TVS overvoltage protection, dynamic soft-start circuit, cycle-by-cycle current limit, thermal shutdown, optional synchronous secondary rectification driver, automatic and user-mode MPS functionality, and inrush current protection. The isolated flyback converter outputs up to 0.45 A for a total power of 7 W while using a standard, off-the-shelf transformer. The Sifos IEEE compliance report, schematics, and layout, are all found in the User’s Guide.

MSRP $99.00