Si3404-GM

Si3404-GM Class 3 15W Power Over Ethernet (PoE) PD Interface Devices

The Si3404-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 Si3404-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 Si3404-GM converts the high voltage (typically ±48 V) supplied over Ethernet copper UTP cabling into a regulated, low-voltage dc supply. In addition, the Si3404-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. 

Data Sheets Eval Kit
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QFN 20
QFN 20

Specifications

Synchronous FET Driverfalse
Sleep Mode–
Temperature Range Min (°C)-40
Aux Adapter Supportfalse
Maximum Output Power (W)15
Package TypeQFN20
OPNSi3404-A-GM
Switching Frequency Range (kHz)100
Transformer Bias Winding Inputtrue
Switching Frequency Max (kHz)500
Package Size (mm)4x4
Description802.3af PoE PD Interface with dc-dc
IEEE Specification802.3at Type 1
Efficiency (%)80
Temperature Range Max (°C)85
Auto MPS Supportfalse
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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si3404b12v3kit

Si3404 12V Buck Class 3 Powered Device Evaluation Kit

The Si3404 12V Class 3 Evaluation Kit demonstrates a complete IEEE 802.3at Power over Ethernet PD system using Si3404 PoE PD device. A single Si3404 manages the PoE interface and dc-dc conversion.

MSRP $40.00

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si3404b24v3kit

Si3404 24V Buck Class 3 Powered Device Evaluation Kit

The Si34061 5V Class 4 Evaluation Kit demonstrates a complete IEEE 802.3at Power over Ethernet PD system using Si34061 PoE PD device. A single Si34061 manages the PoE interface and dc-dc conversion.

MSRP $40.00

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si3404b5v2kit

Si3404 5V Buck Class 2 Powered Device Evaluation Kit

The Si3404 5V Class 2 Evaluation Kit demonstrates a complete IEEE 802.3at Power over Ethernet PD system using Si3404 PoE PD device. A single Si3404 manages the PoE interface and dc-dc conversion.

MSRP $40.00

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si3404b3v2kit

Si3404 3.3V Buck Class 2 Powered Device Evaluation Kit

The Si3404 3.3V Class 2 Evaluation Kit demonstrates a complete IEEE 802.3at Power over Ethernet PD system using Si3404 PoE PD device. A single Si3404 manages the PoE interface and dc-dc conversion.

MSRP $40.00

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si3404fb12v3kit

Si3404 Isolated 15 W, 12 V Class 3 Evaluation Kit

The Si3404 12 V Class 3 evaluation kit demonstrates a complete isolated 15 W Power over Ethernet PD system using our Si3404 PoE PD device. A single Si3404 manages the PoE interface and dc-dc conversion. The isolated flyback converter outputs up to 1 A for a total power of 15 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 $75.00

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si3404fb3v3kit

Si3404 Isolated 15 W, 3.3 V Class 3 Evaluation Kit

The Si3404 3.3 V Class 3 evaluation kit demonstrates a complete isolated 15 W Power over Ethernet PD system using our Si3404 PoE PD device. A single Si3404 manages the PoE interface and dc-dc conversion. The isolated flyback converter outputs up to 3.5 A for a total power of 15 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 $75.00

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si3404fb5v3kit

Si3404 Isolated 15 W, 5 V Class 3 Evaluation Kit

The Si3404 5 V Class 3 evaluation kit demonstrates a complete isolated 15 W Power over Ethernet PD system using our Si3404 PoE PD device. A single Si3404 manages the PoE interface and dc-dc conversion. The isolated flyback converter outputs up to 2.5 A for a total power of 15 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 $75.00

Buy Now Learn More