Skyworks Solutions Inc. Si3404 Power Over Ethernet (PoE) Device
Skyworks Solutions Inc. Si3404 Power Over Ethernet (PoE) Powered Device (PD) is a highly integrated, IEEE 802.3at Type 1-compliant, Pulse-Width-Modulated (PWM) Switching Regulator. Skyworks Si3404 integrates all power management and control functions required in a Power-over-Ethernet application. The Si3404 PD converts the high voltage supplied over a 10/100/1000BASE-T Ethernet connection to a regulated, low-voltage output supply. The optimized architecture of this device minimizes the solution footprint and external BOM (Bill of Materials) cost and enables the use of low-cost external components while maintaining high performance.
The Si3404 integrates a transient surge suppressor. The switching power FET and all associated functions are also integrated. The Si3404 supports Isolated Flyback, Non-Isolated Flyback, and Buck Converter Topologies. The switching frequency for the regulator is tunable with a simple external resistor value to help avoid unwanted harmonics for better emissions control.
The Si3404 PD fully supports the IEEE 802.3at specification for Type 1, single-event classification. Standard external resistors provide the proper IEEE 802.3 signatures for the detection function and programming of the classification mode. Internal startup circuits ensure well-controlled soft-start initial operation of both the hot swap switch and the voltage regulator.
The Si3404 PoE PD is offered in a low-profile, 20-pin, 4mm x 4mm QFN package, ideal for space-constrained applications.
Features
- Type 1 (PoE) power
- IEEE 802.3at Type 1 compliance
- Current mode DC-DC converter
- Tunable switching frequency
- Transformer bias winding support
- Auxiliary adapter support
- Integrated hot swap FET and switching FET
- 120V Absolute Max voltage performance
- Wide -40°C to +85°C temperature range
- Compact 4mm x 4mm QFN Package
- Pb-free; ROHS-compliant
Applications
- Voice over IP (VoIP) devices
- Wireless access points
- Security and surveillance IP cameras
- Point-of-sale terminals
- Internet appliances
- Network devices
Block Diagram
Development Tools
Skyworks Solutions Inc. Kits de evaluación de retorno aislado PoE PD Si3404
Ofrece un diseño de referencia para una fuente de alimentación en una aplicación PoE PD, basándose en el CI PoE Si3404.
Skyworks Solutions Inc. Kit de evaluación PoE PD de Clase 3 y 3,3 V Si3404FB3V3KIT
Ofrece un diseño de referencia para una fuente de alimentación en una aplicación PoE PD, basándose en el CI PoE Si3404.
Skyworks Solutions Inc. Kit de evaluación PoE PD de Clase 3 y 5 V Si3404FB5V3KIT
Ofrece un diseño de referencia para una fuente de alimentación en una aplicación PoE PD, basándose en el CI PoE Si3404.
Skyworks Solutions Inc. Kit de evaluación PoE PD de Clase 3 y 12 V SI3404FB12V3KIT
Ofrece un diseño de referencia para una fuente de alimentación en una aplicación PoE PD, basándose en el CI PoE Si3404.
Skyworks Solutions Inc. Si3406FBC3-KIT PoE Evaluation Kit
Class 3 Non-isolated Flyback Topology Evaluation Board based on the Si3406 PoE+ Powered Device.
Skyworks Solutions Inc. Si34061 5V Class 4 Evaluation Kit
Demonstrates a complete IEEE 802.3at Power over Ethernet Powered Device system using the Si34061.
Skyworks Solutions Inc. Si3406FBC2-KIT PoE Evaluation Kit
Non-isolated Flyback Topology, Class 2 Evaluation Board based on the Si3406 PoE+ Device.
Associated Products
Skyworks Solutions Inc. Si3406 Power Over Ethernet Plus (PoE+) Device
Highly-integrated devices offering complete Type 1 PoE or Type 2 PoE+ power solutions.