Skyworks Solutions Inc. Si3402 PoE PD Interface Devices
Skyworks Solutions Inc. Si3402 PoE PD Interface Devices simplify Power-over-Ethernet (PoE) applications by integrating essential power management functions. The Skyworks Solutions Inc. Si3402 efficiently converts high voltage from the Ethernet connection to a regulated low-voltage output, minimizing space, cutting costs, and supporting isolated and non-isolated converter topologies. Integrated diode bridges and surge suppressors enable direct connection to the Ethernet RJ-45 connector. The Si3402 supports IEEE 802.3 Type 1 (Class 3 and below) Powered Device applications, with easy detection and power class programming through external resistors.
Its 20-pin, 5mm x 5mm QFN package offers a compact solution, and the Si3402-C is a pin-compatible replacement for Si3402-A, requiring minimal changes in PCB layouts. Notably, Si3402-C parallels Si3402-B functionality but eliminates the need for specific connections when bypassing the integrated diode bridge with external Schottky diodes. Additionally, PLOSS functionality is absent in Si3402-C.
Features
- Pin-compatible replacement for the obsolete Si3402-A
- IEEE 802.3 standard-compliant solution, including pre-standard (legacy) PoE support
- Highly-integrated IC enables compact solution footprints
- Minimal external components
- Integrated diode bridges and transient surge suppressor
- Integrated switching regulator controller with on-chip power FET
- Integrated dual current-limited hot-swap switch
- Programmable classification circuit
- Incorporates switcher EMIreduction techniques
- Supports non-isolated and isolated switching topologies
- Comprehensive protection circuitry
- Transient overvoltage protection
- Undervoltage lockout
- Thermal shutdown protection
- Foldback current limiting
- Allows external Schottky diode bypass of integrated diode bridges without requiring CT/SP pin connection
- Low-profile 5mm x 5mm 20-pin QFN
- RoHS-compliant
Applications
- Voice over IP telephones and adapters
- Wireless access points
- Security cameras
- Point-of-sale terminals
- Internet appliances
- Network devices
- High power applications
Functional Block Diagram
Evaluation Boards
Skyworks Solutions Inc. Si3402 Evaluation Boards
Are a reference design for Power over Ethernet (PoE) Powered Device (PD) applications.
View Results ( 4 ) Page
| Teilnummer | Datenblatt | Beschreibung | Betriebsversorgungsstrom |
|---|---|---|---|
| SI3402-B-GM |  |
Leistungsschalter IC - POE / LAN IEEE 802.3af Type 1 PD interface with dc-dc converter | 3.1 mA |
| SI3402-B-GMR | |
Leistungsschalter IC - POE / LAN IEEE 802.3af Type 1 PD interface with dc-dc converter | 2 mA |
| SI3402-C-GM | |
Leistungsschalter IC - POE / LAN | 2 mA |
| SI3402-C-GMR | |
Leistungsschalter IC - POE / LAN | 2 mA |
Veröffentlichungsdatum: 2023-11-14
| Aktualisiert: 2023-12-04