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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

Block Diagram - Skyworks Solutions Inc. Si3402 PoE PD Interface Devices

Evaluation Boards

Skyworks Solutions Inc. Si3402 Evaluation Boards

Are a reference design for Power over Ethernet (PoE) Powered Device (PD) applications.

Learn Moreacerca de Skyworks Solutions Inc. Si3402 Evaluation Boards View Productsrelacionado con Skyworks Solutions Inc. Si3402 Evaluation Boards
View Results ( 4 ) Page
Número de referencia Hoja de datos Descripción Corriente de suministro operativa
SI3402-B-GM SI3402-B-GM Hoja de datos Circuitos integrados de interruptor de alimentación - POE / LAN IEEE 802.3af Type 1 PD interface with dc-dc converter 3.1 mA
SI3402-B-GMR SI3402-B-GMR Hoja de datos Circuitos integrados de interruptor de alimentación - POE / LAN IEEE 802.3af Type 1 PD interface with dc-dc converter 2 mA
SI3402-C-GM SI3402-C-GM Hoja de datos Circuitos integrados de interruptor de alimentación - POE / LAN 2 mA
SI3402-C-GMR SI3402-C-GMR Hoja de datos Circuitos integrados de interruptor de alimentación - POE / LAN 2 mA
Publicado: 2023-11-14 | Actualizado: 2023-12-04