New Power over Ethernet ICs

Silicon Labs released two new Power over Ethernet (PoE) Powered Device (PD) families delivering best-in-class integration and efficiency for a wide range of Internet of Things (IoT) applications. Silicon Labs’ Si3406x and Si3404 families include all necessary high-voltage discrete components on a single PD chip. The new PD ICs support IEEE 802.3 at PoE+ power capabilities, flexible power conversion options exceeding 90 percent efficiency, robust sleep/wake/LED support modes and superior EMI immunity. These capabilities help developers reduce system cost and time to market for high-power, high-efficiency PoE PD applications.

Features:

Supports non-isolated and isolated switching topologies
Fully integrated high-voltage devices
Two complete diode bridges
Transient voltage suppressor
Switching regulator driver FET
Current-limited hot swap switch
Comprehensive protection circuitry
Transient over-voltage protection
Under voltage lockout
Thermal shutdown protection
Fold back current limiting
Low-EMI slew rate control
Secondary sync FET driver
Type 2 present indicator
Automatic maintain power signature (MPS) support
PWM switching frequency control
Sleep mode control
External hotswap and switching FET modes (Si34061)
Auxiliary adapter power sense (Si34061)
Advanced Sleep/Wake modes with LED (Si34062)
Transformer winding efficiency enhancer (Si34061, 62)


Si3406x Datasheet	Si3404 Datasheet

New Power over Ethernet ICs

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