The IEEE-required Powered Device (PD) detection feature uses a robust 3-point algorithm to avoid false detection events. The Si3460 controlers' reference design kit also provides full IEEE-compliant classification and PD disconnect. Intelligent protection circuitry includes input undervoltage lockout (UVLO), current limiting and output short-circuit protection.
The Si3460 is designed to operate completely independently of host processor control. An LED status signal is provided to indicate the port status including detect, power good and output fault event information for use within the host system. The Si3460 is pin-configurable to support endpoint and midspan applications, as well as all four classification power levels specified by the IEEE 802.3af standard, including Class 0 (15.4 W maximum power).
A comprehensive reference design kit is available (Si3460-EVB) includes a complete schematic and bill-of-materials (BOM) for the dc-dc controller and PSE functions.