Analog Devices LTC4291 | Demoboard DC2685A

Beschreibung

Demonstration circuit DC2685A is a 4-port IEEE 802.3bt power sourcing equipment (PSE) composed of a DC2684A (daughter card) and DC2683A (motherboard). The DC2685A (kit) is used for evaluation of the LTC4292/LTC4291 PSE chipset. Up to four IEEE 802.3af, IEEE 802.3at, or IEEE 802.3bt powered devices (PDs) can be connected and powered from this system using a single power supply. A DC590 is connected to the DC2685A for I2C interfacing with QuikEval™.This demonstration manual provides a quick start procedure, a DC2684A daughter card overview, a DC2683A mother board overview, schematics, and layout printouts.

Eigenschaften

• Four PSE Ports
• Two Power Channels per Port
• Fully Compliant IEEE 802.3bt Type 3 and 4 PSE
• Compliant Support for Type 1, 2, 3, and 4 PDs
• Low Power Path Dissipation per Channel
• 150mΩ Sense Resistance
• 30mΩ or Lower MOSFET RDS(ON)
• Chipset Provides Electrical Isolation
• Eliminates Optos and Isolated 3.3V Supply
• Very High Reliability Multipoint PD Detection
• Connection Check Distinguishes Single-Signature and Dual-Signature PDs
• Continuous, Dedicated Per-Port Power and Current Monitoring
• Per-Port Power Policing
• 1MHz I2C Compatible Serial Control Interface
• Pin or I2C Programmable PD Power Up to 71.3W
• Available in a 40-Lead 6mm × 6mm (LTC4292) and 24-Lead 4mm × 4mm (LTC4291-1) QFN Packages

Typische Anwendungen

• PoE PSE Switches/Routers / PoE PSE Midspans

Weiterführende Informationen

• Datenblatt
• Produktseite des IC-Herstellers