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Analog Devices LTC4292 | Demoboard DC2685B
DC2683A and DC2684A-B LTC4291-1/LTC4292 4-Port IEEE 802.3bt PSE
Overview
| Topology | Other Topology |
| Input voltage | 51-57 V |
| IC revision | A |
Description
Demonstration circuit 2685B is a 4-port IEEE 802.3bt power sourcing equipment (PSE) composed of a DC2684A-B (daughter card) and DC2683A (motherboard). The DC2685B (kit) is used for evaluation of the LTC4291-1/LTC4292 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 DC2685B for I2C interfacing with QuikEval™.This demonstration manual provides a quick start procedure, a DC2684A-B daughter card overview, a DC2683A mother board overview, schematics, and layout printouts.
Features
- 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
Typical applications
- PoE PSE Switches/Routers / PoE PSE Midspans
More information
Products
Order Code | Datasheet | Simulation | Downloads | Status | Product series | f(mm) | Pins | Type | Mount | IR(mA) | Working Voltage(V (AC)) | Operating Temperature | Poles | L(mm) | Vaporphase process | H(mm) | Operation Force(g) | Electrical Life(Cycles) | Actuator Color | Washable | Samples | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 | WS-DITV Compact THT with Raised Actuator 2.54 mm, –, 2 | Simulation– | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWS-DITV Compact THT with Raised Actuator 2.54 mm | – | Pins2 | – | – | – | – | Operating Temperature -40 °C up to +85 °C | Poles2 | Length6.08 mm | Vaporphase processnot specified | – | Operation Force800 g | Electrical Life2000 Cycles | Actuator ColorWhite | – | |||
 | WS-TASV J-Bend SMT Tact Switch 6.0x3.5 mm, –, – | Simulation– | Downloads6 files | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWS-TASV J-Bend SMT Tact Switch 6.0x3.5 mm | – | – | – | – | Rated Current50 mA | – | Operating Temperature -40 °C up to +85 °C | – | – | Vaporphase processnot specified | Height5 mm | Operation Force160 g | Electrical Life50000 Cycles | Actuator ColorBlack | WashableNo | ||
 | WA-SNSR Self-Retaining Spacer, 4.8 mm, – | Simulation– | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWA-SNSR Self-Retaining Spacer | Drilling in Panel4.8 mm | – | – | – | – | – | Operating Temperature -30 °C up to +85 °C | – | Length19.1 mm | – | – | – | – | – | – | |||
749022016 | 10/100/1000 Base-T SMT Transformer, –, 24 | Downloads– | Status Activei| Production is active. Expected lifetime: >10 years. | Product series 10/100/1000 Base-T SMT Transformer | – | Pins24 | – | MountSMT | – | – | Operating Temperature 0 °C up to +70 °C | – | Length18.16 mm | – | Height10.16 mm | – | – | – | – | |||
 | WR-PHD Pin Header, –, 3 | Simulation– | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWR-PHD Pin Header | – | Pins3 | TypeStraight | MountTHT | Rated Current2000 mA | Working Voltage200 V (AC) | Operating Temperature -40 °C up to +105 °C | – | Length6 mm | – | – | – | – | – | – |