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DESCRIPTION
Demonstration circuit 2685B-KIT is an Ethernet Alliance
Gen 2 PoE certified 4-port IEEE 802.3bt power sourcing
equipment (PSE) composed of a DC2684A-B (daugh-
ter card) and DC2683A (motherboard). The DC2685B-
KIT is used for evaluation of the
PSE chipset. Up to four IEEE 802.3af, IEEE 802.3at, or
IEEE 802.3bt powered devices (PDs) can be connected
BOARD PHOTO
Arrow.com.
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LTC
4291-1/LTC4292
®
DEMO MANUAL
DC2683A and DC2684A-B
LTC4291-1/LTC4292
4-Port IEEE 802.3bt PSE
and powered from this system using a single power sup-
ply. A DC590 is connected to the DC2685B-KITfor I
interfacing with QuikEval™.
This demonstration manual provides a quick start proce-
dure, a DC2684A-B daughter card overview, a DC2683A
mother board overview, schematics, and layout printouts.
Design files for this circuit board are available.
All registered trademarks and trademarks are the property of their respective owners.
DC2685B-KIT
2
C
Rev. B
1
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Summary of Contents for Linear Analog Devices ADI Power DC2685B-KIT
- Page 1 DEMO MANUAL DC2685B-KIT DC2683A and DC2684A-B LTC4291-1/LTC4292 4-Port IEEE 802.3bt PSE DESCRIPTION Demonstration circuit 2685B-KIT is an Ethernet Alliance and powered from this system using a single power sup- Gen 2 PoE certified 4-port IEEE 802.3bt power sourcing ply. A DC590 is connected to the DC2685B-KITfor I equipment (PSE) composed of a DC2684A-B (daugh- interfacing with QuikEval™.
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Page 2: Quick Start Procedure
DEMO MANUAL DC2685B-KIT QUICK START PROCEDURE Follow the quick start procedure below for basic operation sourcing the maximum delivered power for all four of the DC2685B-KIT. Refer to Figure 1 through Figure 3 ports set by JP3 and JP4 on the daughter card (or and Table 1 through Table 4 for proper equipment setup. - Page 3 DEMO MANUAL DC2685B-KIT QUICK START PROCEDURE Figure 1. DC2684A-B Jumpers: AUTO, 4PV#, PM0 and PM1 Figure 2. Inserting the DC2684A-B Daughter Card Into J7 of the DC2683A Motherboard Rev. B Arrow.com. Arrow.com. Arrow.com. Downloaded from Downloaded from Downloaded from...
- Page 4 DEMO MANUAL DC2685B-KIT QUICK START PROCEDURE Table 1. DC2684A-B AUTO and 4PV# Jumper Settings Table 3. DC2685B-KIT Power Supply Voltage Range per PSE Type JUMPER SETTING OPERATION IEEE TYPE Supply Voltage Range AUTO (JP1) Host Control Required Type 3 51V to 57V Autonomous Type 4 53V to 57V...
- Page 5 DEMO MANUAL DC2685B-KIT DEMONSTRATION CIRCUIT 2684A-B DAUGHTER CARD Demonstration circuit 2684A-B is an IEEE 802.3bt 8-chan- LTC4292 data sheet. The DC2684A-B demonstrates nel PSE daughter card that features the LTC4291-1/ proper LTC4291-1/LTC4292 board layout on a compact LTC4292 chipset. This daughter card mates with a 4-Port, daughter card approximately the height and width of a 2 4-Pair PoE motherboard for use in IEEE 802.3bt Type 3 or ×...
- Page 6 DEMO MANUAL DC2685B-KIT DEMONSTRATION CIRCUIT 2684A-B DAUGHTER CARD I/O LED Indicators The DC2684A-B features two LEDs to indicate the states SDAOUT SDAOUT of the LTC4291-1/LTC4292 general purpose input/output SDAIN SDAIN pins GP0 and GP1. These pins are configured as inputs or outputs via I C.
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Page 7: Demonstration Circuit 2683A Mother Board
DEMO MANUAL DC2685B-KIT DEMONSTRATION CIRCUIT 2683A MOTHER BOARD capacitance components; these components must be Each pairset channel (2 per port) has a respective OUTnM sized to the final system requirements. LED to indicate if the channel is powered on with PoE. Demonstration circuit 2683A is a 4-Port, 2-channels per The INT LED (D6) indicates if the interrupt line is pulled port IEEE 802.3bt PoE PSE motherboard. - Page 8 DEMO MANUAL DC2685B-KIT SUPPLEMENTARY Table 5. DC590 Jumper Selection. Refer to the DC590 Demo Manual for Further Details. JUMPER SETTING OPERATION PROG Microcontroller in-circuit programming header. Do NOT install jumper; make no connections. MODE Do NOT install jumper; make no connections. Watchdog Enables Do NOT install jumper;...
- Page 9 DEMO MANUAL DC2685B-KIT DC2684A-B DAUGHTER CARD LAYOUT FILES Figure 7. DC2684A-B Top Silkscreen Figure 8. DC2684A-B Top Layer Rev. B Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com. Downloaded from Downloaded from Downloaded from Downloaded from Downloaded from Downloaded from Downloaded from Downloaded from Downloaded from...
- Page 10 DEMO MANUAL DC2685B-KIT DC2684A-B DAUGHTER CARD LAYOUT FILES Figure 9. DC2684A-B Inner Layer 2 Figure 10. DC2684A-B Inner Layer 3 Rev. B Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com. Downloaded from Downloaded from Downloaded from Downloaded from Downloaded from Downloaded from Downloaded from Downloaded from...
- Page 11 DEMO MANUAL DC2685B-KIT DC2684A-B DAUGHTER CARD LAYOUT FILES Figure 11. DC2684A-B Bottom Layer Figure 12. DC2684A-B Bottom Silkscreen Rev. B Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com. Downloaded from Downloaded from Downloaded from Downloaded from Downloaded from Downloaded from Downloaded from Downloaded from Downloaded from...
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Page 12: Dc2683A Mother Board Layout Files
DEMO MANUAL DC2685B-KIT DC2683A MOTHER BOARD LAYOUT FILES Figure 13. DC2683A Top Silkscreen Rev. B Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com. Downloaded from Downloaded from Downloaded from Downloaded from Downloaded from Downloaded from Downloaded from Downloaded from Downloaded from Downloaded from... - Page 13 DEMO MANUAL DC2685B-KIT DC2683A MOTHER BOARD LAYOUT FILES Figure 14. DC2683A Top Layer Rev. B Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com. Downloaded from Downloaded from Downloaded from Downloaded from Downloaded from Downloaded from Downloaded from Downloaded from Downloaded from Downloaded from...
- Page 14 DEMO MANUAL DC2685B-KIT DC2683A MOTHER BOARD LAYOUT FILES Figure 15. DC2683A Inner Layer 2 Rev. B Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com. Downloaded from Downloaded from Downloaded from Downloaded from Downloaded from Downloaded from Downloaded from Downloaded from Downloaded from...
- Page 15 DEMO MANUAL DC2685B-KIT DC2683A MOTHER BOARD LAYOUT FILES Figure 16. DC2683A Inner Layer 3 Rev. B Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com. Downloaded from Downloaded from Downloaded from Downloaded from Downloaded from Downloaded from Downloaded from Downloaded from...
- Page 16 DEMO MANUAL DC2685B-KIT DC2683A MOTHER BOARD LAYOUT FILES Figure 17. DC2683A Bottom Layer Rev. B Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com. Downloaded from Downloaded from Downloaded from Downloaded from Downloaded from Downloaded from Downloaded from Downloaded from...
- Page 17 DEMO MANUAL DC2685B-KIT DC2683A MOTHER BOARD LAYOUT FILES Figure 18. DC2683A Bottom Silkscreen Rev. B Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com. Downloaded from Downloaded from Downloaded from Downloaded from Downloaded from Downloaded from Downloaded from Downloaded from...
- Page 18 DEMO MANUAL DC2685B-KIT DC2684A-B DAUGHTER CARD SCHEMATIC Rev. B Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com. Downloaded from Downloaded from Downloaded from Downloaded from Downloaded from Downloaded from Downloaded from Downloaded from Downloaded from Downloaded from...
- Page 19 DEMO MANUAL DC2685B-KIT DC2684A-B DAUGHTER CARD SCHEMATIC Rev. B Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com. Downloaded from Downloaded from Downloaded from Downloaded from Downloaded from Downloaded from Downloaded from Downloaded from Downloaded from...
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Page 20: Dc2683A Motherboard Schematic
DEMO MANUAL DC2685B-KIT DC2683A MOTHERBOARD SCHEMATIC Rev. B Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com. Downloaded from Downloaded from Downloaded from Downloaded from Downloaded from Downloaded from Downloaded from Downloaded from Downloaded from... - Page 21 DEMO MANUAL DC2685B-KIT DC2683A MOTHERBOARD SCHEMATIC Rev. B Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other rights of third parties that may result from its use. Specifications subject to change without notice.
- Page 22 DEMO MANUAL DC2685B-KIT ESD Caution ESD (electrostatic discharge) sensitive device. Charged devices and circuit boards can discharge without detection. Although this product features patented or proprietary protection circuitry, damage may occur on devices subjected to high energy ESD. Therefore, proper ESD precautions should be taken to avoid performance degradation or loss of functionality. Legal Terms and Conditions By using the evaluation board discussed herein (together with any tools, components documentation or support materials, the “Evaluation Board”), you are agreeing to be bound by the terms and conditions set forth below (“Agreement”) unless you have purchased the Evaluation Board, in which case the Analog Devices Standard Terms and Conditions of Sale shall govern.