DC1561B - Linear Technology

The pictures are for reference only, and the specific specifications can be found in the product manual.

Part No

DC1561B
Manufacturer

Linear Technology
ChipWorker Part#

CW83206692
Category

Microprocessor Development Kit
Description

LTC4278 Power Over Ethernet Controller 5VDC Output Demonstration Circuit
Documentation

Datasheet

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DC1561B Specifications

Attribute	Attribute Value

Part Number	DC1561B
Manufacturer	Linear Technology
ChipWorker Part#	CW83206692
Category	Microprocessor Development Kit
Documentation	Datasheet
Number of Outputs	1 Output
Output Current	4500 mA
Switching Frequency	250 kHz
Input Voltage	37VDC ~ 57VDC
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Product Lifecycle Status	Active
RoHS	RoHS Compliant
Lead-Free Status	Lead Free
REACH SVHC Compliance	No SVHC
REACH SVHC Compliance Edition	2015/12/17

Product Description

DC1561B is a demonstration circuit for LTC4278 integrated Powered Device controller and switching regulator intended for high power IEEE 802.3at and 802.3af applications. This board is a Type 2 (IEEE 802.3at) compliant, high power POE, PD. The DC1561B also features a wide auxiliary input voltage range of 9V to 57V. The board can connect to a Type 2 PSE device, such as the DC1567. The LTC4278 provides IEEE 802.3at standard (PoE+) PD interfacing and power supply control. When the PD fully powers, the PD interface passes power from the PSE to the switcher through an internal, low resistance, high power MOSFET. The highly integrated LTC4278 controls a high power, small power supply that utilizes a highly efficient isolated flyback topology with synchronous rectification. It outputs 5V at 4.5A. DC1561B also demonstrates the use of an auxiliary wall adapter for nominal 12VDC, 24VAC/24VDC, or 48VDC systems. When present, the auxiliary supply is the dominant supply over PoE to provide power.
Shutdown pin for flexible auxiliary power support
Integrated state of the art no opto synchronous flyback controller
Isolated power supply efficiency >92%
88% efficiency including diode bridge and hot swap FET
Superior EMI performance
Robust 100V 0.7ohm (Typ) integrated hot swap MOSFET
Integrated signature resistor and programmable class current
Undervoltage, overvoltage and thermal protection
Short circuit protection with auto restart
Complementary power good indicators

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