ncp1083 ON Semiconductor, ncp1083 Datasheet

ncp1083

Manufacturer Part Number

ncp1083

Description

Integrated High Power Poe-pd Interface & Dc-dc Converter Controller With 9v Auxiliary Supply Support

Manufacturer

ON Semiconductor

Datasheet

1.NCP1083.pdf (17 pages)

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NCP1083

Integrated High Power

PoE-PD Interface & DC-DC

Converter Controller with

9 V Auxiliary Supply Support

Introduction

HIPOt Power over Ethernet Powered Device (PoE−PD) product

family and represents a robust, flexible and highly integrated solution

targeting demanding medium and high power Ethernet applications. It

combines in a single unit an enhanced PoE−PD interface supporting

the IEEE 802.3af and the upcoming draft IEEE 802.3at (D3.0)

standard and a flexible and configurable DC−DC converter controller.

smoothly transition from non−PoE to PoE enabled networks by also

supporting power from auxiliary sources such as AC power adapters

and battery supplies, eliminating the need for a second switching

power supply.

enhancements allow the NCP1083 to deliver up to 25.5 W for the draft

IEEE 802.3at (D3.0) standard and up to 40 W for proprietary high

power PoE applications. The NCP1083 enables the draft IEEE 802.3at

(D3.0) and implements a two event physical layer classification.

Additional proprietary classification procedures support high power

power sourcing equipment (PSE) on the market. The unique high

power features leverage the significant cost advantages of PoE−

enabled systems to a much broader spectrum of products in emerging

markets such as industrial ethernet devices, PTZ and Dome IP

cameras, RFID readers, MIMO WLAN access points, high−end VoIP

phones, notebooks, etc.

isolated and non−isolated fly−back, forward and buck

converter topologies. It has all the features necessary for a

flexible, robust and highly efficient design including

programmable switching frequency, duty cycle up to 80

percent, slope compensation, and soft start−up.

process and integrates a rugged vertical N−channel DMOS

with a low loss current sense technique suitable for the most

demanding environments and capable of withstanding harsh

environments such as hot swap and cable ESD events.

portfolio in industrial devices and can be combined with

stepper motor drivers, CAN bus drivers and other high−

voltage interfacing devices to offer complete solutions to the

industrial and security market.

Features

Powered Device Interface

•

November, 2008 − Rev. 0

The NCP1083 is a member of ON Semiconductor’s high power

The NCP1083’s exceptional capabilities enable applications to

ON Semiconductor’s unique manufacturing process and design

The integrated current mode DC−DC controller facilitates

The NCP1083 is fabricated in a robust high voltage

The NCP1083 complements ON Semiconductor’s ASSP

Flexible Auxiliary Power Supply Support

9 V Front, Rear and Direct Auxiliary Supply Connections

•

Supporting the IEEE 802.3af and the Upcoming Draft

IEEE 802.3at (D3.0) Standard

Supports Draft IEEE 802.3at (D3.0) Two Event Layer 1

Classification

High Power Layer 1 Classification Indicator

Extended Power Ranges up to 40 W

Programmable Classification Current

Adjustable Under Voltage Lock Out

Programmable Inrush Current Limit

Programmable Operational Current Limit up to

1100 mA for Extended Power Ranges

Over−temperature Protection

Industrial Temperature Range −40°C to 85°C with Full

Operation up to 150°C Junction Temperature

0.6 W Hot−Swap Pass−switch with Low Loss Current

Sense Technique

Vertical N−channel DMOS Pass−switch Offers the

Robustness of Discrete MOSFETs with Integrated

Temperature Control

See detailed ordering and shipping information in the package

dimensions section on page 2 of this data sheet.

NCP1083 = Specific Device Code

XXXX

ORDERING INFORMATION

http://onsemi.com

= Date Code

= Assembly Location

= Traceability Code

Publication Order Number:

TSSOP−20 EP

CASE 948AB

DE SUFFIX

NCP1083/D

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