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Numéro de sérieNCP1080
CategoriePower Management => DC-DC Converters
DescriptionIntegrated 13 W PoE-PD & DC-DC Converter Controller (IEEE 802.3af)
The NCP1080 is a member of ON Semiconductor\'s Power over Ethernet Powered Device (PoE-PD) product family and represents a robust, flexible and highly integrated solution targeting demanding Ethernet applications. It combines in a single unit an enhanced PoE-PD interface fully compliant with the IEEE 802.3af specification and a flexible and configurable DC-DC converter controller.
The NCP1080\'s exceptional capabilities offer new opportunities for the design of products powered directly over Ethernet lines, eliminating the need for local power adapters or power supplies and drastically reducing the overall installation and maintenance cost.
ON Semiconductor\'s unique manufacturing process and design enhancements allow the NCP1080 to deliver up to 13 W of regulated power to support PoE applications according to the IEEE 802.3af standard. This device leverages the significant cost advantages of PoE-enabled systems to a broad spectrum of products in markets such as VoIP phones, wireless LANs, security cameras, point of sales terminals, RFID readers, industrial Ethernet, etc.
SociétéON Semiconductor
DatasheetTélécharger NCP1080 datasheet
 
 
  • Description courte

  • The is a member of ON Semiconductor's Power over Ethernet Powered Device (PoE-PD) product family and represents a robust, flexible and highly integrated solution targeting demanding Ethernet applications. It combines in a single unit an enhanced PoE-PD interface fully supporting the IEEE802.3af specification and a flexible and configurable DC-DC converter controller. The NCP1080's exceptional capabilities offer new opportunities for the design of products powered directly over Ethernet lines, eliminating the need for local power adaptors or power supplies and drastically reducing the overall installation and maintenance cost. ON Semiconductor's unique manufacturing process and design enhancements allow the NCP1080 to deliver W of regulated power to support PoE applications according to the IEEE802.3af standard. This device leverages the significant cost advantages of PoE-enabled systems to a broad spectrum of products in markets such as VoIP phones, wireless LAN access point, security cameras, point of sales terminals, RFID readers, industrial ethernet devices, etc. The integrated current mode DC-DC controller facilitates 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 to 80 percent, slope compensation, and soft start-up. The NCP1080 is fabricated in a robust high voltage 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. The NCP1080 complements ON Semiconductor's ASSP portfolio in communications and industrial devices and can be combined with other high-voltage interfacing devices to offer complete solutions to the communication, industrial and security markets.

    NCP1080 = Specific Device Code XXXX = Date Code Y = Assembly Location ZZ = Traceability Code

    See detailed ordering and shipping information in the package dimensions section on page 2 of this data sheet.

    Fully supports IEEE802.3af standard Regulated power output 13 W Programmable classification current Adjustable under voltage lock out Programmable inrush current limit Programmable operational current limit 500 mA Over-temperature protection Industrial temperature range to 85°C with full operation to 150°C junction temperature· 0.6 ohm hot-swap pass-switch with low loss current sense technique

    robustness of discrete MOSFETs with integrated temperature control
    · Current mode control· Supports isolated and non-isolated DC-DC converter·

    applications Internal voltage regulators Wide duty cycle range with internal slope compensation circuitry Programmable oscillator frequency Programmable soft-start time

    VPORTP CLASS UVLO INRUSH ILIM1 VPORTN1 RTN SS FB COMP VDDL VDDH GATE ARTN NC CS OSC

    Part Number NCP1080DEG NCP1080DER2G Package TSSOP-20 EP (Pb-Free) TSSOP-20 EP (Pb-Free) Shipping Configuration 74 units / Tube 2500 / Tape & Reel Temperature Range to 85°C

    For information on tape and reel specifications, including part orientation and tape sizes, please refer to our Tape and Reel Packaging Specification Brochure, BRD8011/D. VPORTP DETECTION INTERNAL SUPPLY & BANDGAP

    OSC HOT SWAP SWITCH CONTROL & CURRENT LIMIT BLOCKS VDDH

    Figure 2 shows the integrated PoE-PD switch and DC-DC controller configured to work in a fully isolated application. The output voltage regulation is accomplished with an external opto-coupler and a shunt regulator (Z1).

    Figure 3 shows the integrated PoE-PD and DC-DC controller configured in a non-isolated fly-back configuration. A compensation network is inserted between the FB and the COMP pin for overall stability of the feedback loop.