NCP1080DER2G ON Semiconductor, NCP1080DER2G Datasheet
NCP1080DER2G
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NCP1080DER2G Summary of contents
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... NCP1080 Integrated PoE-PD & DC-DC Converter Controller Introduction 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− ...
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... Ordering Information Part Number NCP1080DEG NCP1080DER2G †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 CLASSIFICATION CLASS UVLO UVLO INRUSH INRUSH ILIM1 ILIM1 VPORTN1,2 PIN DIAGRAM ...
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RJ− 45 Data Pairs DB1 DB2 Spare Pairs 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 ...
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RJ− 45 Data Pairs DB1 DB2 Spare Pairs Figure 4. Non−Isolated Fly−back with Extra Winding Figure 4 shows the same non−isolated fly−back configuration as Figure 3, but adds auxiliary bias winding on the transformer to provide power ...
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Table 1. Pin Descriptions Name Pin No. Type VPORTP 1 Supply VPORTN1 6,8 Ground VPORTN2 RTN 7 Ground ARTN 14 Ground VDDH 16 Supply VDDL 17 Supply CLASS 2 Input INRUSH 4 Input ILIM1 5 Input UVLO 3 Input GATE ...
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Table 2. Absolute Maximum Ratings Symbol Parameter VPORTP Input power supply RTN Analog ground supply 2 ARTN VDDH Internal regulator output VDDL Internal regulator output CLASS Analog output INRUSH Analog output ILIM1 Analog output UVLO Analog input OSC Analog output ...
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Recommended Operating Conditions Operating conditions define the limits for functional operation and parametric characteristics of the device. Note that the functionality of the device outside the operating conditions described in this section is not warranted. Operating outside the recommended operating ...
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Table 3. Operating Conditions Symbol Parameter PASS−SWITCH AND CURRENT LIMITS Ron Pass−switch Rds−on I_Rinrush1 Rinrush = 150 kW (Note 7) I_Rinrush2 Rinrush = 57.6 kW (Note 7) I_Rilim1 Rilim1 = 84.5 kW (Note 7) INRUSH AND ILIM1 CURRENT LIMIT TRANSITION ...
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Table 3. Operating Conditions Symbol Parameter ERROR AMPLIFIER Vbg_fb Reference voltage Av_ol DC open loop gain GBW Error amplifier GBW SOFT−START Vss Soft−start voltage range Vss_r Soft−start low threshold (rising edge) Iss Soft−start source current CURRENT LIMIT COMPARATOR CSth CS ...
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Powered Device Interface The PD interface portion of the NCP1080 supports the IEEE802.3af defined operating modes: detection signature, current source classification, inrush and operating current limits. In order to give more flexibility to the user and also to keep control ...
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When using the external resistor divider, the NCP1080 has an external reference voltage hysteresis of 15 percent typical. Inrush and Operational Current Limitations The inrush current limit and the operational current limit are programmed individually by an external Rinrush and ...
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The DC−DC controller becomes operational as soon as RTN−VPORTN the Vds_pgood threshold. VDDL 1 COMP Current Slope Compensation 11 kW Blanking CS time VDDL Soft−start Internal VDDH and VDDL Regulators and Gate ...
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Current Limit Comparator The NCP1080 current limit block behind the CS pin senses the current flowing in the external MOSFET for current mode control and cycle−by−cycle current limit. This is performed by the current limit comparator which, on the CS ...
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... P P1 BOTTOM VIEW *For additional information on our Pb−Free strategy and soldering details, please download the ON Semiconductor Soldering and Mounting Techniques Reference Manual, SOLDERRM/D. The product described herein may be covered by one or more US patents pending. ON Semiconductor and are registered trademarks of Semiconductor Components Industries, LLC (SCILLC). SCILLC reserves the right to make changes without further notice to any products herein ...