NCP1075A/B, NCP1076A/B, NCP1077A/B, NCP1079A/B Enhanced Off-line Switcher for Robust and Highly Efficient Power Supplies www.onsemi.com The NCP107xuz products integrate a fixed frequency current mode controller with a 700 V MOSFET. Available in a two different pinout of the very common PDIP7 package, the NCP107xuz offers a high MARKING DIAGRAMS level of integration, including softstart, frequencyjittering, shortcircuit protection, skipcycle, a maximum peak current setpoint, ramp compensation, and a dynamic selfsupply (DSS, P107xPuzy PDIP7 eliminating the need for an auxiliary winding). AWL (PDIP8 LESS PIN 6) Unlike other monolithic solutions, the NCP107xuz is quiet by YYWWG CASE 626A nature: during nominal load operation, the part switches at one of the available frequencies (65, 100 or 130 kHz). When the output power demand diminishes, the IC automatically enters frequency foldback mode and provides excellent efficiency at light loads. When the power P107xPuzy demand reduces further, it enters into a skip mode to reduce the AWL PDIP7 YYWWG standby consumption down to a no load condition. (PDIP8 LESS PIN 3) Protection features include: a timer to detect an overload or a CASE 626AS shortcircuit event, Overvoltage Protection with autorecovery. Ac x = Power Version (5, 6, 7, 9) input line voltage detection prevents lethal runaway in low input u = Pin Connections (A, B) voltage conditions (Brownout) as well as too high an input line (Ac z = 2nd level OCP enabled/disabled (A, B) line Overvoltage Protection). This also allows an Overpower y = Oscillator Frequency 65, 100, 130 (A, B, C) A = Assembly Location Protection to compensate all internal delays in high input voltage WL = Wafer Lot conditions and optimize the maximum output current capability. Y, YY = Year For improved standby performance, the connection of an auxiliary W, WW = Work Week winding stops the DSS operation and helps to reduce input power G = PbFree Package consumption below 50 mW at high line. ORDERING INFORMATION See detailed ordering and shipping information on page 31 of this data sheet. Features Builtin 700 V MOSFET with R of 13.5 DS(ON) Adjustable Brownout Protection and OVP (NCP1075uz), 4.8 (NCP1076uz/77uz) and 2.9 nd 2 Leading Edge Blanking Current Protection (NCP1079uz) (NCP107xuA version only) Large Creepage Distance Between High Voltage Pins Over Power Protection Currentmode Fixed Frequency Operation Frequency Jittering for Better EMI Signature 65 / 100 / 130 kHz No Load Input Consumption < 50 mW Various Options for Maximum Peak Current: see below Frequency Foldback to Improve Efficiency at Light table Load Fixed Slope Compensation These are Pbfree Devices Skipcycle Operation at Low Peak Currents Only Dynamic Selfsupply: No Need for an Auxiliary Typical Applications Winding Auxiliary / Standby Isolated Power Supplies Internal 10 ms Softstart Major Home Appliances Power Supplies Autorecovery Output Shortcircuit Protection with Power Meter SMPS Timerbased Detection Wide Input Industrial SMPS Autorecovery Overvoltage Protection with Auxiliary Winding Operation Semiconductor Components Industries, LLC, 2017 1 Publication Order Number: September, 2018 Rev. 3 NCP1076A/DNCP1075A/B, NCP1076A/B, NCP1077A/B, NCP1079A/B PIN CONNECTIONS VCC GND FB BO/AC OVP BO/AC OVP GND VCC GND GND GND FB DRAIN GND DRAIN (Top View) (Top View) PDIP7 PDIP7 NCP107xB NCP107xA PIN FUNCTION DESCRIPTION Pin No PDIP 7 A PDIP 7 B Pin Name Function Pin Description 1 2 VCC IC supply pin This pin is connected to an external capacitor. The V management includes an autorecov- CC ery overvoltage protection. 2 8 BO/AC OVP Brownout / Ac Line Detects both input voltage conditions (Brown Overvoltage protection out) and too high an input voltage (Ac line OVP). Do not leave this pin floating if this pin is not used it should be directly connected do GND. 3 5 GND The IC Ground 4 1 FB Feedback signal input By connecting an optocoupler to this pin, the peak current setpoint is adjusted accordingly to the output power demand. 5 4 DRAIN Drain connection The internal drain MOSFET connection 6 3 NC This unconnected pin ensures adequate creep- age distance 7 6 GND The IC Ground 8 7 GND The IC Ground PRODUCTS INFOS & INDICATIVE MAXIMUM OUTPUT POWER 230 Vrms 15% 85265 Vrms Adapter Open Frame Adapter Open Frame Product R I DS(ON) PK NCP1075uz 400 mA 8.5 W 14 W 6 W 10 W 13.5 NCP1076uz / NCP1077uz 4.8 800 mA 19 W 31 W 14 W 23 W NCP1079uz 2.9 1050 mA 25 W 41 W 18 W 30 W NOTE: Informative values only, with T = 25C, T = 100C, PDIP7 package, Selfsupply via Auxiliary winding and circuit mounted amb case on minimum copper area as recommended. QUICK SELECTION TABLE Device Frequency kHz R I mA Package type DS(ON) PK NCP1075uz 65, 100, 130* 13.5 400 NCP1076uz 65, 100, 130* 4.8 650 PDIP7 (PbFree) NCP1077uz 65, 100, 130* 4.8 800 NCP1079uz 65, 100, 130* 2.9 1050 *NOTE: 130 kHz option available in pin connection B only www.onsemi.com 2