Product Overview NCP1070: High-Voltage Switcher Regulator for Low Power Offline SMPS For complete documentation, see the data sheet Product Description The NCP1070 / NCP1071 integrate a fixed frequency current mode controller with a 700 V MOSFET. Available in a PDIP-7 or SOT223 package, the NCP1070 /NCP1071 offers a high level of integration, including soft-start, frequency-jittering, short-circuit protection, skip-cycle, a maximum peak current set point, ramp compensation, and a Dynamic Self-Supply (eliminating the need for an auxiliary winding). Unlike other monolithic solutions, the NCP1070 is quiet by 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 demand reduces further, it enters into a skip mode to reduce the standby consumption down to a no load condition. Protection features include: a timer to detect an overload or a short-circuit event, Overvoltage Protection with auto-recovery and AC input line voltage detection. For improved standby performance, the connection of an auxiliary winding stops the DSS operation and helps to reduce input power consumption below 50 mW at high line. NCP1070 = 250mA peak current limit NCP1071 = 350mA peak current limit Features • Integrated 700 V MOSFET with RDS(on) of 22 Ω • Current-Mode Fixed Frequency Operation (65/100/130 kHz) • Peak Current: NCP1070 = 250mA • Skip-Cycle Operation at Low Peak Current • Dynamic Self-Supply (DSS) • Auto-Recovery Output Short Circuit Protection with TimerBased Detection • Frequency Foldback Operation • 300µA No Load Power Consumption • Frequency Jittering (including during frequency foldback mode) • AC Input Voltage Line Detection For more features, see the data sheet Applications • • • • • Auxilary Standby Isolated Power Supplies White Goods Smart Meters E-Meter Benefits • Up to 20W output SMPS design capability • Ability to scale for efficiency or size • Adjust output current protection based on output power demand • Eliminate acoustic noise • Eliminate Aux winding • Provides more robust protection without worrying about the coupling of the aux winding • Improved efficiency at light load / Improved EMI over the entire load • <50mW no Load Power Consumption • Better EMI Signature Over the Entire Operating Range • Enhanced Protection Against Faults With Low Input Voltage End Products • • • • • Auxiliary Standby Isolated Power Supplies White Goods Smart Meter E-Meter Part Electrical Specifications Product Compliance Status Contr fsw fJitter ol Typ Typ Mode (kHz) (%) Stan RDS(O V(BR) DSS d-by N) Max Mode Typ (Ω) (V) IPeak (mA) HV DSS Start- (mA) up Min (V) UVL O Short Circu it Prote ction Over Brow Powe n-out r Com pens ation Latch Pack age Type NCP1070P065G Pb-free Active Curre 65 nt Mode 6 Yes 22 700 250 Yes 8 6.3 Yes No No No PDIP -7 Active Curre 100 nt Mode 6 Yes 22 700 250 Yes 8 6.3 Yes No No No PDIP -7 Active Curre 130 nt Mode 6 Yes 22 700 250 Yes 8 6.3 Yes No No No PDIP -7 Active Curre 65 nt Mode 6 Yes 22 700 250 Yes 8 6.3 Yes No No No SOT2234/ TO2614 Active Curre 100 nt Mode 6 Yes 22 700 250 Yes 8 6.3 Yes No No No SOT2234/ TO2614 Active Curre 130 nt Mode 6 Yes 22 700 250 Yes 8 6.3 Yes No No No SOT2234/ TO2614 Halide free NCP1070P100G Pb-free Halide free NCP1070P130G Pb-free Halide free NCP1070STAT3G Pb-free Halide free NCP1070STBT3G Pb-free Halide free NCP1070STCT3G Pb-free Halide free For more information please contact your local sales support at www.onsemi.com Created on: 6/30/2016