ON Semiconductor NCP1027 handbook
Update: 29 September, 2023
The NCP1027 is a high-voltage switcher designed for medium power offline switch mode power supplies (SMPS) with low standby power. It utilizes proprietary high-voltage technology that allows for the integration of a power MOSFET and startup current source directly connected to the bulk capacitor. An adjustable brown-out circuitry prevents lethal runaway in low input voltage conditions until a sufficient input level is reached. Current-mode operation and adjustable ramp compensation provide superior performance in universal mains applications. Additionally, an Over Power Protection pin enables precise compensation of internal delays in high input voltage conditions and optimization of the maximum output current capability. Protection features include a timer that detects overload or short-circuit conditions and stops all operations, ensuring safe auto-recovery with low duty cycle burst operation. An integrated auto-recovery Overvoltage Protection monitors the VCC level and temporarily shuts down driving pulses in case of unexpected feedback loop runaway. The circuit's excellent RDS(on) figure makes it an ideal choice for standby/auxiliary offline power supplies or applications requiring higher output power levels.
Brand: ON
File format: PDF
Size: 638 KB
MD5 Checksum: 6CC30B3ABFA3CF9148CCD975709AC8E1
Publication date: 04 May, 2012
Downloads: -
PDF Link: ON Semiconductor NCP1027 handbook PDF