High−Voltage Switcher For Medium Power Offline SMPS

The NCP1027 offers a new solution targeting output power levels from a few watts up to 15W in a universal mains flyback application. Our proprietary High-Voltage technology lets us include a Power MOSFET together with a startup current source, all directly connected to the bulk capacitor. To prevent lethal runaway in low input voltage conditions, an adjustable brown-out circuitry blocks the activity until sufficient input level is reached.Current-mode operation together with an adjustable ramp compensation offers superior performance in universal mains applications.Protection wise, a Timer detects an overload or a short-circuit and stops all operations, ensuring a safe auto-recovery, low duty cycle burst operation. An integrated, auto-recovery, Overvoltage Protection permanently monitors the VCC level and temporarily shuts down the driving pulses in case of an unexpected feedback loop runaway.Finally, a great RDS(on) figure makes the circuit an excellent choice for standby/auxiliary offline power supplies or applications requiring higher output power levels.
By ON Semiconductor
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NCP1027 Pinout, Pinouts
NCP1027 pinout,Pin out
This is one package pinout of NCP1027,If you need more pinouts please download NCP1027's pdf datasheet.

NCP1027 Application circuits
NCP1027 circuits
This is one application circuit of NCP1027,If you need more circuits,please download NCP1027's pdf datasheet.


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