NCP1378 - PWM Current-Mode Controller

onsemi

Datasheet Details

Part number	NCP1378
Manufacturer	onsemi
File Size	298.27 KB
Description	PWM Current-Mode Controller
Datasheet	NCP1378 Datasheet

Overview

NCP1378 PWM Current- Mode Controller for Free- Running Quasi- Resonant Operation The NCP1378 combines a true current mode modulator and a demagnetization detector to ensure full borderline/critical Conduction Mode in any load/line conditions and minimum drain voltage switching (Quasi- Resonant operation).

Due to its inherent skip cycle capability, the controller enters burst mode as soon as the power demand falls below a predetermined level.

As this happens at low peak current, no audible noise can be heard.

Key Features

an efficient protective circuitry that, in presence of an overcurrent condition, disables the output pulses and enters a safe burst mode, trying to restart. Once the default has gone, the device auto- recovers. Finally an internal 1.0 ms Soft- Start eliminates the traditional startup stress. The NCP1378 is tailored for low voltage.

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