NCP1255 Datasheet Current-Mode PWM Controller

Manufacturer: onsemi

NCP1255 current-mode pwm controller by onsemi - Datasheet Preview

Datasheet Details

Part number	NCP1255
Manufacturer	onsemi
File Size	363.01 KB
Description	Current-Mode PWM Controller
Download	NCP1255 Download (PDF)

Overview

NCP1255 Current-Mode PWM Controller for Off-line Power Supplies featuring Peak Power Excursion The NCP1255 is a highly integrated PWM controller capable of delivering a rugged and high performance offline power supply in a SOIC−8 package.

With a supply range up to 35 V, the controller hosts a jittered 65−kHz switching circuitry operated in peak current mode control.

When the power on the secondary side starts to decrease, the controller automatically folds back its switching frequency down to a minimum level of 26 kHz.

Key Features

several key protective features: a brown.
out, a non.
dissipative Over Power Protection for a constant maximum output current regardless of the input voltage, two latched over voltage protection inputs.
either through a dedicated pin or via the Vcc input.
and finally, the possibility to externally adjus.

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