NCL30082 - Dimmable Quasi-Resonant Primary Side Current-Mode Controller

Datasheet Summary

Description

Pin No Pin Name Function 1 SD Thermal Fold back and shutdown 2 ZCD Zero Crossing Detection 3 CS Current sense 4 GND 5 DRV Driver output 6 VCC Supplies the controller 7 VIN Input voltage sensing Brown Out 8 DIM Analog / PWM dimming Pin Description Connectin

Features

Quasi.
resonant Peak Current.
mode Control Operation.
Primary Side Sensing (no optocoupler needed).
Wide VCC Range.
Source 300 mA / Sink 500 mA Totem Pole Driver with 12 V Gate Clamp.
Precise LED Constant Current Regulation ±1% Typical.
Line Feed.
forward for Enhanced Regulation Accuracy.
Low LED Current Ripple.
250 mV ±2% Guaranteed Voltage Reference for Current Regulation.
~0.9 Power Factor w.

ON Semiconductor

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Datasheet Details

Part number	NCL30082
Manufacturer	ON Semiconductor
File Size	355.38 KB
Description	Dimmable Quasi-Resonant Primary Side Current-Mode Controller
Datasheet	NCL30082 Datasheet
Additional preview pages of the NCL30082 datasheet.

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Full PDF Text Transcription

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NCL30082 Dimmable Quasi-Resonant Primary Side Current-Mode Controller for LED Lighting with Thermal Fold-back The NCL30082 is a PWM current mode controller targeting isolated flyback and non−isolated constant current topologies. The controller operates in a quasi−resonant mode to provide high efficiency. Thanks to a novel control method, the device is able to precisely regulate a constant LED current from the primary side. This removes the need for secondary side feedback circuitry, biasing and an optocoupler. The device is highly integrated with a minimum number of external components. A robust suite of safety protection is built in to simplify the design. This device supports analog/digital dimming as well as thermal current fold−back.

Published: Oct 20, 2014 |