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iW1819 - Quasi-Resonant PWM Controller

Description

The iW1819 integrates a high performance AC/DC power supply controller using digital control technology and a power BJT switch in one package to enable compact peak current mode PWM flyback power supplies.

Features

  • multiple key protection features, allowing designs with improved efficiency and lower EMI, while lowering the bill of material cost. The iW1819 features a distinctive soft-start scheme, which allows for fast and yet smooth start-up with both small and large capacitive loads. It removes the need for a secondary feedback circuit while achieving excellent line and load regulation. It also eliminates the need for loop compensation components while maintaining stability across all operating condition.

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Datasheet preview – iW1819

Datasheet Details

Part number iW1819
Manufacturer Renesas
File Size 1.24 MB
Description Quasi-Resonant PWM Controller
Datasheet download datasheet iW1819 Datasheet
Additional preview pages of the iW1819 datasheet.

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Full PDF Text Transcription

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iW1819 18W AccuSwitchTM Quasi-Resonant PWM Controller with Integrated 800V Power BJT 1 Description The iW1819 integrates a high performance AC/DC power supply controller using digital control technology and a power BJT switch in one package to enable compact peak current mode PWM flyback power supplies. The device operates in quasi-resonant mode and features multiple key protection features, allowing designs with improved efficiency and lower EMI, while lowering the bill of material cost. The iW1819 features a distinctive soft-start scheme, which allows for fast and yet smooth start-up with both small and large capacitive loads. It removes the need for a secondary feedback circuit while achieving excellent line and load regulation.
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