Digital Constant-Voltage Offline PWM Controller with Power Factor Correction for Applications up to 90W
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Overview
Description
The iW3627 is a digital offline PWM controller that provides a constant voltage for smart LED lighting applications up to 90W with high power factor (PF >0.9) and low THD (<20%). It supports the most common single-stage isolated and non-isolated topologies (buck, buck-boost or flyback) as a front-end or standalone power supply in solid-state lighting (SSL) applications with advanced digital control technology.
Features
- Up to 90W Output Power with Enhanced Internal MOSFET Driver
- Supports Isolated or Non-Isolated Topologies Including Flyback, Buck or Buck-Boost
- High PF (>0.9) and Low THD (<20%)
- Adaptive Output Voltage Transient Detection
- Enables Fast Transient Response with Variation < +/-10% of nominal output voltage
- Accommodates Large Capacitance Variations and Capacitor Aging Configurable Minimum Switching Frequency
- Enables Low No-Load Standby Power Consumption (<200mW)
- Configurable PWM Maximum Switching Frequency
- Optimizes for High Efficiency, Small Size
- Active Start-Up – Reduces Turn-On Time without Increasing Stand-By Power
- Tiny 6-Pin SOT-23 Package
- Fully Protected
- Input Brown-Out Protection
- Over-Temperature Protection
- Output Overvoltage, Overcurrent and Over-Load Protection
Applications
- Smart LED Lighting
- LED Lighting Ballasts
- Front-End Pre-Regulator
Design & Development
Models
ECAD Models
Schematic symbols, PCB footprints, and 3D CAD models from SamacSys can be found by clicking on products in the Product Options table. If a symbol or model isn't available, it can be requested directly from the website.
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