概要
説明
The iW3827 integrates a 650V power MOSFET with an advanced digital controller and offers configurable maximum and minimum switching frequencies to provide design flexibility in high PF solid-state lighting (SSL) constant voltage applications up to 8W. It supports the most common single-stage isolated and non-isolated configurations (buck, buck-boost or flyback) to create a front-end power supply for smart lighting applications. The iW3827 uses advanced, proprietary digital control technology to enable high power factor (PF >0.9) and low THD (<20%).
The iW3827 offers configurable maximum PWM switching frequency to allow optimization between size and efficiency and configurable minimum PFM switching frequency to optimize between transient performance and low no-load power consumption. The unique digital control technology accommodates large output capacitor variations while enabling fast transient response to keep the transient output voltage within 10% of its nominal level.
特長
- Up to 8W Output Power with Integrated 650V power MOSFET
- Supports Isolated or Non-Isolated Flyback, Buck or Buck-Boost Topologies
- High PF (>0.9) and Low THD (<20%) Over Wide Load Range
- PrimAccurate™ Primary-Side Control Achieves Tight Load and Line Accuracy (±3%)
- Adaptive Output Voltage Transient Detection
- Keeps Output Overshoot and Undershoot <10% for Most Dynamic Load Transitions
- Configurable PFM 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
- Fully Protected
- Overvoltage Protection
- Over-Temperature Protection
- Output Overvoltage, Overcurrent and Over-Load Protection
- Brown-Out Protection
製品比較
アプリケーション
- GU10, Candle, T8, Smart LED Lighting
- Front-End Pre-Regulation
設計・開発
モデル
ECADモデル
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