IW1707 Overview
Primary-side feedback eliminates opto-isolators and simplifies design Adaptively controlled soft start enables fast and smooth start-up for a wide range of capacitive loads (from 330 μF to 6,000 μF) Active start-up scheme enables shortest possible turn-on delay Direct drive of low-cost BJT switch Very tight constant voltage regulation EZ-EMI ® design enhances manufacturability Intrinsically low mon mode noise...
IW1707 Key Features
- Primary-side feedback eliminates opto-isolators and simplifies design
- Adaptively controlled soft start enables fast and smooth start-up for a wide range of capacitive loads (from 330 μF to 6
- Active start-up scheme enables shortest possible turn-on delay
- Direct drive of low-cost BJT switch
- Very tight constant voltage regulation -- EZ-EMI ® design enhances manufacturability
- Intrinsically low mon mode noise
- Optimized 72 kHz maximum PWM switching frequency achieves best size and efficiency
- Adaptive multi-mode PWM/PFM control improves efficiency
- Quasi-resonant operation for highest overall efficiency
- Dynamic base current control
