IW1706 - Low-Power Off-Line Digital Green-Mode PWM Controller
Description
Primary-side feedback eliminates opto-isolators and simplifies design
Adaptively controlled soft start-up enables fast and smooth start-up for a wide range of capacitive loads (from 330 μF to 6000 μF)
Very tight constant voltage regulation
EZ-EMI ® design
iW1760- Off-Line Digital Green-Mode Quasi-Resonant PWM Controller
iW1761- Ultra-Low No-Load Power Digital Quasi-Resonant PWM Controller
iW1762- Ultra-Low No-Load Power Digital Quasi-Resonant PWM Controller
iW1767- Ultra-Low No-Load Power Digital Quasi-Resonant PWM Controller
iW1676- Low-Power Off-Line Digital Green-Mode PWM Controller
Full PDF Text Transcription
Click to expand full text
iW1706
Low-Power Off-Line Digital Green-Mode PWM Controller
1.0 Features
2.0 Description
●● Primary-side feedback eliminates opto-isolators and simplifies design
●● Adaptively controlled soft start-up enables fast and smooth start-up for a wide range of capacitive loads (from 330 μF to 6000 μF)
●● Very tight constant voltage regulation ●● EZ-EMI ® design enhances manufacturability
●● Intrinsically low common 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
●● Direct drive of low-cost BJT switch
●● Dynamic base current control
●● No external compensation components required
●● Complies with EPA 2.
IW1706 Datasheet
