iW1691 Description
The iW1691 is a high performance AC/DC power supply controller which uses digital control technology to build peak current mode PWM flyback power supplies. The device operates in quasi-resonant mode at heavy load to provide high efficiency along with a number of key built-in protection.
iW1691 Key Features
- Primary-side feedback eliminates opto-isolators and simplifies design
- Quasi-resonant operation for highest overall efficiency -- EZ-EMI ® design to easily meet global EMI standards
- Up to 130 kHz switching frequency enables small adapter size
- Built-in cable drop pensation
- Very tight output voltage regulation
- No external pensation ponents required
- plies with CEC/EPA no-load power consumption and average efficiency regulations
- Built-in output constant-current control with primary-side feedback
- Low start-up current (10 µA typical)
- Built-in soft start
iW1691 Applications
- AC/DC adapter/chargers for cell phones, PDAs, digital still cameras
- AC/DC adapters for consumer electronics