IW1690 Overview
The iW1690 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 directly drives a BJT switching device and provides high efficiency along with a number of key built-in protection.
IW1690 Key Features
- Primary-side feedback eliminates opto-isolators and simplifies design
- Direct drive of BJT switching device
- Multi-mode operation for highest overall efficiency
- 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
IW1690 Applications
- Low power AC/DC adapter/chargers for cell phones, PDAs, digital still cameras
- Low power AC/DC adapter/chargers to replace RCC implementations