IW1688
Overview
The iW1688 is a high performance power supply controller which uses digital control technology to build sensorless peak current mode PWM flyback power supplies. The device provides high efficiency along with a number of key built-in protection features while minimizing the external component count and bill of material cost.
- Primary-side feedback eliminates opto-isolators and simplifies design Multi-mode operation for highest overall efficiency ±4% typical output voltage regulation No external compensation components required Complies with CEC/EPA no load power consumption and average efficiency regulations Built-in output constant-current control with foldback Low start-up current (8 µA typical) Built-in soft start Built-in short circuit protection AC line under/overvoltage and output overvoltage protection Fixed 40 kHz switching frequency
