[PDF] What is IW1688 CONTROLLER? (551737)

The IW1688 is Low Power Off Line Digital PWM Controller made by iWatt.

Brief overview of the content in a IW1688 PDF file

www datasheetgo.com iW1688 Low Power Off line Digital PWM Controller 1 0 Features Primary side feedback eliminates opto isolators and simpli es design Multi mode operation for highest overall ef ciency 4 typical output voltage regulation No external compensation components required Complies with CEC EPA no load power consumption and average ef ciency regulations Built in output constant current control with foldback Low start up current 8 A typical Built in soft start Built in short circuit protection AC line under overvoltage and output overvoltage protection Fixed 40 kHz switching frequency 2 0 Description The iW1688 is a high performance power supply controller which uses digital control technology to build sensorless peak current mode PWM yback power supplies The device provides high ef ciency along with a number of key built in protection features while minimizing the external component count and bill of material cost The iW1688 removes the need for secondary feedback circuitry while achieving excellent line and load regulation It also eliminates the need for loop compensation components while maintaining stability over all operating conditions Pulse by pulse waveform analysis allows for