iW1691
Overview
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 features while minimizing the external component count, simplifying EMI design and lowering the total bill of material cost.
- 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 compensation *
- Very tight 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 primary-side feedback *
- Low start-up current (10 µA typical) *
