SY5019AFAC中文资料Flyback controller For adapters or chargers数据手册Silergy规格书

描述 Description

SY5019A is a PWM/PFM controller with several features to enhance performance of Flyback converters that targeting at quick charge adapter. It is cooperated with SY5026 or SY5025 to realize QC 2.0 .

It drives Flyback controller in the Quasi-Resonant mode for higher efficiency and better EMI performance.

SY5019A adopt burst mode control for improved efficiency and the output current is detected by internal primary detection technology to achieve more reliable Over Current Protection and Short Circuit Protection.Over current point is different for different output voltage. The output voltage is achieved by secondary side control technology for good load and line regulation.

SY5019A provides a fast internal HV start up circuit without consuming any standby power to achieve lowest no-load power consumption.