OB2571 Description
OB2571x is an excellent primary side regulation controller with CC/CV operation for medium level power AC/DC charger and adapter applications. The device integrates an internal power MOSFET and operates in QR mode to provide high efficiency along with several functions of built-in protections. It removes the need for secondary feedback circuitry to lower the total bill of material cost.
OB2571 Key Features
- Primary-side sensing and regulation operates in QR mode without TL431 and opto-coupler
- High precision constant voltage and current regulation at universal AC input
- Programmable CV and CC regulation
- Integrated power MOSFET
- Good dynamic response
- Programmable Brownout Protection and Line
- Built-in line pensation for tight CC
- Built-in fixed cable pensation
- Built-in primary winding inductance
- Built-in control loop pensation
OB2571 Applications
- Primary-side sensing and regulation operates in QR mode without TL431 and opto-coupler