On-Bright Electronics OB2560
OB2560 is a high performance offline PSR Driving MOSFET controller for low power AC/DC charger and Primary-side sensing and regulation without adapter applications. It operates in primary-side TL431 and opto-coupler sensing and regulation. OB2560 offers comprehensive protection coverage with auto-recovery feature including n Cycle-by-Cycle current limiting, VDD over voltage protection, feedback loop open protection, short e circuit protection, built-in leading edge blanking, VDD under voltage lockout (UVLO), OTP etc.| Part No. | OB2560 |
|---|---|
| Datasheet | OB2560 Download |
| Manufacturer |  On-Bright Electronics |
| Description | High Precision CC/CV Primary-Side Controller |
| Buy | Stock & Price |
GENERAL DESCRIPTION
FEATURES
OB2560 is a high performance offline PSR● Driving MOSFET controller for low power AC/DC charger and
● Primary-side sensing and regulation without adapter applications. Consequently,
● High precision constant voltage and current opto-coupler and TL431 could be eliminated. regulation at universal AC input Proprietary Constant Voltage (CV) and Constant
● Multi-mode PWM/PFM operation for efficiency Current (CC) control is integrated as shown in the improving figure below.
● Good dynamic response In CC control, the current and output power setting
● Programmable CV and CC regulation can be adjusted externally by the sense resistor
● Built-in primary winding inductance Rs at CS pin. In CV control, multi-mode operations compensation are utilized to achieve high performance and high
● Programmable cable drop compensation efficiency. In addition, good load regulation is achieved by the built-in cable drop compensation. Device operates in PFM in CC mode at large load to condition and it operates in PWM with frequency reduction at light/medium load.
