On-Bright Electronics OB2372
OB2372 is an excellent primary side regulation Primary-side sensing and regulation operates controller with CC/CV operation for medium level in CCM/QR mode without TL431 and power AC/DC charger and adapter applications. It removes the need for secondary operation with low line voltage at full load feedback circuitry to lower the total bill of material Quasi-resonant operation for high efficiency in cost. e OB2372 offers comprehensive protection coverage with auto-recovery feature including fid Cycle-by-Cycle current limiting, VDD OVP, OLP, SCP, OTP etc.GENERAL DESCRIPTION
FEATURES
OB2372 is an excellent primary side regulation● Primary-side sensing and regulation operates controller with CC/CV operation for medium level in CCM/QR mode without TL431 and power AC/DC charger and adapter applications. opto-coupler The device directly drives a power MOSFET and
● High precision constant voltage and current operates in CCM/QR mode to provide high regulation at universal AC input efficiency along with several functions of built-in
● Fixed frequency (65kHz) CCM mode protections. It removes the need for secondary operation with low line voltage at full load feedback circuitry to lower the total bill of material
● Quasi-resonant operation for high efficiency in cost. Proprietary Constant Voltage (CV) and high line voltage Constant Current (CC) control is integrated as
● Good dynamic response shown in the figure below.
● Programmable CV and CC regulation In CV control, the controller changes the mode of
● Built-in primary winding inductance operation according to line voltage and load compensation condition.