LOW POWER OFF-LINE CC/CV PRIMARY-SIDE POWER SWITCH

DESCRIPTION

The UTC PSRB05 is a primary control switch mode charger and

adapter applications. Built-in VCBO for 800V power BJT.

The UTC PSRB05 operates in primary-side sensing and

regulation. Opto-coupler and TL431 could be eliminated. It can

achieve good CC/CV characteristics and less than 75mW standby

power can be achieved.

The UTC PSRB05 achieves high precision CV/CC regulation

and high power efficiency. It offers comprehensive protection

coverage with auto-recovery features including cycle-by-cycle

current limiting, open circuit protection, over voltage protection,

short circuit protection etc.

FEATURES

* Built-in 800V Power BJT

* High precision constant current regulation at universal AC input

* Primary side control without TL431 and opto-coupler

* Programmable cable compensation in CV mode

* Programmable line voltage compensation

* ≤75mW standby power consumption

* Frequency hopping to reduce system EMI

* Built-in leading edge blanking

* Open circuit protection

* Over voltage protection