USRB01 Overview
The UTC USRB01 is a primary controller for charger and adapter applications. The controlled variable is transferred by an auxiliary winding from the secondary to the primary side. The device uses Pulse Frequency Modulation (PFM) method to build discontinuous conduction mode (DCM) flyback power supplies.
USRB01 Key Features
- FEATURES
- ±5% constant voltage regulation at universal AC input
- Primary side control without TL431 and opto-coupler
- High precision constant current regulation at universal AC input
- Programmable CV and CC regulation
- Eliminates control loop pensation circuitry
- Flyback topology in DCM operation
- Random frequency modulation to reduce system EMI
- Built-in power NPN
- Programmable cable drop pensation
