UPSR1103 Overview
The UTC UPSR1103 is a primary control unit for switch mode charger and adapter applications. The controlled variable is transferred by an auxiliary winding from the secondary to the primary side. The device integrates PWM controller to enhance the performance of discontinuous conduction mode (DCM) flyback converters.
UPSR1103 Key Features
- FEATURES
- High voltage startup
- ±5% constant voltage regulation at universal AC input
- High precision constant current regulation at universal AC input
- Primary side control without TL431 and opto-coupler
- Programmable CV and CC regulation
- Programmable cable pensation in CV mode
- Flyback topology in DCM operation
- Frequency hopping to reduce system EMI
- Driver MOSFET switch