STMicroelectronics' STCH03TR is a PWM quasi-resonant controller specifically designed for low standby power supplies. The built-in HV startup cell with zero power consumption, the fully integrated blocks for primary side constant current output regulation, and the advanced power management make this IC a great choice for building a high efficiency and low standby consumption power supply with high overall and excellent dynamic performances.<strong>Features:</strong> Constant current output regulation (CC) with no optocoupler: reduce the number of external components (no need of CC/CV on secondary side or sense resistor) and higher efficiency due to no sense resistor power losses, 650 V embedded high voltage startup circuitry: allows controller to achieve low standby, below 10 mW, Quasi-resonant operation: high efficiency due to zero voltage switching operation, Automatic self-supply: possibility to work in constant current down to 0 V output, Feedforward compensation: output current regulation independent from mains variation, Intelligent frequency jitter: EMI reduction, Wall plug charger smartphone/tablet, Low power adapter notebook, Qualcomm quick chargers, QC 2.0 and QC 3.0, USB PD adapters, Auxiliary power supply
Feature
- Advanced power management for ultra-low standby power consumption (under 10 mW at 230 VAC)
- Fully integrated primary side constant current output regulation (CC)
- 650 V embedded HV start-up circuit with zero power consumption
- Quasi-resonant (QR) zero-voltage-switching (ZVS) operation
- Accurate and adjustable output OVP with options auto-restart (STCH03) or latched (STCH03L) after fault
- Output undervoltage protection (UVP) with auto-restart
- Input voltage feedforward compensation for mains-independent CC regulation
- Embedded thermal shutdown
- Intelligent frequency jitter for EMI suppression
