UCC28730

Product Folder Order Now Technical Documents Tools & Software Support & Community UCC28730 SLUSBL5A – FEBRUARY 2015 – REVISED JUNE 2019 UCC28730 Zero-Power Standby PSR Flyback Controller With CVCC and Wake-Up Monitoring 1 Features 1 Enables Zero-Power (<5 mW) standby consumption Smart Wake-Up detection enables smallest output capacitance Primary-side regulation (PSR) eliminates optocoupler ±5% voltage regulation and current regulation across line and load 700-V start-up switch 83-kHz maximum switching frequency enables low stand-by power charger designs Resonant-ring valley-switching operation for highest overall efficiency Frequency-dither to ease EMI compliance Clamped gate-drive output for MOSFET Overvoltage, low-line, and overcurrent protection functions Programmable cable compensation SOIC-7 package 2 Applications Adapters and chargers for smart phones, tablets, and other consumer electronics TV and monitor power supplies SMPS for home appliances and industrial automation Standby and auxiliary power supplies 3 Description The UCC28730 isolated-flyback power supply controller provides Constant-Voltage (CV) and Constant-Current (CC) output regulation without the use of an optical coupler, and wake-up signal detection to improve transient response to large load steps. A minimum switching frequency of 30 Hz facilitates achieving less than 5 mW of no-load power. This device processes information from the primary power switch and an auxili...