Datasheet Texas Instruments UCC28700DBVT — Ficha de datos

Sample &
Buy Product
Folder Support &
Community Tools &
Software Technical
Documents Reference
Design UCC28700, UCC28701, UCC28702, UCC28703
SLUSB41A – JULY 2012 – REVISED DECEMBER 2014 UCC2870x Constant-Voltage, Constant-Current Controller With Primary-Side Regulation
1 Features 3 Description The UCC28700 family of flyback power supply
controllers provides Constant-Voltage (CV) and
Constant-Current (CC) output regulation without the
use of an optical coupler. The devices process
information from the primary power switch and an
auxiliary flyback winding for precise control of output
voltage and current. Low start-up current, dynamically
controlled operating states and a tailored modulation
profile support very low standby power without
sacrificing start-up time or output transient response. 1 < 30-mW No-Load Power for 5-Star Rating
Primary-Side Regulation (PSR) Eliminates OptoCoupler
В±5% Voltage and Current Regulation
130-kHz Maximum Switching Frequency Enables
High-Power Density Charger Designs
Quasi-Resonant Valley-Switching Operation for …