UCC28740EVM-525 (TEXAS INSTRUMENTS)

Главная/Макетные Платы, Инструменты Оценки/Комплекты Разработчика Управления Питанием/Комплекты Разработчика Управления Питанием - AC / DC/UCC28740EVM-525 (TEXAS INSTRUMENTS)

Описание
Характеристики

Оценочная плата, обратноходовой оффлайн DCM преобразователь 10Вт

The UCC28740EVM-525 is an Evaluation Module for evaluate the operation and performance of UCC28740, a 10W offline discontinuous mode (DCM) flyback converter that provides constant-voltage (CV) and constant-current (CC) output regulation. It uses optical coupler feedback for tight voltage regulation and improved the transient response to large load steps and primary side control for accurate constant current regulation. The UCC28740 controller uses frequency modulation, peak primary current modulation, valley switching and valley skipping in its control algorithm in order to maximize efficiency over the entire operating range.

Universal AC input, 5V/2.1A output
<20mW No load power
>80% Average efficiency
Opto-coupled feedback for constant voltage regulation and fast dynamic response
Primary side control for tight constant current performance (±5% Output current regulation)
Internal 700V start-up switch to start up the supply directly from the bulk rail
Quasi-resonant valley switching operation for highest overall efficiency
Protection functions - over-voltage, low line, over-current and short circuit