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LD7792S
08/06/2018
Transition-Mode PFC and Quasi-Resonant
Current Mode PWM Controller
REV: 00
General Description
The LD7792S is the enhancement version of the LD7790, the audible noise produced during start-up & light load is greatly reduced and the THDi is also further improved. LD7792S features transition mode Power Factor Correction (PFC) controller and Quasi-Resonant (QR) current mode controller for cost effective and fewer external components design of high power application.
The intelligent PFC switching on/off, zero current detection (ZCD) and frequency limitation mechanism enable a better efficiency under any load conditions.