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LD5523T
04/08/2021
Multi-Mode PWM Controller of Flyback with
MOSFET Integrated
REV. 00
General Description
The LD5523T is built in a multi-mode PWM controller. The multi-mode PWM controller which consists of Quasi-Resonant (QR) PWM control for light load condition and Continue Conduction Mode (CCM) for heavy load condition. Moreover, the QR controller not only gains the system performance, but also brings the worse EMI capability, while the frequency swapping function of LD5523T can reduce the EMI emission of SMPS and helps the power circuit designers to simply deal with EMI filter and saves several component and developing time.