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LD5523D2
11/11/2020
PWM+QR Multi-mode Controller with Primary Side Regulation
REV. 00
General Description
In order to enhance the efficiency performance, the LD5523D2 integrates 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 gains the system performance, but also brings the worse EMI capability, especially at boundary mode in heavy load. While the frequency swapping function of LD5523D2 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.
LD5523D2 Datasheet
