LD5523D2 - PWM+QR Multi-mode Controller

Leadtrend

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.

Key Features

PSR CCM+QR Multi-Mode Control.
Frequency Swapping for better EMI performance.
Low Startup Current (.

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LD5523D2 pwm+qr multi-mode controller by Leadtrend - Datasheet Preview

Datasheet Details

Part number	LD5523D2
Manufacturer	Leadtrend
File Size	962.94 KB
Description	PWM+QR Multi-mode Controller
Datasheet	LD5523D2 Datasheet

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Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

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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.