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LD5523K - Multi-Mode PWM Controller of Flyback

General Description

In order to enhance the efficiency performance, the LD5523K 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

  • Secondary-side feedback control with quasi-resonant + CCM operation.
  • Low Startup Current (.

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Datasheet Details

Part number LD5523K
Manufacturer Leadtrend
File Size 821.83 KB
Description Multi-Mode PWM Controller of Flyback
Datasheet download datasheet LD5523K Datasheet

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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LD5523K 04/23/2019 Multi-Mode PWM Controller of Flyback with REV. 01 Integrated BNI/BNO and Bulk cap. OVP General Description In order to enhance the efficiency performance, the LD5523K 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 not only gains the system performance, but also brings the worse EMI capability, while the frequency swapping function of LD5523K 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.