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SF5545 - Current Mode PWM Controller

Description

SF5545 is a high performance, high efficiency, highly integrated current mode PWM controller for offline flyback

Features

  • Less than 100mW Standby Power.
  • Proprietary η -BalanceTM Control to Boost Light Load Efficiency.
  • Proprietary “Zero OCP/OPP Recovery Gap” Control.
  • Proprietary “Audio Compensation” Noise Free OCP.
  • Latch Plug-off Protection with External Triggering.
  • Fixed 65KHz Switching Frequency.
  • Built-in Frequency Shuffling.
  • Built-in Soft Start Function.
  • Frequency Reduction and Burst Mode Control for Energy Saving.
  • Built-in Synchronous Slope Compens.

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Datasheet preview – SF5545

Datasheet Details

Part number SF5545
Manufacturer SiFirst
File Size 718.94 KB
Description Current Mode PWM Controller
Datasheet download datasheet SF5545 Datasheet
Additional preview pages of the SF5545 datasheet.

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Full PDF Text Transcription

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SF5545 η -BalanceTM Current Mode PWM Controller FEATURES ◆ Less than 100mW Standby Power ◆ Proprietary η -BalanceTM Control to Boost Light Load Efficiency ◆ Proprietary “Zero OCP/OPP Recovery Gap” Control ◆ Proprietary “Audio Compensation” Noise Free OCP ◆ Latch Plug-off Protection with External Triggering ◆ Fixed 65KHz Switching Frequency ◆ Built-in Frequency Shuffling ◆ Built-in Soft Start Function ◆ Frequency Reduction and Burst Mode Control for Energy Saving ◆ Built-in Synchronous Slope Compensation ◆ Cycle-by-Cycle Current Limiting ◆ Built-in Leading Edge Blanking (LEB) ◆ Current Mode Control ◆ Pin Floating Protection ◆ Very Low Startup Current ◆ Audio Noise Free Operation ◆ VDD UVLO, OVP & Clamp APPLICATIONS Offline AC/DC Flyback Converter for ◆ AC/DC Adaptors
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