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UPSR108 - HIGH PRECISION CC/CV PRIMARY-SIDE PWM CONTROLLER

Datasheet Summary

Description

The UTC UPSR108 is a primary controller mode charger and adapter applications.

The controlled variable is transferred by an auxiliary winding from the secondary to the primary side.

The device integrates PWM controller to enhance the performance of Quasi Resonant (QR) mode flyback converters.

Features

  • S.
  • ±5% CC and CV Precision.
  • Easily Meet EPS Level 6.
  • QR Mode Control for High Efficiency and Low EMI.
  • Programmable CV and CC Regulation.
  • Less than 100mW Standby Power.
  • Programmable Cable drop Compensation.
  • Pin Floating Protection.
  • Fast Dynamic Response.

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Datasheet preview – UPSR108

Datasheet Details

Part number UPSR108
Manufacturer UTC
File Size 448.78 KB
Description HIGH PRECISION CC/CV PRIMARY-SIDE PWM CONTROLLER
Datasheet download datasheet UPSR108 Datasheet
Additional preview pages of the UPSR108 datasheet.

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Full PDF Text Transcription

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UNISONIC TECHNOLOGIES CO., LTD UPSR108 Preliminary HIGH PRECISION CC/CV PRIMARY-SIDE PWM CONTROLLER WITH FAST DYNAMIC RESPONSE  DESCRIPTION The UTC UPSR108 is a primary controller mode charger and adapter applications. The controlled variable is transferred by an auxiliary winding from the secondary to the primary side. The device integrates PWM controller to enhance the performance of Quasi Resonant (QR) mode flyback converters. The UTC UPSR108 operates in primary-side sensing and regulation. Opto-coupler and TL431 could be eliminated. It also provides off-time modulation to linearly decrease PWM frequency under light-load conditions so that low standby power can be achieved.
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