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OB2520 - High Precision CC/CV Primary-Side Controller

This page provides the datasheet information for the OB2520, a member of the OB2520-On High Precision CC/CV Primary-Side Controller family.

Datasheet Summary

Description

OB2520 is a high performance offline PSR controller for low power AC/DC charger and adapter applications.

It operates in primary-side sensing and regulation.

Consequently, opto-coupler and TL431 could be eliminated.

Features

  • including Cycle-by-Cycle current limiting, VDD ov.

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Datasheet preview – OB2520

Datasheet Details

Part number OB2520
Manufacturer On-Bright Electronics
File Size 401.71 KB
Description High Precision CC/CV Primary-Side Controller
Datasheet download datasheet OB2520 Datasheet
Additional preview pages of the OB2520 datasheet.

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Full PDF Text Transcription

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On Bright Confidential to Salcomp OB2520 High Precision CC/CV Primary-Side Controller GENERAL DESCRIPTION OB2520 is a high performance offline PSR controller for low power AC/DC charger and adapter applications. It operates in primary-side sensing and regulation. Consequently, opto-coupler and TL431 could be eliminated. Proprietary Constant Voltage (CV) and Constant Current (CC) control is integrated as shown in the figure below. In CC control, the current and output power setting can be adjusted externally by the sense resistor Rs at CS pin. In CV control, PFM operations are utilized to achieve high performance and high efficiency. In addition, good load regulation is achieved by the built-in cable drop compensation.
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