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OB2571 Datasheet High Performance Qr Mode Primary-side Power Switch

Manufacturer: On-Bright

Overview: OB2571x High Performance QR mode Primary-Side Power Switch GENERAL.

This datasheet includes multiple variants, all published together in a single manufacturer document.

General Description

OB2571x is an excellent primary side regulation controller with CC/CV operation for medium level power AC/DC charger and adapter applications.

The device integrates an internal power MOSFET and operates in QR mode to provide high efficiency along with several functions of built-in protections.

It removes the need for secondary feedback circuitry to lower the total bill of material cost.

Key Features

  • Primary-side sensing and regulation operates in QR mode without TL431 and opto-coupler.
  • High precision constant voltage and current regulation at universal AC input.
  • Programmable CV and CC regulation.
  • Integrated power MOSFET.
  • Good dynamic response.
  • Programmable Brownout Protection and Line OVP Protection(For 2571Lx only).
  • Built-in line compensation for tight CC regulation.
  • Built-in fixed cable compensation.
  • Built-in primary winding inductance compens.

More Datasheets from On-Bright

Part Number Description
OB2576ATCP High Performance QR mode Primary-Side Power Switch
OB2576ATCPA High Performance QR mode Primary-Side Power Switch
OB2576BTCP High Performance QR mode Primary-Side Power Switch
OB2576BTCPA High Performance QR mode Primary-Side Power Switch
OB2576TCP High Performance QR mode Primary-Side Power Switch
OB2576TCPA High Performance QR mode Primary-Side Power Switch
OB2578T High Performance CCM/QR Mode Primary-Side Power Switch
OB2500N High Precision CC/CV Primary-Side Power Switch
OB2500P High Precision CC/CV Primary-Side Power Switch
OB2502 High Precision CC/CV Primary-Side Power Switch

OB2571 Distributor