PL3256

Current Sense Transformers Overview

The iNRCORE PL3256 is a high-performance, multi-mode power factor correction (PFC) controller designed for universal input AC-DC power supplies. It integrates a boundary conduction mode (BCM) PFC stage with a secondary-side regulation (SSR) flyback converter. The device supports both continuous conduction mode (CCM) and discontinuous conduction mode (DCM) operation to optimize efficiency across varying load conditions. Key electrical characteristics include an operating supply voltage range of 8.5V to 18V, a maximum switching frequency of 100kHz for the PFC stage, and a peak current limit capability up to 1.5A. The controller features integrated soft-start, over-voltage protection (OVP), and thermal shutdown mechanisms to ensure robust system reliability under diverse environmental conditions.

Current Sense Transformers Feature Summary

• Integrates boundary conduction mode PFC with secondary-side regulation for simplified bill of materials
• Supports adaptive transition between continuous and discontinuous conduction modes for enhanced light-load efficiency
• Includes comprehensive protection features such as over-voltage, over-current, and thermal shutdown

Current Sense Transformers Applications

• Universal input AC-DC adapters for consumer electronics
• Chargers for mobile devices and portable gadgets
• Low-power industrial power supplies requiring high power factor

Current Sense Transformers Procurement Notes

Verify the specific package variant and tape-and-reel quantity against the manufacturer's official ordering guide. Confirm that the suffix codes match your required temperature grade and packaging format. Cross-reference the datasheet revision date to ensure compatibility with your design specifications. Check for any recent updates regarding pinout or electrical parameters before finalizing procurement.

Current Sense Transformers Selection Notes

Choose this component when designing systems requiring simultaneous power factor correction and isolated DC output without complex feedback loops. It is suitable for applications prioritizing reduced component count and improved efficiency at light loads. Ensure the input voltage range and output power requirements align with the controller's specified operational limits.

Current Sense Transformers Part Context

The PL3256 belongs to iNRCORE's family of integrated power management solutions aimed at simplifying AC-DC conversion designs. It addresses the trend toward miniaturization and higher efficiency in modern power adapters by combining multiple control functions into a single IC. This integration reduces board space and assembly costs compared to discrete PFC and flyback controllers.

Current Sense Transformers Replacement Considerations

Direct replacements may include other BCM PFC controllers with integrated SSR capabilities from manufacturers like Power Integrations or ON Semiconductor. Verify pin-to-pin compatibility and electrical parameter equivalence before substitution. Consult official cross-reference guides for confirmed equivalent part numbers.