L6563ATR

Overview

The L6563ATR is a current-mode Power Factor Correction (PFC) controller operating in Transition Mode (TM). It features a highly linear multiplier and crossover distortion correction for low THD across wide mains ranges. The device includes voltage feedforward, tracking boost capability, and an internal 1.5% precise reference. Protection mechanisms include two-step OVP and feedback loop failure detection. It operates within a supply voltage range of 10.3V to 22V, with a start-up current of 50 µA. The component is housed in a 14-SOIC package.

Feature Summary

• Transition Mode operation with advanced crossover distortion reduction for low total harmonic distortion
• Voltage feedforward function and tracking boost option for improved stability and transient response
• Integrated protection against output overvoltage, feedback disconnection, and boost inductor saturation
• Interface with downstream PWM controllers to disable PFC during anomalous conditions or light loads

Applications

• AC/DC power supplies requiring compliance with Energy Star and Blue Angel standards
• High-end portable computer power adapters
• Two-stage SMPS architectures utilizing flyback converters
• Systems requiring remote ON/OFF control capabilities

Procurement Notes

Verify the specific suffix 'ATR' corresponds to the tape-and-reel packaging configuration required for your assembly line. Confirm that the 14-SOIC footprint matches your PCB design guidelines. Ensure compatibility with the intended input voltage range and thermal management requirements for the SOIC-14 package before finalizing procurement orders.

Selection Notes

Select this component when designing transition-mode PFC stages requiring low standby consumption and high efficiency at light loads. It is suitable for applications needing integrated protection against inductor saturation and feedback failures. Consider the L6563 variant if boost inductor saturation protection is mandatory, as it differs from the L6563A.

Part Context

The L6563 belongs to STMicroelectronics' family of transition-mode PFC controllers designed for wide-range mains operation. It serves as a preregulator stage in AC/DC conversion systems. The device integrates functions typically requiring multiple external components, reducing system complexity and cost while ensuring compliance with international energy-saving regulations.

Replacement Considerations

The L6563A is a related variant; however, it lacks the boost inductor saturation protection feature found in the standard L6563. Verify if this specific protection is critical for your application before substituting.