L6564HTR

Overview

The L6564HTR is a current mode Power Factor Correction (PFC) controller operating in transition mode, packaged in a compact 10-pin SSOP. It integrates the driver, reference, and control stages found in the L6563S device. Key electrical parameters include a switching frequency of 70 kHz, a maximum supply voltage of 22.5 V, and a minimum supply voltage of 10.3 V. The device features a totem-pole output stage capable of sourcing 600 mA and sinking 800 mA. It operates within a temperature range of -40 °C to +150 °C and includes an accurate internal voltage reference with 1% precision at 25 °C.

Feature Summary

• Integrates a highly linear multiplier and correction circuit to reduce mains current crossover distortion for low THD operation.
• Features fast bidirectional input voltage feed-forward using a proprietary 1/V² correction technique to improve line transient response.
• Includes comprehensive protection mechanisms such as overvoltage protection, feedback loop failure detection, inductor saturation handling, and AC brownout detection.

Applications

• Switching Mode Power Supplies (SMPS) up to 400 W
• Power supplies requiring compliance with EN61000-3-2 standards
• Power supplies requiring compliance with JEITA-MITI standards

Procurement Notes

Verify the specific suffix 'HTR' against the manufacturer's official datasheet to confirm tape-and-reel packaging details. Ensure the component matches the 10-pin SSOP package dimensions and pinout configuration required by the design. Cross-reference the manufacturing date code and lot information to ensure compatibility with assembly processes. Confirm that the device meets all relevant environmental and safety certifications applicable to the target market.

Selection Notes

Select this controller for designs requiring transition mode PFC with high efficiency and low total harmonic distortion. The integrated 1/V² correction makes it suitable for applications sensitive to mains voltage fluctuations. Consider the 600 mA source and 800 mA sink drive capability when selecting external MOSFETs or IGBTs. Verify that the thermal performance of the SSOP package supports the power dissipation requirements of the specific application environment.

Part Context

The L6564HTR belongs to STMicroelectronics' L656x series of PFC controllers. It serves as a compact alternative to the L6563S, offering similar functionality in a smaller footprint. This series is designed for offline AC-DC conversion applications where power factor correction is critical for regulatory compliance and energy efficiency.

Replacement Considerations

The L6563S is the larger version of this device with identical core functionality but in a different package. Verify pin-to-pin compatibility if substituting with other L656x variants. Check for updated revisions or superseded part numbers in the manufacturer's lifecycle documentation before finalizing the design.