L6564TDTR

Overview

The L6564TDTR is a current mode Power Factor Correction (PFC) controller operating in Transition Mode (TM). It serves as the compact version of the L6563S, embedding identical driver, reference, and control stages within a 10-pin SSOP package. The device features a highly linear multiplier and a special correction circuit to reduce mains current crossover distortion, ensuring wide-range operation with low Total Harmonic Distortion (THD). It utilizes a voltage feed-forward function for optimized loop stability and includes protections against overvoltage, feedback failures, brownouts, and inductor saturation.

Feature Summary

• Transition Mode PFC Control: Operates in discontinuous conduction mode suitable for medium power applications up to 400 W.
• Integrated Protection: Includes adjustable output overvoltage protection, feedback loop disconnection detection, AC brownout detection, and boost inductor saturation handling.
• High Performance Driver: Features a totem-pole output stage capable of sourcing 600 mA and sinking 800 mA for driving high-power MOSFETs or IGBTs.
• Advanced Line Regulation: Utilizes fast bidirectional input voltage feed-forward (1/V² correction) to improve line transient response during mains drops and surges.

Applications

• Power Factor Correction pre-regulators for Switched-Mode Power Supplies (SMPS)
• Personal Computer (PC) power supplies
• Flat screen TV power adapters
• Monitor power supplies

Procurement Notes

Verify the specific suffix 'TDTR' indicates the tape-and-reel packaging variant of the L6564 family. Confirm that the 10-pin SSOP package matches the design requirements. Ensure compatibility with the intended switching frequency and gate drive capabilities. Cross-reference the manufacturer's latest datasheet for any updates on environmental compliance or pinout definitions before finalizing procurement specifications.

Selection Notes

Select this component for designs requiring a compact solution for transition mode PFC applications. It is suitable for systems needing compliance with EN61000-3-2 standards. Consider its low startup current and fixed-off-time control capability when optimizing efficiency. Evaluate the 10-pin SSOP footprint constraints against available board space. Compare performance metrics against the larger L6563S if higher thermal dissipation or different packaging is required.

Part Context

The L6564 series represents STMicroelectronics' solution for cost-effective and space-constrained power factor correction. As a derivative of the L6563, it maintains functional parity while reducing physical size through a 10-pin SSOP package. This integration supports widespread adoption in consumer electronics and IT equipment where board real estate is limited but high power factor performance is mandatory.

Replacement Considerations

The L6563S is the primary functional equivalent offering identical electrical characteristics in a larger package. Verify pin-to-pin compatibility and thermal management requirements when substituting between these variants. Other transition mode controllers may require significant circuit redesign due to differences in control algorithms and driver strengths.