L6563HTR

Overview

The L6563HTR is a current-mode Power Factor Correction (PFC) controller operating in Transition Mode (TM), manufactured by STMicroelectronics. It features a high voltage start-up source, eliminating the need for an auxiliary power supply during startup. The device includes a highly linear multiplier and crossover distortion reduction circuitry to ensure low Total Harmonic Distortion (THD) across wide mains ranges. 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. It operates within a temperature range of -40 °C to +150 °C and is housed in a 16-pin SOIC package.

Feature Summary

• Integrates a high voltage start-up source for auxiliary-supply-free operation
• Features a highly linear multiplier with crossover distortion correction for low THD
• Includes voltage feedforward (1/V² correction) for improved line transient response
• Provides interface capabilities with downstream PWM controllers for system protection

Applications

• Power factor correction pre-regulators acting as master stages
• Systems requiring compliance with energy saving regulations such as Blue Angel or EnergyStar
• Wide-range-mains AC-DC power supplies
• Transition mode PFC designs with integrated DC-DC converters

Procurement Notes

Verify the specific suffix HTR against the manufacturer's official datasheet to confirm the reel packaging configuration and tape specifications. Ensure the component grade matches industrial requirements, as the L6563H series is designed for robust performance in demanding environments. Cross-reference the 16-pin SOIC footprint dimensions with your PCB layout guidelines before finalizing procurement orders.

Selection Notes

Select this component when designing transition mode PFC circuits that require high efficiency without auxiliary winding complexity. The internal high voltage start-up feature simplifies the bill of materials. Consider the 70 kHz switching frequency for balancing EMI and magnetic component size. The device is suitable for applications needing precise output voltage control and comprehensive protection against feedback loop failures or inductor saturation.

Part Context

The L6563HTR belongs to the L6563H family of advanced transition-mode PFC controllers from STMicroelectronics. This series builds upon the standard L6563 core by adding a high voltage start-up source, distinguishing it from variants like the L6563S which lack this feature. The family is engineered for high-performance power factor correction in modern switch-mode power supplies.

Replacement Considerations

The L6563S is a related variant within the same family but lacks the high voltage start-up source found in the L6563H. Direct substitution requires verifying if the application design can support an auxiliary supply or if the start-up circuitry must be modified accordingly.