TDA4862HKLA1

Overview

The TDA4862HKLA1 is a Power Factor Correction (PFC) controller manufactured by Infineon Technologies. It is designed to achieve a power factor approaching unity and functions as an active harmonic filter for boost converters. The device features an internal start-up circuit with low current consumption, a zero-current detector for discontinuous conduction mode operation, and a high-current totem-pole gate driver. It includes a fast overvoltage regulator and a current sense input with an integrated low-pass filter. The unit utilizes a trimmed ±1.4% internal reference and incorporates undervoltage lock-out with hysteresis.

Feature Summary

• Controls boost converter topology as an active harmonic filter
• Integrates zero-current detection for discontinuous operation mode
• Features high-current totem-pole gate driver capability
• Includes internal low-pass filter on the current sense input

Applications

• High power factor AC-DC power supplies
• Active harmonic filtering systems
• Boost converter control circuits

Procurement Notes

Verify the specific suffix HKLA1 against official Infineon documentation to confirm package type and tape-and-reel specifications. Ensure compatibility with existing board layouts, as pinouts may vary across the TDA4862 family. Confirm RoHS compliance status through the manufacturer's material content declaration. Cross-reference the ordering code with the latest datasheet revision to avoid obsolete variants.

Selection Notes

Select this component when designing systems requiring high power factor correction and active harmonic mitigation. The integrated zero-current detector supports efficient discontinuous conduction modes. Evaluate the internal reference accuracy and gate driver strength against load requirements. Consider the low start-up current consumption for energy-efficient standby applications.

Part Context

This part belongs to the TDA4862 series of bipolar ICs from Infineon Technologies. The series is engineered for power factor correction applications. The TDA4862G variant shares pin compatibility with world standards. The HKLA1 designation indicates a specific packaging and reel configuration within this product line.

Replacement Considerations

The TDA4862G is a pin-compatible alternative within the same family. Verify functional equivalence and electrical parameters before substitution. Check for differences in packaging or reel specifications between the HKLA1 and G suffixes.