ST power factor correction (PFC) controllers reduce total harmonic distortion (THD) in switched-mode power supplies, helping designs meet EN61000-3-2 and other energy-efficiency regulations across a wide mains input range.
The portfolio spans transition mode (TM) and continuous conduction mode (CCM) operation, covering power levels from below 75 W to several kilowatts. TM devices are suited to lower power designs where simplicity and cost are priorities; CCM devices address higher power levels where lower peak currents and reduced stress on passive components are required.
All TM devices include an internal multiplier that actively reduces THD, improving both regulatory compliance and overall SMPS efficiency.
Integrated protection features reduce external component count while increasing system robustness. These include output overvoltage, overcurrent, brown-out, feedback disconnection, and boost inductor saturation protection.
Certain devices add high-voltage start-up capability, improving standby efficiency in designs without a dedicated auxiliary power supply — a useful option in cost- and space-constrained applications.
ST PFC controllers are used across a broad range of end applications including high-end battery chargers, LED drivers and luminaires, adapters up to 240W, medical SMPS, desktop and server PSUs, e-bike chargers, telecom power supplies, and multifunction printers.
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ST power factor correction (PFC) controllers reduce total harmonic distortion (THD) in switched-mode power supplies, helping designs meet EN61000-3-2 and other energy-efficiency regulations across a wide mains input range.
The portfolio spans transition mode (TM) and continuous conduction mode (CCM) operation, covering power levels from below 75 W to several kilowatts. TM devices are suited to lower power designs where simplicity and cost are priorities; CCM devices address higher power levels where lower peak currents and reduced stress on passive components are required.
All TM devices include an internal multiplier that actively reduces THD, improving both regulatory compliance and overall SMPS efficiency.
Integrated protection features reduce external component count while increasing system robustness. These include output overvoltage, overcurrent, brown-out, feedback disconnection, and boost inductor saturation protection.
Certain devices add high-voltage start-up capability, improving standby efficiency in designs without a dedicated auxiliary power supply — a useful option in cost- and space-constrained applications.
ST PFC controllers are used across a broad range of end applications including high-end battery chargers, LED drivers and luminaires, adapters up to 240W, medical SMPS, desktop and server PSUs, e-bike chargers, telecom power supplies, and multifunction printers.
Discover our portfolio
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Benefits
- Regulation-ready designs across a wide power range
- Internal multiplier reduces THD, supporting compliance with EN61000-3-2 and other energy-efficiency standards
- Portfolio covers 75W to several kilowatts, spanning TM and CCM topologies
- Robust protection without added complexity
- Output overvoltage, overcurrent, brown-out, feedback disconnection, and boost inductor saturation protection all integrated
- Fewer external components required for a fully protected design
- Straightforward system integration
- Compatible with ST primary controllers across flyback, quasi-resonant, and resonant topologies
- Supported by reference designs, application notes, and design tools
- Proven at scale
- L6562A is a widely adopted industry reference for TM PFC design
- More than 3 billion units sold across the portfolio
eDesignSuite
eDesignSuite is a comprehensive set of easy-to-use design-aid utilities ready to help you streamline the system development process with a wide range of ST products.
Power Management Design Center
Thermal-electrical Simulators for Components
Signal Conditioning Design Tool
NFC/RFID Calculators
Power Management Design Center
Power Supply Design Tool
Power Management Design Center
LED Lighting Design Tool
Power Management Design Center
Digital Power Workbench
Power Management Design Center
Power Tree Designer
Thermal-electrical Simulators for Components
STPOWER Studio
Thermal-electrical Simulators for Components
PCB Thermal Simulator
Thermal-electrical Simulators for Components
AC Switches Simulator
Thermal-electrical Simulators for Components
Rectifier Diodes Simulator
Thermal-electrical Simulators for Components
Twister Sim
Thermal-electrical Simulators for Components
TVS Simulator
Thermal-electrical Simulators for Components
Estimate
Signal Conditioning Design Tool
Active Filters
Signal Conditioning Design Tool
Comparators
Signal Conditioning Design Tool
Low side Current Sensing
Signal Conditioning Design Tool
High side Current Sensing
NFC/RFID Calculators
NFC Inductance
NFC/RFID Calculators
UHF Link Budget
NFC/RFID Calculators
