ST power factor correction controllers operate in transition mode (TM) and continuous current mode (CCM), and are suitable for a wide-range-mains operation. In systems where high current capability (provided by CCM operation) and the affordability of TM operation are both required, ST proposes a third solution based on a proprietary and patented solution: fixed off time (FOT). This method is based on a simple modification of a standard TM PFC controller operation, and requires just a few additional passive parts with no significant extra costs.
All transition mode PFC controllers have an internal multiplier that significantly reduces the internal total harmonic distortion (THD), making SMPS more efficient and thus compliant with EN61000-3-2 and other energy-saving regulations.
These devices embed advanced protection features, which make SMPS more robust and compact, requiring fewer external components. These features include output overvoltage, brown-out, feedback disconnection and boost inductor saturation protection.
The high voltage start-up capability, present in the L6564H and L6563H, helps improve the SMPS standby efficiency in systems that do not include the auxiliary power supply.
Featured Videos
ST simplfies access to digital power advantages with configurable high efficiency interleaved PFC controller
Recommended for you
Configurable high-efficiency interleaved PFC digital controller
ST has extended its portfolio of digital controllers with the STNRGPF01, a three-channel interleaved CCM PFC controller. Ideal for high power applications (above 1 kW), it delivers the flexibility and high efficiency of digital power without the technical challenges and time to develop custom DSP code. It can be easily and quickly configured using ST’s eDesignSuite online design environment. Simply enter the converter specs and run the configurator to generate the schematic, BoM, and downloadable firmware to configure the IC.
Main characteristics
- Up to 3-channel interleaved boost PFC
- Configurable phase-shedding strategy to maintain high efficiency across all load conditions
- Flexible frequency (up to 300 kHz) to control either an IGBT or MOSFET output stage
- I2C and UART interfaces for monitoring and control
- L6562AT Transition-mode PFC controller
- L6564 10 pin transition-mode PFC controller
- L6563 Advanced transition-mode PFC controller
- STNRGPF02 2-channel interleaved PFC driver with embedded digital inrush current limiter function
- STNRGPF12 2-channel interleaved PFC driver with embedded digital inrush current limiter function
- L6562 Transition mode
- L6563H High voltage start-up transition-mode PFC
- L6563S Enhanced transition-mode PFC controller
- L4984D CCM PFC CONTROLLER
- L6562A Transition-mode PFC controller BCD technology
- STNRGPF01 Three-channel interleaved CCM PFC digital controller
- L4981 L4981A: Fixed Frequency Average Current Mode; L4981B: Line Modulated Frequency Average Current Mode
- L6561 Transition mode power factor corrector
- L4985 CCM PFC controller with high voltage startup
- L6564T 10 pin transition-mode PFC controller for outdoor applications
- L4986 CCM PFC controller with high voltage startup
- L6563A Advanced transition-mode PFC controller
- L6564H High voltage start-up transition-mode PFC
