L6563S:Enhanced transition-mode PFC controller

The L6563S is a current-mode PFC controller operating in transition mode (TM). Coming with the same pin-out as its predecessor L6563, it offers improved performance and additional functions.

The highly linear multiplier, along with a special correction circuit that reduces crossover distortion of the mains current, allows wide-range-mains operation with an extremely low THD even over a large load range.

The output voltage is controlled by means of a voltage-mode error amplifier and an accurate(1% @ TJ = 25 °C) internal voltage reference. Loop’s stability is optimized by the voltage feedforward function (1/V2 correction), which in this IC uses a proprietary technique that considerably improves line transient response as well in case of mains both drops and surges (“bidirectional”).

Additionally, the IC provides the option for tracking boost operation, i.e. the output voltage is changed tracking the mains voltage.

The device includes disable functions suitable for remote ON/OFF control both in systems where the PFC pre-regulator works as a master and in those where it works as a slave. In addition to an overvoltage protection able to keep the output voltage under control during transient conditions, the IC is provided also with a protection against feedback loop failures or erroneous settings. Other on-board protection functions allow that brownout conditions and boost inductor saturation can be safely handled.

An interface with the PWM controller of the DC-DC converter supplied by the PFC pre-regulator is provided: the purpose is to stop the operation of the converter in case of anomalous conditions for the PFC stage (feedback loop failure, boost inductor’s core saturation, etc.) and to disable the PFC stage in case of light load for the DC-DC converter, so as to make it easier to comply with energy saving norms (Blue Angel, EnergyStar, Energy2000, etc.).

The totem-pole output stage, capable of 600 mA source and 800 mA sink current, is suitable for big MOSFET or IGBT drive. This, combined with the other features and the possibility to operate with ST’s proprietary Fixed-Off-Time control, makes the device an excellent solution for SMPS up to 400 W that need to be compliant with EN61000-3-2 and JEITA-MITI standards.

Key Features

  • Tracking boost function
  • Fast “bidirectional” input voltage feedforward (1/V2 correction)
  • Interface for cascaded converter's PWM controller
  • Remote ON/OFF control
  • Accurate adjustable output overvoltage protection
  • Protection against feedback loop disconnection (latched shutdown)
  • Inductor saturation protection
  • Low (≤ 100 μA) start-up current
  • 6 mA max. operating bias current
  • 1% (@ TJ = 25 °C) internal reference voltage
  • -600/+800 mA totem pole gate driver with active pull-down during UVLO
  • SO14 package
Product Specifications
DescriptionVersionSize
DS6441: Enhanced transition-mode PFC controller4.11 MB
Application Notes
DescriptionVersionSize
AN3065: 100 W transition-mode PFC pre-regulator with the L6563S2.11 MB
AN4026: 19 V - 90 W adapter with PFC for laptop computers using the L6563H and L66991.2988 KB
AN3119: 250 W transition-mode PFC pre-regulator with the new L6563S2.12 MB
AN2994: 400 W FOT-controlled PFC pre-regulator with the L6563S2.12 MB
AN3180: A 200 W ripple-free input current PFC pre-regulator with the L6563S1.01 MB
AN3027: How to design a transition-mode PFC pre-regulator with the L6563S and L6563H4.1889 KB
AN3142: Solution for designing a 400 W fixed-off-time controlled PFC preregulator with the L6563S and L6563H3.1835 KB
User Manuals
DescriptionVersionSize
UM0673: STEVAL-ISF001V2 kW FOT PFC board based on the L6563S2.0751 KB
Presentations
DescriptionVersionSize
Power Factor Corrector controllers portfolio1 MB
Flyers
DescriptionVersionSize
High-efficiency ATX design using asymmetrical half-bridge topology2.11 MB
Brochures
DescriptionVersionSize
Brochure Power management guide05.20164 MB
Solution Evaluation Tools
Part NumberManufacturerDescription
EVL6563S-100W100 W transition-mode PFC pre-regulator with the L6563S
EVL6563S-200ZRCA 200 W ripple-free input current PFC pre-regulator with the L6563S
EVL6563S-250W250W TRANSITION-MODE PFC PRE-REGULATOR WITH L6563S
EVL6566A-75WES419 V - 75 W SMPS compliant with latest Energy Star criteria using the L6563 and the L6566A
Sample & Buy
Part NumberPackagePacking TypeUnit Price (US$) *QuantityECCN (EU)ECCN (US)Country of Origin
L6563SSO-14Tube--NECEAR99CHINA
L6563STRSO-14Tape And Reel--NECEAR99CHINA
Quality & Reliability
Part NumberPackageGradeRoHS Compliance GradeMaterial Declaration**
L6563SSO-14IndustrialEcopack2 (**)md_k7-wspc-so-wspc-14-wspc-.15-wspc-jedec-wspc-ms-012_a5k7-wspc-ue39ac6.pdf
md_k7-wspc-so-wspc-14-wspc-.xml
L6563STRSO-14IndustrialEcopack2 (**)md_k7-wspc-so-wspc-14-wspc-.15-wspc-jedec-wspc-ms-012_a5k7-wspc-ue39ac6.pdf
md_k7-wspc-so-wspc-14-wspc-.xml
Enhanced transition-mode PFC controller L6563S
circuit_diagram_16116_thumbnail.png L6563S
100 W transition-mode PFC pre-regulator with the L6563S EVL6563S-100W
19 V - 90 W adapter with PFC for laptop computers using the L6563H and L6699 L6699
250 W transition-mode PFC pre-regulator with the new L6563S EVL6563S-250W
400 W FOT-controlled PFC pre-regulator with the L6563S L6563S
A 200 W ripple-free input current PFC pre-regulator with the L6563S EVL6563S-200ZRC
How to design a transition-mode PFC pre-regulator with the L6563S and L6563H EVL6563S-100W
Solution for designing a 400 W fixed-off-time controlled PFC preregulator with the L6563S and L6563H L6563H
STEVAL-ISF001V2 kW FOT PFC board based on the L6563S L6563S
EVL4984-350W: 350 W CCM PFC pre-regulator with the L4984D L4984D
10W off-line LED driver based on VIPER27 VIPER27
Very low drop voltage regulators with inhibit KFXX
md_k7-wspc-so-wspc-14-wspc-.15-wspc-jedec-wspc-ms-012_a5k7-wspc-ue39ac6.pdf L6563S
md_k7-wspc-so-wspc-14-wspc-.xml HCF4093