STMicroelectronics L6563H Manuals

This document is the datasheet for L6563H, which introduces the features and application scenarios of this product.

This application note describes the characteristics and features of a 150 W SMPS demonstration board (EVL150W-ADP-SR), tailored to all-in-one computer power supply (PS) specifications. The characteristics of this design are the very high efficiency and low consumption at light load which make it a viable solution for applications compliant with ENERGY STAR® eligibility criteria (EPA rev. 5.0 computer and EPA rev. 2.0 EPS). One of the key factors to achieving high efficiency at heavy load is the SRK2000. This synchronous rectification (SR) driver for LLC resonant converters allows a significant decrease in secondary side losses. Standby consumption is very low thanks to the sleep function embedded in the SRK2000 and the high voltage start-up circuit integrated in the L6563H. The possibility of driving the PFC burst mode via the L6599A PFC_STOP pin dramatically boosts light load efficiency. Additionally, a secondary sensing circuit, dedicated to driving the primary controller into burst mode, reduces deviation of light load efficiency against resonant circuit parameter spread, improving the repeatability of design in production volumes.

This application note presents a solution for designing a 400W fixed-off-time controlled PFC preregulator using the L6563S and L6563H. The solution utilizes peak current-mode control with fixed-off-time, combining the simplicity and affordability of TM operation with the high-current capability of FF-CCM operation.

This is an application note about L6563H 250 W TM PFC demonstration board, which introduces the main features and circuit description of the product.

This application note describes a demonstration board based on the transition-mode PFC controller L6563H and presents the results of its bench demonstration. The board implements a 100 W, wide-range mains input, PFC pre-conditioner suitable for ballast, adapters, flatscreen displays, and all SMPS having to meet the IEC61000-3-2 or the JEITA- MITI regulation. The L6563H is a current-mode PFC controller operating in transition mode (TM) and implementing an internal high-voltage startup circuitry.