ST Manuals

This document describes the characteristics and features of a 170W power supply using L6564, L6599A, and Viper27LN, suitable for flat TVs or industrial applications. This design achieves very high efficiency and is compliant with ENERGY STAR eligibility criteria.

This document describes the application of SRK2000 in LLC resonant converters with synchronous rectification (SR). It first introduces the features of the IC, followed by a description of the board, and finally provides some considerations regarding circuit optimization and performance. The board is realized in four different configurations depending on the mounted SR MOSFETs.

This document describes a monolithic power management solution for Blu-ray disc players, providing true shutdown, reset, and programmable step-up voltage functions. It integrates two step-down converters and one step-up converter, optimized for powering low-voltage digital cores and supplying the blue laser in mobile applications. The output voltage is programmable and the device has high efficiency.

Reference design for double output SMPS for power line modem applications using ALTAIR04-900 primary controller

Application note Using the STM6600, STM6601 smart push-button on/off controller. This application note provides a detailed description of the primary applications and benefits of the STM6600-STM6601.

This document describes a dual push-button Smart Reset™ device with user-adjustable setup delays. It improves system stability compared to simple manual reset button devices and eliminates the need for a traditional reset access hole.

AN3256 is a ST application note that introduces a prototype of a non-dimmable, non-isolated LED driver. The physical design is small enough to fit in the base of an A19 lamp (screw bases 40 to 60 W equivalent). The coupled inductor has a stepdown winding to power the L6562A PFC driver. The design goals: Input: 96-132VAC, 60 Hz, non-dimmable, TRIAC dimmer safe (no damage); Output: 370 mA into strings of 5 to 12 LEDs; Topology: stepdown (buck) switching regulator; Features: regulation of LED current, power factor acceptable for US market for residential use, excellent efficiency. ST devices: PFC controller: L6562A; Switching FET: STD5NM50; Flywheel diode: STTH1R04.

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 describes how to implement a high power factor offline LED driver module using devices from the VIPer family in flyback configuration and with a TSM1052 as a constant current controller. This design avoids using high voltage electrolytic capacitors and evaluates the influence of the output bulk electrolytic capacitor on overall performance. Finally, a non-electrolytic configuration is implemented.

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.

The LNBH23L is an integrated solution for supplying/interfacing satellite LNB modules. It gives good performance in a simple and cheap way, with minimum external components necessary. It includes all functions needed for LNB supplying and interfacing, in accordance with international standards. Moreover, it includes an I²C bus interface and, thanks to a fully integrated step-up DC-DC converter, it functions with a single input voltage supply ranging from 8 V to 15 V.

This application note introduces a third approach to the operation of PFC pre-regulators: a solution that couples the simplicity and affordability of TM operation with the high-current capability of FF-CCM operation.