This document describes a low power adapter that can be used in travel battery charger applications. It uses the new Constant Voltage Constant Current (CVCC) controller TSM1052, which is housed in one of the smallest packages available (SOT23-6L). Thanks to its low consumption and low operating voltage, good electrical performance is achieved. Another important feature of this SMPS is the absence…

19 V - 75 W laptop adapter with tracking boost PFC pre-regulator, using the L6563 and the L6566A.

This demonstration board is a 90 W wide-range mains AC-DC adapter which is power factor corrected. Its electrical specifications are suitable for typical high-end portable computer power adapters. The particular benefits of this design are the very low no-load input consumption (<0.5 W) and the very high global efficiency.

The purpose of this application note is to explain the design of an 80 W 3-phase auxiliary power supply for motor drives and welding applications. To reach a high level system in terms of both efficiency and cost, the L6565 PWM controller has been selected as well as the STC04IE170HV as the main switch. The combination of these STMicroelectronics parts provides a highly efficient solution for hig…

The schematic in Figure 2 shows an adapter design using the LNK625PG that provides very tight constant voltage (CV) performance. The circuit is designed to operate from 90 VAC to 265 VAC input, with an output voltage of 5 V providing a maximum load current of 1.2 A. It consumes very little standby power and uses no Y-Capacitor to meet stringent EMI requirements. The adapter also meets and exceeds…

This 600-W EVM was designed to demonstrate how the UCC28950 control device could be used in high-efficiency applications by achieving ZVS from 50% to 100% load. To achieve this high efficiency the UCC28950 was designed to drive synchronous rectifiers on the secondary side of the full bridge converter. The UCC28950 also incorporates a burst mode and DCM function to improve no-load efficiency. Plea…

The LinkSwitch-XT family has been developed to replace discrete component self-oscillating, ringing choke converters (RCC) and linear regulator-based supplies, in low power adapter applications.

Design Accelerator Kits (DAK) provide all of the essential materials to get you started on your next switch mode power supply design. The kits include a fully assembled and tested prototype power supply board, comprehensive engineering report, product samples, unpopulated circuit board, data sheet and other related documentation.

This reference design report describes a switched-mode power supply that was designed to replace line frequency transformer based solutions.

A description of 28W switching mode power supply evaluation board designed in a quasi-resonant flyback converter topology using ICE2QR0665G Quasi-resonant CoolSET.