* From page 10 of AN954: Figure 10 shows a capacitive power supply with several UL considerations designed in. A fuse is added to protect the circuit during an over-current condition. Adding R2 in parallel with C1 creates a filter that will attenuate EMI from traveling back onto the line. A varistor, or MOV, provides transient protection.

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 VIPer53 combines an enhanced current mode PWM controller with a high voltage MDMesh Power Mosfet in the same package. VIPer53 is available in two different packages, DIP-8 and PowerSO-10. This reference board is an offline wide range power supply that incorporates VIPer53 and is set up for secondary regulation by driving the PWM controller through an optocoupler.

The new VIPer17 device integrates in the same package two components: an advanced PWM controller built in BCD6 technology and an 800 V avalanche rugged vertical power MOSFET. The device is suitable for off line power converter operating both, with wide range input voltage (85 VAC - 270 VAC) up to 7 W or with single range input voltage (85 VAC - 132 VAC or 175 VAC – 265 VAC). With European range i…

This document describes how to design a 3-phase (106 ~ 848 VAC) power supply with the UC3845B PWM driver and the new STC04IE170 ESBT as main switch. It is associated with the release of the STEVAL-IPB001V1 demo board.

This document describes the characteristics and performance of a 90 W wide range input AC-DC adapter based on asymmetrical half-bridge topology (AHB).

Many appliances today use non-isolated power supply to furnish low output power required to run a micro, LED display, and a few relays or AC switches. This type of power supply has a single rectifier so as to reference the neutral to output ground in order to fire TRIACs or AC switches.

The UCC28600 evaluation module (EVM) is a 120-W off-line quasi-resonant flyback converter providing a 19.4-V regulated output at 6.2 A of load current, operating from a universal ac input.

This user manual describes a high efficiency solution for industrial power supplies with a continuous output power of 150 W and peak power up to 240 W. It takes advantage of the resonant approach to minimize switching losses, resulting in higher than 90% efficiency. The topology is based on half-bridge and operated in a resonant fashion by means of a resonant LC tank, driven by the L6599 dedicate…

This document describes a universal input charger power supply designed to replace linear transformer based chargers/adapters in low power applications. The power supply utilizes a LinkSwitch-LP IC, LNK564P. The document contains the power supply specification, schematic, bill of materials, transformer documentation, printed circuit layout, and performance data.