STMicroelectronics STEVAL-ISA147V3 Fully Digital AC-DC Power Supply

STMicroelectronics STEVAL-ISA147V3 is a digital switch mode AC-DC converter consisting of two power stages. The first is an input semi-bridgeless power factor corrector (SBPFC) controlled by an STM32F051K8 microcontroller. The second is a regulation stage implemented with a LLC half-bridge with synchronous rectification (SR), controlled by an STM32F334C8 microcontroller. This 500W AC-DC converter uses the so-called bridgeless PFC topology which has the advantage of lower conduction losses and higher efficiency by eliminating the need for a diode rectifier stage.