STMicroelectronics VIPER01 high-voltage converter

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STMicroelectronics has introduced a high-voltage power converter that allows designers to build an ultralow-consumption SMPS (switched-mode power supply) with a 5 V output voltage.

Particularly suitable for low-power applications in home appliances, building, lighting and motion control, as well as small industrial and consumer applications, the VIPER01 operates directly from a rectified mains supply and integrates an 800 V avalanche-rugged power MOSFET with PWM (pulse-width modulation) current-mode control and multiple protection circuits. The converter is tailored to provide the auxiliary supply to microcontrollers in IoT devices that are permanently connected to the internet or a local network.

The device belongs to the VIPerPlus family of high-voltage converters and exploits ST’s BCD (Bipolar-CMOS-DMOS) technology. BCD allows the integration in a single chip of a high-performance PWM controller with a high-voltage logic-level control transistor, protection and diagnostic circuitry, without significantly impacting the robustness of the power transistor.

The product has low power consumption and switches automatically to pulse frequency modulation under light load conditions. It can be used in fly-back, buck and buck-boost converter topologies, while the integrated high-voltage start-up, sense-FET, error amplifier and oscillator with jitter allow a complete application to be designed with the minimum number of external components.

For more information: http://www.st.com/viperplus.