STMicroelectronics has introduced a high-voltage power converter that allows designers to build an ultra-low-consumption, simple, and cost-effective SMPS (switched-mode power supply) with a 5 V output voltage. Particularly suited 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.

Integrating an 800 V, avalanche-rugged, logic-level MOSFET with PWM, current-mode control, and multiple protection circuits, the VIPer01 high-voltage converter enables designers to create a simple and ultra-low-consumption SMPS in flyback, buck, or buck-boost configuration with a 5 V output. It is ideal for low-power applications in home appliances, building, lighting, and motion control as well as small industrial and consumer applications. Its integrated high-voltage start-up and sense-FET, error amplifier, and oscillator with jitter minimizes the number of external components required to design a complete application.

Features

• 800 V, avalanche-rugged Power MOSFET allowing ultra-wide V_AC input range
• Embedded HV start-up and sense-FET
• Current mode PWM controller
• Drain current limit protection
• Wide supply-voltage range from 4.5 V to 30 V
• Self-supply option allows auxiliary winding or bias components to be removed
• Jittered switching frequency reduces the EMI filter cost
• Embedded error amplifier with 1.2 V reference voltage
• Protections with automatic restart include overload/short-circuit, line or output OVP, maximum duty cycle counter, V_CC clamp
• Embedded thermal shutdown
• Built-in soft-start for improved system reliability