Uninterruptible Power Supply (UPS) systems are widely used to safeguard power supply for critical components in a myriad of applications ranging from telecommunications and data centers, to various industrial facilities. These systems ensure reliable voltage supply by providing a filter function in addition to compensating for short-term power outages from the grid.

There are typically two main configurations for UPS systems, offline and online. Offline systems are connected in parallel to the main supply line and provide support to the main line. Differently, online systems sit on the main supply line itself and can provide better performance and power quality, being common in higher power or more demanding applications.

onsemi's long-term expertise and leading role in power management and conversion helps customers across the globe develop uninterruptible power supply (UPS) systems at the cutting edge of technology, maximizing power quality and reliability to the loads while reducing cost of ownership. Our Silicon Carbide (SiC), SiC/Si hybrid and IGBT module technology, as well as our broad offering of advanced discrete SiC MOSFETs, IGBTs and mid-voltage SJ MOSFETs, together with versatile gate driver, power conversion, sensing and protection ICs families help address the diverse requirements of low, medium, and high power uninterruptible power supply (UPS) designs.

Block Diagram

Evaluation/Development Kits

Evaluation Boards

Three-phase On Board Charger (OBC) PFC-LLC Platform

The SEC-3PH-11-OBC-EVB is a three-phase On Board Charger (OBC) platform achieving state-of-the-art system efficiency with AEC-Q Silicon Carbide (SiC) power devices and drivers.

Gate Drivers Plug-and-Play Ecosystem

The gate driver plug-and-play ecosystem allows for the comparison of the dynamic performance and capabilities of different gate drivers and technologies, such as for example NCD57XXX, NCP51561 or NCP51530.

Technical Documents

Demystifying Three-Phase PFC Topologies

This application note takes a holistic look at the Fast DC EV Charging space. It presents the market and its dynamics and touches on the types of charging, on the typical voltage and power levels and on existing standards.

Performance Comparison of 1200 V SiC MOSFET and Si IGBT

This application note compares the performance of two power integrated modules (PIMs) in the boost stage of an 1100 V solar inverter.