Uninterruptible power supply (UPS) is mainly composed of system 

batteries, the automatic transfer switch (ATS), the rectifier and the 

inverter.  It can provide continuous, stable, and uninterrupted power 

supply. It is an energy storage power supply and total  solution 

equipment.  It is widely applied in information, communication, power, 

finance, manufacturing, transportation, medical and health, construction, 

military, aerospace and other fields, and can be summarized into three 

major application areas: industrial equipment, communication base 

stations, and data centers. Digitization, high-frequency, and superior 

power efficiency have become the main technological development 

trends. Therefore, low power consumption and reliable switching devices 

will be the critical requirements for UPS application.

GOFORD has fully considered the requirements of higher switching frequency 

and higher efficiency for UPS applications, and adopts Super junction technology 

to develop a full series of 650V 11A~80A Super Junction MOSFET products. 

GOFORD is also developing 1200V 15-40A IGBT products, which have strong 

ruggedness and super low power loss；For bidirectional DC/DC circuits in UPS 

batteries, GOFORD can provide medium and low voltage MOSFET products with 

the voltage range of 30V~200V and the current range of 30A~150A, meeting the 

requirements of 12V -72V battery requirement.

Offline UPS - Low Frequency Transformer 

Offline (standby) UPS is mainly used in small offices and home offices. The 

capacity of offline UPS is usually less than 10kVA. This solution covers the 

major discrete power supply solutions, usually divided into two types of systems 

based on low-frequency transformers and high-frequency transformers. Its 

application scenario is that when there is voltage on the AC power line, the relay 

will bypass the inverter, while the inverter remains in a shutdown state. The battery 

charger is working to maintain a fully charged state. If the AC power supply stops, 

the relay will switch the UPS output to the inverter, which will start after a brief 

interruption of 10 to 20 milliseconds and provide backup power.