In order to ensure the personal safety, in power supply system design, the isolation is very common. However, the existing power isolation design is often using discrete components, great influence on the size of the power system. To help customers develop more small size and high power supply system, Texas instruments (TI) launched high-speed MOSFET drive integrated isolation function, currently in Taiwan has positive locking server application clients such as power supply, electric locomotive.

Texas instruments Xiao Jin power management application manager huang pointed out that demand for density continued ascension of power systems, integrated isolation function solution requirements is bullish.

Texas instruments Xiao Jin power management application manager huang said, isolation of power supply system is indispensable mechanism to protect the safety of users, small chargers, to the mobile device to electric vehicles, motor drive applications such as kw level power supply system, all need to have the isolation design, user makes a touch there will be a risk of electric shock to the system.

In the past, however, the power supply isolation usually using discrete components to achieve, such as Transformer (Transformer) is one of them. But this kind of implementation method can obviously influence on the size of the power system, lead to the power density cannot ascend. Because of this, Texas instruments introduced integrated isolation MOSFET drive, and can support high switching speed, for the next generation gallium nitride (GaN) MOSFET establish ecological system.

Xiao Jin huang pointed out that the integrated function of isolation MOSFET drive, can significantly narrow the size of the power system, but how to ensure the consistency of the control signal to avoid affected by isolation function, is a major technical challenge. The company UCC21520 is a fortified isolation MOSFET drive, can meet the demand of industry common 5.7 kVrms isolation, but the company internal test results showed that the isolation maximum capacity can reach 12.8 kV.

The common mode transient overvoltage anti-jamming ability is more than 100 v (CMTI)/ns, propagation delay of 19 nanoseconds (ns), is currently the industry's fastest isolation MOSFET drive. In the aspect of application, the application of this device lock products include electric vehicles, telecom/server power such as power supply system.

Xiao Jin emperor revealed that there are many Taiwan server power industry made the cell samples, word of mouth reaction is good. The electric locomotive is its lock another ethnic group in the Taiwan market. Electric locomotive power itself is not low, and because the body volume more limited than electric cars, so the requirement of the power density is high.