UFS550J/TR13

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Diodes are ubiquitous, yet they remain one of the least understood components. UFS550J/TR13 is one of a type of single-phase, zero-voltage-switched (ZVS) rectifier. It functions as a current rectifier, converting alternating current (AC) to direct current (DC), permitting a wide range of current flow in a small frame size. In this article, we take a look at the application field and the working principle of the UFS550J/TR13 rectifier diodes.

Application Field

UFS550J/TR13 is ideal for applications such as adjustableDC power supplies, DC motors, uninterruptible powersupplies (UPS), and air conditioners. It is designed for AC inputof 95~265 Vac, & peak rectified current of 5.5A. It is equipped withan Internal temperature sensor, offering an excellent thermalprotection, making it suitable for applications where safety againstoverheating is of utmost importance.

It also provides an outstanding ripple current product, allowing it to be usedin high frequency ac resonant applications. The combination between UFS550J/TR13 and high frequency capacitor wires, can result in a high current resonance module with reduced volume, enabling usage in high power applications that require compact size.

Working Principle

UFS550J/TR13 is a typical ZVS rectifier deal for applicationsrequiring high efficiency and low losses. Its working principlecomprises three stages:

1. Voltage-Switch Stage – Two MOSFETs and two Diodes areinterconnected to form a voltage switch, switching the outputvoltage from positive to negative in turn, such that the outputvoltage remains symmetrically zero across all phases.2. Resonance Stage – The voltage-switch operation reduces theconduction losses in this circuit, allowing a high power operationat medium frequencies. It uses a high frequency capacitor toachieve the resonant operation and minimize the charging time tothe load, leading to high efficiency.3. Rectification Stage – After the full wave rectification, theDC current is achieved, producing the desired output.The whole operation works in a balance state to guaranteea high efficiency and fast current charging to the load.

Conclusion

UFS550J/TR13 is a zero-voltage-switched rectifier diode idealfor DC power supplies, DC motors, and other applicationswhere fast charging and high efficiency are required. Itsunique design reduces losses and eliminates the need forexternal switches, allowing the user to work with mediumfrequencies, resulting in a high-performance rectifier diode.Although it is a simple device, UFS550J/TR13 hasrevolutionized the world of DC power supplies, and itsunprecedented efficiency has made it a staple for anyapplication where DC power is needed.

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