Diodes - Rectifiers - Single: VB20100S-E3/8W application field and working principle

Introduction

VB20100S-E3/8W is part of the single rectifier range from VISHAY. The device is especially suitable for use as a freewheeling diode in switch mode applications up to 8W, including switch mode power supplies and motor drives. The main features of VB20100S-E3/8W are low forward voltage drop, fast response times and long-term stability.

Application Field

• Ideal for use in modern motor drives
• Ideal for use in switch mode power supplies
• Ideal for use in circuits which require fast switching

Working Principle

VB20100S-E3/8W is a high performance single rectifier. The single rectifier is a two-terminal semiconductor device which has the dual functions of rectification and regulation and is capable of operating at very high voltage, temperature and frequency. It has two principal functions, one of which is to act as a rectifier, recovering energy from alternating current, and the other of which is to act as a regulator, decreasing the amplitude of an output voltage.

VB20100S-E3/8W works by preventing the flow of current in one direction, allowing it to flow in the other direction. This is called rectification and is achieved by the use of a series of alternating forward-biased and reverse-biased diodes. When the forward-biased diode conducts current, the voltage across the load decreases and the current in the circuit decreases. When the reverse-biased diode conducts current, the voltage across the load remains constant. This process allows energy to be recovered from alternating current.

VB20100S-E3/8W also acts as a regulator. As the temperature of the environment increases, the voltage drop across the diode decreases. This decreases the output voltage, effectively creating a voltage regulator.

Conclusion

VB20100S-E3/8W is an ideal choice for switch mode power supplies and motor drives due to its low forward voltage drop, fast response times and long-term stability. The single rectifier has the dual functions of rectification of recovering energy from alternating current and regulation of decreasing the amplitude of an output voltage, making it a highly efficient and reliable device.