RFN2LAM4STR Discrete Semiconductor Products

The RFN2LAM4STR, otherwise known as the four-point compact rectifier, is an electronic device widely used in the electronics industry. It is designed to be a fast-switching diode with low forward voltage drop, capable of replacing four diodes in a single package. The RFN2LAM4STR is typically used for applications involving high-frequency switch-mode power supplies and rectified AC sources, providing fast recovery from overcurrent overloads. In this article, we will discuss the application field and Working principle of the RFN2LAM4STR.

Application Field

The RFN2LAM4STR is a wide-bandgap diode which is well suited for applications involving high-frequency switch-mode power supplies and rectified AC sources. It is mainly used in power conversion systems such as an AC-DC converter, DC-DC converter, and AC-AC converter. It is also suitable for other rectification applications such as spark protection and lightning surge protection. Additionally, the RFN2LAM4STR is suitable in frequency control applications as well due to its low switching frequency requirement.

The RFN2LAM4STR can also be used as a bridge rectifier, protection diode, or snubber diode. It is capable of efficiently rectifying AC signals with high voltage spikes, making it suitable for use as a surge suppressor. Finally, it can be used in mobile and automotive applications such as remote control systems, car alarms, and keyless entry systems.

Working Principle

The RFN2LAM4STR is a four-point compact rectifier with low forward voltage drop capable of operating at high temperature and high frequencies with low losses. It is composed of four rectifier legs in a planar structure with four anode and cathode terminals, providing a low On-resistance. The four rectifier legs switch between a forward biasing mode (high-side diode closed) and reverse bias mode (low-side diode closed). The switching behavior is determined by the relative positive and negative voltages at the terminals.

When the positive voltage is higher than the negative voltage the rectifier turns on the high-side diode and off the low-side diode, and reverse for negative voltage. This switching behavior reduces the voltage losses in the device by reducing the need for energy to switch between the two operating mode. In addition, the RFN2LAM4STR also provides an integrated body-diode which provides additional circuit protection when the main diodes are in the reverse bias mode. This integrated body-diode provides an additional path to ground or supply, depending on the direction of the current flow.

The RFN2LAM4STR also provides overcurrent protection of the connected components. The overcurrent protection is implemented by the device’s internal automatic frequency control and by controlling the current in the rectifier legs. When the current in the legs exceeds the maximum current, the device will switch the rectifier legs to a small current-limit mode, limiting the current and thus protecting the connected components.

In summary, the RFN2LAM4STR is a four-point compact rectifier with low forward voltage drop. It is suitable for applications involving high-frequency switch-mode power supplies and rectified AC sources. It is capable of efficiently rectifying AC signals with high voltage spikes, making it suitable for using as a surge suppressor as well. Finally, it also provides overcurrent protection for the connected components by controlling the current in the rectifier legs.