ZWS30B3

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AC/DC converters are used in many different applications due to their benefits of providing long-term operations with high efficiency. One such type of AC/DC converter is the ZWS30B3, a step down AC/DC converter. It is a switch-mode power supply that is used to supply output powers from 24 to 36V DC. The ZWS30B3 is typically used in LED lighting, telecom, automation, industrial, and process control applications.

The ZWS30B3 AC/DC converter is a highly efficient solution that offers both cost and performance benefits. The converter is designed to meet MIL-STD-1399 and EN 61000-3-2 regulations, making it suitable for harsh environments. It has a wide operating temperature range of -40°C to +85°C and is RoHS compliant. Additionally, it includes active power factor correction (PFC) and standard protections for under-voltage lockout, over-voltage protection, overtemperature protection, and over-current protection.

The working principle of the ZWS30B3 is based on the flyback topology, which is a switched mode power supply that relies on inductive energy transfer. The primary side of the converter is powered from the AC line voltage and contains an input rectifier, a PFC boost converter, and a controller. The PFC boost converter takes the AC line voltage and rectifies and boosts it to the required output voltage. The boost converter is connected to the control circuitry and the output current is regulated by the feedback control loop.

The secondary side of the converter consists of an output rectifier and an output filter circuit. The main purpose of the output rectifier is to convert the AC voltage output of the transformer into DC voltage, which is sent to a load. The output filter circuit is used to reduce high-frequency ripple and noise to provide a clean DC output. The ZWS30B3 also includes an additional feature to enable Safe Torque Off (STO) functionality. This allows for the converter to be safely switched off in the event of an overload or fault.

The benefits of the ZWS30B3 AC/DC converter are numerous. It is an ideal solution for any application that requires a reliable and efficient power supply. It provides a high level of protection with its active PFC, under-voltage lockout, over-voltage protection, overtemperature protection, and over-current protection. Furthermore, its ability to provide Safe Torque Off (STO) functionality makes it a great choice for safety-critical applications. Overall, the ZWS30B3 is an excellent AC/DC converter that provides a high level of performance and reliability in a wide range of applications.

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