PFC375-4000G

Current - Output (Max):	40A, 10A, 6A, 3A
Approvals:	CE
Minimum Load Required:	Yes
Mounting Type:	Chassis Mount
Features:	Adjustable Output, Load Sharing, PFC, Remote Sense, Universal Input
Operating Temperature:	0°C ~ 70°C (With Derating)
Efficiency:	68%
Voltage - Isolation:	2.6kV
Applications:	ITE (Commercial)
Power (Watts):	375W
Series:	PFC375
Voltage - Output 4:	5V
Voltage - Output 3:	12V
Voltage - Output 2:	12V
Voltage - Output 1:	5V
Voltage - Input:	85 ~ 264 VAC
Number of Outputs:	4
Type:	Enclosed
Part Status:	Active

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AC DC Converters: PFC 375-4000G

Power factor correction (PFC) components are widely used in power electronics applications. The PFC 375-4000G is an example of a modular AC-DC converter designed for industrial and medical applications. This article will discuss the application field and working principle of the device, and place it within the wider context of AC-DC converters in general. The PFC 375-4000G is a single-phase AC-DC converter designed to provide a regulated DC output voltage of 375 Watts. This device is suitable for industrial applications, such as lighting, power tools, motors and pumps, as well as medical applications such as medical devices, monitors and laboratory equipment. It features an internal PFC circuit and a built-in EMI filter to ensure that compliant levels of conducted EMI are maintained.The PFC 375-4000G’s internal PFC circuit is designed to correct the power factor of the input voltage, ensuring that the amount of energy supplied to the device is more efficiently used. This component also features built-in over-voltage, over-current and short-circuit protection systems in order to guarantee safe operation. The device’s working principle relies on two main stages. The first stage comprises two AC-DC conversion stages. During this stage, a rectifier diode converts the incoming single-phase alternating current (AC) to direct current (DC). The two stages ensure that the voltage is regulated and that the power factor is corrected. The second stage consists of a DC-DC regulating circuit, which provides the output voltage at a constant value. The diode-bridge controlled AC-DC sections include predictive current limitation (PCL) and a high-frequency (HF) control loop. The PCL limits the output current in the event of an over-load or short-circuit. The HF control loop ensures that the output voltage is precisely regulated. The DC-DC regulating stage includes a switching control topology, allowing a highly efficient power conversion.The PFC 375-4000G is an example of how AC-DC converters can be used in a variety of industrial and medical applications. This device is designed to provide highly efficient, accurate and reliable power with built-in safety systems to ensure safe operation. By combining a PFC circuit with two AC-DC conversion stages and a DC-DC regulating stage, the device is able to provide a constant and regulated output voltage. This ensures that the amount of energy being used is optimised, making the PFC 375-4000G an ideal AC-DC converter for industrial and medical applications.

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