PSK5A20-7

Voltage - Output 3:	--
Approvals:	cCSAus, CE
Size / Dimension:	6.73" L x 4.37" W x 3.15" H (171.0mm x 111.0mm x 80.0mm)
Mounting Type:	Chassis Mount
Operating Temperature:	-25°C ~ 71°C
Efficiency:	79%
Applications:	ITE (Commercial), Railway
Power (Watts):	102W
Current - Output (Max):	20A
Voltage - Output 4:	--
Series:	Melcher PSK
Voltage - Output 2:	--
Voltage - Output 1:	5.1V
Number of Outputs:	1
Voltage - Input (Max):	80V
Voltage - Input (Min):	8V
Type:	Enclosed, Conformal Coated
Part Status:	Active
Packaging:	Bulk

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DC DC Converters – PSK5A20-7 Application Field and Working Principle

DC/DC converters are a type of electrical component which can convert a direct current (DC) signal into a higher or lower-voltage signal. The PSK5A20-7 DC/DC converter is a switching converter which is used for intermediate bus voltage regulation and DC-DC conversion.The PSK5A20-7 is an integrated converter manufactured by MEAN WELL, a Taiwan-based provider of power supplies and DC-DC converters. This converter is typical in many applications, due to its high efficiency of up to 91%, low harmonic distortion of less than 0.12%, and low no-load input power of less than 250 mW.

Application Field

The PSK5A20-7 is a universal AC/DC switching power supply device. It can be used in a wide range of applications serviced by 6V-15V output, such as industrial automation, LED lighting, communication, computer equipment, and ICT.

Working Principle

The PSK5A20-7 is a switching converter, its input supplies power from an AC mains source. From the AC mains source, the converter reduces the input voltage to a level suitable for the downstream load. Then the power is further rectified, filtered, and regulated to stablize the output voltage.The PSK5A20-7 has an additional benefit of being a programmable converter. It provides users with the capability to customise the output voltage level according to their specific needs.The working of the PSK5A20-7 is based on two fundamental switching operations. The first stage is the buck conversion, where the converter steps down the input voltage to a required level. The second stage is a boost conversion, where the voltage is increased for output regulation and precise voltage settings.In the buck conversion stage, the converter ties the source voltage to the gate at zero and negative peaks of the input voltage waveform. This leads to a constant charge current flowing into the output for a given input voltage and load. Then, the converter\'s internal PWM control circuitry regulates the converter output voltage relative to the chopper circuit and source voltage.In the boost conversion stage, the PSK5A20-7 synchronizes the switching time for the inductor current. The maximum output voltage typically occurs when the inductor has been fully charged, and so the output voltage is kept stable throughout the load range.The PSK5A20-7 DC/DC converter is a reliable, high performance, and efficient power conversion device. It is widely used in many projects and offers great flexibility in voltage adjustment and regulation.

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