PSS249-7

Voltage - Output 3:	--
Approvals:	CE, cULus, EN, IEC
Size / Dimension:	6.73" L x 4.37" W x 2.36" H (171.0mm x 111.0mm x 60.0mm)
Mounting Type:	Chassis Mount
Operating Temperature:	-25°C ~ 71°C
Efficiency:	94%
Applications:	ITE (Commercial), Railway
Power (Watts):	216W
Current - Output (Max):	9A
Voltage - Output 4:	--
Series:	Melcher PSS
Voltage - Output 2:	--
Voltage - Output 1:	24V
Number of Outputs:	1
Voltage - Input (Max):	144V
Voltage - Input (Min):	31V
Type:	Enclosed, Conformal Coated
Part Status:	Active
Packaging:	Bulk

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DC-DC converters are electronic devices which convert direct current (DC) from a higher voltage to a lower voltage. In particular, the PSS249-7 is a regulated DC-DC converter designed to provide a regulated output voltage of up to 7V DC. It is typically used in a variety of applications, including providing a stable DC power supply for electronic devices, powering low-power DC motor drives, and creating adjustable voltage sources for testing and development.The PSS249-7 is a non-isolated buck converter, which means the input voltage and output voltage share a common ground. As such, the output voltage will never be greater than the input voltage, and the output current is limited to the amount of current that the converter can source from the input. The maximum output current is 2.5A, which is sufficient for most low-power applications.The PSS249-7 uses switching technology to convert the input voltage to the desired output. A control circuit monitors the output voltage and switches a series of transistors on and off as necessary to maintain a constant output voltage. The frequency of the switching is carefully controlled, typically in the range of 25 kHz to 100 kHz, in order to minimize noise. A low-pass filter is also used to filter out high-frequency switching noise.For most applications, the PSS249-7 requires a simple external wiring setup. In addition to the input power and output power, a pair of wires are used for configuration. The voltage sense pin is connected to the output voltage, so that the control circuit can accurately measure the output voltage and adjust the switching accordingly. The enable pin is then connected to a logic signal, such as from a pushbutton or other control device, in order to allow the output voltage to be enabled and disabled.The PSS249-7 is a versatile, reliable, and easy-to-use device for a wide range of applications. It is capable of providing a regulated output voltage of up to 7V DC, with a maximum output current of 2.5A. Thanks to its switching technology and internal filters, the PSS249-7 is very efficient and produces minimal noise. With its simple external wiring setup, the PSS249-7 is a reliable and cost-effective solution for many popular low-power applications.

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