DQ7540-9R

Series:	Melcher Q
Packaging:	Bulk
Part Status:	Active
Type:	Enclosed, Conformal Coated
Voltage - Input (Min):	35V
Voltage - Input (Max):	75V
Number of Outputs:	2
Voltage - Output 1:	15V
Voltage - Output 2:	15V
Voltage - Output 3:	--
Voltage - Output 4:	--
Current - Output (Max):	4A, 4A
Power (Watts):	120W
Applications:	ITE (Commercial), Railway
Efficiency:	90.5%
Operating Temperature:	-40°C ~ 71°C
Mounting Type:	Chassis Mount
Size / Dimension:	9.09" L x 6.46" W x 0.78" H (231.0mm x 164.0mm x 19.8mm)
Approvals:	cCSAus, CE, TUV

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DC DC Converters

DC-DC converters (DC to DC converters) are electronic circuits or electromechanical devices that convert a direct current (DC) from one voltage level to another. It is a type of electric power converter. The main purpose of using a DC-DC converter is for voltage conversion, also known as voltage transformation. DC-DC converters are widely used in industrial, automotive, computing and other applications. One of the most common DC-DC converter used today is the DQ7540-9R.The DQ7540-9R is a DC-DC converter that provides an efficient way to convert a 12 volt direct current (DC) source into an isolated 3.3 volt DC output power source. This converter is especially useful for applications that require higher currents than what is available from a standard 3.3 volt regulator. It provides the user with a variety of features including a 12 to 24V input voltage range, 5A maximum output current, and an adjustable output voltage range of 1.3V to 16V. It also comes with built-in protection features, such as short-circuit, output overvoltage, and current limiting protection.The DQ7540-9R uses a non-isolated switching regulator design that makes use of pulse width modulation (PWM) to achieve the desired output voltage. PWM allows the output voltage to be controlled by altering the duty cycle of the switching regulator, which is the proportion of time that the output voltage is on and off. It is this method that allows the DQ7540-9R to achieve its high efficiency and excellent voltage regulation.The DQ7540-9R has a wide range of applications, including laptop computer power supplies, mobile phone chargers, and LCD monitor power supplies. It is ideal for powering low power applications such as audio amplifiers, low voltage regulated power supplies, and small electronic circuits. It is also well suited for applications where power consumption must be kept to a minimum, such as battery powered systems and electronic products with very limited power sources.The DQ7540-9R is easy to install and configure. It comes with a range of options and parameters that can be adjusted depending on the required specifications of the application. For example, parameters such as the maximum output voltage and current, minimum on/off time, and the current limit can be set to optimized performance.The DQ7540-9R can also be used to power a wide range of electronic devices. It is capable of providing a range of output powers that can cover almost any requirement. This makes it ideal for use in many different applications, such as automotive, industrial, and consumer electronics, where precise voltage control is necessary.In conclusion, the DQ7540-9R is a feature-rich DC-DC converter that provides a flexible and efficient means of powering a wide range of electronic devices. It is particularly suitable for powering low power applications where precision voltage regulation is necessary. It is easy to install and configure, and comes with a range of features that allow for optimization of performance for a specific application.

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