DHS250B15-T

Current - Output (Max):	16.5A
Supplier Device Package:	--
Size / Dimension:	2.40" L x 2.30" W x 0.50" H (61.0mm x 58.4mm x 12.7mm)
Package / Case:	8-DIP Module
Mounting Type:	Through Hole
Efficiency:	88%
Operating Temperature:	-40°C ~ 100°C (With Derating)
Features:	--
Applications:	ITE (Commercial)
Power (Watts):	248W
Series:	DHS
Voltage - Output 4:	--
Voltage - Output 3:	--
Voltage - Output 2:	--
Voltage - Output 1:	15V
Voltage - Input (Max):	400V
Voltage - Input (Min):	200V
Number of Outputs:	1
Type:	Isolated Module
Part Status:	Active

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DC-DC converters are widely used in many industries while they differ in terms of their application field and working principles. One excellent model is DHS250B15-T, which has a wide range of applications and is used by people all around the world. Let us dive into this article to understand its application fields and working principles.

Application Field

This DC-DC power module, DHS250B15-T, is designed for applications in automotive, industrial, and telecommunication. It features a very high efficiency of up to 97.5%, which helps to cut down the total cost of the system. Also, with an ultra-wide 4:1 input voltage range, it can work with an input voltage of 9.0V~36V, 12V~48V, 24V~72V or 36V~90V.Moreover, DHS250B15-T is designed to meet the high reliability demands for automotive and industrial use in order to ensure optimal safety and performance. It also includes temperature management features, such as over-temperature protection, enabling temperature sensing from -40c to 85c.Finally, this converter also provides a low solution costs with its built in components that include EMI filters, input under-voltage, output short-circuit, and over-voltage protection.

Working Principle

The working principle of DHS250B15-T is based on the buck topology. When the input voltage is higher than the output voltage, the buck-topology converter allows it to step down the voltage from a higher to lower voltage level. The DC power input enters the primary side of the DC-DC converter. A power switch, in normal practice an insulated gate bipolar transistor (IGBT), is then used to allow the power to enter the converter. When the power switch is open, no power will be allowed in. When the power switch closes, current will be allowed in and the power switch will transfer the input voltage from the primary to secondary side via inductor.The control circuit consists of a comparator, an error amplification circuit and a PWM filled circuit. The comparator detects the output voltage and compares with the reference voltage. If the output voltage is too low, the error amplifying circuit will amplify the error voltage and send a signal to the PWM drive circuit. The PWM circuit is then used to time the power switch, so as to control the output voltage of the converter.The output voltage can be adjusted by changing the duty cycle of the switching signals. The higher the duty cycle is, the higher the output voltage is since more energy is stored through the inductor. The DHS250B15-T offers adjustable output voltage magnitude features through the respective external resistor, making it easier to adjust the output voltage to a desired level.

Conclusion

To conclude, the DHS250B15-T is an excellent model of DC-DC power module due to its wide applications field and its great working principle. It has an ultra-wide input voltage with over temperature protection and its inductor works great when stepping down voltage. In addition, the adjustable output is very convenient and accurate. With such detailed feature set, it is no surprise that this model of converters is popular and is widely used in automotive, industrial, and telecommunication industries.

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