JHM1005D05

Current - Output (Max):	1A, 1A
Size / Dimension:	1.25" L x 0.80" W x 0.50" H (31.8mm x 20.3mm x 12.7mm)
Package / Case:	24-DIP Module, 9 Leads
Mounting Type:	Through Hole
Efficiency:	81.5%
Operating Temperature:	-40°C ~ 80°C
Features:	OCP, OVP, SCP, UVLO
Applications:	Medical
Voltage - Isolation:	4kV
Power (Watts):	10W
Series:	JHM
Voltage - Output 3:	--
Voltage - Output 2:	-5V
Voltage - Output 1:	5V
Voltage - Input (Max):	9V
Voltage - Input (Min):	4.5V
Number of Outputs:	2
Type:	Isolated Module
Part Status:	Active
Packaging:	Tube

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DC DC Converters

DC-DC converters are essential components which play an important role in modern electronic systems. They provide the necessary voltage and current conversion between the various power sources. In a DC-DC converter, the input voltage is rectified and converted into a regulated output voltage with suitable conversion stages. One such DC-DC converter is the JHM1005D05, which is designed for medium power applications. In this article, we will discuss the application field and working principle of the JHM1005D05.The JHM1005D05 is designed for medium power applications from 28V to 75V input. It has a 5V output and can deliver up to 5 amps. The input to output isolation is 2kV and the efficiency is approximately 90%. The converter is available in a variety of configurations to cater to various tasks such as buck/boost/buck-boost/semi-fixed configurations and is ideal for automotive, industrial and telecommunication applications.The working principle of the JHM1005D05 is based on switching operations between the input and the output. The converter module has two oscillators to control the switching operations of the MOSFETs. The first oscillator sets the switching frequency of the converter and the second one controls the duty cycle of the switching operation. The input voltage is rectified and filtered to the below 5V, which is then applied to the error amplifier. The error amplifier compares the input voltage with a reference voltage and determines the feedback required for the output voltage.The duty cycle of the first oscillator is adjusted using the output voltage regulated by the error amplifier. This adjusted duty cycle is then applied to the second oscillator to control the switching of the MOSFET transistors. When the switches are closed, the output load current flows through the inductor and the capacitor. When the switch opens, the load is supplied with current from the output capacitor, maintaining the regulated output voltage.The JHM1005D05 provides excellent performance and features a wide temperature range operation from -40 to 125°C. It also has a built-in 16-bit digital-to-analog converter for fine adjustment of the output voltage. The device features a synchronous rectifier to improve efficiency and also has built-in protection functions against under voltage, current limiting and over temperature.In conclusion, the JHM1005D05 is an excellent DC-DC converter which is designed for medium power applications. It is well-suited for automotive, industrial and telecommunication applications. The device can regulate the output voltage precisely and efficiently with its built-in digital-to-analog converter and synchronous rectifier. It also has built-in protection functions to ensure safe operation of the device at any given voltage, current and temperature.

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