JTL6048D12

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DC-DC converters are devices used to convert direct current from one voltage level to another. A common use of DC/DC converters is to convert 12V or 24V from an automobile electrical system into a stable 5V for powering sophisticated electronic circuits such as microprocessors. The JTL6048D12 is a DC/DC converter with features suitable for automotive engineering, industrial control, and other industrial applications.

The JTL6048D12 is a step-down converter featuring a wide input voltage range of 9V to 36V, an adjustable output voltage from 0.8V to 28V, and a current of up to 6A. It also includes an enable/shutdown feature that allows the output to be turned on and off remotely. The integrated EMI filter reduces EMI noise generated by the converter.

This DC/DC converter is built using a synchronous buck architecture, allowing it to keep its high efficiency (typically up to 93%) over a wide range of output currents. The operating frequency of the converter, which affects switching time and dynamic response, can be programmed by setting a single resistor. The converter also uses forward architecture, allowing it to support a high switching frequency and output ripple current.

The operating principle of the JTL6048D12 is based on the switching action between a control IC and an external MOSFET switch. When a pulse-width-modulated (PWM) signal is applied to the control IC, it switches the external MOSFET to control the voltage output. The operating frequency of the control IC can be adjusted by connecting a resistor between a selected pin and the ground. The input voltage is fed into the upper side of the MOSFET switch while the output voltage is taken from its lower side. The MOSFET switch is driven by the control IC in an accommodation with the resistance of the connected resistor.

The JTL6048D12 is able to withstand an operating temperature range of -40°C to +85°C. It has over-voltage protection, under-voltage protection, and over-current protection features. The device is also designed to meet CISPR25 Class 5 EMI requirements, making it suitable for industrial and automotive applications.

To sum up, the JTL6048D12 is a versatile DC/DC buck converter that can be used for applications ranging from automotive electronics to industrial control. It features a wide input voltage range, an adjustable output voltage, an integrated EMI filter, and an adjustable switching frequency. Additionally, it has over-voltage protection, under-voltage protection, over-current protection, and high input-to-output efficiency. Finally, it has been designed to meet CISPR25 Class 5 EMI requirements.

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