V28C24H100B3

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DC DC Converters

DC-DC converters are power electronic devices used for converting an input voltage of one level toanother voltage level. DC-DC converters can be broadly classified into two categories, namely isolated andnon-isolated.

An isolated DC-DC converter is a type of DC-DC converter that requires a number of galvanic isolations betweenthe input and the output. This allows for various applications such as battery charging, digital signal isolation,ground loop prevention and galvanic isolation. The galvanic isolation generally prevents high voltage spikes fromreaching the output and damaging sensitive circuit components or causing safety hazards. Isolation can be providedusing transformers, optical isolation or pulse width modulation (PWM).

A non-isolated DC-DC converter is a type of DC-DC converter that does not require galvanic isolations between theinput and the output. Non-isolated converters are typically lower in cost than their isolated counterparts and donot require additional circuitry for isolation. These types of converters are commonly used in automotiveapplications, computer systems and industrial process instrumentation. They are also used in applications wherea robust regulation is required.

V28C24H100B3 Application Field and Working Principle

The V28C24H100B3 DC-DC converter is a non-isolated, continuous and adjustable DC-DC converterdesigned for 24 VDC input and up to 28 VDC output. It provides up to 100W output power and offers a wide rangeof output voltages, making it ideal for applications such as industrial equipment, communication systems, IT equip-ment, medical equipment and automotive systems. It also features a high efficiency of up to 95%.

The converter operates by controlling the switch-on time of an internally integrated MOSFET switch. A feedbacksignal from the output stage is an important part of the control loop. This feedback signal is compared to thereference set point to adjust the MOSFET switching time. The A/D converter compares the output voltage of theconverter to the set point and then adjusts the switching frequency to obtain the desired output voltage. Thiscontrol loop ensures that the output voltage is maintained at the desired level.

The converter features under-voltage lockout (UVLO) and over-voltage protection (OVP) with hysteretic opera-tion for enhanced reliability. It is also equipped with thermal protection (OTP) circuit which shuts down the outputstage if the internal temperature reaches a critical level. The V28C24H100B3 also features a high reliability with abuilt-in maximum duty cycle limiter.

In summary, the V28C24H100B3 is a non-isolated DC-DC converter that provides 24V input and up to 100Woutput. It is designed to offer a wide range of output voltages and has a high efficiency of up to 95%. The converterfeatures under-voltage lockout, over-voltage protection, thermal protection and a built-in maximum duty cyclelimiter, making it an ideal choice for applications such as industrial equipment, communication systems and evenautomotive systems.

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