![]() ![]() Therefore, they are used whenever linear types are not an option. ![]() ![]() Since they’re more efficient, they do not generate as much heat and can be used to decrease and increase the output voltage. That is why engineers prefer using them in battery-powered devices. Their efficiency is much higher, compared to linear converters, and can reach 85-90%. The input voltage is applied in pulses, but the capacitor smoothes it. The number of these components and their arrangement can differ, affecting the converter’s work. Switching DC-DC converters consist of a power switch, conductor coil, diode, and a storage capacitor. The output voltage level is defined by the duty cycle of the switching element. This voltage is then smoothed with the capacitor and transferred to the load. Switching converters use a switching element that charges a storage capacitor with electrical pulses. Linear converters are typically used in audio and video electronics, communication equipment, medical and measurement devices. They are simple in design, use few components, and can save a lot of space (unless there’s a need to use a heat sink). Nevertheless, they are used in low-power devices and nodes that require high-quality output voltage and low output voltage ripple, or in devices that are sensitive to electromagnetic interference. On the other hand, this unused power dissipates as heat, and such models overheat easily if the input and output voltages differ greatly. As long as the device isn’t powered by batteries, this drop is irrelevant. Moreover, their efficiency drops as the difference between the input and output voltage rises. They can only be used to decrease voltage. Such circuits are quite simple and cheap but have a number of serious drawbacks. Linear DC-DC converters are the simplest converter types, as the voltage here is reduced with a transistor placed between the input and output. The input voltage is reduced by the voltage across the transistor, which causes the output voltage to drop. In a typical circuit of this type, the input and output are connected with a transistor (RVT1 in the picture below). Linear converters reduce output voltage with a resistive load. Common Types of DC-DC Converters Linear & Switching DC-DC Converters As an electronics developer, we also make full use of various DC-to-DC converters when designing power electronics, hardware, and robotics. According to EMR’s Global DC-DC Converter Market report, more than half of them are used in smartphones, but they have other applications as well: from consumer electronics and telecommunication equipment to industrial and medical equipment, factory automation, transportation, robotics, power electronics, etc. ![]() Such converters are used in many electronic devices. On top of that, in portable devices, they can raise voltage when the batteries are partially lowered, making power consumption more efficient. It also protects highly-sensitive sub-circuits. These circuits help distribute and manage power properly to provide each power consumer with appropriate voltage or current level. DC-to-DC converters are placed between the power source (an AC-to-DC converter in this case) and voltage consumers. For example, one of the purposes of car DC-DC converters is to regulate the voltage fluctuations in automotive alternators. Additionally, they stabilize voltages, not letting them drop or rise too much. However, if different sub-circuits require different voltages to work properly, one needs to convert the input voltage to a lower or higher level. In most cases, devices use only one power source. What are DC-DC converters and their functions?ĭC-to-DC converters are electromechanical devices or electronic circuits that convert one direct current voltage or current level to another. ![]()
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |