12v 2a dc to dc converter

Different types of converts are used to step up or step down the voltage which we will discuss in detail. Consider a desktop PC for an example.

Inside the cabinet, you can see several sub-circuits, each with its own voltage level requirement different from that supplied by the battery or an external supply. So you need a variable dc, and obviously it should be small yet efficient. Wind energy like airheads is unreliable and inconsistent…well unreliable is a bit too much…but it certainly is inconsistent!!! Since winds never flow at the same speed, the turbines also rotate at different speeds at different times.

Not only wind, almost all nonconventional energy sources like solar or tidal or hydel, etc. See, from small scale electronics like computers to large scale power plants, you use DC-DC converters.

TTL logics require 5 Volts and CMOS chips can work up to 15 volts, in such an integrated system a voltage converter circuit helps to avoid multiple power supplies. Similarly, high-end subs need higher volts all together can be managed with one power supply. For example, a TV set, contains all the above situations. DC to DC Converter has infinite uses, but some common uses are given below,. A boost converter step-up converter is a DC-to-DC power converter that steps up voltage while stepping down current from its input supply to its output load.

It is a class of switched-mode power supply SMPS containing at least two semiconductors a diode and a transistor and at least one energy storage element: a capacitor, inductor, or the two in combination. Power for the boost converter can come from any suitable DC source, such as batteries, solar panels, rectifiers, and DC generators. A boost converter is a DC to DC converter with an output voltage greater than the source voltage. Battery power systems often stack cells in series to achieve higher voltage.

However, sufficient stacking of cells is not possible in many high voltage applications due to lack of space. Boost converters can increase the voltage and reduce the number of cells. Two battery-powered applications that use boost converters are used in hybrid electric vehicles HEV and lighting systems.

A buck converter step-down converter is a DC-to-DC power converter that steps down voltage while stepping up current from its input supply to its output load. It is a class of switched-mode power supply SMPS typically containing at least two semiconductors a diode and a transistor, although modern buck converters frequently replace the diode with a second transistor used for synchronous rectification and at least one energy storage element, a capacitor, inductor, or the two in combination.

Switching converters such as buck converters provide much greater power efficiency as DC-to-DC converters than linear regulators, which are simpler circuits that lower voltages by dissipating power as heat but do not step up output current. The conceptual model of the buck converter is best understood in terms of the relation between the current and voltage of the inductor.

Beginning with the switch open off-state , the current in the circuit is zero. When the switch is first closed on-state , the current will begin to increase, and the inductor will produce an opposing voltage across its terminals in response to the changing current. This voltage drop counteracts the voltage of the source and therefore reduces the net voltage across the load.

Over time, the rate of change of current decreases, and the voltage across the inductor also then decreases, increasing the voltage at the load. During this time, the inductor stores energy in the form of a magnetic field. If the switch is opened while the current is still changing, then there will always be a voltage drop across the inductor, so the net voltage at the load will always be less than the input voltage source.

When the switch is opened again off-state , the voltage source will be removed from the circuit, and the current will decrease.

The decreasing current will produce a voltage drop across the inductor opposite to the drop at on-state , and now the inductor becomes a Current Source. This current, flowing while the input voltage source is disconnected, when concatenated with the current flowing during on-state, totals to current greater than the average input current being zero during off-state.

During the off-state, the inductor is discharging its stored energy into the rest of the circuit. If the switch is closed again before the inductor fully discharges on-state , the voltage at the load will always be greater than zero. The buck-boost converter is a type of DC-to-DC converter that has an output voltage magnitude that is either greater than or less than the input voltage magnitude.

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Seller assumes all responsibility for this listing. Item specifics. Input Voltage:. Output Voltage:. Shipping and handling. DC output current. DC output power. Operating temp. Connection terminals. DC-OK signal. Special application. It can contribute to system reliability and increase endurance in the event of voltage fluctuations.

The compact design allows installation in standard decentralized on-machine cabinets and saves plenty of space on the DIN-rail. The DC output voltage of a power supply can be affected by various factors such as wire size and length as well as electrical noise.

Especially in large applications, long wire lengths are a reality and are required to connect all the control equipment in the system. If this is combined with a small wire size the DC voltage loss can be substantial. This will possibly affect the connected loads.