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adila
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hello..im final year student..i have some problem that i doesn't know how the first step to design the boost converter circuit which is step up the voltage from 5v reach at 24 volt..anybody can help me..
adila said:hello..im final year student..i have some problem that i doesn't know how the first step to design the boost converter circuit which is step up the voltage from 5v reach at 24 volt..anybody can help me..
Bob S said:There are circuits around that use the ubiquitous NE555 for boost converters. The 555 is a lot easier to find and a lot cheaper than the LT1170. You can find some 555 boost converter circuits on the web. The NE555 is a very versatile chip, and has been around since the early 1970's. Learn to use the 555. It will solve a lot of your circuit problems.
adila said:i already read the passage at wikipedia but I am still have no idea to start design the circuit..am i wrong if i used the LT1170 component to step up the voltage until 24v?This information i get from Linear Technologies data sheet.
adila said:yes..the data sheet only shown how to increase the output voltage to 12V..i just give the example to know whether LT1170 can be used or not instead to step the voltage into 24V..I'm so confusing right now..please help me..thanks everybody..
I modeled one in SPICE, and it worked OK, but there were some very disturbing overvoltage surges at turn-on. So, back to the LT1170 for now.berkeman said:I haven't seen that before, Bob. Is the feedback bang-bang? The OP probably should be looking at more traditional feedback loops, I would think...?
Bob S said:I modeled one in SPICE, and it worked OK, but there were some very disturbing overvoltage surges at turn-on. So, back to the LT1170 for now.
Bob S
Perhaps but I doubt this OP is a professional engineer planning to ship quantity 1000 of more units, so the cost of the parts of is trivial, and likely the value of his/her time is not. The LT1170 takes care of everything except the magnetics, caps, and power diode. More importantly, a very common first mistake in designing switchers is to underestimate parasitics when wiring or laying out the components, especially between the power switch and an external controller, so combining the two reduces the chance for a problem there.Bob S said:There are circuits around that use the ubiquitous NE555 for boost converters. The 555 is a lot easier to find and a lot cheaper than the LT1170. You can find some 555 boost converter circuits on the web. The NE555 is a very versatile chip, and has been around since the early 1970's. Learn to use the 555. It will solve a lot of your circuit problems.
mheslep said:Flyback rules, boost and buck drools.
Yep, minimum cost, most flexibility, least hassle.berkeman said:But when it comes to minimum cost for non-isolated converters...
A boost converter is a type of power supply circuit that converts a lower voltage input to a higher voltage output. It uses an inductor, a switch (usually a transistor), and a diode to store and release energy from the input source, resulting in a higher voltage output.
The efficiency of a boost converter can vary, but it is typically around 85-95%. This means that for every 100 watts of input power, the boost converter will output 85-95 watts of usable power.
When designing a boost converter, it is important to carefully select the inductor, transistor, and diode based on the desired input and output voltages, as well as the required current and efficiency. There are many online resources and calculators available to assist with this process.
Yes, boost converters can be used for high power applications. However, it is important to select components that can handle the required current and power, and to properly design the circuit to minimize losses and maximize efficiency.
When designing a boost converter, it is important to consider the input and output voltages, desired current and efficiency, choice of components, and circuit design to ensure proper functionality and reliability. Other factors to consider may include cost, size, and specific application requirements.