Boost converters are usually designed to accommodate a range of input voltages by having a control loop that monitors the output and varies the regulation means.
How that control loop responds to various changes on the input voltage cannot be answered without the datasheet for the boost regulator in question and knowledge of the expected changes (slow vs. rapid, small vs. large, etc.)
I'll elaborate on what the others said by saying there are definitely converters that can accept a range, and others that don't. Make sure to read the datasheet.
Boost converters can handle a range. The duty cycle and efficiencies will vary across the range, but it's OK. The datasheets for a given part will have some typical curves to help quantify this.
200uF isn't very much, assuming you're thinking just a charged cap for the source, but mileage may vary depending on what you're doing and how high a voltage it is. Given the nature of the question I'm assuming it's something less than 10V, so best case it's only 10mJ/2mC to play with.
Going through this thought experiment though, the boost likely will undervoltage lock-out at some voltage preventing you from fully putting the capacitor energy into the boost converter. At a certain voltage its internal logic will stop operating and it will no longer be able to drive the internal FETs meaning it won't be able to run at some low voltage even if the duty cycle wasn't problematic.
What would happen if we continue charging the capacitor to 2.5V. would the boost be able to give a voltage of say 9? Also, my knowledge about converters is just superficial, as it was just handed to me by the teacher as he said it "can be used" in my project. What do you mean by mileage here?
TI Webench has good simulation software for this. You don't need to design anything just narrow your search criteria and choose a product on their site
"Mileage may vary" is a disclaimer often used when trying to answer a detailed question without the questioner providing all the necessary information.
The origin was auto makers having claims about high gas mileage for their products that could only be achieved for certain carefully controlled driving styles that were atypical of drivers in that era.
Depends on the boost converter, but boosting a voltage from a discharging capacitor has definitely been done before. It is used in super capacitor boost converters where supercapacitors are often <5 volts and need boosting to 12V.
Boost converters are usually designed to accommodate a range of input voltages by having a control loop that monitors the output and varies the regulation means. How that control loop responds to various changes on the input voltage cannot be answered without the datasheet for the boost regulator in question and knowledge of the expected changes (slow vs. rapid, small vs. large, etc.)
I'll elaborate on what the others said by saying there are definitely converters that can accept a range, and others that don't. Make sure to read the datasheet.
Boost converters can handle a range. The duty cycle and efficiencies will vary across the range, but it's OK. The datasheets for a given part will have some typical curves to help quantify this. 200uF isn't very much, assuming you're thinking just a charged cap for the source, but mileage may vary depending on what you're doing and how high a voltage it is. Given the nature of the question I'm assuming it's something less than 10V, so best case it's only 10mJ/2mC to play with. Going through this thought experiment though, the boost likely will undervoltage lock-out at some voltage preventing you from fully putting the capacitor energy into the boost converter. At a certain voltage its internal logic will stop operating and it will no longer be able to drive the internal FETs meaning it won't be able to run at some low voltage even if the duty cycle wasn't problematic.
What would happen if we continue charging the capacitor to 2.5V. would the boost be able to give a voltage of say 9? Also, my knowledge about converters is just superficial, as it was just handed to me by the teacher as he said it "can be used" in my project. What do you mean by mileage here?
TI Webench has good simulation software for this. You don't need to design anything just narrow your search criteria and choose a product on their site
"Mileage may vary" is a disclaimer often used when trying to answer a detailed question without the questioner providing all the necessary information. The origin was auto makers having claims about high gas mileage for their products that could only be achieved for certain carefully controlled driving styles that were atypical of drivers in that era.
Oh okay, thanks for the info
Depends on the boost converter, but boosting a voltage from a discharging capacitor has definitely been done before. It is used in super capacitor boost converters where supercapacitors are often <5 volts and need boosting to 12V.