The Boost Converter Circuit: A Detailed Review

Around 500 milliamps and by shorting the two diodes on the back we should be able to increase the charging current to 1 amp which was more like 700 milliamps at best. But nevertheless once 36 minutes has passed and the battery voltage reached 4 volts the charging process entered the constant voltage mode. After a total time of around 1 and a half hour and at a cut off voltage of 4.86 volts the green LED lighted up which means the charging process was done so all in all the constant current and voltage charging mode worked nicely only the charging current was a bit low.

Another useful feature is that when the micro USB cable is connected the Boost circuit automatically disconnects and the 5V output delivers the USB power but you should be careful when disconnecting the USB cable since it creates a small over voltage on the outputs. For the next tests I soldered the Li-ion battery wires due to safety reasons instead I connected my lap bench power supply to the battery input of the circuits since I can simulate different battery voltages with it and also set a current limit in case something goes wrong on the output side of the circuit.

Though I connected my DIY power logger and a potentiometer as the first loads to start the efficiency test I firstly utilized a battery voltage of 4.2 volts slowly increased the load on the outputs wrote down the output current SL power and the input power and repeated this process until I had four values then I changed the battery voltage to 3.7 volts repeated the measuring process and finally lowered the battery voltage to a low value of only 3 volts and obviously repeated the measuring process as well at this point the highest output current draw was only around 40 milliamps so to increase it up to the maximum claimed output current of 1 amp I removed the potentiometer and replaced it with a couple of different high power resistors.

Now while measuring the output and input power with those resistors the output voltage was pretty much constant at least until I used a 15 Ohm resistor this one drew 330 milliamps at 5 volts which seemed normal at first but once I lowered the input voltage down to the nominal voltage of the battery the output voltage collapsed which means that the maximum output current of the circuit is only around 300 milliamps and not one amp. Nevertheless, I then used the recorded values to create a chart which represents the efficiency over different output current draws.

The first thing to notice is that the higher the battery voltage is the higher the overall efficiency is next it's also mentionable that the maximum efficiency of 90.2% is reached at a current draw of 110 milliamps and the overall efficiency never folds below 83% which is actually pretty decent so all in all the Boost converter efficiency is fine but the maximum output current of only 300 milliamps is an issue now let's see at which point the output voltage cannot maintain the 5V outputs by slowly decreasing the input voltage as you can see at a voltage of around 2.6 volt the output voltage breaks down close to underneath the input voltage that basically means that there's no over discharged protection and the circuit will completely drain your battery if you're not careful.

Last but not least let's set a current limit of 2 amps at the input and short the output of the circuit as you can see here the output voltage breaks down but the short circuit current of 2 amps still flows which means that the circuit does not feature a short circuit protection either so let's come to a conclusion. The charging of the Li-ion battery works decently the Boost converter Works flawlessly as well but its maximum output current is pretty low but on the other hand due to its low quiescent input current of only 13 microamps my 1,100 mAh hour battery could power the circuit for 9.6 years. The only truly negative aspect of the circuit is that there's no over discharged and short circuit protection but if you're familiar with electronics then this should be a fair trade for such a cheap $2 board I hope you like this video If so don't forget to like share and subscribe feel free to write suggestions on what I should test next in the comment section and as always stay creative and I will see you next time.

WEBVTTKind: captionsLanguage: enlet's say you just created an awesome circuit that requires 5 volts to work properly and you want to make it portable the easiest way would be to use a small Lithium Polymer battery in combination with a boost converter to step up the 3.8 volts of the battery to a stable 5vt output but to prevent the battery from over discharge it is advisable to add a TP 4056 board between the battery and the Boost converter which also prevents the battery from short circuits and can even charge it up through the micro USB input only problem is that this setup is relatively big and thus not ideally suited for portable applications so it would be the best if we have one circuit which can charge up the battery protect it from over discharge and short circuits and boosts the voltage up to 5 volts a popular board type which can handle most of these jobs are the Ada of food power boosts but needless to say they are not the most budget friendly option luckily though I recently found those vmos D1 Mini battery Shields which can apparently charge up a lipo battery and boost its output up to 5 volts but since the data sheet of the main I the TP 4510 is only available in Chinese it is quite hard to grasp all the features the board offers so in this video let's do a couple of tests to determine all the available features of the board and measure the efficiency of the Boost converter let's get started first off I disol the pesia LiPo battery connector and directly sold the positive and negative wire of my battery to the appropriate terminals now Now by measuring the voltage at the 5V pin we can see that the circuit successfully boosts the voltage up to 5 volts without any problems so let's start the testing by using a 5vt power supply in order to charge up the battery to its charg and cut off voltage of 4.2 volts after plugging in the micro USB cable the red LED lights up and the battery gets charged up with a constant current of around 500 milliamps and by shorting the two sold the pets on the back we should be able to increase the charging current to 1 amp which was more like 700 milliamps at Best But nevertheless once 36 minutes has passed and the battery voltage reached 4 volts the charging process entered the constant voltage modes and after a total time of around 1 and 1 half hour and at a cut off voltage of 4.86 volts the green LED lighted up which means the charging process was done so all in all the constant current and voltage charging mode worked nicely only the charging current was a bit low another useful feature is that when the micro USB cable is connected the Boost circuit automatically disconnects and the 5 output delivers the USB power but you should be careful when disconnecting the USB cable since it creates a small over voltage on the outputs now for the next tests I solder the Lio battery wires due to safety reasons instead I connected my lap bench power supply to the battery input of the circuits since I can simulate different battery voltages with it and also set a current limit in case something goes wrong on the output side of the circuit though I connected my DIY power logger and a potentiometer as the first loads to start the efficiency test I firstly utilized a battery voltage of 4.2 volts slowly increased the load on the outputs wrote down the output current SL power and the input power and repeated this process until I had four values then I changed the battery voltage to 3.7 volts repeated the measuring process and finally low the battery voltage to ra low value of only 3 volts and obviously repeated the measuring process as well at this point the highest output current draw was only around 40 milliamps so to increase it up to the maximum claimed output current of 1 amp I removed the potentiometer and replaced it with a couple of different high power resistors now while measuring the output and input power with those resistors the output voltage was pretty much constant at least until I used a 15 Ohm resistor this one Drew 330 milliamps at 5 volts which seemed normal at first but once I lowered the input voltage down to the ninal voltage of the battery the output voltage collapsed which means that the maximum output current of the circuit is only around 300 milliamps and not one amp but nevertheless I then use the recorded values to create a chart which represents the efficiency over different output current draws the first thing to notice is that the higher the battery voltage is the higher the overall efficiency is next it is also mentionable that the maximum efficiency of 90.2% is reached at a current raw of 110 milliamps and the overall efficiency never folds below 83% which is actually pretty decent so all in all the Boost converter efficiency is fine but the maximum output current of only 300 milliamps is an isol now let's see at which point the output voltage cannot maintain the 5vt outputs by slowly decreasing the input voltage as you can see at at a voltage of around 2.6 volt the output voltage breaks down close to underneath the input voltage that basically means that there's no over discharged protection and the circuit will completely drain your battery if you're not careful last but not least let's set a current limit of 2 amps at the input and short the output of the circuit as you can see here the output voltage breaks down but the short circuit current of 2 amps still flows which means that the circuit does not feature a short circuit protection either so let's come to a conclusion the charging of the liut battery works decently the Boost converter Works flawlessly as well but its maximum output current is pretty low but on the other hand due to its low quiescent input current of only 13 microamps my 1,100 Milah hour battery could power the circuit for 9.6 years the only truly negative aspect of the circuit is that there's no over discharge and short circuit protection but if you're familiar with electronics then this should be a fair trade for such a cheap $2 board I hope you like this video If so don't forget to like share and subscribe feel free to write suggestions on what I should test next in the comment section and as always stay creative and I will see you next timelet's say you just created an awesome circuit that requires 5 volts to work properly and you want to make it portable the easiest way would be to use a small Lithium Polymer battery in combination with a boost converter to step up the 3.8 volts of the battery to a stable 5vt output but to prevent the battery from over discharge it is advisable to add a TP 4056 board between the battery and the Boost converter which also prevents the battery from short circuits and can even charge it up through the micro USB input only problem is that this setup is relatively big and thus not ideally suited for portable applications so it would be the best if we have one circuit which can charge up the battery protect it from over discharge and short circuits and boosts the voltage up to 5 volts a popular board type which can handle most of these jobs are the Ada of food power boosts but needless to say they are not the most budget friendly option luckily though I recently found those vmos D1 Mini battery Shields which can apparently charge up a lipo battery and boost its output up to 5 volts but since the data sheet of the main I the TP 4510 is only available in Chinese it is quite hard to grasp all the features the board offers so in this video let's do a couple of tests to determine all the available features of the board and measure the efficiency of the Boost converter let's get started first off I disol the pesia LiPo battery connector and directly sold the positive and negative wire of my battery to the appropriate terminals now Now by measuring the voltage at the 5V pin we can see that the circuit successfully boosts the voltage up to 5 volts without any problems so let's start the testing by using a 5vt power supply in order to charge up the battery to its charg and cut off voltage of 4.2 volts after plugging in the micro USB cable the red LED lights up and the battery gets charged up with a constant current of around 500 milliamps and by shorting the two sold the pets on the back we should be able to increase the charging current to 1 amp which was more like 700 milliamps at Best But nevertheless once 36 minutes has passed and the battery voltage reached 4 volts the charging process entered the constant voltage modes and after a total time of around 1 and 1 half hour and at a cut off voltage of 4.86 volts the green LED lighted up which means the charging process was done so all in all the constant current and voltage charging mode worked nicely only the charging current was a bit low another useful feature is that when the micro USB cable is connected the Boost circuit automatically disconnects and the 5 output delivers the USB power but you should be careful when disconnecting the USB cable since it creates a small over voltage on the outputs now for the next tests I solder the Lio battery wires due to safety reasons instead I connected my lap bench power supply to the battery input of the circuits since I can simulate different battery voltages with it and also set a current limit in case something goes wrong on the output side of the circuit though I connected my DIY power logger and a potentiometer as the first loads to start the efficiency test I firstly utilized a battery voltage of 4.2 volts slowly increased the load on the outputs wrote down the output current SL power and the input power and repeated this process until I had four values then I changed the battery voltage to 3.7 volts repeated the measuring process and finally low the battery voltage to ra low value of only 3 volts and obviously repeated the measuring process as well at this point the highest output current draw was only around 40 milliamps so to increase it up to the maximum claimed output current of 1 amp I removed the potentiometer and replaced it with a couple of different high power resistors now while measuring the output and input power with those resistors the output voltage was pretty much constant at least until I used a 15 Ohm resistor this one Drew 330 milliamps at 5 volts which seemed normal at first but once I lowered the input voltage down to the ninal voltage of the battery the output voltage collapsed which means that the maximum output current of the circuit is only around 300 milliamps and not one amp but nevertheless I then use the recorded values to create a chart which represents the efficiency over different output current draws the first thing to notice is that the higher the battery voltage is the higher the overall efficiency is next it is also mentionable that the maximum efficiency of 90.2% is reached at a current raw of 110 milliamps and the overall efficiency never folds below 83% which is actually pretty decent so all in all the Boost converter efficiency is fine but the maximum output current of only 300 milliamps is an isol now let's see at which point the output voltage cannot maintain the 5vt outputs by slowly decreasing the input voltage as you can see at at a voltage of around 2.6 volt the output voltage breaks down close to underneath the input voltage that basically means that there's no over discharged protection and the circuit will completely drain your battery if you're not careful last but not least let's set a current limit of 2 amps at the input and short the output of the circuit as you can see here the output voltage breaks down but the short circuit current of 2 amps still flows which means that the circuit does not feature a short circuit protection either so let's come to a conclusion the charging of the liut battery works decently the Boost converter Works flawlessly as well but its maximum output current is pretty low but on the other hand due to its low quiescent input current of only 13 microamps my 1,100 Milah hour battery could power the circuit for 9.6 years the only truly negative aspect of the circuit is that there's no over discharge and short circuit protection but if you're familiar with electronics then this should be a fair trade for such a cheap $2 board I hope you like this video If so don't forget to like share and subscribe feel free to write suggestions on what I should test next in the comment section and as always stay creative and I will see you next time