Hello! I simulated the circuit you made (by using a square wave instead of the UC3843) to check the components choice. I noticed a big inrush current on startup, approximately 50A (you have very big caps) when the demand of current is high. How did you manage to reduce the inrush so it does not destroy the components? Secondly, can you upload the calculus you used for every components? On the TI datasheet components calculus are for a flyback SMPS, and whan i tried using general formulas (from Phil's labs) i had really bad results with a lot of ripples. I wouldlike to do the calculus by myself. Thank you!
usually, a boost converter is more noisy than a buck. check my latest video. although the current is low, it shows a square wave ripple. a 470uF input capacitor does not cause such an inrush
@@MyVanitar Well i guess that the inrush current depend on the ESR of the cap. What formula did you ude to calculate each components values like input and output cap, and inductance?
Thanks Reuben, in your case, the concept is identical. You can use the UC3842 and use a Mosfet with a higher Vds rate. if I remember correctly, the Schottky diode is fine, however, check the ratings of the diode as well. Finally, be careful about the rated voltages of the capacitors. Check the article as well. I have discussed some tips there as well. You can test this using TH components on a prototyping board and then go for a PCB.
Not mounting that massive heatsink to the PCB is stressing me the hell out. Hesam Moshiri why not make that PCB longer and just bolt it to the edge of that heatsink?
Daniel, this is not a final product. The heatsink is for demonstration purposes. by the way, if you don't bend the MOSFET and Schottky diode pins, you can mount the heatsink on the edge of the PCB, the way you like, however, my idea is to mount the heatsink at the bottom of the enclosure and fix it using a brace, long screws or something like that, and for this purpose, the heatsink should be fixed next to the PCB. so the board would be mounted a few millimeters above the bottom of the enclosure (using spacers) and the heatsink will be attached to the edge of the board. I think this makes sense in case of passing the vibration test. also, some users might use the metallic enclosure and screw the MOSFET and Schottky diode directly to the enclosure, as we can see in some commercial SMPS
@@MyVanitar It's a nice project! But the omission for mechanical stabilization for component leads is a big miss. I don't mind such transgressions for personal projects. But when it's put forth as an example for more junior engineers to learn, its 𝘀𝘂𝗽𝗲𝗿 𝗶𝗺𝗽𝗼𝗿𝘁𝗮𝗻𝘁 to not set forth such bad examples, whether they're implicit or explicit....
@@MyVanitar I have schematic diagram with UCx842, pin3 (Isense) connected to center pin of 5K trimpot other pin to ground and emitor of NPN transistor.
use an inductor with thicker wire, but the same inductance value. it will remain cool. for the shunt select a resistor with same value and package size, but more power rating
The only thing I can do for you is to try to build one in future. stay subscribed and watch all content from start to the end. it's not worse than social media or netflix, you learn something new
DC to DC Boost (Step up) Converter Circuit using UC3843
This vidio is very helpful sir can you tell me how can I increase ampare maximum 80 ampare needed
@@HasnainKhan-oi1gw you should use a Mosfet, a diode, and an inductor for your current range
Hello!
I simulated the circuit you made (by using a square wave instead of the UC3843) to check the components choice. I noticed a big inrush current on startup, approximately 50A (you have very big caps) when the demand of current is high. How did you manage to reduce the inrush so it does not destroy the components?
Secondly, can you upload the calculus you used for every components? On the TI datasheet components calculus are for a flyback SMPS, and whan i tried using general formulas (from Phil's labs) i had really bad results with a lot of ripples. I wouldlike to do the calculus by myself.
Thank you!
usually, a boost converter is more noisy than a buck. check my latest video. although the current is low, it shows a square wave ripple. a 470uF input capacitor does not cause such an inrush
@@MyVanitar Well i guess that the inrush current depend on the ESR of the cap. What formula did you ude to calculate each components values like input and output cap, and inductance?
Really neat video. How do I make one that can take 15-22V in and produce about 72V output at 0.5A current?
Thanks Reuben, in your case, the concept is identical. You can use the UC3842 and use a Mosfet with a higher Vds rate. if I remember correctly, the Schottky diode is fine, however, check the ratings of the diode as well. Finally, be careful about the rated voltages of the capacitors. Check the article as well. I have discussed some tips there as well. You can test this using TH components on a prototyping board and then go for a PCB.
Not mounting that massive heatsink to the PCB is stressing me the hell out. Hesam Moshiri why not make that PCB longer and just bolt it to the edge of that heatsink?
Daniel, this is not a final product. The heatsink is for demonstration purposes. by the way, if you don't bend the MOSFET and Schottky diode pins, you can mount the heatsink on the edge of the PCB, the way you like, however, my idea is to mount the heatsink at the bottom of the enclosure and fix it using a brace, long screws or something like that, and for this purpose, the heatsink should be fixed next to the PCB. so the board would be mounted a few millimeters above the bottom of the enclosure (using spacers) and the heatsink will be attached to the edge of the board. I think this makes sense in case of passing the vibration test. also, some users might use the metallic enclosure and screw the MOSFET and Schottky diode directly to the enclosure, as we can see in some commercial SMPS
@@MyVanitar It's a nice project! But the omission for mechanical stabilization for component leads is a big miss. I don't mind such transgressions for personal projects. But when it's put forth as an example for more junior engineers to learn, its 𝘀𝘂𝗽𝗲𝗿 𝗶𝗺𝗽𝗼𝗿𝘁𝗮𝗻𝘁 to not set forth such bad examples, whether they're implicit or explicit....
hi.Could you add the altium project files as a link?
Can we change R11 1K with 1K trimpot to adjust/limit current?
I could not get a proper current limit (CC) out of this chip
@@MyVanitar I have schematic diagram with UCx842, pin3 (Isense) connected to center pin of 5K trimpot other pin to ground and emitor of NPN transistor.
I have tested all of these. It is the "current limit", not the constant current as you might misunderstand these two. (test yourself)
@@MyVanitar Thank you....yes I have misunderstand👍🙏
Please can you make video on how to make oscilloscope current probe to visualise current waveform on dc dc converter
Thanks ❤
for AC currents you can use a current transformer, for both AC and DC currents you can use a Hal sensor
How to choose R10 and C8 value?
I chose them by testing and experimenting. Just use those values.
How much
How much is this board?
Sir circuit working super but inductor and shunt resistance get more heat😢
use an inductor with thicker wire, but the same inductance value. it will remain cool. for the shunt select a resistor with same value and package size, but more power rating
@@MyVanitar thanks for replying sir ..for inductor i use two nos 0.7mm thick wire
@@MyVanitar r increase the MOSFET adding parallel
Any suggestions sir
@@MyVanitar i use 1mm thick again inductor heating problem
Hi sir I want to make boost converter input 12 volt to 36 volt output 12 volt 50 to 60 ampare can u help me
The only thing I can do for you is to try to build one in future. stay subscribed and watch all content from start to the end. it's not worse than social media or netflix, you learn something new
SIR I WANT TO BATTERY12 VOLT CONVORT TO -12 +12 DUAL SUPPLY please guide me
I'll cover that sometime in the future, subscribe to get notified
Please upload video input 24v to 70v output 12v 10a step down.
Let's see.
I want busck booster sir
I will publish it soon in the future. subscribe!
Едрить у тебя пульсации на выходе..
boost converter is always noisy
How to make GSM based water pump controller using Arduino. Please help me
Shouldn't be difficult, use a GSM module!
@@MyVanitar but why
Can you explain
Please..
@@Saurabh_H_Yadav Why? what do you mean by "why?" using an available module is the easiest option
@@MyVanitar I mean please upload a new video on GSM based water pump controller using Arduino.
Please.....
Por favor dímelo en español
You can use the RUclips subtitles in Spanish
Fool
Cool or Fool?!
Coooooooool