Thanks for making this video so comprehensible.

Ah this is great, exactly what I was after for my current project. Thank you! Subscribed of course.

Bro, I love it how simple you explained it. Thanks!!

Your videos are awesome, make some on low power design, microcontroller boards, how to choose and interface to program a board mcu(jtag, uart, swdio etc..) all important for IOT stuff

Just what I was looking for, great content.

Interesting video! One thing I would add to the circuit though, is a 1k resistor connected to the gate of the MOSFET for more reliability. Here is why: "All MOSFET devices are extremely susceptible to gate oxide breakdown, caused by electrostatic discharge. Unlike JFETs or other junction devices, in which the junction avalanche current can safely discharge the overvoltage, MOSFETs are damaged irreversibly by a single instance of gate breakdown. For this reason, it’s a good idea to use a series gate resistor of 1k or so (assuming that speed is not an issue), particularly when the gate signal comes from another circuit board. This greatly reduces the chances of damage; it also prevents circuit loading if the gate is damaged, because the most common symptom of a damage MOSFET is a substantial dc gate current. . . . The series gate resistor, although not essential, is a good idea, because MOSFET drain-gate capacitance can couple the load’s inductive transients back to the delicate CMOS logic" (Paul Horowitz and Winfield Hill, The Art of Electronics, 3rd Edition, pg. 193, 199.)

Great! Thank you for your videos!

Thank you so much, your way to deliver the informaion way smooth it helped me alot.

keep doing your work it's really helping a lot :D

Super informative; great work!

Good tutorial. Thank you!

amazing explanation, 🎉 very very simple to understand, thank you and I hope I could see more videos ... 👍

Thank you so much for your videos, they are very useful! Just one little thing! (and correct me if I am wrong) The TPS61200DRC is the adjustable output version (5V fixed output = TPS61202DRC), so that means this one requires a voltage divider to provide 5V output. But again, thank you!

I like your logic. Thanks for sharing. Geat teaching skils.

I like your videos, thanks for sharing!

Awesome!! Thank you.

Great video ! I like the way you go back over the logic of the whole system, at the end. Suggestion: Could you add few words on why you did choose those component in particular (tradeoff) ? Thank, I appreciate this series.

Definitely learning more with you. 👌

Fantastic Bro...

To build on this, I would love to see a charging circuit that uses a solar panel. How to charge a lipo and have the circuit function at the same time. Thanks for your videos, well done!

Thanks for this great video. You make it look simple.- Subbed!

Thank you. I would like to power with the same type of circuit my RaspberrypiZeroW with radio breakout module. Is it possible to charge and use with 1200 mAh or higher Polymer Lithium Ion Battery? And can we get battery state with this circuit? I would prefer to see more continued with the PCB design part.

def using this for a design im working on thanks

Thank you!

If I were to want a 3s battery instead for example, would I have to basically copy and paste this X3, or would I have to change the values throughout the schematic to accommodate the 3 cells?

Great tutorial. I just don't understand how to choose the mosfet and the schottky diode. Can you please help on that?

Is there a way to make that usb port have both roles (source and sink current)? The idea is that you can charge the battery from it, but also use it to charge other things as well? I know there are USB PD chips out there that can negotiate dual role, but is it possible to do it straight from the VBus without introducing USB protocols? So far I can imagine using a SPST switch to accomplish this but is there a simple way to detect if its plugged into a source vs. a sink?

Really helpful thanks :)

Great! Do you have an ananalysis design for cut off a 2s lipo? I want to plug light on lipo and protect the btry. Design with zener diode is possible?

❤ for that effort

Fantastic !!!

From turkey. Perfect 👋👍

If you would want to have 3.3V out, could to feed the output of the mosfet into the buck converter?

Hi MicroType Eng. I have a question. Let's say I need 6V in output (setting the right FB resistors voltage divider), either when battery powered or usb powered; would it be a problem to just connect the output of the schotty diode in input to the TPS61200? Or would be a problem, when the USB is connected, to have Vdrain=5V > Vgate=Vbattery=3.7V??

Excellent video. How would you recommend using 4 x 18650 for 5V output? Would 4 in parallel with the boost converter be better than 2 parallel, 2 series with a buck converter? If so, what changes to the charging circuit are needed for a single USB-C 5V supply? Looking to drive 1A @ 5V for as long as possible. Thanks!

Is having 5v on the VOUT pin of the TPS61200DRC when its off going to be a problem? Would another schottky on the VOUT pin be a safer to not damage the IC?

When main power is available, Does the main power go into the boost converter back from Vout pin? is any problem or affect the circuit, or need there any also reverse diode after Vout to Load, to protect from back current...Thanks in advance

First? Nice video once again. In my opinion you don't need the background music. In fact I think it's distracting but whatever :)

Great video, I have a similar project now together with ESP32. I am curious if charging IC is enough to maintain overcharge/discharge of the battery

is input overvoltage protection needed for MCP73831 using tvs diode??

Good video. Engagement!

How I did not find this channel before

Love that ideal 🎉

I am designing a 48 v 72 amph charger will you tell me which MOSFET should be used and the EMI circuit also.

Please recommend something for high current applications...like 2A or 3A at 5v...

How will it work for 4.2V lipo battery?

suggestion for future videos a DC UPS power backup for raspberry

How many milliamps is the output? Nice video by the way :)

Great Video ! Is their a reason you went with a booster instead of a step-up IC ?

Could you please tell me the name of the program you worked on

Please make a video on how to simulate in KiCad

Thank you so much for creating such a useful video. I have a question, Can we use Enable PIN of buck boost converter to disable it when USB power is available, So instead of using PMOS to control the battery power fed to converter we can use enable PIN. Do you think about any downside for using this method?

Hi ……...how come your labels are not specified as inputs or outputs or even bidirectional does it not matter?.....for instance the 5v in this circuit is an output but the label seems counter intuitive?.....Ta!

There are dedicated ICs for this, aren't there?

So this is assuming that our inverter from the wall is outputting 5V right? Or else when we bypass the charging circuit, we would need to wire VBUS into the buck/boost converter input so it can regulate 5V out.

What are the characteristics of the MOSFET and the schottky diode? Which ones do you recommend for this circuit?

What would happen if it is plugged into a usb host with those d+ and d- pins tied together? Also shield should never get joined to the device ground. It’s tied at the host end to earth. If the device has a metal case the case should though.

Please correct me, if I'm wrong, but I think the drain of the Mosfet has to be connected to B+, NOT the source of the Mosfet!

Great video content but I found the music distracting as well. Thanks!

Does a Pchanel mosfet conduct without voltage at the gate?

Can I use this circuit to power a Raspberry Pi? When the Mosfet switchs, would the pi fail, because there were a short power failure?

CAN YOU EXPLAIN HOW SELECT COMPONENTS FOR THIS APLICATION

Hi, i love your videos! Could you make a tutorial on USB C Power delivery design? I'm struggling with it. Thank you! :)

P-FETs are uncommon. What part# did you use?

im one of the 19.9K sub :D

Last video link please🙏

5V is a bit low to be chopping .2 to .3V off with that Schottky. I would have used another FET.

how do i assign footprints easily

Expecting more basic vedios I means.. application and how to select components, and design tips

Since that is a p-mosfet, does it not require a pull up resistor instead of pull down so when it's plugged the mosfet will be off and when it's unplugged it s on ? I would love to understand.

1. How to add 2 pages in KiCAD Schematic ?(I'm using KiCAD 6.0 rc) 2. Can you start of with DDR Schematic and PCB Routing ? 3. PCB Antenna and Chip Antenna PCB Guidelines.

Correct me if I'm wrong, but I don't see an overcharging protection on this circuit/

Hi and thanks for the tutorial! I have designed a circuit based on your video but and I'm having a problem. It works fine but if I have both battery and USB connection and disconnect the USB cable, the battery power supply does not respond fast enough. In my case, the load is a raspberry pi and when I unplug the USB cable there is a strong momentarily voltage drop, which results in a reboot of the RPI. Any ideas on how to solve this problem?

Which Schottky diode model will be ok? Which parameters are important in this case?

Could you tell me please, what kind of MOSFET are you use in this circuits

How did you find a Depletion Type P Channel Mosfet?

Can I charge two batteries (18650) with a schematics equivalent with this one, by replacing the single-cell battery with two in 18650 in parallel?

thank u, name app working u?

Hi sir...new subscriber,..how about a 100 ampere circuit of lithium charger

Thought lifepo4 absolute minimum voltage limit was 2.5V ??

4:53 an inductor rated in F? Shouldn't that have been H? 5:29 Ah .. you found it 🙂

PMOS is placed backwards

Make more videos

4:45 - 2.2µF??? Surely it should be µH? 5:23 - Nevermind, as you were sir....

2.2uF for inductance!!!!!!!!!!!!!!!!!!!!!!!!!!

It is a auto cutoff circuit

Audio: please choose between (background) music and speech, but don't try to compete with the music by speaking. Just. Don't. Please.

Why are you talking so slow?