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Hi,
I've used the BQ24074 and I'd be grateful if someone could take a look at my schematic to see if there's anything that looks incorrect.
I've read the documentation available on the product page but I cannot see a guide which shows how best to hook this up to a USB-C port to esure adequate input transient voltage protection
My schematic looks like this at the moment,
I also want to be resiliant to faulty USB power supplies that have higher than expected voltages and lack current limiting. So I've used a PTC with 100A transient rating ahead of the TVS1401. It's based on an example in a Littelfuse USB design guide. I believe this provides adequate transient voltage surge protection and will also cut the input if the voltage is too high or inverted.
Any help is greatly appreciated,
Kind regards,
-Jason
Hi Jason,
I took a look at your schematic and I believe this looks good. No problems seen on my end regarding the TVS and the fuse.
I did notice that you mention that the 4V4 rail powers a beeper and a vibration motor. Is the current load + the battery going to exceed the 160 mA current that is set by the fuse?
Best Regards,
Anthony Pham
Great, thank you, that's a relief!
I really appreciate your help.
Kind regards,
-Jason