Forum Post: UCC28950 / Changing switching frequency
Hi,I'd like to have an advice about UCC28950.My customer designed a board and evaluating UCC28950.He is concerning about switching loss.He thinks switch timing of FET is good in a wide load range...
View ArticleForum Post: RE: BQ24002PWP Single Li-ion battery charging circuits component...
Thanks for your reply, but circuit is not working.I have tested the circuit & found that, the load take 90mA current for first few second, after that it takes 400mA current for 3-4 Second &...
View ArticleForum Post: Suitable Gas gauge IC for LiFePo4 6.6v 9.6A battery pack
hello,i have been using Lifepo4 chemistry 6.4V,9.6A battery pack, which is 2S3P configuration each with 3.2V 3.2A batteries.please suggest us the suitable batter fuel gauge IC.Thanks and RegardsSantosh
View ArticleForum Post: RE: Output Ramp time and sequence for LP3891EMR-1.2
Thank you Donald.Regards,Sameer.
View ArticleForum Post: Functional Replacement for bq78PL116
Hi~I know that status of bq78PL116 is NRND.Please recommend replacement part as function.
View ArticleForum Post: TPS65051-Q1 Q100 test report
Dear support team,Is there any Q100 test report that we can share with customer for reference? The datasheet stated the Q100 spec below:AEC-Q100 Qualified With the Following Results:– Device...
View ArticleForum Post: If TPS23754 can power up to 33W??
Dear SirGood days,May we check if TPS23754 can power up to 33W(12V/2.75A)??due to spec show power up to 30W.If yes, may we direct use TPS23754EVM-383 to driver, is any thing to change?...
View ArticleForum Post: RE: Help with programmable LM317 circuit problem
Thanks for the reply Donald. I looked around and found that R5 (100Ohm) was high impedance. Strange. I don't think it could have blown in-circuit as the Op-Amp is limited to 30mA output. Anyway, I...
View ArticleForum Post: LP2953 pspice model
I'm looking for a pspice model of voltage regulator LP2953. I suppose it's difficult to find, so... Anyone can provide me with a reliable home made model or any advice to create a simplified one?
View ArticleForum Post: RE: TPS65930 USB port in Host mode with VBUS current higher than...
Yes, it might damage PMIC. Unfortunately we could not turn off the internal charge pump using SW. Though you do it through registers, it is getting enabled back.To solve this issue we connected diode...
View ArticleForum Post: RE: BQ24650 6mA discharge current issue
Hello!Basically, I have the same critical mind. And, I'm suspecting "battery detection feature".Thank you.
View ArticleForum Post: RE: TPS54394 unsed power good pin
I have not tried that. I would suggest that they just de-populate the capacitor for TPS65394 design. They will need a pull up for the PG signal though. See the EVM users guide to see how we...
View ArticleForum Post: RE: TPS5420 EN pin problem
Did you ever get your circuit to work? Let me know if you need further assistance.
View ArticleForum Post: RE: Startup problem with TPS54525
did you ever resolve your issue? Let me know if you need further assistance.
View ArticleForum Post: RE: TPS40304 Soft Start Feature
Hi Adam,Sorry for the confusion. You are right that the pull-up current from BP to EN/SS with the existence of FSS resistor will lead to shorter soft-start time. When the input voltage is above 6.5V,...
View ArticleForum Post: RE: Help with programmable LM317 circuit problem
Personally, I would leave the 100 ohms in. Base drive will be microamps so there is no real downside.
View ArticleForum Post: Related to SPICE model of UCC28019A controller
Hi, Can anyone help me about the SPICE model of UCC28019A ( DSN file). which software can i use to open this file. I have tried to open by Proteus software and it shown message the file is...
View ArticleForum Post: RE: bq20z65 Version
Hi Alex,Can you extract a .senc file so we can actually determine what chip version you are on.You can select the v1.05 target and then go straight to Pro screen. Put device in ROM and read out the...
View ArticleForum Post: RE: CSD18532Q5B Rise & Fall Time
Niyant, Before I tell you something incorrect, I want to check with the expert who writes our spice models. He is out on leave but should be back Monday. I will try to get you some feedback then.
View ArticleForum Post: RE: bq24072TRGTT block not works att all
Hi Jeff,I made all changes,Removed R7 R8=10KR3=0 Still Vin = 5V (USB input) , Pins 2,3 =, 3,7V (connected to battery) , Pins 10,11 = 0 VWhat's the problem ?ThanksHaim
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