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BQ24090: BQ24090 Charging current is small.
Part Number:BQ24090hi Engineer:My circuit diagram is shown in the figure above.USB plug in to charge the battery.Testing 5V current is only 20mA.The battery is charging at a very slow rate.The current...
View ArticleBQ25505: Earth Battery Energy Harvesting
Part Number:BQ25505I am currently working on a project energy harvesting low level power from earth batteries and wondered if the BQ25505 would be the best part to use to boost the output levels?
View ArticleTPS55160-Q1: The land patterns of TPS55160-Q1
Part Number:TPS55160-Q1 HiMy customer ask for the recommending land patterns of TPS55160-Q1.Could you give me them?Best regards,Yokota
View ArticleTPS7A7100: TPS7A7100 input capacitor
Part Number:TPS7A7100I would like to use TI TPS7A7100 LDO, my question is regarding to the input capacitor, in the data sheet page 23 8.2.2.3 Input Capacitor Requirements it is recommended to use a...
View ArticleBQ24450: BQ24450 24V Lead Acid Battery charger circuit Resistors Value
Part Number:BQ24450I have a dilemma with input voltage. If I want to charge 2 lead acid batteries, external supply voltage must be greater than 29.6V (+/- temperature correction) and need to calculate...
View ArticleLM5150-Q1: Is LM5150 suit to replace MP3910 ?
Part Number:LM5150-Q1Hi Sir I use cross reference to search replace MP3910 parts. but there have suggest LM5150/LM5155/LM3478/LM3488 parts.May we know which one much suit to suggest?...
View ArticleUCC28063A: PF optimization for UCC28063A
Part Number:UCC28063AHi,We find UCC28063A solution PF is low, 1kW load PF is about 0.98, 500W load PF is 0.92, could you pls give some suggestion on how to improve PF? Thanks.
View ArticleTPS92690: May TPS92690 suit to replace MP3398?
Part Number:TPS92690Hi Sir we use cross reference to search MP3398 replace part. but there suggest TLC59208/TPS92641/TPS92690/TPIC2810/.... so on parts.May we know which one much suit to replace...
View ArticleUCC28950: UCC28950 dead time setting
Part Number:UCC28950Hi, team. It is nice to find you all here. I have one question about how to set the dead time of UCC28950. If we connect ADEL to GND, the minimum dead time set through DELAB and...
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LM5050-1: Wondering if Vgs voltage is too low
Part Number:LM5050-1Hi expert,My customer uses LM5050-1 in their USB-C / Adapter Oring application. And they tested on their mother board and result is shown below. We can know Vgs(Vgate-Vin) would be...
View ArticleTPS23751: the customer use TPS23751 in AT-type2, is it also can be backward...
Part Number:TPS23751Hi Sir The customer PD side power consumption max is 10W.They are no sure if they can use in AF PSE?AF37V-57V,because AF voltage is 37V-57V,and AT is42V-57V.the customer use...
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UCC28780: UCC28780 Startup transition
Part Number:UCC28780Hi,I have some question about the startup transition.In the datasheet page 27, during Vcst(SM1)=0.28V, the PWMH is disabled. So it means there will be no resonant current during...
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CCS/UCC21520: Drive power mosfet using UCC21520
Part Number:UCC21520Tool/software: Code Composer StudioHi everyone,I'm trying to do a H-bridge using UCC21520 and power IGBT STGWA19NC60HD VDSmax 600V -> datasheet.There is my schematic following...
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TPS2493: protection issues
Part Number:TPS2493Hello, the problem description is as following, 1. R238=9.09K, R237=15K, R235=10mΩ，current limit = 5A, when the output is shorted, the protection is ok, but when output is...
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LM5176: LM5176 no load power power consumption
Part Number:LM5176Hi Sir,Our customer used the LM5176, they are think power consumption too high in no load condition.We are check TI LM5176EVM If Vout=12V no load condition input have...
View ArticleTPS543C20: Output Voltage Adjust
Part Number:TPS543C20Hi Experts,Recently my important customer was testing TPS543C20 and they wanted to adjust output voltage of our EVM to be larger than 0.9V.Regarding to feedback resistor divider,...
View ArticleLM25066: Can VAUX pin be left floating when unused?
Part Number:LM25066Dear Sirs or Madams,When the voltage telemetry function of VAUX pin is NOT used, can the VAUX pin be left floating?Or, does VAUX pin has to be connected to GND when the voltage...
View ArticlePTV08T250W: Difference between PTV08T250WAD and PTV08T250WAH
Part Number:PTV08T250WHI team,What is the difference between PTV08T250WAD and PTV08T250WAH?Both RoHS status are the same as in-work.
View ArticleTPS55340: LCD flickering
Part Number:TPS55340Hi, I have used TPS55340PWP for providing LCD back light i.e; 12V DC , 1A and the input voltage is 5V. I had already implemented this design earlier for the same LCD and it worked...
View ArticleBQ24171: After OVP/ OCP protection
Part Number:BQ24171Hi,Could you please let me know the operation after OVP and OCP protection.OVP (Datasheet)9.3.17 Battery Overvoltage ProtectionThe converter will not allow the high-side FET to turn...
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