Forum Post: RE: LM3478 voltage characteristic (incl. oscilloscope pictures)
Hi Tommy,ok I got Rsense/sl, thank you.Since that is my last shot I will try to replace Rcomp and Ccomp as you suggested and otherwise design a PCB. If you could get the cad files that would help me a...
View ArticleForum Post: RE: Manufacturing process
In general we follow J-STD-020. The maximum allowed reflow temperature is stated on the Moisture Sensitivity Label (MSL).
View ArticleForum Post: RE: Current Source Like LM317 but with LDO device
ThanksI will not prefer switch regulator. Better LDO. Giovanni
View ArticleForum Post: RE: UCC2893 Active Clamp Forward Efficiency Problem ( 80%)
Guilherme,No other ideas at the moment.John
View ArticleForum Post: UCD9240 PMBUS problem - lost link
Hi,I have been developing an ADC board based on the design of Xilinx ML605 demo board. The power supply circuit is also nearly the same as ML605 using 2 UCD9240 with 5 PTD08A020W and 2 PTD08A015W.I...
View ArticleForum Post: RE: TPS65381 EVM?
Hi Paul, Two TPS65381EVMs are being shipped to you from Germany tomorrow, Feb 28, 2013. -Leonard
View ArticleForum Post: RE: bq20z95 PRES contact with 7V cause it report abnormal higher...
Simon,The absolute maximum voltage rating for the PRES/ input is 2.8V to 2.9V. The internal ESD structure will get damaged, if the input is connected to PACK+ voltage levels.RegardsTom
View ArticleForum Post: RE: Recommendation for a high voltage bias supply
I think using something a bit more contemporary would be a better starting point. Texas should have some appnotes for modest ~100V output boost circuits. Main difference between those and what you want...
View ArticleForum Post: RE: Automotive RTC switched power supply
Follow-up . . thinking you may need an auto-qual device (even though the TPS7A4901 is -40 to 125C), look at the TPS7A1601-Q1. It operates up to 60V, so your 60v wish is met, and, it has a very low Iq...
View ArticleForum Post: RE: BQ24075 dropout voltage
Or, since the BQ24075 output FET should be fully on in this situation, is the 300mV Vdo @ 1A simply due to an Rds on of 300mΩ? Then it would be simple to know Vdo for any situation...Thanks,Dave
View ArticleForum Post: bq77pl900evm-001 Gerber files
I need Gerber files for bq77pl900evm-001. I would appreciate help on locating these files if available.Thanks in advance for the help.Bruno
View ArticleForum Post: RE: Buck PSU with fsw = 600KHz
Hi.I already did a full backup of this thread, including pictures, links and files. If I have new doubts, I will open a specific thread for each one.This thread can be deleted.
View ArticleForum Post: RE: TPS65381-Q1 Samples Silicon Version
Hi Rustin, Not sure of the silicon rev pre-production to production, but I will check on this. Since this device is developed in Germany, it may take a day or two to verify. The only reason there...
View ArticleForum Post: bq27095 / Ron of FET connecting the battery to the system output
Hi,Can we know the Ron of FET connecting the battery to the system output? Our customer need to estimate the loss at the FET when powering system from battery.Best Regards,Sonoki / Japan Disty
View ArticleForum Post: RE: Materials Declaration PTH12050LAZT, PTH12020LAZT,...
Federico :The "WAZ" or any lead Free pin version requires minimum reflow temperatures on the pins/ components to be minimum 240°C with a maximum 260°C. The solder paste requirement on the mother board...
View ArticleForum Post: RE: LMZ10503 power sequencing
Hi Yang/AkshayThanks for the reply. Will vout1 be at 0V initially ? or will it be floating. Because if its not at 0V in the beginning then the divider will always turn on the EN for vout2.Also wont...
View ArticleForum Post: RE: bq2075 V1.81 Ra filter and Ra Max Delta.....
Kjell,You can leave the Ra filter and Ra Max Delta parameters set to their default values.Tom
View ArticleForum Post: RE: TPS622318 SIMULATION
I would run a Switcherpro analysis of the TPS622313. That should yield represenative results for the 318. See http://www.ti.com/tool/switcherpro
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