Forum Post: UCC2946/3946 Watchdog period
Hello,Customer want to program (Twp)Watchdog period around 10ms, but datasheet does not have Twp minimum information.Please advice rough Twp minimum time and if 10ms is acceptable.Regards.
View ArticleForum Post: TPS65721 intermittent VSYS drop
Dear all,When using the PMIC with no battery connected and supplied form the AC pins with 5V, I see intermittent VSYS dropouts, causing a system reset. The load is about 200mA on the LDO and 100mA on...
View ArticleForum Post: UCC28600 RUN LOGIC ISSUE
DEAR SIR/MADAM,I am using the IC UCC28600 for 65-W charging application.I used the same circuit as per the EVM doc sluu263c. http://www.ti.com/lit/ug/sluu263c/sluu263c.pdfWhile testing the board, i...
View ArticleForum Post: About characteristics such as input and output pin of UCC28950
By the terms of use of the customer, I may spend a power supply in the state that the voltage remains on the output side after power supply Off.Therefore, I ask following questions.・ About each input...
View ArticleForum Post: RE: LM2623 Voltage Ripple
Dear allIs there a way to limit the output current in the LM2623 application board AN1274with 5V output and 0.2 Amp out linit does changing the duty cycle is a solution without affecting the out...
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Forum Post: RE: Really big capacitor with LM338
Donald,I appreciate the feedback.The LM338's are not in parallel. I'm using two independent 36Vdc switch mode supplies with floating outputs, each one is regulated via a LM338 down to 30Vdc and the...
View ArticleForum Post: RE: TPS65910Ax Built-in RTC
Hello again,Please disregard my previous post.It turns out that the problem was caused by the solid state backup battery not being able to cope with the current surge that occurs when the device...
View ArticleForum Post: Wireless charging - heat problem
Im using BQ51013ARHL as a receiver for wireless charging, BQ24079T receives power 5V from it to charge LiIon battery at 4.2V and finally it connects to TPS77833 LDO to provide 3.3V output to the...
View ArticleForum Post: BQ77910A Continuously current drain issue (balancing)
Dear all,I´m running the BQ77910AEVM together with a Li-Ion battery pack which consists of 10 cells connected in series. I got one big issue: When I´m charging or discharging the pack a continuously...
View ArticleForum Post: LM5117 vs. TPS4017 which one is the better solution?
Hi,Could you please recommand which one is the best solution between LM5117 and TPS4017?otherwise what is best solution?that meaning is both aspect of performance(efficeincy) and compact design.. 1)...
View ArticleForum Post: RE: bq34z100
1) Those are the correct connections and the gauge should report the charge current and voltage.2) I assume that you meant two 0.02 ohm resistors in parallel. Yes , this is okay.3) That should be...
View ArticleForum Post: RE: UCD3138CC64EVM-030 UCD3138source code
Brandon, hi,thank you for your reply .But can you send me the sample code for PFC and HSFB topology of UCD3138?We need the source code to work on our applications. Thank you...
View ArticleForum Post: RE: User's Guide, UCD3138 Isolated Power Fusion GUI
Brandon, Thanks very much for your reply. But I need the sample code for PFC and HSFB topology of UCD3138.Can you send the sample code to me? Thank you very much....
View ArticleForum Post: Bypassing the LM5116 internal linear regulator & sourcing current...
I have a 24V to 10V step down application that uses the LM5116. It provides very high output power and as result uses quite low Rdson MOSFETs. The resultant gate charge is quite high and exceeds the...
View ArticleForum Post: RE: Not Getting PWM pulses from TPS40054
Thank you very much. I will contact GCI people.
View ArticleForum Post: RE: 2.5 to 3 MHz Flyback Controller chip
2.5Mhz and flyback means high snubber loss even with a well coupled transformer.Please tell about your input voltage and EMI problems....I think a LLC half bridge will be a better choice for mhz...
View ArticleForum Post: The semi-bridge less PFC application
Hi,I have reviewed the UCC28070 Implement Bridgeless Power Factor Correction (PFC) Pre-Regulator Design document.It's a 200W CCM application, how if I want a semi-bridge less PFC which operate in...
View ArticleForum Post: Switching current 1.5A is possible with 3.3 Vin ,5Vo
Hi friends... Got a bit confusion with LMR62421,Is the device is able to supply current of 1.2A at 3.3V Vin and 5V Vout.....suggestions are welcome other device too.....Thanks in...
View ArticleForum Post: RE: LM26480 feedback network
Hi Kern,Thanks for your help.Actually I thought the caps were mainly there for compensating for the RC delay caused by the feedback resistors and the parasitic capacitance. This is why I would choose...
View ArticleForum Post: About a diode emulation function of LM5119
Dear, AllVoltage Maximum Ratings of SW Pin is short in the circuit of the customer.Therefore it is considered whether they connect the signathey which I pushed for resistance to input of SW Pin.There...
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