Forum Post: RE: TPS61175 soft start
Hi Alan,I recommend trying the search function before posting. Many times questions have been asked before and you can find the answer with a quick search. The answer is also in the link...
View ArticleForum Post: RE: UCC27531EVM-184 evaluation module
Thilak,The maximum switching frequency of the EVM will be on the order of signal propagation throughout the EVM. Have a look at the figures on page 10 of the User Guide. The propagation delay from the...
View ArticleForum Post: RE: H bridge driver
Truth be told Pityu, We work exclusively with NexFETs, so I think someone else may be able to assist you better. Can you tell me what is your application?
View ArticleForum Post: RE: Need help finding a Li-Ion charger
All of our chargers are buck chargers and do not boost. One would have to get a boost regulator and place in front of our charger.For gas gauge questions, please post question in gas gauge forum.
View ArticleForum Post: RE: Reverse Li-Ion battery detection
Yes, when source of the P-CH is connected to the battery and the Drain is connected to the output of the charger and when the FET is on, it should only add 10s of milliohms to the battery impedance and...
View ArticleForum Post: RE: not updated Remaining Capacity
Sergey,I do not see a reason why passed charge would not increment. Please send the senc file and I will try it.Tom
View ArticleForum Post: RE: BQ34Z110 and charge mode?
One guy I mentioned this component to, who knows electrical circuits and batteries better than I do, raised the question if the component also provide SOC estimates during charge, 'considering it's...
View ArticleForum Post: RE: Trouble with using UCC38C40 to control boost converter
Hi, Flavio,You are probably busy at this time, please take your time. If you find anything helpfull, please let me know.He, Siyu
View ArticleForum Post: RE: bq28550 R0 v0.03 senc file
Hi Christoph,Pls find attached below.thanksOnyx(Please visit the site to view this file)
View ArticleForum Post: RE: 5V, 0.5A output from LM5010
It is strange that the part should fail in this Vin range. Is it possible to share the schematic and waveforms?
View ArticleForum Post: RE: TPS65130 Power Saving Mode Efficiency Question
Hello Travis,The efficiency will always be better with power save mode on for both converters. Power save mode means that the part is allowed to stop switching for a while until the output is depleted...
View ArticleForum Post: BQ24630 Behavior
I setup and tested EVM boards to operate a Bq24630 DPM in a 24 V system using 6-cells of LIFEPO4 26650 cells (PCM included from suppilier). The output of the DPM drove an LM25118 buck boost converter...
View ArticleForum Post: RE: LM5088-2 Output voltage switching noise issue
HiHere are something you can try.1. Increase C52 to 0.47uF2. Add an external boot diode from BST to VCC.3. Add a dummy loadBy the way, is it stable at full load ?Regards,
View ArticleForum Post: RE: LM25017 Excessive Ripple, Nowhere near Webench Results
A 2VIN ripple should not result in high ripple at the output. I think something else may be incorrect. Are you measuring directly across the output capacitor? Can I see the VIN, VOUT, IL waveforms at...
View ArticleForum Post: RE: alternative to lm113 (1.2 volt refrence) for adjustment of...
Any precision reference that closely matches the LM117 Vref (1.25V typical) would be suitable.Yes, you could use two Si diodes as a ~functional replacement~ if output voltage tolerance and tempo is not...
View ArticleForum Post: RE: alternative to lm113 (1.2 temperature compensated reference...
See : http://e2e.ti.com/support/power_management/linear_regulators/f/321/t/271848.aspx
View ArticleForum Post: RE: Low-dropout current source
Borge,Thanks for your post. As I understand, you need a 4V, 400mA LDO. The biasing resistor for your shunt regulator will control the amount of current you draw from this LDO. Please take a look at...
View ArticleForum Post: BQ24133 Enable
Hello,The BQ24133 doesn't have an enable pin, but it looks like we might be able to trick it into doing this function using a number of the shutdown methods. I see that the EVM shorts the VREF to...
View ArticleForum Post: RE: Problem with radiated emissions from TPS51116PWP
When the inductor current runs dry there is ringing and exponential decay that you can see in your waveform. Measure that ringing frequency and see how it compares to your radiated frequency. Usually...
View ArticleForum Post: RE: H bridge driver
Pityu, My suggestion would be to try the motor control forum. Look under "Applications > Motor Drivers"I believe this team will be of the most assistance to you but I will be happy to help you...
View Article