Forum Post: RE: BQ34Z100 & Primary Li-ion Batteries
Jaume, An Impedance Track gauge will not be a good choice for Li-SOCl2 chemistry cells, because their discharge profile is too flat. We would recommend using the bq2052, which is a CEDV gauge. RegardsTom
View ArticleForum Post: RE: bq34z100 and ev3200 communication error during battery charging
MichaelDid you calibrate the pack? Can you send a gg file for review?Tom
View ArticleForum Post: I Need Help With an Inhibit Circuit Using a TI UC1825A PWM CTL IC
I'm using the TI UC1825AL PWM Control IC in a MIL/Hi-REL DC-DC Converter design. I'm an expert power electronics engineer, but never used the UC1825A before. The only documentation is the datasheet and...
View ArticleForum Post: LM5575 Prototype Problems
I've built up a circuit based on the SimpleSwitcher workbench to convert +12V to -48V. I built up 5.When I first powered the units up, I got the expected -48V and was very pleased.That was 3 days ago....
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Forum Post: RE: TPS54295 unable to regulate
Hi John,Thanks for your explanation. I've attached the complete schematic of TPS54295. I noticed that the EN2 pin for 6V output is being connected to Vin. Is it possible to toggle the EN with this...
View ArticleForum Post: RE: TPS43061 loop compensation example
Hi Ran,Sorry there are a couple typos in the equation. Some of the values used are incorrect.21µF should be 22µF20mΩ should be 10mΩ19.3kHz should be 14.5kHzAlso the 3/40 term in the denominator should...
View ArticleForum Post: RE: TPS40211 Abs Max During Shutdown
Hi Gui,For typical applications there is no risk in exceeding the abs max on the RC pin. Please see the following post for more...
View ArticleForum Post: RE: LM5575 Prototype Problems
Hi David,We've received your question and will get back to you as soon as possible.Thanks,Anston
View ArticleForum Post: RE: Dimming on both primary and secondary side using LM3445 or...
...not sure of your entire system configuration. You could send a schematic to tim.sullivan@ti.com if you would like.I just remembered a document we had outlining a couple of ways to dim to off that...
View ArticleForum Post: RE: LM25574 sync duty cycle
I would use a fast opto for the level shifting. My first guess is that the sync signal must befloating when the sync goes away and that a square wave is OK. I have sent an email to thedesigners and...
View ArticleForum Post: RE: LMR64010
Anston,So LMR64010 is not a good solution for this application,and need to move to LM2735?eli
View ArticleForum Post: RE: TPS65217 unused DC/DC
Thierry,DCDC1 is part of the power-up sequence. If it does not have a valid output voltage, the power-up will fail. Therefore the connection does need to be made.Regards,Stephen
View ArticleForum Post: RE: Vision machine lighting; constant current regulator or led...
Hi everyone, Im so interested in this topic, and I hope you can help me. Im trying to desig a vision system light but Im little confuse about the standards in vision system lights like the optimal...
View ArticleForum Post: RE: Using BQ24725A with non Li cells
Yes. bq24725A can be used on other type battery because it is SMBus charger. The charge profile is controlled by host controller, such as: tricle charge current, charge termination, maximum charge...
View ArticleForum Post: PMP6648 Reference Design - How do you set the current?
PMP6648 Reference Design - How do you set the current?I looked through all the documentation for the ref design and the controller that is used, but I do not see an equation or reference to how to...
View ArticleForum Post: RE: LP38500-ADJ REGULATOR OUTPUT SHORTS TO GROUND
Hi John,A couple more things:- Can we get Part nos for the input and output caps used? We recommend X5R or X7R ceramic type. See Data Sheet Pg. 9- It seems that the pass FET inside the device fails...
View ArticleForum Post: RE: Low noise Inverting Buck-Boost for light to medium loads?
Hi Anston, thanks for the suggestion. The LM22671 does look interesting. By the way, it does not show up at all in the Webench selection tool. And if I try to find it with the parametric selector...
View ArticleForum Post: RE: LM3488 SEPIC layout guideline
Hi Anston,That helps. Thank you and best regards, Tobias
View ArticleForum Post: bq24192 Input Current Limit
I am in need of some clarification. The datasheet for the bq2419x states it has the capability to charge at 4.5A. More specifically, on page 18 under the Charge Current Control Register table it says...
View ArticleForum Post: LMZ10503 internal compensation
I've designed TI LMZ10503 switching regulator into a new design. I have the data sheet and app note SNVA417C that further elaborates on how to compute compensation values for this switcher. This...
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