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TINA/Spice/TPS54350: Input voltage troubles with simulation; sim fails with Vin above 10.6V

June 12, 2019, 12:10 pm
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Part Number:TPS54350

Tool/software:TINA-TI or Spice Models

I have the TPS54350 spice model and am working in Orcad pspice.

I have built the circuit modeled in figure 24 of the datasheet (page15) which should give me 3V3 out with Vin from 6V-18V, with a small differences being the Rt pin is grounded, not floating and I do not have the snubber in circuit on the low side FET. When I simulate the design with Vin @ 12V, I do not get the 3V3 output, the output doesn't rise above 25mV. 

I found if I change the Vin from 5V to 10.6V, I get the 3V3 output as expected, but if I exceed 10.6V the output does not meet expectations (picture below w/Vin@10.7V), and appears to be cycling around 600mV so I am wondering if there is something going on internal to the model. Has anyone experienced any issues with this model at this voltage level?

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TINA/Spice: AC load current step change detector

June 12, 2019, 7:58 pm
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Tool/software:TINA-TI or Spice Models

i am thinking how to design  comparator circuit for AC voltage/curtrent  step change. I need to detect AC output voltage/current when there i s load current transient . how to set upper and lower thresholds and if load current/voltage is greater than upper  threshold   send high signal to Microcontroller  or if load current is lower than lower threshold  send high signal to Microcontroller. detection of step change should be so fast that there is  no or very less detection delay.and step change can be at any theta Is it possible to detect step change for non-linear rectifier load 

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CCS/TIDA-00721: About this for code

June 12, 2019, 8:36 pm
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Part Number:TIDA-00721

Tool/software: Code Composer Studio

hello

Do you have this for the sample code?

I need it

Could you provide a link or a package?

My e-mail is 1601695597@qq.com

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TIDA-00254: 3d scanning accuracy

June 12, 2019, 10:00 pm
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Part Number:TIDA-00254

Hi E2E,

Good day!

Do you have any information regarding the accuracy (x, y, and z) of the 3d scanning capability of TIDA-00254?

Thank you for your usual support.

Best regards,

Franz

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TINA/Spice/LM25011: LM25011

June 13, 2019, 5:42 am
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WEBENCH® Tools/TPS61089: Does Webench work with Altium 19? I don't see it in the extensions tab. How can I add it? If not, what is the best way to export webench simulations then import them into altium 19?

June 13, 2019, 1:34 pm
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Part Number:TPS61089

Tool/software: WEBENCH® Design Tools

Does Webench work with Altium 19? I don't see it in the extensions tab. How can I add it? If not, what is the best way to export webench simulations then import them into altium 19?

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TINA/Spice/AWR1642BOOST: Why is vitalsignsradar_demo.exe not installed?

June 13, 2019, 10:38 pm
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TIDA-00281: Changes required to run 60V-250W motor on this board.

June 13, 2019, 10:40 pm
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Part Number:TIDA-00281

What changes required in this design if i want to run 60V-250Watt Three Phase BLDC motor on this design?

I want detailed answer which covers all the areas where changes are required.

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TIDA-00663: AFTER LASER DRIVER

June 14, 2019, 1:12 am
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WEBENCH® Tools/LM27762: LM27762 Webbench Schematic Error

June 14, 2019, 1:38 am
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Part Number:LM27762

Tool/software: WEBENCH® Design Tools

Hi,

it seems like Rfbt2 and Rfbb2 for the negative voltage divider are swapped.

Values should be swapped for correct Output voltage.

Example

Greetings

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TIDA-010042: Hardware 48V for 12 or 24V application

June 14, 2019, 3:26 am
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Part Number:TIDA-010042

Hi all ! 
I would like to realize a MPPT  solar charge controller, adaptable for 12V, 24V and 48V batteries. 

Is it possible to create a unique hardware board for 48V battery but to use it also for smaller ones (12V and 24V) just modifying the software part ? 

Thank you very much for your time

Kind regards

Pauline

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TINA/Spice: No

June 14, 2019, 4:00 am
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Tool/software:TINA-TI or Spice Models

Hello I have this error message from the installation of the application Tina90-TIen, I am in administrator mode and launches administrator on a Seven 64bit OS!
do you have an idea or solution to avoid this error?
thank you

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WEBENCH® Tools/TIDA-00367: TIDA-00367

June 14, 2019, 4:19 am
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Part Number:TIDA-00367

Tool/software: WEBENCH® Design Tools

we use your IC(UCC28630) to design one playback, and study your reference design(TIDA-00367),and find the below formula:

the power dissipated in the snubber circuit(RCD): P_SN=0.5 x L_leak x (I_pri_PK)^2 x [V_SN/(V_SN-nVo)] x Fsw   on page 11.

why does the above formula need multiply  [V_SN/(V_SN-nVo)] , what do it mean? please explain it,

thanks

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TINA/Spice/WL1831MOD: WL1831MOD

June 14, 2019, 4:40 am
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TIDA-01606: Cap C130 between PGND and GND

June 14, 2019, 6:33 am
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Part Number:TIDA-01606

Hi,

I found the blow drawing in your TIDA-01606 design. What is the purpose of placing this capacitor? Doesn't this placement let the noises to be transferred into the GND that is the cold side controller ground? What do we gain instead?

Thank you

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WEBENCH® Tools: filter design tool launch gives blank browser screen and nothing more

June 14, 2019, 9:35 am
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Tool/software: WEBENCH® Design Tools

Please, let me know, what needs to be set, so I can use filter-design-tool.

It appears that clicking the launch of the filter design tool gives only a blank screen.

It is a web page: https://webench.ti.com/filter-design-tool/filter-type.

I am using Windows10 and Edge.

Sincerely,

Vlad Pavlovic

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TIDA-00527: TIDA-00527

June 14, 2019, 9:58 am
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Part Number:TIDA-00527

hi

We are using power over RS485 in TIDA00057. We have the the board for the same having SN65HVD1780 IC With diffeerent value of inductor in pcb

We are sending data us from arduino at 115200 baud rate. And receiving at the arduino at same baud rate. 

We are facing problem in sometimes the data get lost sometimes it get corrupted,sometime it show well. when we close the serial terminal. Can u help me knowing what can be the reson for the same.

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WEBENCH® Tools/TPS62162: Datasheet says 3-17V input. Webench says that's not acceptable. Who is right?

June 14, 2019, 3:33 pm
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Part Number:TPS62162

Tool/software: WEBENCH® Design Tools

I want to see a reference design that will allow for either LIPO or 12VDC input to a TPS62162.  Webench will not allow lower than 4V input.  Datasheet says the chip will handle down to 3.  Why do they not agree and which is accurate?  Can TI be trusted if their reference tools don't even work?

And the eagle exports are broken too.  The board files are not consistent with the schematics.  Why put out such a low-quality offering?

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TINA/Spice/TLV7256: spice model

June 15, 2019, 4:39 am
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Part Number:TLV7256

Tool/software:TINA-TI or Spice Models

Hello,

please could I have the unencrypted spice model for TLV7256 device.

Thanks

Marco

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TINA/Spice/LM5117: Trying to implement circuit from app note but won't converge

June 16, 2019, 8:32 pm
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Part Number:LM5117

Tool/software:TINA-TI or Spice Models

Hello,

I want to simulate the circuit given in Figure 3 of http://www.ti.com/lit/an/snva829/snva829.pdf in TINA, but I am getting convergence issues when I run my simulation. It hits a convergence issue as soon at the mosfets start switching. I don't have a lot of experience with TINA, so it is entirely possible I am just doing something wrong or set up the circuit incorrectly, but I haven't been able to find my error so far. Thanks(Please visit the site to view this file)

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