WEBENCH® Design Center

Forum Post: RE: Error when trying to import TPS61085 Spice model into TINA-TI

Abhijit Pethkar — Mon, 20 May 2013 06:07:00 GMT

I am not able to use the SM74611 diode transient model in TINA. Please convert it to .TSM model and upload on the website.

Forum Post: RE: Webench no longer recommending ceramic caps?

Matt Church — Fri, 17 May 2013 23:33:00 GMT

Sure, no problem. Thanks for you help.

I used the following specs with Webench:

VinMin = 34.0V
VinMax = 46.0V
Vout = 30.0V
Iout = 1.1A

When I use those specs today, I get a footprint of 380 mm^2 and it suggests electrolytic caps, but when I used webench in November of last year, it generated the following design: (I'm sorry if it's hard to read, but I can't seem to attach the pdf it generated for me)

Device = TPS54360DDA
Topology = Buck
Created = 11/30/12 9:19:42 PM
BOM Cost = $4.46
Total Pd = 2.04 W
Footprint = 234.0 mm2
BOM Count = 12

1. Cboot MuRata GRM155R71A104KA01D
Series= X7R
1 $0.01 Cap= 100.0 nF
VDC= 10.0 V
IRMS= 0.0 A
0402 8mm2
2. Ccomp MuRata GRM033R60J103KA01D
Series= X5R
1 $0.10 Cap= 10.0 nF
VDC= 6.3 V
IRMS= 0.0 A
0201 6mm2
3. Ccomp2 Kemet C0603C470J5GACTU
Series= C0G/NP0
1 $0.01 Cap= 47.0 pF
VDC= 50.0 V
IRMS= 0.0 A
0603 10mm2
4. Cin MuRata GRM32ER72A225KA35L
Series= X7R
1 $0.38 Cap= 2.2 µF
ESR= 7.0 mOhm
VDC= 100.0 V
IRMS= 4.4 A
1210 23mm2
5. Cout MuRata GRM32ER72A225KA35L
Series= X7R
1 $0.38 Cap= 2.2 µF
ESR= 7.0 mOhm
VDC= 100.0 V
IRMS= 4.4 A
1210 23mm2
6. D1 Diodes Inc. DFLS1100-7 1 $0.19 VF@Io= 770.0 mV
VRRM= 100.0 V PowerDI123 22mm2
7. L1 Coilcraft XAL5050-223MEB 1 $0.83 L= 22.0 µH
DCR= 100.0 mOhm
XAL5050 54mm2
8. Rcomp Vishay-Dale CRCW04024K75FKED
Series= CRCW..e3
1 $0.01 Res= 4.75 kOhm
Power= 63.0 mW
Tolerance= 1.0%
0402 8mm2
9. Rfbb Vishay-Dale CRCW040210K2FKED
Series= CRCW..e3
1 $0.01 Res= 10.2 kOhm
Power= 63.0 mW
Tolerance= 1.0%
0402 8mm2
10. Rfbt Vishay-Dale CRCW0402374KFKED
Series= CRCW..e3
1 $0.01 Res= 374.0 kOhm
Power= 63.0 mW
Tolerance= 1.0%
0402 8mm2
11. Rt Vishay-Dale CRCW040268K1FKED
Series= CRCW..e3
1 $0.01 Res= 68.1 kOhm
Power= 63.0 mW
Tolerance= 1.0%
0402 8mm2
WEBENCH
®
Design
Copyright © 2012, Texas Instruments Incorporated 2 ti.com/webench
WEBENCH
®
Design Report TPS54360DDA : TPS54360DDA 34.0V-46.0V to 30.0V @ 1.1A November 30, 2012 21:20:17 GMT-8
# Name Manufacturer Part Number Quantity Price Properties Footprint
12. U1 Texas Instruments TPS54360DDA 1 $2.52 Switcher
R-PDSO-G8 57mm2

Forum Post: RE: LM3670-ADJ Potential Error - 2.5V Max output voltage in WB model

LaRita Gwie - WEBENCH Design Center — Fri, 17 May 2013 22:06:00 GMT

Hi,

Thanks for submitting the feedback. Please let me know the input voltage range and output current your customer is using so we can accurately reproduce the issue.

Regards,

LaRita Gwie

Forum Post: Exporting the webench generated simulation data

Hw47343 — Fri, 17 May 2013 13:52:00 GMT

Hi,

Might be this question would have come before, but is it possible to export webench data (after simulating the VRM) to a text file.

Kind regards,

Varindra

Forum Post: RE: LM5010A Macromodel

Hw47343 — Fri, 17 May 2013 09:09:00 GMT

Hi Britt,

Thanks for the suggestion. But We have already made the PCB and looking to replace this IC LM5010MH (after some simulation).

Kind regards,

Varindra

Forum Post: RE: LM3414HV off current (6uA) too high for application. HELP!! ;)

David Hillstrom — Fri, 17 May 2013 00:19:00 GMT

Jonathan,

That sounds great to me! I don't mind if it takes a little time, as long as I know someone is going to help. :)

- Dave Hillstrom

Forum Post: RE: Tina (designsoft): small signal model, bode plot....

Britt Brooks - WEBENCH® Design Center — Thu, 16 May 2013 16:05:00 GMT

Bishnu,

The two product models are very different, hence, the simulation times will vary. The analysis parameters only control how the simulator interacts with the models and the circuit components. they do not establish a simulation speed. The TINA models do run faster than the models would run in PSpice, however, the models themselves are not the same.

I do not know exactly how different the two models are, however, it appears that from a simulation standpoint, they are very different. I do not know how to make the TPS54218 simulate at the same speed as the LM5009. I doubt that anyone would know how to do that unless they made both models.

Britt

Forum Post: TINA TPS40055 Transient Reference Design

soo lee84680 — Thu, 16 May 2013 14:51:00 GMT

Hi, I downloaded the TINA file from the web site and simulated it.

I want to see how current limit works in the circuit, but the circuit never go current limit even if using a small resistor between Vin and ILIM pin like 1k.

Would you please tell me why it is? Thank you.

Forum Post: RE: Tina spice model for LM21215A

Bishnu Ban — Thu, 16 May 2013 06:43:00 GMT

many Thanx Britt!

your information war very helpful!

Regarding your hints to another threads, TI-simulation, I will go through to your hints and response you.

Bishnu

Forum Post: RE: Windows 8 driver for the SPIO-4 module

Matt Quantz — Wed, 15 May 2013 18:42:00 GMT

Apparently the board has been tested using Windows 8. My problem seems to be trying to install a 32-bit driver on a 64-bit machine.

Forum Post: RE: substitute model for TPS43351Q1

Nikhil Gupta - WEBENCH Design Center — Wed, 15 May 2013 02:19:00 GMT

Hi Bishnu,

You can use the TINA-TI model for TPS43330-Q1 (http://www.ti.com/product/tps43330-q1#simulationmodels). The 2 Bucks in this model should be very similar to the Bucks in TPS43351-Q1.

Best regards,

Forum Post: RE: Device libraries for Altium Designer

Brian White — Tue, 14 May 2013 20:58:00 GMT

Solution: Incorrect file

Forum Post: RE: TPS84610 CAD Model Incorrect

Brian White — Tue, 14 May 2013 20:58:00 GMT

Hi Oliver,

Thanks for the response. I am in a rush and do need the file, but I should be able to create it myself in that time. I would still be interested in the file from the vendor though.

Brian

Forum Post: RE: NODESET – Initial bias point guess // available in TINA-TI ?!

Britt Brooks - WEBENCH® Design Center — Tue, 14 May 2013 14:28:00 GMT

JC,

Can you provide your .TSC file? TINA-TI does have node sets available and initial conditions:

They are found at the end of the buttons under the Basic tab.

Britt

Forum Post: RE: W- bench tool functioning

Bishnu Ban — Tue, 14 May 2013 11:47:00 GMT

I have entered that datas (input=6-12V and Output =12V/3A) and

following components are suggested and designing works. LM5122, LM5122-Q1, TPS40210, TPS40210-Q1

Here is the result for different inputs.

(Please visit the site to view this file)

Forum Post: RE: Ultralibrarian issue

Mariusz Osowski — Tue, 14 May 2013 11:13:00 GMT

Hi Janet,

Sorry for delay I have no notification about reply from this forum.

I was tried different package : TPS62150_RGT_16.bxl

But results are similar to above so no success in importing.

Mariusz

Forum Post: RE: LP2953 pspice model

Florencio Gonz��lez — Tue, 14 May 2013 10:29:00 GMT

Thank you very much, you have moved me to check the Pspice versions. At the office I have the 16 one and I have not asked the team to update it yet, it includes the LP2951 (I think in OPAMP folder); nevertheless, at home I have the 16.5 one (which I use with less frequency), and here there is a folder of regulators, even with the LP2953. So no problem...

Thanks.

Forum Post: RE: FilterPro 3.1 gives wrong cutoff frequency designs for low-ripple Chebyshev lowpass filters

Thomas Jackson — Mon, 13 May 2013 17:27:00 GMT

According to Budak's Passive and Active Network Analysis and Synthesis, the lowpass cutoff frequency for lowpass filter should be at 1/(squareroot(1+epsilon²)) of the peak magnitude, where epsilon is the ripple factor. Simplifying epsilon to 1, puts the cutoff point at -3dB. With smaller values of epsilon, the cutoff point is at a higher magnitude. It still seems to me that FilterPro 3 does not calculate the cutoff frequencies of a Chebyshev lowpass correctly for epsilon values below some limit.

Forum Post: RE: Several Usb-To-Gpio adapater on same PC

stephane freund — Mon, 13 May 2013 12:31:00 GMT

Hello Talal,

Thank you for your reply.

It's a pity that these times it's not possible to connect several devices on the same PC on USB.

I also saw that after each frame sent with the GUI or my own application that microsoft windows handle count is always increased.

It looks that handle are never closed.

I made a log application using usb-to-gpio and the .net dll with a lot of frame reading and after some hours it always crash.
Then I'm asking me is it due to too munch handles ?

Is Usb-To-Gpio driver still supported ?

Regards

Stephane

From: Talal Itani [mailto:bounce-1726169@e2e.ti.com]
Sent: jeudi 9 mai 2013 23:32
To: analog_elab@e2e.ti.com
Subject: RE: [Webench Tools Forum] Several Usb-To-Gpio adapater on same PC

Hello Stephane,

The software of USB-TO-GPIO was not developed to support multiple units plugged in. I am sorry about that.

Please let me know if I may assist you further.

Thanks.

Forum Post: RE: LM25085 webench and excel configurator mismatch

Kevin Ip - WEBENCH Design Center — Sat, 11 May 2013 00:43:00 GMT

Hi Andreas,

I apologize for the delayed response. Thank you for taking the time to bring these points to our attention. I am looking into the WEBENCH calculation for the Cac using the Low O/P ripple option. Regarding your second point, this sounds like something reasonable to implement. I will see if there is something that can be added to the FET selection routine.

Again, thank you for bringing these items to our attention.