Simulation, hardware & system design tools forum - Recent Threads

TMS320F28379D: Recommendation on using a 0.15 mm wide trace with a ground plane placed underneath for pwm signal routing ??

Haseeb Afzal Mir — Mon, 11 May 2026 20:58:18 GMT

Part Number: TMS320F28379D

Hi , I was looking to develop the control card housing 7 differential sensing and conditioning circuitery . Analog protection . 16 epwm's and many gpio's .

I was looking for some hardware reference guide particularly on the PCB front .

Like I am using a 6 layer board with the stack looking like

Layer 1 -- Signal

Layer 2 -- GND.

Layer 3 --- PWR ..

Layer 4 --- Signal ..

Layer 5 ---- Ground .

Layer 6 ---- Signal .

.Also I am using Analog tool of TI to calculate the trace width I require to route the traces . For epwm's especially . I switching frequency is going to be 500 KHz . LLC converter . I calculate the trace width required to achieve it is 0.15mm . But the wider trace gives low inductance . Which one is recommended ?

Any reference guides on PCB front ?

Thanks

RE: TMS320F28379D: Recommendation on using a 0.15 mm wide trace with a ground plane placed underneath for pwm signal routing ??

Haseeb Afzal Mir — Wed, 13 May 2026 11:29:26 GMT

Trace length is 70 mm.... And trace width is 0.2 mm ..... Its separated from the analog circuitry with a ground plane beneath it all throughout .

RE: LM61480: Deviations in datasheet specifications and Webench design

Naresh Adepu — Wed, 13 May 2026 09:31:28 GMT

Hello Irene

WEBENCH is a good starting point but it uses generalized models, so I would recommend relying on datasheet recommendations because they are specific to the device and are actually based on silicon data. You can validate every component against the datasheet component recommendations and use them accordingly in your design.

if you have final schematic that needs to be reviewed, we would be happy to support. Please share another request accordingly.
thanks and regards

naresh

LM61480: Deviations in datasheet specifications and Webench design

Irene Binnet — Tue, 12 May 2026 06:31:56 GMT

Part Number: LM61480

Hi,
I have found differences in datasheet specifications and Webench design, so I need to know which one is to be followed. Please find attached the Webench design I've obtained for the above mentioned buck IC. This is found deviating from the design specified in the datasheet.
Vin = 20 V
Vout = 3.3 V
Iout = 8 A

RE: DP83TC816-Q1-DESIGN: DP83867ERGZ-R-EVM MCAD FILES

Charles Wang — Tue, 12 May 2026 22:34:59 GMT

Hi Lorena,

Please let me know if you can use this step file.

e2e.ti.com/.../SV601189A.step

Best,

Charles

DP83TC816-Q1-DESIGN: DP83867ERGZ-R-EVM MCAD FILES

Lorena Gonzalez — Tue, 12 May 2026 21:21:17 GMT

Part Number: DP83TC816-Q1-DESIGN

Can I please have a 3D CAD model of DP83867ERGZ-R-EVM? Preferably in the form of a STP file or Allegro files, I cannot open the Altium files provided with my software. I had to put a different PN in the field above because it would not let me use DP83867ERGZ-R-EVM.

RE: TMS320F28379D: Recommendation on using a 0.15 mm wide trace with a ground plane placed underneath for pwm signal routing ??

Peter Luong — Tue, 12 May 2026 22:04:11 GMT

Hi Haseeb,

If you are only designing for sensing and control circuitry, then the controlCARD itself will likely be smaller. In that case, note that impedance and termination have reduced impact for short traces (<3 cm trace length). If you have already routed the ePWM traces, what is the trace width?

Regards,

Peter

TPS40170: Simetrix simulation issue with TPS40170 PSpice Unencrypted Transient Model (SLUM141C.ZIP)

3PO — Tue, 12 May 2026 01:23:10 GMT

Part Number: TPS40170

I downloaded TPS40170 PSpice Unencrypted Transient Model (Rev. C)

from the website, then imported the lib file into Simetrix 8.5, and an error message appeared during simulation as follows:

There are errors in the circuit. Simulation aborted
TPS40170.lib (42): ...
*** ERROR *** Error in declaration of parameter 'PARAMS:'

TPS40170.lib (210): ...
*** ERROR *** Error in declaration of parameter 'PARAMS:'

TPS40170.lib (217): X_U4_CALIB_TIMING_U6 RUN U4_CALIB_TIMING_N2809723 one_shot PARAMS: ...
*** ERROR *** Error in declaration of parameter 'PARAMS:'

TPS40170.lib (219): ...
*** ERROR *** Error in declaration of parameter 'PARAMS:'

TPS40170.lib (267): ...
*** ERROR *** Error in declaration of parameter 'PARAMS:'

TPS40170.lib (347): X_U6_U125 CLK U6_N3133255 one_shot_1 PARAMS: PARAMS: T=50
*** ERROR *** Error in declaration of parameter 'PARAMS:'

RE: TPS40170: Simetrix simulation issue with TPS40170 PSpice Unencrypted Transient Model (SLUM141C.ZIP)

Andrew Kutzler — Tue, 12 May 2026 21:26:08 GMT

Hi 3PO,

I've assigned an expert to this thread.

Thanks,

Andrew

RE: DRV3946-Q1EVM-DESIGN: DRV110 Simulation Error

Mojtaba Afshar — Tue, 12 May 2026 15:05:16 GMT

Hello Micheal,

Thank you for your patience.

The SBWM004A.TSC works as expected.

Please increase simulation time in transient analysis and separate curves from View menu. Please let me know if you have any questions.

Regards

Mojtaba

DRV3946-Q1EVM-DESIGN: DRV110 Simulation Error

Michael Cain — Mon, 11 May 2026 21:22:59 GMT

Part Number: DRV3946-Q1EVM-DESIGN

The Tina DRV110 simulation example doesn't seem to work properly and immidiately goes to pwm and not peak current so waveform is not as the datasheet would imply.

RE: LM61480: Deviations in datasheet specifications and Webench design

Naresh Adepu — Tue, 12 May 2026 08:37:55 GMT

Thanks for your question

I will look into it and get back to you as soon as possible

TIDA-020033-TD-DESIGN: Request for Access to TIDA-010269 Design for R&D Use

chandran bose1 — Tue, 12 May 2026 04:24:57 GMT

Part Number: TIDA-020033-TD-DESIGN

Dear TI Support Team,

Hi, this is Chandran from IIT Madras.

I would like to use the TIDA-010269 reference design for our research and development work.

I previously contacted Bill Xu (bill.xu@ti.com) by email, and he informed me that access to this design is covered under a Non-Disclosure Agreement (NDA). He suggested that I contact the local TI support team or post on the TI E2E Support Forum for guidance.

Could you please let me know the procedure to obtain access to this design and complete any required NDA formalities?

Thank you for your support.

Best regards,
Chandran
IIT Madras

RE: DRV3946-Q1EVM-DESIGN: DRV110 Simulation Error

Mojtaba Afshar — Tue, 12 May 2026 00:55:32 GMT

Hello Micheal,

Please let me check it and get back to you by tomorrow EOD.

Regards

Mojtaba

RE: TMS320F28379D: Recommendation on using a 0.15 mm wide trace with a ground plane placed underneath for pwm signal routing ??

Haseeb Afzal Mir — Mon, 11 May 2026 21:55:20 GMT

Hi ,

No . I am looking for the Control card design only housing sensing and control circuitry and not the power circuitry.....

The design guide you mentioned doesn't seem to suggest the trace width's of the routing signals . I was looking for some guidance regarding that aspect .

0.15 mm wide trace offers a characteristic impedence of 53 ohm as calculated using TI's analog design calculator . While a wider trace of 0.35 mm offers much lower resistance . What is the recommended trace width ?

RE: TMS320F28379D: Recommendation on using a 0.15 mm wide trace with a ground plane placed underneath for pwm signal routing ??

Peter Luong — Mon, 11 May 2026 21:44:37 GMT

Hi Haseeb,

You can currently reference the C2000 Hardware Design Guide for now: https://www.ti.com/lit/spracz9

Are you looking at any of our LLC reference design for your design? What is the power level and any isolation / multi-phase?

Regards,

Peter

POWERSTAGE-DESIGNER: Access denied for downloading Powerstage-Designer

Espen Haaland — Mon, 11 May 2026 08:08:08 GMT

Part Number: POWERSTAGE-DESIGNER

Hi, I tried to download Powerstage designer, but received the following error message:

We are unable to approve your download at this time.

If you feel you have been denied incorrectly, please contact the TI Customer Support Center at https://www.ti.com/supportform. Be sure to include your name, email address, company, and country exactly as it appears on your myTI account.

Thank you,
Texas Instruments

Please advise why this happened and what I can do to get access to the SW.

Best regards,

Espen Lunde Haaland

RE: POWERSTAGE-DESIGNER: Access denied for downloading Powerstage-Designer

Tatiana S - Admin — Mon, 11 May 2026 17:06:13 GMT

Hi Espen, please submit a support request with options highlighted below selected.

PSPICE-FOR-TI: Can´t download the pspice tool

Tania Lazaro — Mon, 11 May 2026 14:37:09 GMT

Part Number: PSPICE-FOR-TI

Looks like there is a bug in the TI webpage and the Pspice tool can´t be downloaded.

BQ41Z90EVM: Can't calibrate device batt gain

Pedro Julián Brandolin — Wed, 06 May 2026 16:06:47 GMT

Part Number: BQ41Z90EVM

Hello,

I just got my BQ41Z90EVM. I got to make bqStudio recognize it and flashed the firmware. However, I can't calibrate its Battery Gain. For some reason 10770mV seems to be an out of range value, while it's the real voltage value between BATT+ and BATT-.

Does anyone know why could this be happening?

Thanks,

Julián

RE: BQ41Z90EVM: Can't calibrate device batt gain

Pedro Julián Brandolin — Mon, 11 May 2026 14:07:33 GMT

I do not have any extra logs or files. I just connected my EVM, and I can calibrate cell voltage but not batt voltage. The error message makes no sense as I am actually writing a value inside the proper range.

MSP430FR2000: MSP430FR2000

Diogo Cunha — Tue, 28 Apr 2026 10:48:14 GMT

Part Number: MSP430FR2000

We are currently evaluating TI ICs for a high-volume application with a projected demand of 30 million units per year.

We have identified one specific parts in the TI portfolio that meet our technical requirements: [MSP430FR2000 ]. However, we need to confirm if these specific ICs are available in bare die / unsawn wafer format.

Could you please assist us with the following:

Confirm the availability of the aforementioned ICs in bare die format.
If these specific parts are not available as die, could you recommend alternative Microchip ICs that are offered in bare die format and meet the following specifications:
- - General Purpose I/O: At least four GPIOs.
  - Connectivity: No NFC, RF, or wireless communication interfaces are required.
  - Temperature Measurement: Integrated temperature sensor with accuracy better than ±5 °C, with particular focus on performance between -30 °C and +5 °C.
  - Time Keeping: An internal Real-Time Clock (RTC) is preferred. If not available, an alternative time-tracking method must achieve a maximum drift of less than 2 hours over a 14-day period.
  - Power Management: Support for deep sleep modes with extremely low power consumption. Ideally, GPIO states should be retained during deep sleep (e.g. both GPIOs held at logic LOW / GND).
  - Programmability: The firmware architecture must support state-based logic equivalent to the defined operational flowchart, including activation, measurement, sleep, and display update states.
  - Wide VDD operating range to support battery voltage variation (e.g. 3.3 V to ~1.0 V). The exact minimum voltage is flexible, but should be as low as reasonably achievable.

Given the scale of this project, we are looking to establish a long-term supply chain and would appreciate your guidance on the procurement process for this volume.

RE: MSP430FR2000: MSP430FR2000

Diogo Cunha — Mon, 11 May 2026 10:33:07 GMT

Hi Brian,

Thank you for your message.

Have you had the chance to confirm the provided part number for the Die version? Also, how can I get a quote for the three PNs we are discussing?

I look forward to hearing from you.

Thank you and kind regards

PSPICE-FOR-TI: WARNING (LMC-07702) error

Nacho Martinez — Mon, 11 May 2026 09:36:41 GMT

Part Number: PSPICE-FOR-TI

Hi,

I receive this erres when I was simulating a circuit:

How can I solve it?

Best regards.

UC1843-SP: UC1843BEVM-CVAL

Jan R. Petersen — Fri, 01 May 2026 07:46:41 GMT

Part Number: UC1843-SP

Dear TI

I'm using the UC1843BEVM-CVAL and would like to rebuild it to galvanic isolated feedback. It looks like most of the passive components it already mounted on the PCB and it is only a few components that has to be mounted or removed.

Do you have an application note or an article describing the rebuild and the design calculations?

Best regards

Jan