Simulation, hardware & system design tools forum - Recent Threads

TPS61378-Q1: TPS61378-Q1 PSPICE Model that supports autoPFM mode

Chirag Desai — Thu, 10 Sep 2026 23:44:03 GMT

Part Number: TPS61378-Q1

I am currenly evaluating TPS61378-Q1 PSPICE Model for use in our application. PSPICE model test-bench mentions that the "V1 model only support forced-PWM model and that autoPFM model will be released later".

I have been unable to find an update to the model. Is a V2 variant available? If not - is there any other part which behaves closely to the TPS61378-Q1 and also supports autoPFM PSPICE model for more accurate performance characterization?

See Application Note 1) for details.

TPS628503-Q1: Request for Circuit Review

WOOHYUN NAM — Thu, 10 Sep 2026 09:26:32 GMT

Part Number: TPS628503-Q1

Hello, I have designed the circuit as shown in the diagram. Could you please review it?

TPS628503-Q1: Request for Circuit Review

WOOHYUN NAM — Thu, 10 Sep 2026 09:20:07 GMT

Part Number: TPS628503-Q1

Hello, I have designed the circuit as shown in the diagram. Could you please review it?

LM5118-Q1: Request for Circuit Review

WOOHYUN NAM — Thu, 10 Sep 2026 09:09:04 GMT

Part Number: LM5118-Q1

Hello, I have designed the circuit as shown in the diagram. Could you please review it?

PSPICE-FOR-TI: device access limit reached

Jules Kuijpers — Thu, 10 Sep 2026 08:25:32 GMT

Part Number: PSPICE-FOR-TI

Hello all,

I got a new company laptop and i tried reinstalling PSPICE for TI but i got the following error message

"you have reached the concurrent device acces limit. too many devices are attempting to connect with the same access key"

can someone help me clear this error so i can use PSPICE for TI on my new laptop?

thank you in advance

TPS4816-Q1: Request for Circuit Review

WOOHYUN NAM — Thu, 10 Sep 2026 07:59:56 GMT

Part Number: TPS4816-Q1

Hello, I have designed the circuit as shown in the diagram. Could you please review it?

LMR38020-DESIGN-CALC: Can this LMR38020F_TRANS.lib PSpice model simulate the SYNC function?

satoshi hoshi — Thu, 10 Sep 2026 02:04:05 GMT

Part Number: LMR38020-DESIGN-CALC

I am attempting to simulate the SYNC function of the LMR38020F.

I want to syncronize the switching of two LMR38020F devices with a 180 degree phase sift.

Although I have obtained simulation results, however these were the 180 degree phase sift is NOT occurring.

Can this LMR3820F_TRANS.lib PSpice model simulate the SYNC function?

I am using LMR3820F_TRANS.lib is dated 27AUG2021 Update Final 1.00

TPS543C20: Encrypted Simulation

Sean Reeder — Wed, 09 Sep 2026 18:20:40 GMT

Part Number: TPS543C20

Hello,

I'm using the aforementioned part above and would like to run a simulation. However, I've been notified that the current file on your website is encrypted. Are you able to assist me with obtaining an unencrypted version or advise me on how to run the available version in LTSPICE?

AM2432: AM2432: Ethernet/IP - Stack Error Fatal

Stefano Villa — Wed, 09 Sep 2026 15:11:43 GMT

Part Number: AM2432

Hi all,

Sorry for reopening the ticket, but we have identified an issue during our cybersecurity testing activities.

Our cybersecurity lab observed that there may be vulnerabilities in the Texas Instruments EtherNet/IP stack. In particular, when a malformed Forward Open packet (or a similar malformed request) is received, the TI stack crashes and the device reboots.

Could you please investigate whether this issue is already known and whether any mitigation or fix is available?

As attachment you can find Python script with which you can see the issue.

Thank you.

CDEC_2066.zip

TS5A2066: PCBA Wash using Deionized Water or Kyzen A4625B

David Johnson — Wed, 09 Sep 2026 14:34:08 GMT

Part Number: TS5A2066

Can the following TI parts go thru a PCBA wash process using deionized water or kyzen A4625B? See attached list.

Wash_TI_Parts.xlsx

TPUL-KFACTOR-CALC: HSPICE file, sn74lvc1g123.inc

Umesh Swamy — Wed, 09 Sep 2026 13:37:55 GMT

Part Number: TPUL-KFACTOR-CALC
Other Parts Discussed in Thread: SN74LVC1G123

Hi,

While I fail to generate symbol out of sn74lvc1g123 HSPICE files available in www.ti.com/.../SN74LVC1G123

What could be possible way to use the encrypted file sn74lvc1g123.inc to simulate the SN74LVC1G123 functionality either in TINA or any other SPICE platform?

TPS7H1301EVM-CVAL-DOC-CERT: PSpice Model

Eli Bostelaar — Wed, 09 Sep 2026 13:31:44 GMT

Part Number: TPS7H1301EVM-CVAL-DOC-CERT

I am looking at adding a simulation model for the TPS60800QDRLRQ1 to be used in Altium Designer. The current model offered is encrypted and does not work in Altium so I was wondering if I could obtain the unencrypted model to use in Altium Designer.

Thanks!

PSPICE-FOR-TI: Encrypted SPICE model

Pierre Cassagne — Wed, 09 Sep 2026 12:51:34 GMT

Part Number: PSPICE-FOR-TI
Other Parts Discussed in Thread: LM61495

Hello,

For a work project, I would like to simulate the behaviour of the part LM61495. The SPICE model provided on your website is an encrypted PSPICE model. However I don't own a PSPICE licence. I only have Ltspice and TINA. Woudl it be possible to get an unencrypted version of this SPICE model ?

Thank you for your consideration.

Sincerely yours,

Pierre

UCC25661X-CALC: I am looking for UCC25661 LLC half bridge controller ic spice model

sushank sachan — Wed, 09 Sep 2026 08:59:21 GMT

Part Number: UCC25661X-CALC
Other Parts Discussed in Thread: UCC25661

Hello

can you please provide UCC25661 Spice model to simulate in SIMPLIS/SIMMETRIX software.

Thanks.

LM5116: LM5116 Drawing Clarification

Roshni Patil — Tue, 08 Sep 2026 23:26:00 GMT

Part Number: LM5116

There are two drawings (PWP (R-PDSO-G20) and PWP0020A) for this part in the datasheet. Which dimensions should be used for height, 1.1mm or 1.2mm? And which dimensions should we use for lead length, 0.50min to 0.75max or 0.5min to 0.7max? Thank you!

TMDSEMU110-U: TMDSEMU110-U urgent needed

Manu36 — Tue, 08 Sep 2026 10:34:12 GMT

Part Number: TMDSEMU110-U

Hello,

As other people on the forum, TMDSEMU110-U is visualy out of stock on TI.com.

From what I can read here :

https://e2e.ti.com/support/tools/code-composer-studio-group/ccs/f/code-composer-studio-forum/1676559/tmdsemu110-u-tmdsemu110-u-stock-and-error-216?tisearch=e2e-sitesearch&keymatch=TMDSEMU110-U#

It looks like the stock exist and it is an inventory allocation problem. As recommended, I send mails to sales@ti.com but I don't receive any answers.

We need urgently the probe, how can we order it?

Regards.

PSPICE-FOR-TI: THS4536 PSpice model missing and SLVMET3.ZIP unavailable

Jamie Jansen — Tue, 08 Sep 2026 04:28:06 GMT

Part Number: PSPICE-FOR-TI
Other Parts Discussed in Thread: THS4536, TINA-TI

I’m working on a design that uses the THS4536RUN and would like to simulate the amplifier in PSpice for TI. I specifically need to evaluate its transient settling and stability around the feedback capacitors.

I found references to a THS4536 TINA-TI model called SLVMET3.ZIP, but the download no longer appears to be available. The support form also does not recognize THS4536, which is why I selected PSPICE-FOR-TI for the product field.

Would you be able to provide a PSpice-compatible model for the THS4536, or a copy of the SLVMET3.ZIP package?

Thanks!

LP887X-LP889X-DESIGN: LP8865Y

ROGERIO BENITES — Fri, 04 Sep 2026 19:56:11 GMT

Part Number: LP887X-LP889X-DESIGN
Other Parts Discussed in Thread: LP8865Y-Q1

Could you please send the LP8865Y driver calculation spreadsheet and also tell me how I can simulate this component in PSpice for TI?

PSPICE-FOR-TI: PSPICE FOR TI query - You have reached the concurrent device access limit. Too many devices are attempting to connect with the same access key.

Stephen Rynn — Fri, 04 Sep 2026 14:28:21 GMT

Part Number: PSPICE-FOR-TI

Hello TI team,

I have reached the 3-machine installation limit for PSpice for TI.

My old computers are no longer in use so I cannot uninstall or deactivate them myself.

Could you please help deactivate all previous installations associated with my account so I can install PSpice for TI on my new computer?

TI account email: Stephen.rynn@stryker.com

Thank you very much.

Stephen

PSPICE-FOR-TI: concurrent device access limit with Access key.

Ilona — Fri, 04 Sep 2026 12:11:06 GMT

Part Number: PSPICE-FOR-TI

Hello,

While trying to install PSPICE for TI by entering the access key i receive an error saying:

I have not used the access key on any other device. The access key has been sent to my official TI email account.

Thanks for your support.

Best Regards,

Ilona

TINA-TI_ENGLISH: Tina-TI is Black listed from all of BAE Systems as they suspect that Tina90-Tien has an AI assisted component

John Scolari — Thu, 03 Sep 2026 17:24:01 GMT

Part Number: TINA-TI

Does Tina have a AI assisted component to it? How can we use it?

We use LTspice exclusively, but sometimes TI has good parts we might like to use.

This request cannot fulfill your wishes. Tina TI using AI in any form requires approval from security and the AI teams. This must be obtained separately and I cannot do that for you.

IT Asset Mgmt Anst Sr

MSPM0-SDK: MSPM0G3105 with XDS110: Unable to load program

Martin Simoneau — Thu, 03 Sep 2026 16:43:53 GMT

Part Number: MSPM0-SDK
Other Parts Discussed in Thread: MSPM0G3105, UNIFLASH, LP-MSPM0G3507

I am using CCS 20.5 and the XDS110 USB Debug Probe.

The design uses a MSPM0G3105. The cpu is fresh from factory (it never been programmed with any code or configuration).

All the signals to the 10-pin debug connector are connected as indicated in the documentation:

Pin 1 = VTREF (connected to the board's 3.3V)

Pin 2 = SWDIO

Pin 4 = SWCLK

Pins 3, 5, 7, 9 = GND

Pin 10 = nRST

The .ccxml file is configured for SWD Mode and Target Supplied Power. I even reduced the frequency to 100 kHz.

In CCS, if I select Run/Debug Project, the session starts, but when it tries to load the program, it stalls at PT_LOAD[0]: 0 of 2344 at 0x0.

I tried "Start Project-less Debut", then Connect Target on the CORTEX_M0P thread. After that, I get the same result if I go through Run/Load Program.

I used the "Test Connections..." button in the advanced properties of the ccxml file and it says the SWD Mode Integrity test has succeeded.

I get the same results if I use UniFlash.

I verified my XDS110 USB probe is working properly with a LP-MSPM0G3507 Development Kit. It worked as expected and I was able to load and run a program in the CPU.

I need help with this issue (I tried multiple PCBs).

MSPM0-SDK: Question About Lin behavior MCAL 1.0 , lin driver 1.5.0

Youssef Ghorab — Thu, 03 Sep 2026 08:12:44 GMT

Part Number: MSPM0-SDK

We are currently experiencing an issue after integrating LIN 1.5 with AUTOSAR 4.4 to support slave functionality.

Our configuration is set up with Autobaud rate enabled (True) and an autobaudratethreshold of 2. However, we are observing systematic, random response error bit toggling on the LIN bus.

During debugging, I noticed that the LIN driver is reporting both LIN_ERR_HEADER and LIN_ERR_RESP_STOPBIT.

Could you please provide your insights or support on this behavior?

Find attached MCU and Lin Xdm files

config.zip

After analaysis we found out

The root cause of the timing issues and the resulting LIN_ERR_HEADER tolerance violations is directly tied to the use of the internal clock.

The Hardware Reality: In your Mcu_PBcfg.c file, your microcontroller is configured to use the internal system oscillator (MCU_MCLK_SOURCE_SYSOSC) and the external clock is explicitly disabled (Mcu_ClkExternalClkEnabled = FALSE). Internal RC oscillators naturally drift due to temperature changes and manufacturing tolerances.
The Measurement Flaw: The TI LIN driver uses your microcontroller's internal clock to count the width of the master's incoming sync pulses. If your internal clock speeds up or slows down due to drift, the number of counted ticks changes, making it look like the master's timing is wrong.
The Strict Driver: The 1.5.0 version of the Lin_Priv.c driver strictly enforces a +-1.5% timing tolerance rule. Because your internal clock drifts more than 1.5%, the measurement math fails, and the driver throws a LIN_ERR_HEADER

TPSM843B22: DETAILS ABOUT EFFECIENCY AT 15V IS A INPUT AND IOUT IS 0.05V AND VOUT IS 5V

BHAVANISH P — Wed, 02 Sep 2026 09:33:46 GMT

Part Number: TPSM843B22
Other Parts Discussed in Thread: TPS563252

I NEED TO DESIGN POWER TREE TO MY POWER BOARD FOR THAT I USED TPSM843B22RDGR BUCK CONVERTER INPUT VOLTAGE IS 15V AND OUTPUT VOLTAGE IS 5V AND OUTPUT CURRENT IS 0.05 A

for that i need effeciency value....

thanks

Bhavanish P

LM25184-Q1: Request for Unencrypted LM25184-Q1 PSpice Transient Model Under NDA

Suvansh Malik — Tue, 01 Sep 2026 11:36:17 GMT

Part Number: LM25184-Q1

Hello TI Support Team,

I am currently developing a 24 V input, 12 V / 1 A PSR flyback converter based on the LM25184-Q1 for an automotive application.

I am using the official LM25184-Q1 PSpice transient model (SNVMC00.ZIP) provided on the TI product page. However, the publicly available model is encrypted, which prevents me from using it in my intended simulation environment for detailed circuit verification.

I would like to request the official unencrypted LM25184-Q1 PSpice transient model, subject to the applicable TI NDA/confidentiality requirements.

The purpose of the model is to verify the functionality and electrical behavior of our 24 V → 12 V / 1 A flyback converter before proceeding to EMI optimization and CISPR 25 Class 4 validation.

Our design uses the LM25184-Q1 together with the following components:

Würth Elektronik 750318701 flyback transformer
STPS3L60UY Schottky rectifier
744841414 common-mode choke
External protection, snubber and EMI-filter components

We would like to use the actual LM25184-Q1 device model, rather than substituting another controller, so that the simulation accurately represents the intended design.

Please let me know what information or NDA documentation is required from our company to obtain the unencrypted model.

Thank you.