Simulation, hardware & system design tools forum - Recent Threads

LMR51635-CALC: Unencrypted SPICE file for LMR51636XDDCR

Michael Wall — Fri, 29 May 2026 19:29:46 GMT

Part Number: LMR51635-CALC

Hello, I would like to have access to the unencrypted SPICE file for the LMR51636XDDCR. I saw that I can recieve one if I sign an NDA. Let me know where I can do that.

Thanks!

TPS6289X-Q1-DESIGN: Webench Power Designer - for TPS62442RQRR

Kua Cha — Fri, 29 May 2026 12:46:33 GMT

Part Number: TPS6289X-Q1-DESIGN

TI Support Team

I need to use your Webench Power Designer to simulate the TPS62442RQRR, so that I can get all the components values. However, the Webench says, "Hmm we found TPS62442 but it is not supported in this tool." Could you help to resolve this issue.

Thank you.

UCC28C43-Q1: TIDA-01505 startup issue with optocoupler version

Vincenzo Pio De Marco — Fri, 29 May 2026 09:58:57 GMT

Part Number: UCC28C43-Q1
Other Parts Discussed in Thread: TIDA-01505, , UCC28C43

Hello,

we are debugging a board based on the TIDA-01505 reference design, using only the flyback with optocoupler version.

The converter is expected to start from low input voltage, around 40 VDC, as described in the TIDA-01505 design guide. The UCC28C43-Q1 should start when VDD exceeds the UVLO threshold, around 8.4 V.

At the moment we observe the following behavior.

With the original configuration, applying VIN_HV = 40–60 VDC, the voltage on C54 / UCC28C43 VDD does not rise correctly. It remains around 1.8–2.7 V, so the controller does not start.

We verified that the UCC28C43-Q1 itself is functional:

by externally supplying C54/VDD with 10 V, the controller starts correctly;
VREF = 5 V is present;
COMP ≈ 6.3 V;
CS = 0 V;
OUT pin switches correctly

Therefore, the UCC28C43 and its oscillator/control section appear to be working.

We then checked the HV startup circuit:

Q9 was checked and appears correctly mounted and functional;
Q11 does not appear to be forcing Q9 off;
removing D35 did not change the issue;
the HV startup resistor chain is not open. For example, with VIN_HV = 60 V we measured approximately:
- high side of R48: 21.5 V
- low side of R48 / high side of R49: 11.4–11.5 V
- low side of R49: 3 V
- Q9 pins around 3 V / 2.6 V / 1.85 V
- C54 around 1.85 V

The important observation is related to the level-shifter branch:

If R59 is removed, C54/VDD rises to approximately 10 V with VIN_HV = 60 V.
If Q19 is removed and R87 is changed to 10 kohm,
C54/VDD can rise to about 9 V even from VIN_HV = 40 V.
However, when Q19 is mounted, C54/VDD collapses again to approximately 2.7 V.
Q19 was replaced with a new component, but the behavior did not change.
Removing R96 allows C54/VDD to rise to about 9 V, but without R96 the SiC gate is no longer driven, so R96 appears necessary for Q19 / level-shifter operation.
Changing R96 to 10 kohm still causes Q19 to become polarized and the startup remains blocked.
R87 was also tested as a stronger pull-up, for example 3 kohm, but the issue remained.
Measured VGS of Q19 is around −0.75 V in the problematic condition

So the current conclusion is that the Q19/R96/R87/R59 level-shifter branch loads or clamps the VDD/startup node during startup, preventing C54 from reaching the UCC28C43 UVLO turn-on threshold.

Could you please clarify the intended startup behavior of this branch in the optocoupler version of TIDA-01505?

In particular:

Are R58/R59 intended to be mounted as 0 ohm links in the default optocoupler configuration, or are they only for a specific level-shifter supply option?
Is the level shifter supply expected to be pre-biased through J14 before applying the main HV input?
What are the correct default values / population options for R87, R96, R58, R59, Q19, and the related level-shifter startup components?
Is there any known correction or modification to the TIDA-01505 schematic/BOM for reliable startup from 40 V using the optocoupler version?
Based on the measurements above, which component or population option should be changed to prevent Q19 from pulling down the VDD/startup node during startup?

Thank you.

TPSF12C3QEVM: Availability of TPSF12C1/TPSF12C3

Ryota Morimoto — Fri, 29 May 2026 08:06:34 GMT

Part Number: TPSF12C3QEVM
Other Parts Discussed in Thread: TPSF12C1, TPSF12C3

Hello,

we cannot see Active EMI filters (TPSF12C1/TPSF12C3) datasheet. Are these components not continued?

Is there any other similar the active EMI filters?

Thanks.

Ryota

LMR36015: Design Verification of LMR36015ARNXR PCB layout sorrounding area

Souradeep Pal — Fri, 29 May 2026 08:00:41 GMT

Part Number: LMR36015

Hello,
Everyone,
I used LMR36015ARNXR for 48V to 12V conversion. I simulated (WEbench) based on the output current rating and find out 0.7watt loss in the IC.
Kindly find my circuit and pcb layout area of this IC. Is the design okay?

PSPICE-FOR-TI: PSPICE-FOR-TI: Concurrent device limit reached

jgorsk — Fri, 29 May 2026 07:27:50 GMT

Part Number: PSPICE-FOR-TI

Hello,

Can you reset the record for all my PCs so I can install TI PSPICE on a new PC please?

UCC14131-Q1-CALC: UCC5881-Q1: UCC5881 EMC SIMULATION spice model

hu xianke — Fri, 29 May 2026 02:24:21 GMT

Part Number: UCC14131-Q1-CALC
Other Parts Discussed in Thread: UCC5881-Q1

hello Andy

Could you share me UCC5881-Q1: UCC5881 EMC SIMULATION spice model ?

HALCOGEN: Halcogen support and patches

Nick Daggitt — Thu, 28 May 2026 12:19:14 GMT

Part Number: HALCOGEN
Other Parts Discussed in Thread: LAUNCHXL2-570LC43

Hi,

From the download page it appears that Halcogen has not received security patches/updates since 2019, can I ask what support is available for this tool?

We are looking at using it along with some LAUNCHXL2-570LC43 boards for a project, but it is difficult for us to justify installing when considering our UK Cyber Essentials security policies. It would be great to know if there is any ongoing support at TI for mitigating against potential vulnerabilities in the software.

Kind regards,

Nick

PSPICE-FOR-TI: PSPICE-FOR-TI: Request to reset access limits

Leslie Cheung — Thu, 28 May 2026 10:26:38 GMT

Part Number: PSPICE-FOR-TI

Hi TI team

I needed to install PSPICE for TI on the new computer which replaced the old one. I got the error saying concurrent device access limit has been reached. Could you please help reset the access device?

Many thanks,

Leslie

PMP23391: PMP23391 Evaluation Board Design and Simulation Files

Remigiusz Kolodziejski — Thu, 28 May 2026 08:45:46 GMT

Part Number: PMP23391
Other Parts Discussed in Thread: TINA-TI

Hello TI Team,

I am evaluating the PMP23391 reference design. To accelerate my development, could you please share the following files:

Altium Design Files: Full package (.SchDoc, .PcbDoc, .PrjPcb).
Simulation Models: PSpice, TINA-TI, or LTSpice files for this design.

If these cannot be shared publicly, please send them via private message or email.

Thank you for your support.

Best regards,

Remigiusz

AM625: Is it possible to duplicate the LVDS output from the AM625's tiDSS to HDMI? (Clone, not extension)

yong jin gueon — Thu, 28 May 2026 06:39:37 GMT

Part Number: AM625

Hello,

We are using TI-SDK version: 11.02.08.02, release date: 2025. 12. 15, and Yocto 5.0 (ScarthGap).

As mentioned in the title of the question, we are attempting to duplicate the LVDS output directly to HDMI.

Weston does not function properly when using the same-as=LVDS-1 option as shown in the weston.ini below.

If you have any suggestions on a good way to perform screen duplication, I would appreciate it.

Thank you.

[core]
backend=drm-backend.so
xwayland=true
idle-time=0

[shell]
locking=false

[output]
name=LVDS-1
mode=1920x1080@60
primary=true
#transform=rotate-90

[output]
name=HDMI-A-1
mode=1920x1080@6
same-as=LVDS-1

[libinput]
touchscreen_calibrator=true
calibration_helper=/bin/echo

MSPM0G3519: Require .svd file for MSPM0G3519

Krishna Palepu — Wed, 27 May 2026 20:20:43 GMT

Part Number: MSPM0G3519

Currently we are using the J_Link Ozone, were unable to see the Peripherals Data, Require .svd file for MSPM0G3519 to help us reading the values from registers while debugging in our tool.

Can you please help with this

PSPICE-FOR-TI: Max licenses in use.

Sean Bietz — Wed, 27 May 2026 17:27:51 GMT

Part Number: PSPICE-FOR-TI

I need to reset my license use, I have replaced my PC and need to install the software. Thanks.

PMP23547: Need altium file for PMP23547

atul pandey — Wed, 27 May 2026 13:10:28 GMT

Part Number: PMP23547

i am looking for the complete Altium design files (schematic and PCB source files) for PMP23547 reference design for my 6KW product desgin as reference.

Request you to please share the complete Altium source files (.PrjPcb, .SchDoc, .PcbDoc, libraries, and related fabrication design files) for hardware evaluation, layout study, and design reference purposes.

If the files are not publicly available, kindly let us know the process for obtaining them or whether they can be shared offline under request.

LM5163-LM5164DESIGN-CALC: Request for Approval – PSPICE for TI Tool

Iyyanar Veerappan — Wed, 27 May 2026 09:17:37 GMT

Part Number: LM5163-LM5164DESIGN-CALC

I have submitted a request to TI to download the PSPICE for TI simulation tool for circuit analysis purposes. I have properly followed the download request procedure; however, I have not yet received approval from the TI side. I have been waiting for more than 48 hours.

Kindly request you to approve my request for accessing the PSPICE for TI tool.

LM25139-DESIGN-CALC: WEBENCH Power Designer schematic incorrect

Stephen Gordon — Wed, 27 May 2026 04:39:39 GMT

Part Number: LM25139-DESIGN-CALC
Other Parts Discussed in Thread: LM25139-Q1EVM-440

The schematic has ISENSE pin connected after the shunt, and VOUT pin connected between inductor and shunt. According to the datasheet and the schematic for the evaluation board (LM25139-Q1EVM-440), it should be the other way around.

LM65680-Q1EVM: I request for ECAD files for LM65680-Q1 EVM

Snigdha Pannir — Tue, 26 May 2026 20:42:48 GMT

Part Number: LM65680-Q1EVM
Other Parts Discussed in Thread: LM65680-Q1

Hello TI Support Team,

I hope you are doing well.

I am currently working on a PCB design using the LM65680-Q1 device and would like to request the ECAD design files/PCB footprint files for this component. I am specifically looking for the schematic symbol, PCB footprint, and any available layout or reference design files compatible with EDA tools such as EasyEDA/Altium/KiCad.

I checked the product page and datasheet but could not locate the complete ECAD resources.

Could you please share the available ECAD files or guide me to the correct resource link?

Thank you for your support and assistance.

TINA-TI_ENGLISH: TLV6003 simulation in TI-TINA

Signal — Tue, 26 May 2026 16:15:55 GMT

Part Number: TINA-TI
Other Parts Discussed in Thread: TLV6003

Hello,

How can I import a model for the TLV6003 into TI-TINA?

BQ79600EVM: Defective unit of BQ79600EVM-030

Chau Sirimoungkhoune — Tue, 26 May 2026 16:14:34 GMT

Part Number: BQ79600EVM
Other Parts Discussed in Thread: USB2ANY

Hello,

We have a defective unit of BQ79600EVM-030.
For your reference TI order number: T06412996.
Please see the defect details below and advise on RMA.

Issue found: we connect to the board using a connector called USB2Any (also TI's product). As soon as the USB2Any gets connected to it, nFAULT LED is triggered.

Then when supplying power to it (5V or 12V), the nFAULT LED shuts down but when receiving the Wake Up ping, the board is not able to be awaken (indicated by another LED).

We tried verifying if the there was an issue with the set-up we are currently using, but when connecting the other ones we have to the same hardware, they work as expected.

(The nFAULT is not immediately triggered and we are able to wake the device up).

We also varied the placements of the jumpers to explore different configurations available, but the behavior persisted and there is no clear damage to the board as far as I could see.

Let me know if you need any more information.

TMDSEMU200-U: Unable to detect in Device Manager

Venu CK — Tue, 26 May 2026 13:43:37 GMT

Part Number: TMDSEMU200-U

CUSTOMER ISSUE :

P/n: TMDSEMU200-U

"When we connected the Debugger first time to the Host PC, the power LED
on the debugger does not turn on and the device is also not detected in
the PC Device Manager under USB devices."

LMR51440-CALC: Request for the simplis library for the LMR43610 part

PYOUNGJO PARK — Tue, 26 May 2026 05:45:18 GMT

Part Number: LMR51440-CALC
Other Parts Discussed in Thread: LMR43610

I intend to perform DCDC circuit analysis using the SIMPLIS tool.

I would like to request the sharing of the SIMPLIS library for the LMR43610 component.

TPS552892-CALCULATION-TOOL: Request for the simplis library for the TPS552892 part

PYOUNGJO PARK — Tue, 26 May 2026 05:39:13 GMT

Part Number: TPS552892-CALCULATION-TOOL
Other Parts Discussed in Thread: TPS552892

I intend to perform DCDC circuit analysis using the SIMPLIS tool.

I would like to request the sharing of the SIMPLIS library for the TPS552892 component.

TPS563203: Failing in RE test

Mitesh Doshi — Mon, 25 May 2026 04:27:49 GMT

Part Number: TPS563203

Good morning…!!

In RE test, we have certain observation as attached.

Graph above 100MHz is due to buck converter, (before that it is related to our other circuit, confirmed by doing RE test on this board only) requesting you to suggest modification for bringing graph below limit line.

Attached schematic for your ready reference.

PSPICE-FOR-TI: PSPICE-FOR-TI: Too many machines attempting to connect with the same access key

Atsushi Kawakami — Mon, 25 May 2026 02:51:00 GMT

Part Number: PSPICE-FOR-TI

Hi,I uninstalled an old version of PSpice for TI and tried to reinstall the latest version on the same PC.

However, I received the error message: "Too many machines attempting to connect with the same access key".

Could you please clear/disable all of my previous machine records so that I can proceed with the new installation?

Thank you.

LMR36500-DESIGN-CALC: Irregular Circuit Error TINA-TI

Sean Bietz — Fri, 22 May 2026 14:50:43 GMT

Part Number: LMR36500-DESIGN-CALC
Other Parts Discussed in Thread: LMR36520, TINA-TI

The unencrypted PSpice model of the LMR36520 throws the following error during simulation:

This same error occurs when a Webench simulation is exported then run inside TINA-TI.

Simulation files attached, thanks for the assistance.

lmr36520_webench_design_1033460_140.TSC

lmr36520_3v3_reg.TSC