https://e2e.ti.com/support/tools/simulation-hardware-system-design-tools-group/sim-hw-system-design/Jump start system design and speed time to market with comprehensive designs including schematics or block diagrams, BOMs, design files and test reports. Connect here to the experts with deep system and product knowledgeen-USTelligent Community 13https://e2e.ti.com/support/tools/simulation-hardware-system-design-tools-group/sim-hw-system-design/f/simulation-hardware-system-design-tools-forum/1673188/pspice-for-ti-cant-install-psipce_for_tiThu, 13 Aug 2026 23:28:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:f81f7194-7b7b-4ea0-b14b-6cd10cade8e6Tchernio BoytchevPart Number: PSPICE-FOR-TIPSPICE-FOR-TIhttps://e2e.ti.com/support/tools/simulation-hardware-system-design-tools-group/sim-hw-system-design/f/simulation-hardware-system-design-tools-forum/1665047/am67-am67-serdes-refclk-ibis-and-ibis-ami-models/6450299Thu, 13 Aug 2026 19:23:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:585f21f6-4ab9-4c69-bed6-65b00a4826d4Nicolas RancherWe are not particularly looking for a SERDES SI combination simulation (this would be nice however). We just want the model to simulate the transient of this CLK for layout simulations.https://e2e.ti.com/support/tools/simulation-hardware-system-design-tools-group/sim-hw-system-design/f/simulation-hardware-system-design-tools-forum/1665047/am67-am67-serdes-refclk-ibis-and-ibis-ami-models/6450027Thu, 13 Aug 2026 15:54:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:86ccac86-d6f2-4bad-b00d-8880df01ac7eKallikuppa SreenivasaHello Nicola Rancher, As i am checking internally regarding the above question, out expert has the below query, can you please answer. Now that I understand the context better, the first question I would ask the customer is why are they looking to simulate the REFCLK? It is generally a 100MHZ signal and does not play a part in any SI simulations for the SerDes data lanes unless one is doing involved Clk-data recovery type checks. Regards, Sreenivasahttps://e2e.ti.com/support/tools/simulation-hardware-system-design-tools-group/sim-hw-system-design/f/simulation-hardware-system-design-tools-forum/1672724/tps562231-lt-spice-model/6449971Thu, 13 Aug 2026 15:26:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:4affe9f6-a6b4-4668-9168-971a7a400a18Alla UshasriHi Kai, We generally don't have LT-Spice Models, you can install PSPICE FOR TI which is free version and run your simulations. PFA Link: PSPICE-FOR-TI Simulation tool | TI.com Regards, Usha.https://e2e.ti.com/support/tools/simulation-hardware-system-design-tools-group/sim-hw-system-design/f/simulation-hardware-system-design-tools-forum/1669422/tusb8041-q1-usb-hub-ethernet/6449954Thu, 13 Aug 2026 15:14:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:d0abea64-13c8-4eab-84b1-96e32074440cRyan KittoHi Juan, [quote userid="584599" url="~/support/tools/simulation-hardware-system-design-tools-group/sim-hw-system-design/f/simulation-hardware-system-design-tools-forum/1669422/tusb8041-q1-usb-hub-ethernet/6449482"]What would be the correct value?[/quote] I would recommend the 4.7Kohm resistor value for the PORT pin. While the 200Kohm value does likely work, we use 4.7Kohm typically, and it is the value used in our EVMs. Thanks, Ryanhttps://e2e.ti.com/support/tools/simulation-hardware-system-design-tools-group/sim-hw-system-design/f/simulation-hardware-system-design-tools-forum/1667231/tusb320-tusb320irwbr-hardware-design-related/6449931Thu, 13 Aug 2026 14:59:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:fb83125b-dfa5-482b-a6ec-8867437b3d19Vishesh PithadiyaHi, The TUSB320/ PD controller is required if you are looking to implement the DRP functionality.https://e2e.ti.com/support/tools/simulation-hardware-system-design-tools-group/sim-hw-system-design/f/simulation-hardware-system-design-tools-forum/1670334/pspice-for-ti-ti-fets-failing-to-converge/6449752Thu, 13 Aug 2026 13:08:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:3a3f7085-ad4f-465a-a544-d6382c5855e4John Wallace1Hi Rob, Thanks for the response. I was not involved in creating the FET models. Yes, there have been some instances where simulations had convergence issues. The models are correlated to the datasheet using static conditions (not switching) and this issue was not known at the time. I'm trying to create a simplified model to get around the convergence issue. All of the FETs that the simulation works with do not use the tabulated capacitor models. The ones that do not converge use the tabulated capacitor models. I'm having some difficulties as the commercially available PSpice is crashing on my PC. I can try PSpice for TI or TINA-TI (they use basically the same engine for simulations). However, PSpice for TI may not like a FET model that is not "signed" by TI. TINA-TI is easier for this task as it does not care where the model originates but I would have to recreate the circuit model. Give me a day or two to work on this. Thanks, Johnhttps://e2e.ti.com/support/tools/simulation-hardware-system-design-tools-group/sim-hw-system-design/f/simulation-hardware-system-design-tools-forum/1673035/tps55340-tps55340-random-failaturesThu, 13 Aug 2026 12:07:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:e17269b5-748c-4623-bd7d-19594bdb2e10Žiga GazvodaPart Number: TPS55340 Hello. A little bit of background: the design shown below has already been used in more than 1,000 units and has been working normally with identical schematics and PCB layouts. Now, the only difference is the batch (different order) of TPS55340 ICs. Ever since we received a new batch of TPS55340s, approximately 1–2 out of every 10 units fail, after first IC enable. Some ICs simply stop working, but most have Vin shorted to GND. Some visibly blow up around pin 2-3 and produce a significant amount of smoke, some have the same failature but without visible damage (3 images of failature shown next) If we replace the IC, the same PCB works correctly afterward. For every PCB that stopped working, the IC pads were inspected using X-ray imaging, which confirmed that all pads were soldered correctly. Why would this be happening? Is it posible the batch of ICs is corrupted? Thank you. Žg.AppliancesTPS55340https://e2e.ti.com/support/tools/simulation-hardware-system-design-tools-group/sim-hw-system-design/f/simulation-hardware-system-design-tools-forum/1670334/pspice-for-ti-ti-fets-failing-to-converge/6449486Thu, 13 Aug 2026 08:27:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:69b6eef9-f484-4c46-b9b6-bd62277362d8Robin Davis1Hi John. Thanks for the effort you are putting in. If these models are failing to converge is there any point in even having the model available. It may be more accurate , but you can’t run it so what’s the point? Do I need to run another spice program like Tina to make them work? Cheers Robhttps://e2e.ti.com/support/tools/simulation-hardware-system-design-tools-group/sim-hw-system-design/f/simulation-hardware-system-design-tools-forum/1669422/tusb8041-q1-usb-hub-ethernet/6449482Thu, 13 Aug 2026 08:24:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:7ad5e546-ca7c-4dc4-8948-6109a008da32Juan Jacinto MontenegroHi Ryan Kitto, Thank you for the information you have provided. I am implementing Type C as a downstream (DFP) connection for one of the HUB’s downstream ports. According to the HD3SS3220IRNHR datasheet, the following pull-up value is recommended for the PORT pin: Furthermore, based on the calculations made for Vih = VDD5 – 0.3; Iih = 20 µA; VDD5 = 5 V, I get that R must be less than 15 kΩ. However, in the same datasheet, in the example for DFP mode, they show the following circuit with a 200 kΩ pull-up resistor: What would be the correct value? Best regards, Juanhttps://e2e.ti.com/support/tools/simulation-hardware-system-design-tools-group/sim-hw-system-design/f/simulation-hardware-system-design-tools-forum/1672948/ucc28750-simplis-ucc28730-emotors-france-pspice-for-ti-simulation-developpement-issueThu, 13 Aug 2026 08:00:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:7b43c8c5-a013-470d-b842-5d4b5ea44e1eFranck SALAHOUPart Number: UCC28750-SIMPLIS Other Parts Discussed in Thread: UCC28730 Hello, I am currently investigating EMI propagation and electrical compliance for one of our products, which uses this controller in one of its power supplies. To achieve this, I need a fully functional simulation featuring the UCC28730 controller. However, I have been unable to get my own simulation working with this specific component model. Could you please provide a working simulation project ? I will then adjust it step-by-step to match our specific practical case. Thank you in advance for your help. Best regards, Franck Akanni SALAHOU Product Engineer at EmotorsUCC28730UCC28750-SIMPLIShttps://e2e.ti.com/support/tools/simulation-hardware-system-design-tools-group/sim-hw-system-design/f/simulation-hardware-system-design-tools-forum/1667231/tusb320-tusb320irwbr-hardware-design-related/6449446Thu, 13 Aug 2026 07:45:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:6b84308b-3e35-4b1a-8d54-1fa9bcb1e8bbakhil haridashi, Is the TUSB320 IC required for the USB Type-C interface to function, particularly for the ID signal functionality and VBUS control.https://e2e.ti.com/support/tools/simulation-hardware-system-design-tools-group/sim-hw-system-design/f/simulation-hardware-system-design-tools-forum/1671789/msp430-flasher-unable-to-download-msp430-fet-driver-for-msp-fet-on-windows/6449179Thu, 13 Aug 2026 02:34:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:a6401126-f838-4c4c-ab87-d81b7088d268Janz BaiSounds good, Umesh.https://e2e.ti.com/support/tools/simulation-hardware-system-design-tools-group/sim-hw-system-design/f/simulation-hardware-system-design-tools-forum/1672832/pspice-for-ti-concurrent-device-access-limitWed, 12 Aug 2026 21:38:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:6f53c573-ee24-4c38-b6d1-d623cd741286Thomas BennettPart Number: PSPICE-FOR-TI Hello, Could I get help removing all my old devices for my access key so I can install PSPICE? Thank you! Take care, ThomasPSPICE-FOR-TIhttps://e2e.ti.com/support/tools/simulation-hardware-system-design-tools-group/sim-hw-system-design/f/simulation-hardware-system-design-tools-forum/1669422/tusb8041-q1-usb-hub-ethernet/6448962Wed, 12 Aug 2026 21:35:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:f1ca9f52-0ae1-4ca5-a8db-2c89f7cf521aRyan KittoHi Juan, [quote userid="584599" url="~/support/tools/simulation-hardware-system-design-tools-group/sim-hw-system-design/f/simulation-hardware-system-design-tools-forum/1669422/tusb8041-q1-usb-hub-ethernet/6448364"]What would be the correct connection for that pin?[/quote] This pin can be left floating, a PD resistor is not required. [quote userid="584599" url="~/support/tools/simulation-hardware-system-design-tools-group/sim-hw-system-design/f/simulation-hardware-system-design-tools-forum/1669422/tusb8041-q1-usb-hub-ethernet/6448364"]The same applies to the GANGED/SMBA2/HS_UP, TEST signals[/quote] You can also leave this pin floating. [quote userid="584599" url="~/support/tools/simulation-hardware-system-design-tools-group/sim-hw-system-design/f/simulation-hardware-system-design-tools-forum/1669422/tusb8041-q1-usb-hub-ethernet/6448364"] We should not connect the pull-up resistors on PWRCTLx_BATENx associated with Battery Charging mode. Since Battery Charging mode would not be enabled on any downstream port, the AUTOENz function would not be required. AUTOENz can therefore be left unconnected , relying on its internal pull-up, which corresponds to 1 = Automatic Mode is disabled . [/quote] Yes, your understanding is correct. Both these pins can be left floating if their respective functionality is not being used. Thanks, Ryanhttps://e2e.ti.com/support/tools/simulation-hardware-system-design-tools-group/sim-hw-system-design/f/simulation-hardware-system-design-tools-forum/1672611/lm2576-lm2576-validation-test-bench/6448714Wed, 12 Aug 2026 18:07:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:0b983f70-76ac-4f7a-81dc-9566b5402557Oscar AmbrizHello Cyprien, The zip file provided on the product page has a good starting point for load transients, i recommend using the .opj file as a starting point. The model should be good to give a visual representation of the switch node and inductor current shape. Efficiency is not properly simulated in the model usually due to idealities in the model, the full scope of losses are at times not modeled. I would recommend getting an estimate for efficiency through the webench model listed in the product page. Regards, Oscar Ambrizhttps://e2e.ti.com/support/tools/simulation-hardware-system-design-tools-group/sim-hw-system-design/f/simulation-hardware-system-design-tools-forum/1672724/tps562231-lt-spice-model/6448675Wed, 12 Aug 2026 17:17:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:8da4da8d-fc52-4637-a020-4259a0b0bdb2Alla UshasriHi Kai, Will check and get back to you! Regards, Usha.https://e2e.ti.com/support/tools/simulation-hardware-system-design-tools-group/sim-hw-system-design/f/simulation-hardware-system-design-tools-forum/1672616/lm5146-q1-evm12v-lm5146-design-package-request-48-v-to-12-v-8-a-and-48-v-to-24-v-8-a/6448654Wed, 12 Aug 2026 16:59:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:e74eb4f5-9b9c-40c4-ae38-e9ce73afdc1bOnkar BhakareHello Maryam LM5146 QuickStart calculator tool is excellent starting point - LM5146DESIGN-CALC Calculation tool | TI.com . I suggest using it to get the starting values of component. Additionally, for 8A you could go for converter solution. Check - LM70880 Thank you Regards Onkar Bhakarehttps://e2e.ti.com/support/tools/simulation-hardware-system-design-tools-group/sim-hw-system-design/f/simulation-hardware-system-design-tools-forum/1672582/sn74lvc1g3157-s-parameter-model-required/6448625Wed, 12 Aug 2026 16:28:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:c1f2afa3-cf59-437d-812a-d6db973e6400Nir GilgurHello Saiyed, We don't have an SP model for this product. The best solution we can offer is for you to create one using passive components as explained in this FAQ (most bottom paragraph). Thanks, Nirhttps://e2e.ti.com/support/tools/simulation-hardware-system-design-tools-group/sim-hw-system-design/f/simulation-hardware-system-design-tools-forum/1671699/msp430f67791a-energy-measurement-dc/6448595Wed, 12 Aug 2026 16:10:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:e0a49117-f049-40be-a60c-c485ce6e3ea7Luke LedbetterHi Bilal, You'd want to lower the sampling frequency, not the SMCLK frequency. The sampling frequency would change the frequency at when the calculations are executed. Did you get back the UART communication? You can also run a debug session while active to see if the code is getting stuck (I wouldn't believe it is). Regards, Luke