https://e2e.ti.com/support/power-management-group/power-management/f/power-management-forum/1633694/tpsi31pxq1evm-evaluation-board-design-filesTue, 07 Apr 2026 05:43:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:c9dc0c01-b9b4-4cc1-aa5f-0de24096ae57Tom QiuPart Number: TPSI31PXQ1EVM Hello, Would you please to share the design files of TPSI31PXQ1EVM? Best Regards, TomIndustrial AutomationTPSI31PXQ1EVMhttps://e2e.ti.com/support/clock-timing-group/clock-and-timing/f/clock-timing-forum/1633693/lmx2615-sp-pll-output-noise-issueTue, 07 Apr 2026 05:39:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:a8b40ce6-906b-4dfc-8fb3-8f70e5a22fd6Deepak AttriPart Number: LMX2615-SP Other Parts Discussed in Thread: LMX2615EVM-CVAL I am using LMX2615 PLL synthesizer IC. I have developed a circuit/PCB around LMX2615 following the your guidelines, replicating LMX2615EVM-CVAL board. While testing, I am able to generate clean 7GHz output. But at other output frequencies, I am observing too much noise(band of frequencies). Screen shots attached. Keep every thing same, if I just replace by board with LMX2615EVM-CVAL board, I am observing clean output. Why is it so? What should I do to have clean output?LMX2615-SPLMX2615EVM-CVALhttps://e2e.ti.com/support/processors-group/processors/f/processors-forum/1633692/j784s4xevm-tda4vh-evm-no-uart-console-output-in-any-boot-modeTue, 07 Apr 2026 05:39:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:b55d0cf3-5ec8-4e45-90fe-0ccd757fad23VADDEPALLY NIVAS NETHAPart Number: J784S4XEVM Other Parts Discussed in Thread: TDA4VH I am working with a TDA4VH (J784S4) EVM and I’m unable to get any serial console output despite the board appearing to power up correctly. I am using a 20V Benchtop DC Power Supply to ensure stable power. On power-up, LEDs LD4, LD7, LD9, LD10, and LD12 are all solid green. This suggests the Leo PMIC is healthy and the SoC has exited reset. I also see the Ethernet LEDs blinking, so the board isn't completely "dead," but the UART remains totally silent. My Linux host detects the usual four instances ( /dev/ttyUSB0 to ttyUSB3 ), but I get no data on any of them at 115,200 baud. Troubleshooting already performed: UART Boot Mode Test: I set the switches to UART Boot ( SW11: 0, SW7: 0111 ) and removed the SD card. I checked all four /dev/ttyUSB ports, but none of them are printing the 'C' character. This is the main reason I suspect a hardware or bridge issue. Official SD Image: I used the TI SDK create-sdcard.sh script to flash a pre-built image (SDK v10.00.00.08) onto a 32GB card. I've verified tiboot3.bin , tispl.bin , and u-boot.img are in the BOOT partition, but still no logs in SD boot mode ( SW11: 1000 0010, SW7: 0 ). Environment: Verified with multiple micro-USB cables and different PC ports. I have also ensured brltty and ModemManager are disabled on my Linux machine to avoid port contention. Since I can't even get the ROM "C" characters in UART boot mode, could this be a failure in the onboard FTDI bridge or an issue with the SOM-to-Carrier connection? Please let me know how to proceed or if an RMA is necessary.J784S4XEVMTDA4VHhttps://e2e.ti.com/support/power-management-group/power-management/f/power-management-forum/1629197/tps2663-tps26630rger-ic-burns-while-testing/6297814Tue, 07 Apr 2026 05:36:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:d4a19afe-fa46-466f-8b62-5c7e7d08ed94Amrit JitHi Divya, You are correct. I got confused IMON with IMON. Sorry for the confusion. SHDN has internal pull-up. You don't need to connect to VIN. Remove the input pull-up resistance. Thanks Amrithttps://e2e.ti.com/support/motor-drivers-group/motor-drivers/f/motor-drivers-forum/1633686/mcf8329hs-q1-mcf8329hsovermodulation/6297812Tue, 07 Apr 2026 05:34:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:69d0c1f1-9d81-424d-ab73-93933cfafa44Venkatadri Shantaram84961Hi Can you explore SmartTue feature to tune the motor with MCF8329HS-Q1? Can you post motor data sheet and JSON file? Also please verify whether DC bus voltage is sufficient? We can leverage flux weakening / MTPA feature in MCF8329HS to improve the speed. Thanks and Best regards Venkatadri Shttps://e2e.ti.com/support/power-management-group/power-management/f/power-management-forum/1633691/tps62240-question-about-en-pin-of-tps62240Tue, 07 Apr 2026 05:34:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:87731260-8ac6-4cb5-898c-fc4295aee212Kazuya Nakai59Part Number: TPS62240 Hello guys, One of my customers is considering using TPS62240 for their new products. At this moment, they have the following question. Could you please give me your reply? Q. I would like to know the behavior when the EN terminal becomes L level about 10us duration. When EN=L, I think the switching stops and the output voltage decreases. However, this is not a problem for us. It was not written that this device has a prebias function, so when the EN terminal returns to H, will the device be damaged? Also, when the EN terminal returns to H, I am worried about latch up or output oscillation. Is there any problem when EN pin level is go back to H level? Your reply would be much appreciated. Best regards, Kazuya.TPS62240Industrial Automationhttps://e2e.ti.com/support/microcontrollers/c2000-microcontrollers-group/c2000/f/c2000-microcontrollers-forum/1623529/tms320f28374d-controller-is-not-detecting/6297813Tue, 07 Apr 2026 05:34:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:c2d3c191-c583-44ff-b575-b7af2d75e3b2Vasu ManiHello, Any inputs / suggestions for us to tryhttps://e2e.ti.com/support/power-management-group/power-management/f/power-management-forum/1633689/ucc28180-too-large-output-capacitor-at-output-of-ucc28180-pfc-icTue, 07 Apr 2026 05:32:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:e5434df8-fc89-4a90-8e50-77831b4b42f5Vikram BishtPart Number: UCC28180 Dear TI team I have designed a boost PFC circuit using Texas Instruments Webench with an input voltage range of 85–265 V and an output specification of 390 V, 1.15 A. However, I noticed that the output capacitor value suggested by Webench is 10 mF, which seems impractical. In comparison, the evaluation board for the same IC uses a 270 µF capacitor for 360W output. I would like to understand the reason behind such a significant difference in capacitor values. please find below link & Snapshot Power Designer Additionally, I observed that this IC does not include built-in over-temperature protection (OTP). If OTP is required in the design, could you please guide me on the recommended approach to implement it?UCC28180power deliveryhttps://e2e.ti.com/support/power-management-group/power-management/f/power-management-forum/1631337/tps51386-tiger-lake-pmic-replacement-by-discrete-powering-scheme/6297809Tue, 07 Apr 2026 05:30:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:a98fa68b-7b2e-42d4-ac1c-ade702ad8da0Hitesh ChandwaniHello Isaac, you can refer this app note Non-Isolated Point-of-Load Solutions for Tiger Lake in PC Applications (Rev. B) -Hiteshhttps://e2e.ti.com/support/processors-group/processors/f/processors-forum/1629387/am62a7-not-able-to-detect-nor-flash-x8-ospi-in-sdr-mode/6297807Tue, 07 Apr 2026 05:27:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:5d1ad054-f6ef-4f33-802b-1451edab5169Vinuchandran A VHi Tejas, [quote userid="645340" url="~/support/processors-group/processors/f/processors-forum/1629387/am62a7-not-able-to-detect-nor-flash-x8-ospi-in-sdr-mode/6296794"] Thread you suggested is related MT35XU02GCBA1G12-0AAT boot mode is x8 SDR mode. [/quote] The boot mode is actually SDR x1, not SDR x8. I've asked to check the thread, to make sure the Micron fixups are getting applied for your device. Regards, Vinuhttps://e2e.ti.com/support/clock-timing-group/clock-and-timing/f/clock-timing-forum/1633415/lmk1c1102-lmk1c1102pwr-ibis-model-issue/6297805Tue, 07 Apr 2026 05:25:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:2c26e0cd-4e88-4778-9c35-5a85c3878072Vidhya JHI Mike, REfer to the snap below. It sets default to IO_50A_S. As shown in Circuit, A1 and B1 are referenced to 1.8V, A2 and B2 are referenced to 3.3V. But output is generated to be 1.8V in simulation. Thanks and Regards, Vidhyahttps://e2e.ti.com/support/power-management-group/power-management/f/power-management-forum/1633146/lmr51435-q1-lmr51435sqdrrrq1-simulation-model-pspice-tina-ti/6297803Tue, 07 Apr 2026 05:25:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:5494fbd7-7335-4744-8574-dc21fdc34696Sourish NandyHello Vikas, Glad to be of help. Closing the thread. Thanks and Regards, Sourish Nandy.https://e2e.ti.com/support/interface-group/interface/f/interface-forum/1633687/dp83867ir-regarding-communication-errors-when-using-the-dp83867ir-in-combination-with-a-switching-hub-whose-ifg-is-less-than-96nsTue, 07 Apr 2026 05:23:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:bd864bf1-fb1a-4f69-a399-bcf3b09ae2d3mitsuda KenjiPart Number: DP83867IR I am using a 1000base-T board equipped with a DP83867IR in combination with a switching hub from a certain manufacturer. In frames output from the hub, the IFG sometimes falls below the specified minimum value (96ns), resulting in a communication error. When I changed the DP83867IR register (VTM-CGF address 0x0053) from its default value of 0x5 to 0x3, a different error occurred. I would like to know the cause of this error and how to resolve it. Also, does the DP83867IR have an EEE (Energy Efficient Ethernet) function? If so, please tell me how to disable this function.Industrial AutomationDP83867IRhttps://e2e.ti.com/support/motor-drivers-group/motor-drivers/f/motor-drivers-forum/1633565/mcf8315evm-mcf8315evm---max-speed/6297799Tue, 07 Apr 2026 05:23:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:e699b26b-dd3c-43df-b8d9-ab9c92dc99c3Venkatadri Shantaram84961Hi I cannot download or access the attachment. Can you copy the JSON file here? When the speed loop saturation flag shows, it means the device cannot reach the set speed reference. This could be due to insufficient DC bus voltage or ILIMIT setting. When the current loop saturation flag is set, the same reasons apply. The motor has reached the maximum speed for the applied voltage and BEMF, and no further increase in current is possible. Please try running SmartTune to measure R, L, and KE again. I will verify the motor datasheet and get back to you Thanks and Best regards Venkatadri Shttps://e2e.ti.com/support/power-management-group/power-management/f/power-management-forum/1633264/tps56837h-tps56837h-is-not-working-as-expected/6297801Tue, 07 Apr 2026 05:23:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:2458b99d-fdc2-4c29-aeb1-48e740f6797dHaseen Reddy Siripi ReddyHi Dilip, Seems to be you have higher clamp Zener diode. At any point of time EN pin voltage should not exceed 5.5V. Also regarding the output cap missing we may not get exact average of SW voltage. So what ever you have seen is expected and it is good that the issue is due to soldering. Hence i will be closing this thread. Regards, Haseen.https://e2e.ti.com/support/power-management-group/power-management/f/power-management-forum/1633224/tps2663-clarification-on-uvlo-pin-behavior-when-tied-to-gnd/6297800Tue, 07 Apr 2026 05:23:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:6b916f54-a734-4148-a2f4-ec9cc8431a4bAmrit Jit1. Yes, on IN_SYS. 2. Yes. 3. What's your input voltage when UVLO is connected to GND? Can you share waveform? When UVLO is connected to IN_SYS, device will turn on when it exceeded 4.5V. 4. If reverse polarity FET is used then connected UVLO, OVP ladder to IN_SYS pin. Thanks Amrithttps://e2e.ti.com/support/motor-drivers-group/motor-drivers/f/motor-drivers-forum/1633686/mcf8329hs-q1-mcf8329hsovermodulationTue, 07 Apr 2026 05:22:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:ad7851cf-606f-457c-8415-32d2005740b4Tomasz BadzlaPart Number: MCF8329HS-Q1 Other Parts Discussed in Thread: MCF8329HS Hi TI. Recently I used MCT to spin the motor and the speed was something about 4200rpm. Now I would like to use MCF to get higher efficiency but the speed is lower. Currently it's around 3800rpm. I though that overmodulation will help achieve 4200. How to check if overmodulation is actually working?MCF8329HSMCF8329HS-Q1https://e2e.ti.com/support/motor-drivers-group/motor-drivers/f/motor-drivers-forum/1631111/mcf8329a-q1-migrate-from-evm-board-to-custom-pcb-with-stm32-mcu/6297796Tue, 07 Apr 2026 05:18:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:4ffc4ef8-fbda-4e65-8ee0-8f32179889a7DhineshHI Rongwei, Please monitor the board supply voltage using oscilloscope. There can be a short dip in device supply voltage while running the SmartTune due to power supply current limit. Thanks, Dhineshhttps://e2e.ti.com/support/audio-group/audio/f/audio-forum/1633279/tas5830-ppc3-access/6297797Tue, 07 Apr 2026 05:18:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:4fade4f8-ae9f-425c-b497-0d10dac55e44Wenbin Li1Hi Peter, Yes, only TAS5825m has the smart AMP algo support. TAS5830 didn't include this feature. Br, Wenbinhttps://e2e.ti.com/support/power-management-group/power-management/f/power-management-forum/1633440/lm74700d-q1-nominal-voltage-of-58v/6297795Tue, 07 Apr 2026 05:17:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:6c4cbd80-dfee-4711-a022-772233765457Shiven DhirHi Deepak, Please check available Pspice model on TI.com. If reverse polarity is needed, there is a concern. If you look closely, ANODE to CATHODE rating is -75V. And for an example, if you have a condition where output is powered up to say 48V, and you connect -53V on input, you will a drop of -101V and device will damage. Please check if reverse polarity can actually happen. If it does, we have a workaround to mitigate this risk, please go through this tech note. Cascaded ideal diodes: Solving 48V EV power challenges Regards, Shiven Dhir