https://e2e.ti.com/support/power-management-group/power-management/<p style="display:none;">blank</p>en-USTelligent Community 13https://e2e.ti.com/support/power-management-group/power-management/f/power-management-forum/1679532/tida-011012-tida-011012-50kw-sicFri, 04 Sep 2026 10:43:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:68fd2aa4-e55d-4975-a0ab-7b66eb75ba43Wayne LiuPart Number: TIDA-011012 Hello TI Team, We are interested to purchase TIDA-011012 50kW SiC-based modular solid-state transformer, please advise who is the right person we should talk to. Thanks Wayne LiuTIDA-011012https://e2e.ti.com/support/power-management-group/power-management/f/power-management-forum/1679051/sn74lvc2t45-q1-current-consumption-and-heating-of-sn74lvc2t45qdcurq1/6473487Fri, 04 Sep 2026 10:39:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:b5a0e52a-4852-4760-8598-9862a1bb3fa7Joshua SalinasHello Gopika, The reason for the excess current draw is one of your inputs (B2) is floating. Once you force DIR to ground, B1 and B2 become your inputs. Can you force B2 to ground and see if the issue is resolved? Regards, Joshhttps://e2e.ti.com/support/power-management-group/power-management/f/power-management-forum/1679527/ucg28836evm-150-request-for-design-files-ucg28836evm-150-evaluation-boardFri, 04 Sep 2026 10:31:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:4e4e59d3-303b-46fe-872f-a35282c305b6Mohd SahidPart Number: UCG28836EVM-150 Other Parts Discussed in Thread: UCG28836 Dear TI Support Team, I am currently evaluating the UCG28836EVM-150 evaluation board for our power electronics application. For our evaluation and to understand the reference design in detail, we would like to request the complete design files for the UCG28836EVM-150 evaluation board. Could you please provide the following files, if available: Complete schematic files PCB layout/source files Gerber files Complete BOM with manufacturer part numbers PCB fabrication/assembly files Transformer/magnetics specifications and design details Any available design calculation or reference design documentation The design files will help us better understand the implementation and evaluate the UCG28836 device for our application. Please share the available files or provide the appropriate link/access procedure to download them. Thank you for your support. Best Regards, Mohd SahidIndustrial AutomationUCG28836EVM-150UCG28836https://e2e.ti.com/support/power-management-group/power-management/f/power-management-forum/1679057/lm70880-q1-the-rds-on-value-of-fet-inside-of-lm70880-q1/6473465Fri, 04 Sep 2026 10:14:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:844af735-4b41-4fba-937d-531887fe355aChase JeongDear Pramanik, Thank you for your support. I cannot accept your friendship request. (Nothing happened although I click &quot;Accept friend request&quot;) So I cannot send you private message. Could you find another way to help me? Best regards, Chasehttps://e2e.ti.com/support/power-management-group/power-management/f/power-management-forum/1668200/lmr38015-q1-question-about-initial-operation-of-lmr38015-q1/6473451Fri, 04 Sep 2026 09:48:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:d13aa10f-c095-433e-83cd-1d4c6c468321Chase JeongDear Niranjan, Thank you for your support. I think the problem is caused by the current rating of inductor. My customer now do additional test. And my customer have some additional questions about the issue above. 1. When I simulate with WEBENCH, phase margin is unstable if the current consumption is low. I think phase margin would be unstable if current consumptions is large. Could you check the reason of this symptom? 2. Is the DCR value of inductor important when choosing the inductor? Best regards, Chasehttps://e2e.ti.com/support/power-management-group/power-management/f/power-management-forum/1679503/tps61040-inquiry-regarding-vin-stabilization-for-tps61040Fri, 04 Sep 2026 09:35:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:295751b1-5486-4f40-866d-ea2d207deab9KyoheiPart Number: TPS61040 Hi team, Our customer is currently evaluating the TPS61040. The converter is configured with the following component values: Vin = 2.3 V R1 = 560 kohm R2 = 100 kohm Cin = 4.7 &#181;F CFF = 10 pF Co = 100 &#181;F L1 = 10 &#181;H The customer assembled the following circuit on a universal prototyping board, keeping the layout as compact as possible, and obtained an output voltage of approximately 8 V. A voltage detector IC (threshold voltage: 1.9 V, open-drain output) is connected to Vin. The customer is concerned that the voltage detector may trigger an unintended reset while the boost converter is operating. When observing the Vin waveform, it appears that switching-noise-like disturbances are present on Vin. The output of the voltage detector IC also fluctuates as Vin fluctuates, so the customer would like to stabilize Vin and prevent these fluctuations. Currently, this noise phenomenon appears at approximately 1-second intervals. No load is connected to the output. Yellow waveform: Vin Green waveform: Vout Purple waveform: Voltage detector IC output (pull-up connected to Vin) Questions Is it unavoidable for the TPS61040 operation to affect Vin in this manner? Do you have any recommendations or best practices for stabilizing Vin and preventing switching noise from affecting the input voltage? Are there any specific layout, filtering, or component-selection considerations that could help reduce the Vin fluctuations? We would appreciate any guidance you can provide. Best regards, KyoheiTPS61040https://e2e.ti.com/support/power-management-group/power-management/f/power-management-forum/1679495/ucd9240-requesting-legacy-fusion-digital-power-designer-installer-for-ucd9240Fri, 04 Sep 2026 09:19:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:040608a4-df07-4ecb-9434-d5cb10bb4de1SK NgohPart Number: UCD9240 Hi, I would like the request a legacy Fusion Digital Power Designer installer for UCD9240. The latest version (7.12.1) does not support this obsolete part. Also, what is the supported Windows OS version, doest the legacy installer supports Win 10 / Win 11 ? Thanks.UCD9240https://e2e.ti.com/support/power-management-group/power-management/f/power-management-forum/1679482/tps62873-comp-pin-question/6473432Fri, 04 Sep 2026 09:19:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:fea667e7-32a4-4d4e-a703-ff6e80d79564Jingyihi Tommy, Thanks for using e2e. Please double check with customer if there are more output caps close to the load and not shown in the schematic. Assuming all the output caps are shown, I would recommend to change R359 to 300 ohm and C299 to 10nF. R352 is shown as NC in schematic. The MODE/SYNC pin must not be floating, so please double check. BR, Jingyihttps://e2e.ti.com/support/power-management-group/power-management/f/power-management-forum/1674609/bq25756-bq25756-6s-charger-bat_ovp-fault-above-24-5-v/6473429Fri, 04 Sep 2026 09:12:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:922b4a26-cdbe-441d-9973-e6c16c3d5b03vimal Babue2e.ti.com/.../bq25756schem.pdf please check my schematicshttps://e2e.ti.com/support/power-management-group/power-management/f/power-management-forum/1678470/tlc6c5912-q1-switching-characteristics-propagation-delay-from-rising-edge-of-rck-to-output-change/6473422Fri, 04 Sep 2026 09:03:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:fcbd04f1-fca6-4c41-be69-6c6a2b24c2ebDavid ArnoldHi Isaiah, thank you so much for your input. I was hoping to get some official timing specification, but I also like your approximation approach. Please have a look at my commented version of the Functional Block Diagram. /resized-image/__size/640x480/__key/communityserver-discussions-components-files/196/Commented_5F00_Functional_5F00_Block_5F00_Diagram.png I agree with the approximation value of 20ns, but I think that this does not state of how long the propagation delay of the D flip flop is approximated, I think, that it is an approximation of how much longer it takes for the signal to take the &quot;RCK-path&quot; compared to the &quot;/G-Path&quot;. I come to this conclusion, because the &quot;/G-Path&quot; has an Inverter in its way, which is not the case for the &quot;RCK-path&quot;. So I assume, that the D flip flop causes 20ns more propagation delay than the inverter. 1. Do you agree with my analysis? 2. Also I think I noticed a potential error in the Functional Block Diagram. I do not think, that there should be an inverter depicted between the last D flip flop and SER OUT. More details are in the comment of my commented version of the Functional Block Diagram at the bottom. Please also consider that the very similar serial shift register BD8379EFV-M from ROHM Semiconductor does not mention an inversion of the signal of SEROUT at all. This is an indication to me, that I really might have spotted an error. Thank you and kind regardshttps://e2e.ti.com/support/power-management-group/power-management/f/power-management-forum/1678275/lm5122-lm5122-boost-light-load-condition-power-factor-issue/6473421Fri, 04 Sep 2026 09:03:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:4e247e5b-06f0-4de1-91fb-afaf1a1db353Hassan JamalHi Zong, At 48 V input and 54 V output, the converter is operating with a relatively small boost duty cycle (~11%). Under light-load conditions in FPWM, the LM5122 maintains continuous switching and allows reverse inductor current. This can increase the RMS input current while the real input power remains low, which can explain the reduced measured PF. The datasheet specifically notes that reverse current is not limited in FPWM. When changing to diode-emulation/pulse-skipping operation, reverse current is prevented, which can explain the PF improvement at 48 V. However, pulse skipping can itself produce a discontinuous input-current waveform at other operating points such as 24 V. Since the issue occurs specifically around 48 V but disappears at 47 V and 50 V, I would first check whether there is a transition in the switching behavior rather than changing the compensation directly. Could you please provide scope captures at 47 V, 48 V and 50 V showing SW, LO/HO, COMP and the inductor/input current at the same load? Also, please provide the switching frequency, inductance, current-sense resistance and load current. This will help determine whether minimum on-time/current ripple or another control transition is responsible. Best regards Hassanhttps://e2e.ti.com/support/power-management-group/power-management/f/power-management-forum/1679482/tps62873-comp-pin-questionFri, 04 Sep 2026 09:02:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:5e2e835d-9c87-4a00-9b55-0bd757f5a53cTommy TzengPart Number: TPS62873 Hi Team, could you please kindly help us confirm whether the current compensation value setting for pin 1 is okay? thnaks for you help and learn from you. 12.8T XPO LRO TPS628673Z1 review 0730 (2).pdfTPS62873Datacom modulehttps://e2e.ti.com/support/power-management-group/power-management/f/power-management-forum/1679123/tps7a4501-sp-lib-file/6473416Fri, 04 Sep 2026 08:59:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:7fd57b4a-128f-46ba-8f20-9f04c4af9dc5Kenneth AquinoMore on this: The present model exhibits severe convergence/timestep reduction and anomalous time-domain behavior when connect to the charge pump, although it behaves normally from an ideal source.https://e2e.ti.com/support/power-management-group/power-management/f/power-management-forum/1679123/tps7a4501-sp-lib-file/6473408Fri, 04 Sep 2026 08:54:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:948cf87e-c349-4cc8-8ad3-1431347ac63aKenneth Aquino- I&#39;m using LTSPICE to simulate this. - It is the unencrypted .lib file. - I drive the input with a charge pump, switching at 500 kHz. - I see what looks like instability at 10 kHz. - Same circuit, but as an experiement I substitute an LT317A three-terminal voltage regulator for the TPS7A4501 and I don&#39;t see this problem. - I&#39;d love to share the schematic but can&#39;t. If you could send me an unencrypted transient .lib file I&#39;ll try that.https://e2e.ti.com/support/power-management-group/power-management/f/power-management-forum/1679075/lm7481-q1-startup-abnormal/6473399Fri, 04 Sep 2026 08:46:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:dac5ce63-fca3-44ab-a04e-e0e3abbf16d0Che Wen YehHi Shiven, Output cap about 250uF. Thanks.https://e2e.ti.com/support/power-management-group/power-management/f/power-management-forum/1679222/tps25762-q1-how-to-put-the-tps25762-chip-into-fwup-mode-without-rtvsp-mounting/6473394Fri, 04 Sep 2026 08:41:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:2eefe4f9-6eed-46f2-8daf-bb21dda26cbcSeong KimHi Vayne, By &quot;FWUP mode&quot;, do you mean TVSP8? What do you mean they &quot;tested that the MCU passed I2C2&quot;? BR, Seonghttps://e2e.ti.com/support/power-management-group/power-management/f/power-management-forum/1677478/tps1686-question-regarding-ul2367-and-iec-62368-1-cb-certification-schedule/6473391Fri, 04 Sep 2026 08:40:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:4ecd2bc4-da7e-4870-b664-c795d8f0ad85Amrit JitHi Raita, As I said earlier TPS1686 IEC 62368-1 certification timeline is not decided yet. We will plan once TPS1685/9 certification is completed. you will see an update on product page once done. Thanks Amrithttps://e2e.ti.com/support/power-management-group/power-management/f/power-management-forum/1679471/tpsm843620-in-out-cap-quesitonFri, 04 Sep 2026 08:36:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:40c81589-50ad-4fea-a324-1ad86d0aa8c4Tommy TzengPart Number: TPSM843620 Hi Team, customer plan to use the TPSM843620 based on the following specifiaction and schematic shown below, we used webench to simulate these specificaiton, but we found that the input and output Cap values differ significatly from those used on the EVM board, we concern about whether this approach could pose any risk? and, we would like to know if there any other issue with this circuit? thanks for your support and learn from you. WBDesign521_TPSM843620.pdf https://www.ti.com/lit/ug/sluucr2/sluucr2.pdf?ts=1788495953056&amp;ref_url=https%253A%252F%252Fwww.ti.com%252Ftool%252Fko-kr%252FTPSM843620EVMTPSM843620Datacom modulehttps://e2e.ti.com/support/power-management-group/power-management/f/power-management-forum/1679429/tpsm863252-recommended-junction-temperature/6473383Fri, 04 Sep 2026 08:31:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:660bebca-4717-4c40-b970-1fb2cf380ea0Vidhi SharmaHi, We will check this and get back to you. Regards, Vidhihttps://e2e.ti.com/support/power-management-group/power-management/f/power-management-forum/1679464/lmq644a2-q1-schematic-review-about-the-lmq644a2Fri, 04 Sep 2026 08:19:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:727afb13-7772-4948-a0af-ad1741fc415dSean ChouPart Number: LMQ644A2-Q1 Hi TI team, I&#39;m using the LMQ644A2-Q1 as a inverting buck-boost application, the basic spec as below: VIN=12V, VOUT=-4V, Iout=-6A, I have modified a schematic from the LMQ644A2-Q1 EVM to configure this buck converter as a dual phase inverting buck-boost converter. Could you help me to check is it ok, is the connection right or not, especially for the configuration pin. Thanks a lot. SCH.pdf BR SeanLMQ644A2-Q1