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/1642216/tps63805-inductor-change/6337915Fri, 08 May 2026 10:26:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:404fe7a1-0ebc-45d3-8446-379e2bebc1cdLei ZhongHi Pragash, Thanks for your information. I&#39;ll assign this E2E to the right expert to support you. Regards Leihttps://e2e.ti.com/support/power-management-group/power-management/f/power-management-forum/1643389/tps6594-q1-wd_error-trigger-not-executing-pfsm-sequence/6337908Fri, 08 May 2026 10:18:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:bc8fd78d-8467-4226-9d2a-55b07f13efbaTino HuuskonenHi Yuki, I tried to evaluate the watchdog with your NVM configuration and was not able to replicate the behavior you are seeing. From your log, it can be seen that INT_FSM_ERR register has value 0x10 before the WD evaluation starts. There is a communication error interrupt that has already fired. Can you try again and include INT_TOP register in the log to see if other interrupts have fired already before WD evaluation starts/ during it? -Tinohttps://e2e.ti.com/support/power-management-group/power-management/f/power-management-forum/1640088/lm2597hv-lm2597hv-sd-pin/6337892Fri, 08 May 2026 10:00:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:1f1a8658-b456-4b5d-8c32-1f2c6791a01bBertramHello, we will return the components through the official channel. Let&#39;s see what the feedback on the errors will be. best regardshttps://e2e.ti.com/support/power-management-group/power-management/f/power-management-forum/1643755/lmr70503-buck-boost-conveter-out-negative-voltage-range/6337889Fri, 08 May 2026 09:58:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:04f16755-fd66-4293-88e8-69ea17eab2bfMoritzHi Tommy, Thanks for reaching out. You could use a CUK converter like LM2611. Or have a look at this app note, how to build a negative boost from a buck converter. https://www.ti.com/lit/an/slyt516/slyt516.pdf Best regards Moritzhttps://e2e.ti.com/support/power-management-group/power-management/f/power-management-forum/1643865/tps61378-q1-adjustable-uvloFri, 08 May 2026 09:44:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:b5dd97f1-644d-42ef-a329-1d14e81f97dcFredrick Ze TiongPart Number: TPS61378-Q1 HI. Is there a way for me to turn on/off the device without the EN pin? I am already using the EN pin with a voltage divider to shutdown the device when the input voltage is &lt;3V. This is because the input voltage is from a battery and I do not want the converter to drain the battery when it is at a low capacity. It would be great if I could just set the UVLO to 3V. That way I can use the EN pin to turn on/off the device. Thanks.TPS61378-Q1https://e2e.ti.com/support/power-management-group/power-management/f/power-management-forum/1643863/tl1431-sp-inquiry-regarding-radiation-information-for-sp-and-sep-devicesFri, 08 May 2026 09:40:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:bafa93ef-28a9-487a-bb45-7c89f44971cebeomjoon kimPart Number: TL1431-SP Other Parts Discussed in Thread: SE555-SP , TMUX182-SEP , TPS7H5020-SEP , TLV1704-SEP , TPS7H4010-SEP , INA950-SEP , TPS7A4501-SP , ISOS141-SEP , LM158QML-SP , DS26F32MQML-SP Dear TI Support Team, We are reviewing several TI space-grade devices for a radiation-sensitive application and would like to request available SEE radiation data. Could you please provide any available radiation reports or characterization data for the following devices? TL1431-SP: SEU, SET SE555-SP: SEU, SET TMUX182-SEP: SEDR TPS7H5020-SEP: SEDR TLV1704-SEP: SEDR TPS7H4010-SEP: SEDR INA950-SEP: SEDR TPS7A4501-SP: SEDR ISOS141-SEP: SET LM158QML-SP: SEL, SEDR, SET DS26F32MQML-SP: SEL, SEDR, SET If full SEE reports are not available, please provide the available LET-related data, including: Maximum tested LET LET threshold, if available SEL / SEB / SEGR / SEDR / SET / SEU results Cross-section data Heavy-ion and proton test data, if available Test conditions, including bias, temperature, fluence, and ion species In particular, we would like to confirm whether any destructive SEE events such as SEL, SEB, SEGR, or SEDR were observed within the tested LET range. Best regards, BEOMJOONTPS7A4501-SPTLV1704-SEPTL1431-SPTPS7H4010-SEPISOS141-SEPTMUX182-SEPDS26F32MQML-SPTPS7H5020-SEPLM158QML-SPSE555-SPINA950-SEPhttps://e2e.ti.com/support/power-management-group/power-management/f/power-management-forum/1643347/bq4050-bqstudio-shows-the-voltage-of-cell-4-wrong-scale-in-a-3s1p-lithium-battery/6337846Fri, 08 May 2026 09:20:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:2509ee51-781f-4315-b89f-5a8c254f8c6fviet trane2e.ti.com/.../BQ4050_5F00_Original.gg.gg.csv Hi, Please see the .gg file. Also, I tried lowering the discharge cutoff voltage from 3.2V to 2.9V, but the output still turns OFF at 3.2V every time. However, when I increase the discharge voltage to 3.5V, the output turns OFF at around 3.5V as expected. I am not sure which parameter is enforcing the 3.2V cutoff. I have already adjusted several parameters, but the discharge still always stops at approximately 3.2V. Thanks! Viethttps://e2e.ti.com/support/power-management-group/power-management/f/power-management-forum/1637350/ucc39002evm-ucc39002evm-current-share-problem/6337828Fri, 08 May 2026 09:08:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:e9da4218-59a1-4ac1-a286-ec7e79356e34Anil KumarHi Sahin, As I have not seen any response from last 2 week, I&#39;m assuming that your issue got resolved. For now, I&#39;m closing this thread, you can reopen or start a thread anytime if you have any further query on this. Regards Anilhttps://e2e.ti.com/support/power-management-group/power-management/f/power-management-forum/1641952/lm5066h-review-circuit/6337822Fri, 08 May 2026 09:05:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:242539a9-b25e-4e41-b70b-5924f3cf9a98savi sajso slew rate planned is 6 V/ms.to get 24 V output system, 4 ms time is required right? so fault timer duration should be greater than this 4 ms right? current ly fault timer duration set is 25 ms? is that okay?https://e2e.ti.com/support/power-management-group/power-management/f/power-management-forum/1643750/lm27761-negative-voltage-converter-range-issue/6337804Fri, 08 May 2026 08:57:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:78c0fe49-2191-4ea8-9192-57aef58535ffJosef MarsmannHi Tommy, Thanks for using E2E. Unfortunately, I have no information about a device you are looking for and also we don&#39;t have a reference design for your request. Sorry. Best regards, Sepphttps://e2e.ti.com/support/power-management-group/power-management/f/power-management-forum/1643829/lm51770-smooth-change-from-unidirectional-to-bidirectional-modeFri, 08 May 2026 08:46:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:d57cb72e-e26d-4018-96d2-b9178882bdc7Mario WillenbergPart Number: LM51770 I use the LM51770 in a bidirectional converter. It works in two operational modes: 1) There is a battery voltage at the input and the device provides stabilized voltage at the output. 2) There is an output voltage higher than the set point at DTRK and the device charges the battery at the input. This works fine in steady state and the limits for battery voltage, battery current and output current are ensured by external regulaters which are connected to COMP. The problem arises when I change from mode 1) to 2). I just change the MODE pin to high. Imidiately there is a very big current going into the battery because the external battery current regulator is not yet at its working point (this takes some milliseconds). I need to avoid this high current somehow. Do you have an idea? Actually i would need to have an immidiate limit for the charge current into tha battery and ramp it up. So far I had no succes doing this. Best regards Mario WillenbergIndustrial AutomationLM51770https://e2e.ti.com/support/power-management-group/power-management/f/power-management-forum/1640510/tps922152-current-accuracy-of-dimming/6337772Fri, 08 May 2026 08:34:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:5ee43b06-29ad-4de3-ad47-422c29ba81e9Daisuke HigaHi Lucia-san Thank you for your reply. I will consider with flexible dimming. Best regards, DHhttps://e2e.ti.com/support/power-management-group/power-management/f/power-management-forum/1643824/lm74900-q1-questions-about-lm74900-lm7480-startup-dgate-waveform-and-va-vc-behaviorFri, 08 May 2026 08:33:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:ba9c6892-30ee-4279-a148-07a9033fb24eR.FukunagaPart Number: LM74900-Q1 Other Parts Discussed in Thread: LM74900 , LM7480 Hi all, We are currently conducting a preliminary evaluation using our own evaluation boards for the LM74900/LM7480. We have two questions and would appreciate your support. We will attach the waveform screenshots and the measured data. First, regarding the LM74900 startup behavior: We observed a jagged waveform on the DGATE pin during startup. Could you please let us know whether this is normal behavior of the device? At this stage, we would first like to determine whether: this waveform is expected based on the device specification, or there may be an issue with our prototype evaluation board design or test setup. If this waveform is expected behavior, we would also appreciate it if you could explain the reason or operating mechanism behind it. Second, regarding the VA-VC specification (the VDS voltage of the ideal diode MOSFET): According to our measurements on the evaluation board, when the input voltage or load current increases, the measured value deviates from the specification value. Could you please confirm whether this is also expected behavior? Best regards,Industrial AutomationLM7480LM74900-Q1LM74900https://e2e.ti.com/support/power-management-group/power-management/f/power-management-forum/1643818/lm5066h-lm5066h2-questionsFri, 08 May 2026 08:28:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:d727741d-e2b4-47aa-8d66-25805cab07fdSean Liao (Yu-Sheng)Part Number: LM5066H Hi sir, My customer Portwell wants to evaluate LM5066H2 . Could you pls provide below info? sample and MP schedule LM5066H2 EVM user guide, datasheet Thanks a lot!LM5066HEnterprise machinehttps://e2e.ti.com/support/power-management-group/power-management/f/power-management-forum/1643812/tps2663-part4-clarification-on-uvlo-pin-behavior-when-tied-to-gndFri, 08 May 2026 08:18:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:81ddd33b-9a88-48d3-b40e-0117a22cf696ConorPart Number: TPS2663 Hello Amrit and Support Team, This is a follow-up to the thread below: https://e2e.ti.com/support/power-management-group/power-management/f/power-management-forum/1637157/tps2663-part3-clarification-on-uvlo-pin-behavior-when-tied-to-gnd?tisearch=e2e-sitesearch&amp;keymatch=TPS2663 Please see the additional information below. 1. Applied VIN voltage I apologize for sharing an unclear waveform image. In the waveform image I previously sent, CN1 (yellow trace) is the VIN voltage. The scale for CN1 is 5 V/div, so the applied voltage is 24 V. 2. Scope of the issue At present, we have powered on 7 prototype boards, and the same issue occurs on all of them. In addition, we also evaluated 2 separate devices on a breadboard using the same connection conditions, and the same behavior was observed on both devices as well. Based on these results, the issue does not appear to be limited to one specific board or one specific device. Please let us know if there are any other points we should check. Best regards, ConorIndustrial AutomationTPS2663https://e2e.ti.com/support/power-management-group/power-management/f/power-management-forum/1643272/lp8872-q1-dual-phase-ic-with-the-same-functions-as-lp8872/6337753Fri, 08 May 2026 08:14:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:a8780265-6708-461c-a94f-5fe0597e4bf5haitao.zhangOK Thankshttps://e2e.ti.com/support/power-management-group/power-management/f/power-management-forum/1643810/tps482h85-q1-inquiry-on-high-side-switch-operation-at-2-5-s-switching-periodFri, 08 May 2026 08:13:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:e0477088-2e78-4f11-a6bb-6f74372a5814Jinho GwonPart Number: TPS482H85-Q1 We would like to confirm whether your high-side switch can be reliably operated with continuous on/off switching at a 2.5 &#181;s period (≈400 kHz). Please let us know if there are any limitations or concerns for this operation.TPS482H85-Q1https://e2e.ti.com/support/power-management-group/power-management/f/power-management-forum/1643808/lm74910h-q1-over-temperature-protectionFri, 08 May 2026 08:11:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:8b5124fa-04b0-4c7e-b054-a0f7420e9438Theo KeinarthPart Number: LM74910H-Q1 Other Parts Discussed in Thread: CSD18543Q3A Hi TI Team, I have a question regarding this IC in combination with the CSD18543Q3A MOSFETs used as switches. My maximum load current is 5 A. The overcurrent threshold is set to 6 A, and the short-circuit protection threshold is set to approximately 11 A. For the dV/dt capacitor, I plan to use 100 nF to keep the inrush current low. The output capacitance to be charged is 500 &#181;F. I used the TI design tool to determine these values, and the design appears to work. However, I am somewhat concerned about possible MOSFET overheating and the fact that I would not be able to monitor the MOSFET temperature directly. Would you recommend adding an additional overtemperature protection mechanism, or is it reasonable to assume that the MOSFETs will not reach critical temperatures under normal operating conditions? Thank you in advance. Best regards, TheoIndustrial AutomationLM74910H-Q1CSD18543Q3Ahttps://e2e.ti.com/support/power-management-group/power-management/f/power-management-forum/1639207/lm65635-need-dc-dc-ic-selection-assistance/6337749Fri, 08 May 2026 08:08:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:baa100de-da98-4842-a6a4-5a9871899a1aNickwhat about LM5032. will it work?https://e2e.ti.com/support/power-management-group/power-management/f/power-management-forum/1643805/tps546e25-design-missing-tina-simulation-modelsFri, 08 May 2026 08:06:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:84dd6e2b-4c91-4e5d-b57a-814d354def0cChris TaylorPart Number: TPS546E25-DESIGN Hi, I am using TINA simulation modeling tool and have found it&#39;s component library lacking many parts.Viz:- LM704A0QRRXRQ1 TLV73333PQDRVRQ1 TPS543620RPYR TPS54KB20RZRR TPS62085RLTT TPS62873N0QWRXSRQ1 TPS62913RPUR TPS74501PQWDRVRQ1 Is there another location/vault containing these models? P.S. the TPS546E25-DESIGN part number above is not relevant and just a workaround to make the submission possible. Best Regards ChrisTPS546E25-DESIGN