https://e2e.ti.com/support/site-support-group/site-support/The central location for the latest E2E news, training, feature updates, member feedback and E2E specific site support.en-USTelligent Community 13https://e2e.ti.com/support/site-support-group/site-support/f/site-support-forum/1671016/lmr38010-q1-dc-dc-ic-failed/6448114Wed, 12 Aug 2026 08:56:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:c1ab1274-2394-4b32-9d59-eb9f72eb96e9Gobi RajagopalIn datasheet, Vin max voltage is 85V EN max voltage is Vin + 0.3 V Query: EN max voltage means 85 + 0.3V or 24V + 0.3V (if we apply Vin is 24V from Vbat line) which one is correct ?https://e2e.ti.com/support/site-support-group/site-support/f/site-support-forum/1671016/lmr38010-q1-dc-dc-ic-failed/6448042Wed, 12 Aug 2026 07:31:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:22972eac-9792-4fbb-8fd5-6b8e2046e602Gobi RajagopalYou mean, if Vbat = 24V and IGN = 24.4V , then EN pin s getting fail or not ? (>0.3V) If yes , now, we added a series resistor. (ie) IGN line --> 47K series resistor --> EN pin ..is this ok ?https://e2e.ti.com/support/site-support-group/site-support/f/site-support-forum/1671016/lmr38010-q1-dc-dc-ic-failed/6448012Wed, 12 Aug 2026 07:03:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:0f04ea14-3885-4760-8f28-8c057c8c883bTony KoulongHi Gobi, Did you measure the transient voltage of IGN with the common mode choke? My observation is that a positive transient on the IGN line spikes higher than the voltage at the VIN pin, the internal diode becomes forward biased. Mother question would be "Without the common mode choke. Is the IC still failing while EN is tie to IGNhttps://e2e.ti.com/support/site-support-group/site-support/f/site-support-forum/1671016/lmr38010-q1-dc-dc-ic-failed/6447906Wed, 12 Aug 2026 05:51:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:54dc0dad-e531-4a90-b36e-edee8bcde8ffGobi RajagopalAlready we referred the datasheet. we knew this information Vbat = 24V IGN = 24Vhttps://e2e.ti.com/support/site-support-group/site-support/f/site-support-forum/1671016/lmr38010-q1-dc-dc-ic-failed/6447632Wed, 12 Aug 2026 00:22:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:b8fc9691-e241-433d-85d0-a10f13b200b4Tony KoulongHi Gobi, I am checking the absolute maximum rating for EN. Can you measure the transient voltage of the IGN line and make sure it does not exceed Vin + 0.3V? I suspect that EN is seeing a higher voltage than it is supposed to, which may be due to a high surge current that quickly melts the tiny internal diode.https://e2e.ti.com/support/site-support-group/site-support/f/site-support-forum/1671016/lmr38010-q1-dc-dc-ic-failed/6446331Tue, 11 Aug 2026 04:56:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:c5841a38-5166-43fd-9cdd-57fe31fb67c4Gobi RajagopalYes ..it is working fine only problem is if i connect EN pin to IGN line, then only Buck IC getting fail. is common mode choke creating any impact? Input voltage is 24V for Vbat and IGN line is buck will create any differential voltage between Vbat line and IGN line?https://e2e.ti.com/support/site-support-group/site-support/f/site-support-forum/1671016/lmr38010-q1-dc-dc-ic-failed/6445616Mon, 10 Aug 2026 16:12:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:8a511120-a268-4d6a-ae6a-7f098f0a5540Tony KoulongHi Gobi, Please allow sometime to investigate this issue. Have you tried to tie EN to VIN with the common mode choke connected?https://e2e.ti.com/support/site-support-group/site-support/f/site-support-forum/1671016/lmr38010-q1-dc-dc-ic-failed/6445267Mon, 10 Aug 2026 11:48:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:78b61c7f-f3db-417b-9e00-53445dd5a0b1Gobi RajagopalI shared the Sch and but no response from your endhttps://e2e.ti.com/support/site-support-group/site-support/f/site-support-forum/1671016/lmr38010-q1-dc-dc-ic-failed/6443713Fri, 07 Aug 2026 09:19:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:72ace8c6-73b4-41c3-864e-77545082e1d4Gobi Rajagopalhttps://e2e.ti.com/support/site-support-group/site-support/f/site-support-forum/1670891/tps51397a-package-details/6443631Fri, 07 Aug 2026 08:12:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:0b0a1ef6-4772-4ec1-88ba-f0737f722e1cNikhil S BhardwajHi Ritika We can confirm that it is RJE0020B to be used and here is the package drawing for your reference. We are working internally to have it published on the website soon. Thanks for pointing out. e2e.ti.com/.../RJE0020B_5F00_ePOD.pdf Regards Nikhilhttps://e2e.ti.com/support/site-support-group/site-support/f/site-support-forum/1670891/tps51397a-package-details/6443352Fri, 07 Aug 2026 03:11:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:97faba92-57f6-4d77-9521-b4aeb8d0abfeRitika SalujaIn this link https://www.ti.com/product/TPS51397A?keyMatch=TPS51397A&tisearch=universal_search&usecase=GPN-ALT It is only mentioned package name RJE-20 but no package drawing exist in this datasheet. We need detailed package drawing information for this part number TPS51397ARJER . So kindly provide the package drawing with detailed information of outline and footprint dimensions. Please consider this urgent.https://e2e.ti.com/support/site-support-group/site-support/f/site-support-forum/1671016/lmr38010-q1-dc-dc-ic-failed/6443096Thu, 06 Aug 2026 21:47:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:6d69bb1f-df47-4d3d-aec5-6864d3f9609fTony KoulongHi Gobi, Can you share your schematic and the other changes you did on the design?https://e2e.ti.com/support/site-support-group/site-support/f/site-support-forum/1670891/tps51397a-package-details/6442203Thu, 06 Aug 2026 10:30:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:3837f4f3-7a8c-4f14-8119-9a868ad5ec0eNikhil S BhardwajHello Ritika We will respond to this shortly. Regards Nikhilhttps://e2e.ti.com/support/site-support-group/site-support/f/site-support-forum/1671016/lmr38010-q1-dc-dc-ic-failedThu, 06 Aug 2026 09:04:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:4d8cc555-423c-4fa2-8779-b0d0faa6901cGobi RajagopalPart Number: LMR38010-Q1 LMR38010FSQDDARQ1 Failure Observation We observed failure (short circuit) of two LMR38010FSQDDARQ1 devices. Initially, the EN pin was directly connected to the VIN pin, and the circuit operated without any issues. Later, a Common Mode Choke (CMC) was added in the input line to improve EMI/EMC performance, and the EN pin was connected to the Ignition (IGN) input instead of the IN pin. Following this change, the LMR38010FSQDDARQ1 devices started failing and became short-circuited. Subsequently, 47 k series resistor was added in the EN pin path, after which the circuit has been operating reliably without any failures. Could you help identify the possible root cause of this failure? According to the datasheet, the EN pin can withstand voltages greater than 80 V, whereas our system input voltage is only 24 V, our total load current is 60mA and DC-DC output is 13V (24V to 13V), 400KHZ SW freqLMR38010-Q1Body Electronics & Lightinghttps://e2e.ti.com/support/site-support-group/site-support/f/site-support-forum/1670891/tps51397a-package-detailsThu, 06 Aug 2026 02:47:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:beb9cd70-ae32-4a9b-8a6f-ab3027718477Ritika SalujaPart Number: TPS51397A Hi, No package information available in datasheet:TPS51397A 4.5-V to 24-V, 10-A Synchronous Buck Converter with ULQ™ Operation datasheet (Rev. A) Also, please confirm either RJE0020B or RJE0020A is right package to use for this part? Regards, Ritika SalujaTPS51397Ahttps://e2e.ti.com/support/site-support-group/site-support/f/site-support-forum/1670067/am625-am625-mpu-selection-reference-with-display-support-on-native-android-kernelTue, 04 Aug 2026 05:17:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:6d3de603-1c11-41ee-b4a7-617eaa52e541madhu hPart Number: AM625 hello customer support, Looking for AM625x processor or equ. that is capable of handing hi speed communication using CAN, has display interfaces and can run on Android OS. Please suggest me the right processor on performance, at the same time would like to get an eval kit on par with this. Request to connect with me.AM625Medical & healthcarehttps://e2e.ti.com/support/site-support-group/site-support/f/site-support-forum/1663214/rm48l540-rm48x-safety-certificate-expired/6437332Mon, 03 Aug 2026 09:21:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:8f1d3349-c8a6-4d4b-8592-18cb36b6de36jagadish gundavarapuHi Ioana, TI is working on the renewal of the certificates with TUV SUD and it should be updated in the system before EO 3Q’26. So, you will get recertification for RM48 by End of 3Q'26. -- Thanks & regards, Jagadish.https://e2e.ti.com/support/site-support-group/site-support/f/site-support-forum/1663214/rm48l540-rm48x-safety-certificate-expired/6435544Fri, 31 Jul 2026 05:46:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:a7171cf8-ebca-4246-b504-165352c01614jagadish gundavarapuHi Ioana, [quote userid="701342" url="~/support/site-support-group/site-support/f/site-support-forum/1663214/rm48l540-rm48x-safety-certificate-expired/6434357"]If your internal team decide not to recertify the RM48x, we would expect at least a derogation / exemption letter for this microcontroller so we can proceed with our certification process without impediment[/quote] Usually this should not be the case, i mean very higher chances for this device to go for recertify because this device is widely using. I will keep you post updates. -- Thanks & regards, Jagadish.https://e2e.ti.com/support/site-support-group/site-support/f/site-support-forum/1663214/rm48l540-rm48x-safety-certificate-expired/6434357Thu, 30 Jul 2026 11:05:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:49377040-773f-423d-b7c7-5d0e55923f27Ioana MIRICELHi Jagadish, Thank you for the update. No problem, I can wait for your team’s feedback. However, I wanted to highlight the urgency on our end: we currently have a fully certified system that relies directly on your microcontroller’s certification. Our system's recertification is currently blocked waiting for the status of the RM48x certificate. Please note that our recent system modifications were purely software-based. We have no intention of changing the microcontroller hardware. If your internal team decide not to recertify the RM48x, we would expect at least a derogation / exemption letter for this microcontroller so we can proceed with our certification process without impediment. Looking forward to hearing back from you in a couple of days. Best regards, Ioanahttps://e2e.ti.com/support/site-support-group/site-support/f/site-support-forum/1663214/rm48l540-rm48x-safety-certificate-expired/6432807Wed, 29 Jul 2026 10:36:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:e2ee766d-26b8-4ef7-8965-0a064bb09bf4jagadish gundavarapuHi Ioana, Apologies for the delayed response. Still the internal team discussing on what are variants of Hercules controllers should need to be recertified. Once this list has been finalized, i will communicate whether RM48x will undergo for recertification. Give me couple of days' time and appreciated your patience on this. -- Thanks & regards, Jagadish.