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/1691709/bq27441-g1-some-questions-about-bq27441-g1Thu, 22 Oct 2026 04:44:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:3e6b12f3-db21-40d5-91d3-fd886bc8756dVayne LiPart Number: BQ27441-G1 Hi Teams, The customer previously used BQ27441DRZR-G1B on an ink screen product, and now they want to reuse it on another product, but the battery capacity of this product may increase. They are still choosing: 1. This new battery must be selected in parallel, right? After increasing the battery capacity, they only need to recharge and discharge to learn, right? 3. Are there any other precautions for battery selection?Portable ElectronicsBQ27441-G1https://e2e.ti.com/support/power-management-group/power-management/f/power-management-forum/1686203/tps62903-dc-load-regulation-and-transient-load-response-specifications/6518023Thu, 22 Oct 2026 04:41:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:8f2803ef-4d75-4715-886e-cd8cdcc3544eminoru.takeuchiHi Vidhi, Thank you for your reply. I have a few questions. Q1. Load Regulation The datasheet does not provide the characteristics for our specific operating conditions. Please provide characteristic graphs or the method for calculating load regulation for the operating conditions listed below. Please ensure the response accounts for variations in current relative to the typical (Typ) values. TPS62903: VIN=12V, VOUT=3.9V, IOUT=Typ 500mA (value varies based on load state), FPWM, external FB, Fsw=2.5MHz, L=1uH, input C=20uF (10uF x 2), output C=22uF + 10uF TPS62901: VIN=3.8V, VOUT=1.1V, IOUT=Typ 150mA (value varies based on load state), FPWM, external FB, Fsw=2.5MHz, L=1uH, input C=20uF (10uF x 2), output C=22uF + 10uF Q2.Transient load response The specifications and component configurations are as stated above. Please provide the expected output voltage variation during load transients for the following conditions: TPS62903: 200mA to 2A (or 2A to 200mA) TPS62901: 50mA to 600mA (or 600mA to 50mA) Best regards, Takeuchihttps://e2e.ti.com/support/power-management-group/power-management/f/power-management-forum/1691437/tps2595-abs-max-rating-of-input-transient-voltage/6518012Thu, 22 Oct 2026 04:22:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:e33240e9-55cd-453a-b565-6887b30b4ea1Sailendra KumarHi Zheng there is no transient-duration allowance on VIN. Unlike the output (which has a specified minimum output voltage pulse for &lt;1 &#181;s), the VIN absolute maximum of 20 V applies continuously — including during transients. May I know why this spec is needed Best Regards, Sailendrahttps://e2e.ti.com/support/power-management-group/power-management/f/power-management-forum/1691700/tps25985-schematic-and-excel-tool-checkThu, 22 Oct 2026 03:54:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:eed79cdc-2d29-4aad-a2fd-e091fead3af4Tommy TzengPart Number: TPS25985 Hi Team, also, we have completed the schematic design, which is primarily based on the TPS25985 excel tool setting, the design will be use on server storage power board with 7-power rails, we have reviewed the schematic and have not found any obvious so far, could you please help review the schematic again and let us know if any modify need or if you have any recommend? thanks for you great support and learn from you. 9633pwr_schematic_review_mike20261021.pdf TPS25985 Design Calculation Tool.xlsxTPS25985Data center &amp; enterprise computinghttps://e2e.ti.com/support/power-management-group/power-management/f/power-management-forum/1691345/lm5143-q1-hiccup-mode-enable-disable-during-operation/6517999Thu, 22 Oct 2026 03:51:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:34b5d079-a937-4ab9-b431-66eed6d4ff7bWang HanHi Tim, Thanks for the clarification! So the block diagram is correct, as long as the inductor current hit the current limit threshold, the ss is pulled to 125mv above Vcomp? Not pulled 150mV above FB. That makes more sense. Am I correct? Thanks for your recommendation for LM5137. My application is 12V-to-12V bypass charging. So the converter normally operates in bypass or low-dropout mode, which maintains a cycle-by-cycle current limit to limit the charging current. So in this application, I would like to disable the hiccup. However, during a severe short circuit, I would like to enable the hiccup to reduce the power dissipation of the MOSFETs. From the above block diagram, if the cycle-by-cycle current limit is triggered, SS is then pulled lower immediately, which means the converter will stop switching until the SS cap is charged above the FB. Can you help check if my understanding is correct? Thanks, Hanhttps://e2e.ti.com/support/power-management-group/power-management/f/power-management-forum/1691512/tps4800-q1-1v-voltage-seen-when-gate-driver-of-tps48000-is-off/6517996Thu, 22 Oct 2026 03:50:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:b36c2db6-7e8f-44c2-a387-2130ba4eeca3Nick LuHi Sarah, As I checked, there are DC bias higher than 1Volt on the net connected to U109 SRC pin and nearly 1Volt DC voltage on VBAT_IN net (SRC of U105) I wonder how the DC bias comes and whether this will cause damage to TPS4800 by loads at output.https://e2e.ti.com/support/power-management-group/power-management/f/power-management-forum/1691323/lp5891-lp5891-sclk-waveform-distortion-at-10-mhz-and-intermittent-led-flicker/6517975Thu, 22 Oct 2026 03:25:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:6cc91c38-8d10-4583-a295-4760423f1b56Jane YeHi, I will check and reply to you soon. Best regards, Janehttps://e2e.ti.com/support/power-management-group/power-management/f/power-management-forum/1691632/tps65994ad-ds-required-for-tps66994carepr/6517963Thu, 22 Oct 2026 03:04:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:105b09f9-5972-42a9-9d8f-b5bcdea3c25cElijah OrozcoHi Carlos, A team member will reach out to you soon. Best, Elijahhttps://e2e.ti.com/support/power-management-group/power-management/f/power-management-forum/1691580/tps25751-a-question-about-a-gpio-output-usage/6517957Thu, 22 Oct 2026 02:56:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:7a7bbe44-ebc4-49b0-94d5-25061f9f5665Aya KhedrHi, Thank you for reaching out! The TPS25751 does not have a specific GPIO event for 20V sink contract. However, the sink path behavior is configurable in Autonegotiate Sink Register 37h. The power path can be configured to only enable at a 20V contract. Please see the following application note for more information. Best Regards, Aya Khedrhttps://e2e.ti.com/support/power-management-group/power-management/f/power-management-forum/1691250/tps922051-dim-input-protection-if-device-in-unpowered/6517953Thu, 22 Oct 2026 02:51:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:cb7f4935-699f-4d4a-8afe-db8feba71533Lucia GaoHi Bob, Thanks for your feedback. Actually, there is no required sequence between VIN and DIM at power up/power down. But pls do not let DIM pin floating after VIN powered up. For other questions, pls allow me some time to check. BRs Luciahttps://e2e.ti.com/support/power-management-group/power-management/f/power-management-forum/1691367/ucd91320-ucd91320-drive-strength-on-enable-pins/6517951Thu, 22 Oct 2026 02:49:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:d38978e2-c28d-49bd-81df-2813e76c92b3Janz BaiHello Magnus, On theory, you are right. BR, Janz Baihttps://e2e.ti.com/support/power-management-group/power-management/f/power-management-forum/1691637/tps92200-led-ground-short-to-batt-failure-options/6517949Thu, 22 Oct 2026 02:46:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:aa152cf5-41ac-4e9a-b244-3874b60fff7eFelix WangHi Thomas, Is the test shorting the GND to battery? If yes, when do the test is the VIN powered? And what power rail is the VIN connected to? best regards, Felixhttps://e2e.ti.com/support/power-management-group/power-management/f/power-management-forum/1691429/tps25751a-tps25751a-with-bq25798-and-bc1-2/6517945Thu, 22 Oct 2026 02:43:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:98bb3520-2443-4fa4-9505-90114405cb64Aya KhedrHi Tomasz, Thank you for reaching out! Your understanding is correct, the TPS25751A EVM does not have the D+/D- connected to the PD controller for BC1.2. Thank you for highlighting this. Best Regards, Aya Khedrhttps://e2e.ti.com/support/power-management-group/power-management/f/power-management-forum/1684163/tps1689-tps16890-pmbus-with-sufficient-vdd-before-en/6517941Thu, 22 Oct 2026 02:38:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:95d3024a-84f8-4921-952b-f90b6456430bAmrit JitHi Erika, I need to verify and check the m,b,r for full scale ADC value fo VIN_OV_FLT. Will come back by EoD. When EN toggles, the resistors values which are stored in RAM is expected to reset. EN toggle or power cycle both will do this. If you want to permanently store the value, use &quot;STORE USER ALL&quot; which will store in NVM. Thanks Amrithttps://e2e.ti.com/support/power-management-group/power-management/f/power-management-forum/1684163/tps1689-tps16890-pmbus-with-sufficient-vdd-before-en/6517935Thu, 22 Oct 2026 02:28:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:22370012-c419-4e67-a5a6-573fe02b9769Erika LongHi Amrit, Thank you for your reply. I see there is no answer to if the data sheet incorrect about the VIN_OV_FLT ADC scale factor? Can you confirm ASAP? Is there a list of registers that get reset and others that do not during a toggle of the enable line? Thank you, Erikahttps://e2e.ti.com/support/power-management-group/power-management/f/power-management-forum/1682995/lm5192-request-for-complete-package-drawing-of-lm5192rgyr/6517933Thu, 22 Oct 2026 02:25:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:ff5afcb0-0656-4404-a15b-534076f0734aPramanik PatelHi, I have emailed you. Please reply. Thankshttps://e2e.ti.com/support/power-management-group/power-management/f/power-management-forum/1684163/tps1689-tps16890-pmbus-with-sufficient-vdd-before-en/6517928Thu, 22 Oct 2026 02:14:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:5ce3cc9c-d11d-4b8e-9b4f-b0d981c83642Amrit JitHello Erika, Telemetry works with VDD&gt;10V but to change any resistor value, your EN needs to be higher than the shutdown threshold. This is meant to reduce the Iq when EN is low by turning off the digital section. Please ask customer to keep the EN high when programming the device. Thanks Amrithttps://e2e.ti.com/support/power-management-group/power-management/f/power-management-forum/1691674/tps2553-q1-cooThu, 22 Oct 2026 02:13:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:db388d1a-6dbc-4365-a8a8-e326928a3282Jeff YANGPart Number: TPS2553-Q1 Hi, May I know TPS2553QDBVRTM is oderable? My customer need find COO part, I found this part should be COO, but I don&#39;t know what is the different with TPS2553QDBVRQ1. Do you know what is the difference between TPS2553QDBVRTM and TPS2553QDBVRQ1? thanks!TPS2553-Q1https://e2e.ti.com/support/power-management-group/power-management/f/power-management-forum/1689381/lp8873-q1-backlight-response-time-from-register-value-changes-with-i2c/6517919Thu, 22 Oct 2026 02:00:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:91930fde-f834-4beb-a193-f7690708a468Hironobu TomitaHi Wu san, How is the status of this inquiry? We don&#39;t need you to answer all three questions at once. Could you please answer just questions 2 and 3? Number2, I&#39;d like to know what modes are available, such as Fast mode and High-Speed mode. Regards, Tomitahttps://e2e.ti.com/support/power-management-group/power-management/f/power-management-forum/1691134/tps61165-led-current-per-channel/6517912Thu, 22 Oct 2026 01:55:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:44930a1d-8978-42c2-87aa-fb3a77524ab4Wenjie ZhuHi Mones, You can take the efficiency curve (Vin=5V) for reference roughly. But for precise eff estimation, we recommend testing on TPS61165EVM based on your mission profile. Because the efficiency is also dependent on inductor selection (mainly due to different DCR), you can replace with your selected inductor on EVM. BR, Wenjie