https://e2echina.ti.com/support/power-management/zh-CNTelligent Community 13https://e2echina.ti.com/support/power-management/f/power-management-forum/1096576/tps6521905-tps6521905-slot-0ms/3948019Tue, 06 Oct 2026 04:20:00 GMT91561404-af28-475a-b96b-cb6cbaadd097:ffb24700-ae28-4e8f-ad3a-2512040e6164Eirwen需要根据图片上的时间以及6.3.1 上电时序章节的内容设计时序。https://e2echina.ti.com/support/power-management/f/power-management-forum/1096525/tps53667-pcb-ti/3948005Tue, 06 Oct 2026 04:12:00 GMT91561404-af28-475a-b96b-cb6cbaadd097:e33e4970-ebb4-47b7-ba6d-fdbb6e402b3bEirwen请参考评估板用户手册的回路图BOM和LAYOUT进行检查： https://www.ti.com.cn/lit/ug/sluubh9/sluubh9.pdf 以及PMP22510的参考文件： PMP22510 参考设计 | 德州仪器 TI.com.cnhttps://e2echina.ti.com/support/power-management/f/power-management-forum/1095585/bq76952-dsg/3946764Fri, 02 Oct 2026 11:57:00 GMT91561404-af28-475a-b96b-cb6cbaadd097:85f98397-b730-4148-82f2-d6ed4792c618Vivian Gao不会https://e2echina.ti.com/support/power-management/f/power-management-forum/1095581/lm2675-5-0eval/3946763Fri, 02 Oct 2026 08:50:00 GMT91561404-af28-475a-b96b-cb6cbaadd097:63a7faf2-33f5-45b1-a2bf-91d1389a23fbEirwen使用的是评估板吗？https://e2echina.ti.com/support/power-management/f/power-management-forum/1096579/tps23881-sifos-psa3000-test-item-info/3946756Thu, 01 Oct 2026 10:46:00 GMT91561404-af28-475a-b96b-cb6cbaadd097:a4cdb42d-e1eb-4997-9ea9-3b57fdfd0a00Daniel您好 已经收到了您的案例，调查需要些时间，感谢您的耐心等待https://e2echina.ti.com/support/power-management/f/power-management-forum/1094090/ucc28780-ucc28780-debugging-issues/3946753Thu, 01 Oct 2026 07:07:00 GMT91561404-af28-475a-b96b-cb6cbaadd097:4c18bb3a-aa3b-4d14-b420-7aa8ffd8601eROHAN SHAH你好 很抱歉回复晚了，因为发布时我没有看到端到端视图。 这种现象是否引发了任何问题？ 能否检查一下 UCC27712 器件的输出，以及 FET 的 PWML 和 Vgs，以便了解这种现象是由什么原因造成的？ 问候 罗汉ECTEhttps://e2echina.ti.com/support/power-management/f/power-management-forum/1096579/tps23881-sifos-psa3000-test-item-infoThu, 01 Oct 2026 05:16:00 GMT91561404-af28-475a-b96b-cb6cbaadd097:6df0898c-25a0-4d72-9271-88ea83a0427dwilly shiPart Number: TPS23881 Hi TI Team, We are currently using the Sifos PSA3000 to evaluate the TPS23881EVM for IEEE 802.3bt Type 3 4-Pair operation. During the test, we observed that the following two items are reported as Info : Backoff_Voltage_Ss Backoff_Time_SS Are these two info results related to the TPS23881 IC design? If so, should we ignore them without any compliance or interoperability concerns? TPS23881EVM_PSA_Report.xlsxTPS23881数据中心和企业计算https://e2echina.ti.com/support/power-management/f/power-management-forum/1096575/tps544b28-loop-response-adjustment-issue-for-tps544b28/3946751Thu, 01 Oct 2026 04:03:00 GMT91561404-af28-475a-b96b-cb6cbaadd097:cf38a965-5df6-4b12-a669-e153ef8efe51Eirwen已经收到了您的案例，调查需要些时间，感谢您的耐心等待。https://e2echina.ti.com/support/power-management/f/power-management-forum/1096576/tps6521905-tps6521905-slot-0ms/3946750Thu, 01 Oct 2026 04:03:00 GMT91561404-af28-475a-b96b-cb6cbaadd097:c79d2cc6-df0b-465b-8ee5-c8780c1fb6a6Eirwen已经收到了您的案例，调查需要些时间，感谢您的耐心等待。https://e2echina.ti.com/support/power-management/f/power-management-forum/1092507/tps23754evm-420-poe-fails-to-provide-stable-power-delivery-to-poe-at-compliant-devices/3946746Wed, 30 Sep 2026 17:07:00 GMT91561404-af28-475a-b96b-cb6cbaadd097:6c73b161-11ca-477e-a392-62fdb20b6970Saah Sicarr你好， 我想先看一下检测引脚的连接情况。您是否已经探测过该引脚的电流或电压，以了解握手过程的情况？ 能否提供原理图文件或链接？我无法看到 VDD 和 VSS 线上的具体数值。 你的电容值是多少？你使用的是哪种TVS二极管？ 此致， 萨阿ECTEhttps://e2echina.ti.com/support/power-management/f/power-management-forum/1096576/tps6521905-tps6521905-slot-0msWed, 30 Sep 2026 07:23:00 GMT91561404-af28-475a-b96b-cb6cbaadd097:141a8ff5-eb5b-4fff-b67f-5d9cadf7b152LIANG XU6Part Number: TPS6521905 TPS6521905所有电源轨是否可以同时上电下电，即所有slot值为0msTPS6521905https://e2echina.ti.com/support/power-management/f/power-management-forum/1096575/tps544b28-loop-response-adjustment-issue-for-tps544b28Wed, 30 Sep 2026 06:57:00 GMT91561404-af28-475a-b96b-cb6cbaadd097:d3da1c56-9930-4ef6-a31c-aaedaf57c9bfChance ZhanPart Number: TPS544B28 We are encountering a loop stability issue with the TPS544B28 during on-site debugging. At a switching frequency of 800kHz, the device experiences a power dropout approximately one minute after power-on. GUI displays the following alarms. Additionally, the measured SW waveform shows severe jitter. Interestingly, the dropout issue does not recur when the frequency is increased to 1000kHz, though the severe SW jitter persists. The current GUI settings are shown below. Could you please provide guidance on how to optimize the loop response to resolve these issues? And the schematci is shown at the picture.tps544b28https://e2echina.ti.com/support/power-management/f/power-management-forum/1095585/bq76952-dsg/3946742Wed, 30 Sep 2026 06:18:00 GMT91561404-af28-475a-b96b-cb6cbaadd097:1ea272f7-494a-4820-9c64-b05f060a24b1Yu Chao嗯嗯，我试了下，配置成低有效，上电时是拉低的，但主机发送开启指令不生效，我看DFETOFF引脚原理图中是直接接地的，如果使能的话会一直拉低，主机发送开启指令还会生效吗？https://e2echina.ti.com/support/power-management/f/power-management-forum/1096566/bq78706-bq78706/3946727Wed, 30 Sep 2026 03:53:00 GMT91561404-af28-475a-b96b-cb6cbaadd097:a999f4b0-f774-4a31-aa18-d26dabd72b11Alice您好， 请使用公司邮箱注册的TI账号，在 产品网页 申请。https://e2echina.ti.com/support/power-management/f/power-management-forum/1096567/pmp23547-demo/3946726Wed, 30 Sep 2026 03:50:00 GMT91561404-af28-475a-b96b-cb6cbaadd097:35e8253c-41a2-4226-823f-9535b4041ee9Alice您好， 很遗憾， 参考设计PMP23547 并没有硬件供客户测试。 链接帖子提供了此参考设计的设计资源，请参考。 PMP23547: design data, theory of operation - Simulation, hardware & system design tools forum - Simulation, hardware & system design tools - TI E2E support forums PMP23547: BOM of GaN-Based 8kW 3-Phase Totem-Pole PFC and 3-Phase LLC Reference Design - Simulation, hardware & system design tools forum - Simulation, hardware & system design tools - TI E2E support forumshttps://e2echina.ti.com/support/power-management/f/power-management-forum/1096568/tps6521905-en/3946725Wed, 30 Sep 2026 03:32:00 GMT91561404-af28-475a-b96b-cb6cbaadd097:54c4786d-fb9f-4ebb-a0f1-062f4203ed84Vivian Gao感谢您关注TI产品。我们正在核实您的问题，请耐心等待我们的回复。https://e2echina.ti.com/support/power-management/f/power-management-forum/1096569/tps6521905-tps6521905-buck-ldo/3946724Wed, 30 Sep 2026 03:31:00 GMT91561404-af28-475a-b96b-cb6cbaadd097:c1eabb9d-3cd2-4084-b058-c429c1ebb6fcVivian Gao感谢您关注TI产品。我们正在核实您的问题，请耐心等待我们的回复。https://e2echina.ti.com/support/power-management/f/power-management-forum/1096569/tps6521905-tps6521905-buck-ldoWed, 30 Sep 2026 03:18:00 GMT91561404-af28-475a-b96b-cb6cbaadd097:7d497a4b-f0ed-40a8-bf8d-2c86eceb5ebdLIANG XU6Part Number: TPS6521905 LDO的输入电源必须连到VSYS吗，我打算buck部分连到5v，lDO1输入5v，输出3.3v，LDO234输入连到2.3V，输出1.8v 1.0v降低损耗可以吗？TPS6521905https://e2echina.ti.com/support/power-management/f/power-management-forum/1096568/tps6521905-enWed, 30 Sep 2026 03:16:00 GMT91561404-af28-475a-b96b-cb6cbaadd097:4e74d150-edba-4d9a-81a9-f83dee9fdb7cLIANG XU6Part Number: TPS6521905 Teeprom_load=2.3ms，如果使用EN引脚控制PMIC启动，至少需要在VIN输入电压5v就绪后2.3ms才能实现有效控制吗TPS6521905https://e2echina.ti.com/support/power-management/f/power-management-forum/1096542/tps6521905-tps6521905/3946723Wed, 30 Sep 2026 03:12:00 GMT91561404-af28-475a-b96b-cb6cbaadd097:e1ade210-4fe6-49e7-8533-5fcac008f963Daniel您好 感谢您的信任 关于新的问题请重新发帖谢谢。