https://e2echina.ti.com/support/motor-drivers/zh-CNTelligent Community 13https://e2echina.ti.com/support/motor-drivers/f/motor-drivers-forum/1091920/drv8701-drv8701-/3930113Fri, 28 Aug 2026 08:55:00 GMT91561404-af28-475a-b96b-cb6cbaadd097:423d7799-bf86-42e6-9a32-7f069292ff0bEirwen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/motor-drivers/f/motor-drivers-forum/1091920/drv8701-drv8701-Fri, 28 Aug 2026 07:09:00 GMT91561404-af28-475a-b96b-cb6cbaadd097:fac55bbc-1cd3-4650-b175-74f490588c70kl002Part Number: DRV8701 我想用DRV8701做半导体空调的换流器，现在情况是我的电路带半导体空调是正常的，但是我测试时，发现我如果接在电子负载上，把电子负载启动(0.5A)后，然后再给系统上电，会出现告警，无法启动； 另外我发现如果我在输出处接一个22uf的电容，上电后会有一小段告警时间，大约几百毫秒的告警，然后输出正常； 我尝试了更改idrive电阻，发现更换后有可能直接mos管发烫，疑似出现了上下管直接导通； 我想问下如果存在容性负载的话，有哪些方式可以降低启动时间，避免出现过大的瞬态电流么? 下边是我的电路图：DRV8701工业自动化https://e2echina.ti.com/support/motor-drivers/f/motor-drivers-forum/1091915/drv8363-q1-drv8363-fmeda/3930098Fri, 28 Aug 2026 05:50:00 GMT91561404-af28-475a-b96b-cb6cbaadd097:bd0677da-501a-4ad0-9005-26754a9571ddFRANK1您申请下这个车载芯片PPAP资料，看看有没有FMEDA。 Automotive PPAP | TI.comhttps://e2echina.ti.com/support/motor-drivers/f/motor-drivers-forum/1091915/drv8363-q1-drv8363-fmeda/3930097Fri, 28 Aug 2026 05:43:00 GMT91561404-af28-475a-b96b-cb6cbaadd097:a7ca741f-0816-4f62-bbe4-0ecb5b665f49FRANK1感谢您对TI产品的关注！ 关于你的咨询，我们正在确认您的问题，感谢您的耐心等待。https://e2echina.ti.com/support/motor-drivers/f/motor-drivers-forum/1091915/drv8363-q1-drv8363-fmedaFri, 28 Aug 2026 05:41:00 GMT91561404-af28-475a-b96b-cb6cbaadd097:97bbea0c-c1b3-44b2-ae29-adea70bec7f9Jun LinPart Number: DRV8363-Q1 Other Parts Discussed in Thread: DRV8363 我们的一个产品使用DRV8363作为BLDC的预驱，现在要进行FMEDA分析，需要TI释放这颗料的FMEDA文件。DRV8363-Q1DRV8363https://e2echina.ti.com/support/motor-drivers/f/motor-drivers-forum/1090863/drv3946-q1-dev3946-driver-spi_err/3927186Mon, 24 Aug 2026 09:17:00 GMT91561404-af28-475a-b96b-cb6cbaadd097:b161195e-8148-48bb-ac5b-32d070c6bbdcqing zhaoHello, thank you for your support. After modifying the MCAL SPI transmission to be a one-time 24-bit transmission, the spi_err disappeared, but we encountered a new issue. During the initialization process, is there any additional requirement before clearing the fault register CMD1? When we sent the fault-clear command, the readback value was 0xffff. Additionally, is there an update to the datasheet? The CRC algorithm in the EVM demo does not match the description in the datasheet. The EVM demo uses a polynomial of 0x2f, while the datasheet specifies 0x97. Below is the screenshot of the data using 0x2f,looking forward your reply soon.https://e2echina.ti.com/support/motor-drivers/f/motor-drivers-forum/1090863/drv3946-q1-dev3946-driver-spi_err/3927179Mon, 24 Aug 2026 09:08:00 GMT91561404-af28-475a-b96b-cb6cbaadd097:e9333e66-f746-47f2-88c8-98f3dd28e471qing zhaoHello, thank you for your support. After modifying the MCAL SPI transmission to be a one-time 24-bit transmission, the spi_err disappeared, but we encountered a new issue. During the initialization process, is there any additional requirement before clearing the fault register CMD1? When we sent the fault-clear command, the readback value was 0xffff. Additionally, is there an update to the datasheet? The CRC algorithm in the EVM demo does not match the description in the datasheet. The EVM demo uses a polynomial of 0x2f, while the datasheet specifies 0x97. Below is the screenshot of the data using 0x2f,looking forward your reply soon. ...https://e2echina.ti.com/support/motor-drivers/f/motor-drivers-forum/1090863/drv3946-q1-dev3946-driver-spi_err/3927130Mon, 24 Aug 2026 02:45:00 GMT91561404-af28-475a-b96b-cb6cbaadd097:f4ebb4f0-a766-41cd-a8ac-f9b2cb75b54eVivian GaoAdd Delays After Power-Up Increase the delay between VDD stabilization and the first SPI transaction Try 10ms, 50ms, or 100ms delays to rule out power-up timing Reduce SPI Clock Frequency Temporarily reduce from 4 MHz to 1 MHz or lower during initialization If the error disappears, it confirms a timing margin issue Scope the Power Supply Monitor VDD and PVDD during initialization with an oscilloscope Look for voltage dips, ripple, or slow rise times Check Signal Integrity Use an oscilloscope (not just logic analyzer) to examine: Rise/fall times of all SPI signals Overshoot/undershoot/ringing Signal levels at the device pins (not just at the controller)https://e2echina.ti.com/support/motor-drivers/f/motor-drivers-forum/1090863/drv3946-q1-dev3946-driver-spi_err/3927125Mon, 24 Aug 2026 01:04:00 GMT91561404-af28-475a-b96b-cb6cbaadd097:85210c82-b481-4a4d-b40d-7a580a4b4120qing zhaoHello, is there a conclusion and response?https://e2echina.ti.com/support/motor-drivers/f/motor-drivers-forum/1090896/drv8353-drv8353/3927107Sun, 23 Aug 2026 23:16:00 GMT91561404-af28-475a-b96b-cb6cbaadd097:2322ec88-6563-4728-9fae-520aa8f44491FRANK1感谢您对TI产品的关注！ 关于你的咨询，我们正在确认您的问题，感谢您的耐心等待。https://e2echina.ti.com/support/motor-drivers/f/motor-drivers-forum/1090896/drv8353-drv8353Fri, 21 Aug 2026 10:12:00 GMT91561404-af28-475a-b96b-cb6cbaadd097:262eb402-c007-4d09-9f3c-350e2b8f874fQIANG XIAOPart Number: DRV8353 DRV8353S问题点.docxDRV8353机器人https://e2echina.ti.com/support/motor-drivers/f/motor-drivers-forum/1090130/tms320f28379d-v-ipm-fault/3926430Fri, 21 Aug 2026 03:04:00 GMT91561404-af28-475a-b96b-cb6cbaadd097:e6262e9c-8879-43e9-81d1-a94ed19eb9admin li原因已经找到了，由于 TMS320F28379D 底部的散热焊盘与数字地之间的虚焊所导致。但是虚焊为什么会导致PWM的输出偶发性异常呢？https://e2echina.ti.com/support/motor-drivers/f/motor-drivers-forum/1090130/tms320f28379d-v-ipm-fault/3926428Fri, 21 Aug 2026 03:00:00 GMT91561404-af28-475a-b96b-cb6cbaadd097:627ea96d-6a89-4293-97fc-c8764252d604min liDSP所驱动的IPM模块，由于直通触发了IPM Fault短路故障。https://e2echina.ti.com/support/motor-drivers/f/motor-drivers-forum/1090863/drv3946-q1-dev3946-driver-spi_err/3926424Fri, 21 Aug 2026 02:17:00 GMT91561404-af28-475a-b96b-cb6cbaadd097:7589e094-0403-48f3-a63e-55d066c416e3Vivian GaoThank you for your attention to TI products. We are verifying your issue, please wait for our reply.https://e2echina.ti.com/support/motor-drivers/f/motor-drivers-forum/1090863/drv3946-q1-dev3946-driver-spi_errFri, 21 Aug 2026 02:11:00 GMT91561404-af28-475a-b96b-cb6cbaadd097:10a77fd9-01c1-45e1-a09c-0725494a85acqing zhaoPart Number: DRV3946-Q1 We have encountered the following issues during the development of the 3946 chip driver and seek assistance.First, we discovered that the SPI timing description in the DRV3946 datasheet was incorrect. Subsequently, we operated the SPI according to CPOL = 0 and CPHA = 0. However, during the initialization process, we found that the SPI_ERR bit occasionally set to 1 when reading the STATUS0 register, causing subsequent configuration initialization failures. The captured data from the logic analyzer is as follows. According to the datasheet description, the possible causes of SPI_ERR could be an incorrect number of CLK edges during the NCS low period or an invalid command CRC. The logic analyzer data confirms that the CLK edge count is correct, and reading STATUS0 does not require a CRC. Therefore, how should the SPI_ERR cause be analyzed? The data waveform is shown in the figure belowSecondly, we currently only have a demo of the evm_fw. Can you provide additional materials? Is the datasheet updated;Looking forward to your prompt reply. Thank you.混合动力、电动和动力总成系统DRV3946-Q1https://e2echina.ti.com/support/motor-drivers/f/motor-drivers-forum/1090130/tms320f28379d-v-ipm-fault/3925541Thu, 20 Aug 2026 08:34:00 GMT91561404-af28-475a-b96b-cb6cbaadd097:36454b3b-cc03-4f61-b733-893467212cfcEirwen能问具体是什么IPM Fault？https://e2echina.ti.com/support/motor-drivers/f/motor-drivers-forum/1090355/drv8300-drv8332dkd/3925526Thu, 20 Aug 2026 05:24:00 GMT91561404-af28-475a-b96b-cb6cbaadd097:9d3713f6-69c5-4e10-bce0-c71791194126FRANK1你好， DRV8332DKD是个客户定制产品，从资料看，没有P2P的直接替代品信息。 你可以看看相似代替品。 DRV8300U 数据表、产品信息和支持 | 德州仪器 TI.com.cnhttps://e2echina.ti.com/support/motor-drivers/f/motor-drivers-forum/1090355/drv8300-drv8332dkd/3924475Wed, 19 Aug 2026 02:02:00 GMT91561404-af28-475a-b96b-cb6cbaadd097:ec0accfe-42cc-475e-b765-421e630dee48FRANK1感谢您对TI产品的关注！ 关于你的咨询，我们正在确认您的问题，感谢您的耐心等待。https://e2echina.ti.com/support/motor-drivers/f/motor-drivers-forum/1090355/drv8300-drv8332dkdWed, 19 Aug 2026 02:00:00 GMT91561404-af28-475a-b96b-cb6cbaadd097:cb8969e8-efb9-42c7-a44f-2ff9ae1b34dajian zhangPart Number: DRV8300 之前老产品使用DRV8332DKD，请帮忙重新选型兼容的可替换规格 谢谢！DRV8300UDRV8300https://e2echina.ti.com/support/motor-drivers/f/motor-drivers-forum/1090144/drv8323r-ccs21-28p65-drv8323rs-spi/3924351Wed, 19 Aug 2026 00:01:00 GMT91561404-af28-475a-b96b-cb6cbaadd097:877de154-210a-4890-b660-611835fa2cafDaniel您好 以下是官方给出相关示例请您参考这个帖子说明。 DRV8323R：我该如何找到DRV8323RS的范例？- 电机驱动论坛 - 电机驱动 - TI E2E支持论坛