https://e2e.ti.com/support/motor-drivers-group/motor-drivers/Products covered in this section are TI's DRV family of motor drivers. Learn more at www.ti.com/motorcontrol.en-USTelligent Community 13https://e2e.ti.com/support/motor-drivers-group/motor-drivers/f/motor-drivers-forum/1656132/drv8300-smoothing-of-gate-driver-output-waveform-going-to-mosfet/6402640Thu, 02 Jul 2026 07:56:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:b3d41bb2-dcac-43d2-af45-c79cd53c6163Chirag SharmaNot able to check by changing capacitor. I want to know about diode selection is it required to change or not?https://e2e.ti.com/support/motor-drivers-group/motor-drivers/f/motor-drivers-forum/1660538/drv8804-drv8804-sdataout-levelsThu, 02 Jul 2026 06:42:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:64379b91-d1cc-43d8-a2a8-d5d85de22c2aMaurice_VPart Number: DRV8804 Other Parts Discussed in Thread: DRV8806 , Hi TI teams , I have a question regarding the output level of the SDATAOUT of DRV8804 amd DRV8806 that is almost the same and we are using as an alternative. In our application the Pover Supply is 24 Vdc +- 5 % , according to the datasheet the level can vary from 3.3 to 5.6 Volt , and even 6.5 volt of peak value . Since the output is connected to an input 5 V tolerant of a uc powered at 3.3 V , i designed a resistor divider that can accepted the limit value . My question is : in wich condition we can have the extreme values , is it related to the main voltage , to the production process or whatever ? Thanks MauriceDRV8804Industrial AutomationDRV8806https://e2e.ti.com/support/motor-drivers-group/motor-drivers/f/motor-drivers-forum/1660511/drv8800-verify-waveform-across-out-out--current/6402472Thu, 02 Jul 2026 06:12:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:be1e7218-2a3a-4be3-aef5-96f54d2e9cd8Manoj ChateNote - Schematic shows mode0 is used, however above waveforms are taken with Mode 1 implementation.https://e2e.ti.com/support/motor-drivers-group/motor-drivers/f/motor-drivers-forum/1660511/drv8800-verify-waveform-across-out-out--current/6402466Thu, 02 Jul 2026 06:08:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:4a29286d-cc6a-4a10-b506-6ed3374121a5Manoj ChateOne update - Even though schematic shows mode0 but Mode 1 was implemented while taking above waveforms.https://e2e.ti.com/support/motor-drivers-group/motor-drivers/f/motor-drivers-forum/1660512/drv8320-drv8320s-gate-drive-fault-0x0500-only-at-high-speed-operation---2-out-of-4-boards-failing-with-no-change-after-maximizing-idriveThu, 02 Jul 2026 05:37:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:27d102ad-4bb2-4938-9efa-6cbb94beaa05David Kim2Part Number: DRV8320 Hello We are currently designing a high-power 3-phase inverter board (approx. 2KW) using the DRV8320SRTVR . We have manufactured a total of 4 prototype boards , and we are encountering a strange unit-to-unit variance and speed-dependent issue. Symptom: 2 out of 4 boards work perfectly across the entire speed range (including high speed). The other 2 boards work fine at low speeds, but as soon as they transition to high-speed operation , the driver immediately shuts down and throws a Gate Drive Fault (GDF, SPI Error code 0x0500) . There is no physical damage or component failure on the failing boards; the IC simply trips and enters a protection shutdown during high-speed switching. Status Registers Readout on Failing Boards: Fault Status Register 1 (0x00h): 0x0500 (FAULT = 1, GDF = 1) Fault Status Register 2 (0x01h): 0x0002 (GDF_LA = 1, indicating Low-Side Phase A gate fault) Actions Already Taken on Failing Boards: Gate Resistors: Changed to 0-ohm (completely bypassed external gate resistance) to minimize turn-on delay. IDRIVE Settings: Increased IDRIVEP and IDRIVEN to their maximum software configurations via SPI. TDRIVE Setting: Extended TDRIVE to the maximum limit of 4000ns. Even after removing gate resistors and maximizing the drive current, the symptoms on the 2 failing boards remain completely unchanged (still tripping at high speed). Since it only happens at high speed and on specific units, we highly suspect that unit-to-unit component variations (such as MOSFET $Q_g$ tolerances) combined with layout parasitics are causing severe $V_{GS}$ ringing or GND bounce during rapid switching, falsely triggering the GDF monitor. Could you please provide guidance on the following? Given that the issue only appears at high speeds and on 50% of the build, what are the most likely root causes (e.g., dv/dt or di/dt noise inducing false VGS fault detection)? Are there any hardware filtering workarounds (e.g., external $V_{GS}$ capacitors, series beads, or Schottky diodes on SHx ) to suppress high-speed switching noise from falsely tripping the GDF latch? What specific waveforms (such as $V_{GS}$ or $V_{SHx}$ at the moment of high-speed transition) should we capture to narrow down this issue? Any technical insights or layout checklists for 2KW-class systems experiencing unit-to-unit GDF variance would be highly appreciated. Thank you.Industrial AutomationDRV8320https://e2e.ti.com/support/motor-drivers-group/motor-drivers/f/motor-drivers-forum/1660511/drv8800-verify-waveform-across-out-out--currentThu, 02 Jul 2026 05:35:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:3f039687-8185-4cef-b802-debf4593758cManoj ChatePart Number: DRV8800 Hello team, I'm using this IC to drive 3-way bistable solenoid valve with 1 second kick duration. I request you to verify the waveform across coil and it they are ok as per expectation. Below are the snapshots of schematic and waveform, please check. Yellow and orange are voltage across coil and purple is current.Medical & healthcareDRV8800https://e2e.ti.com/support/motor-drivers-group/motor-drivers/f/motor-drivers-forum/1659740/drv8244-q1-how-to-achieve-a-flexible-diag-pin-setting-on-drv8244h-hw-variant/6402071Wed, 01 Jul 2026 21:55:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:5eb04846-06c9-4211-a366-1ce720ba782dShinya MoritaHi Thank you for your questions. Mostly customer pick following way to avoid resistance selection on DIAG pin. - Use PWM or PH/EN mode. Only independent mode need to change external resistance. -Move to SPI variant. SPI variant has more flexibility. regards Shinyahttps://e2e.ti.com/support/motor-drivers-group/motor-drivers/f/motor-drivers-forum/1659073/drv8231a-date-code-for-restart-fix-slvag26/6402003Wed, 01 Jul 2026 20:52:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:0ad0f04e-749d-454b-a75d-224bba530e95Yuzhou YaoThank you for asking. We checked on it and TI48M parts didn't have the deglitch fix. Best, Yuzhouhttps://e2e.ti.com/support/motor-drivers-group/motor-drivers/f/motor-drivers-forum/1660391/drv8353-motor-driver-fault-triggerred-and-act-abnormallyWed, 01 Jul 2026 17:12:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:0cfc7392-ba97-4c7a-bae7-f35f48dfbd3cNam NguyenPart Number: DRV8353 Other Parts Discussed in Thread: CSD19532Q5B , I am developing basic motor control system for my project. And the driver are as followed: Gate driver: DRV8353RS (SPI variant, integrated 3× low-side current-shunt amplifiers), 6× PWM mode, VDS_OCP = latched shutdown, VDS level ≈ 1.5–1.7 V. Power MOSFETs: CSD19532Q5B (100 V NexFET), 3-phase, low-side shunt sensing. Problems: At the beginning, the code execute completely fine, not perfect but only need a few more refining. After the motor ran for a while, the driver reported module over-current and nFAULT LED asserted. Via SPI, the DRV8353 status register read statReg00 = 0x608 = FAULT + VDS_OCP + VDS_HB , i.e. a VDS over-current on one of the high-side MOSFET . I used multimeter to check for any short or open drain resistor or MOSFET, but everything seem fine. A slight tingling hot sensation when touch one of the MOSFET at the point of motor overcurrent fault/driver nFault LED triggerred, compared to the other MOSFET. I tried the same firmware/configuration to run motor correctly on a different board of the same design, so the problem appears to be specific to this board's hardware. I suspected issues with the driver IC so I replace with a working one, but it end up the same result, even more obvious. Worse, when commanded to spin, the DC bus voltage sagged and the supply cut off (power collapse), requiring a power cycle. Question: Is that possible for MOSFET to get weaker and thus not support enough power to the corresponding motor phase, even though nothing is shorted or open drain? Is it possible it is either the problem with the driver side but MCU side?CSD19532Q5BDRV8353Test & Measurementhttps://e2e.ti.com/support/motor-drivers-group/motor-drivers/f/motor-drivers-forum/1655471/ulc1001-drv290xevm-ulc1001-evm-persistent-drv_err-drv_err2-faults-with-pzt-8-transducer-rsp-82-38-7-khz/6401703Wed, 01 Jul 2026 16:44:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:2c3e3af6-02ff-4ad3-8c38-d6156a47caa2Hailong ChenYes, you can measure the impedance at different frequency using oscilloscope as well. You can google it to check how it is measured though it is not as convenient as impedance analyzer.https://e2e.ti.com/support/motor-drivers-group/motor-drivers/f/motor-drivers-forum/1660370/drv8434s-pwm-dc-input-signal-in-drv8434sWed, 01 Jul 2026 15:53:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:51c8e387-00b3-4bf6-a746-afaf0a911e66Frank CaiPart Number: DRV8434S Hi Team, Want to double check with you on some detailed technical questions: If we input the PWM as a DC signal(No high and low level, only high level), what is the status of the output and the motor? Does it cause some noise on motor? We did some test on the EVM and we can hear some noise from the motor. Do we have BEMF detection in DRV8434S? I don't see it in DS and want to double check with you, if yes, what is the accuracy for it. What is the control frequency for the current loop in DRV8434S? BRs, Frank CaiRoboticsDRV8434Shttps://e2e.ti.com/support/motor-drivers-group/motor-drivers/f/motor-drivers-forum/1659073/drv8231a-date-code-for-restart-fix-slvag26/6401585Wed, 01 Jul 2026 15:38:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:0d4e6ba9-d1e9-4719-8faa-103490a2b10eChris MyersThank you. Can you also confirm that the TI48M parts did not have the deglitch fix?https://e2e.ti.com/support/motor-drivers-group/motor-drivers/f/motor-drivers-forum/1660084/mcf8329evm-mcf8329a-mpet-parameter-extraction-issue/6401260Wed, 01 Jul 2026 11:56:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:27fdf6cd-1711-49b5-aeeb-25d63aaa76eaVenkatadri Shantaram84961Hi , What is the max speed of the motor which you have entered? If the max speed is lower, then the KE measurement may not work due to low speed, and if the max speed is very high, the device may not be able to run the motor in open loop to the handoff threshold, at which point the device measures the developed BEMF. Either one of the above-mentioned reasons can be affecting it. The next question is regarding the base current configuration as per the shunt resistor — please verify this on priority. I also recommend the MCF8329JHS and leveraging the SmartTune feature available in the latest MotorStudio to auto-tune the motor. Thanks and best regards, Venkatadri Shttps://e2e.ti.com/support/motor-drivers-group/motor-drivers/f/motor-drivers-forum/1655471/ulc1001-drv290xevm-ulc1001-evm-persistent-drv_err-drv_err2-faults-with-pzt-8-transducer-rsp-82-38-7-khz/6401232Wed, 01 Jul 2026 11:25:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:ad61391e-048d-449d-a59b-a237e7065241Harsh BavishiHi Hailong, Unfortunately we dont have any specific impedance analyzer but we do have an oscilloscope. Will this help? The resonance impedance according to the supplier is about < 30 ohms.https://e2e.ti.com/support/motor-drivers-group/motor-drivers/f/motor-drivers-forum/1660200/launchxl-f28379d-f28379d-launchpad-drv8305-isrticker-remains-0-in-controlsuite-monomtrservoWed, 01 Jul 2026 10:12:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:96af4439-3760-4b14-8485-16f4663ec7f0ZI FangPart Number: LAUNCHXL-F28379D Other Parts Discussed in Thread: CONTROLSUITE Hello, I am trying to run a Teknic motor (incremental QEP encoder) using a LAUNCHXL-F28379D and BOOSTXL-DRV8305 . Since the latest MotorControl SDK lacks a direct F2837x QEP example , I imported the legacy controlSUITE project: MonoMtrServo_377s_v1_00_00_00. i HAVE CONNECTED THE ENCODER WITH THE QEP_A of the launchpad. Environment: CCS 10.1 and compiler 20.2.1 LTS The Problem: The code builds and loads cleanly into RAM. CPU1 shows as RUNNING . However, IsrTicker stays frozen at 0 . Changing EnableFlag to 1 in the Expressions window has no effect , meaning the code never reaches MotorControlISR . How to run it.ControlSUITELAUNCHXL-F28379DDRV8305https://e2e.ti.com/support/motor-drivers-group/motor-drivers/f/motor-drivers-forum/1660084/mcf8329evm-mcf8329a-mpet-parameter-extraction-issueWed, 01 Jul 2026 07:01:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:a59eddf1-e6ed-4b66-bf5c-1c955354ecd5Sai KishorePart Number: MCF8329EVM Other Parts Discussed in Thread: MCF8329A , MOTORSTUDIO Hello, I am working with the MCF8329A and am facing issues during MPET parameter extraction. Initially, when running MPET, the motor entered a fault condition and sometimes reported an abnormal Back EMF. To avoid this, I increased the Abnornal BEMF lock threshold (% of expected BEMF) to 70%. However, even with this change, the motor does not spin at all. I tested with two different drone motors, but the behavior is the same for both. After entering Kp, Ki and manually measured electrical parameters like Rs, Ls, Ke. Motor is directly going to CC. We dont know mechanical parameters properly. So I initialized all the registers to zero and manually run using hardware pot. Motor entering to Ke measure mode and keep on estimating back emf even after 5mins. The same happens with 2 different motors. The same happened with mechanical parameters estimation too. Please review the attached Reg File Let me know if there are any incorrect settings or if you have any recommendations for resolving this issue? Thankyou for your time!MCF8329AMOTORSTUDIOMCF8329EVMhttps://e2e.ti.com/support/motor-drivers-group/motor-drivers/f/motor-drivers-forum/1660073/drv110-strange-behaviour-oscillationWed, 01 Jul 2026 06:44:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:70dc5230-399a-45cb-ac77-f356c1595021Patrick RufPart Number: DRV110 Hi, I use the DRV110 to drive a 24V power relay. Schematic is as follows. Now I can see that the voltage at VIN is ramping up and down. This is also seen on the current in the power relay: Channel C1 (yellow) shows the ripple voltage at VIN (AC part). C2 (red) shows the current ripple in the realy. C3 (blue) shows the switching at the drain of Q1. Due to the voltage ripple at VIN I can see a low frequency oscillation in the current of around 333Hz. There is also a high frequency oscillation caused by a very short switch-on time. The voltage at the external Zener diode D1 is stable at around 19.6V. Any suggestion how this can be avoided or what might be the cause of the ramping voltage at VIN? Thanks and best regards, PatrickTest & MeasurementDRV110https://e2e.ti.com/support/motor-drivers-group/motor-drivers/f/motor-drivers-forum/1659077/drv8378-drv8378-full-spec-samples-and-dev-kit-availability/6400799Wed, 01 Jul 2026 04:39:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:f056d51b-58e2-4e2b-98cf-3774f562c72bRajesh ChauhanHi Kostyantyn, Taking it to mail chain for faster discussion Regards, Rajeshhttps://e2e.ti.com/support/motor-drivers-group/motor-drivers/f/motor-drivers-forum/1659973/mcf8329a-mcf8329a-vs-mct8329a/6400779Wed, 01 Jul 2026 04:14:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:7d50193b-085e-4118-b6ad-4c3e66391823Venkatadri Shantaram84961Hi The top-level difference is that the MCF8329A is an FOC-based motor drive, while the MCT8329A is trapezoidal-based commutation. May I know your application requirement? Thanks and best regards, Venkatadri Shttps://e2e.ti.com/support/motor-drivers-group/motor-drivers/f/motor-drivers-forum/1659740/drv8244-q1-how-to-achieve-a-flexible-diag-pin-setting-on-drv8244h-hw-variant/6400743Wed, 01 Jul 2026 03:11:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:833db8ce-cd4c-4aa9-a7e1-c85a50ebd05aJakeenAdd one more question. When I disable off-state diag, how about the out pin state for below marked pins setting? Are out pins in Hi-Z state?