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/1645374/drv8904-q1-drv8904-q1-ls-ocp-in-full-bridge-configurationWed, 13 May 2026 09:35:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:f8119e27-10c5-43f2-84b5-7d11c655d815Manu ChangPart Number: DRV8904-Q1 Hi expert, During evaluation of DRV8904-Q1, customers are testing it as a full bridge with Channel 1 as high side and Channel 2 as low side. They connected the OUT1 to positive pole of the digital load and OUT2 to negative pole of the digital load. Then they turn on the HS of OUT1 and LS of OUT2 with no load. Then they turn on the digital load in CC mode with around 3A to trigger the OCP, they noticed that the OUT2 LS OCP is always first triggered, hence they want to ask: Why the low side OCP is triggered firstly in such case? Does it have realation shipe with the digital load? In normal full bridge OCP, it should be randomly HS or LS OCP is triggerred first, right? BR, ManuDRV8904-Q1Body Electronics & Lightinghttps://e2e.ti.com/support/motor-drivers-group/motor-drivers/f/motor-drivers-forum/1641162/drv110-drv110-incorrect-frequency/6343263Wed, 13 May 2026 08:43:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:205fb1bc-fa51-419b-8ec1-44227f107627Enrique de Nicolás LumbrerasHello Mojtaba, I have finally managed to solve the issue. In addition to increasing Rsense from 4.7 Ω to 10 Ω, I added an RC filter (1 nF, 1 kΩ) on the SENSE pin of the relay driver. I believe the relay driver was being affected by switching noise. Thank you for your help. Best regards, Enriquehttps://e2e.ti.com/support/motor-drivers-group/motor-drivers/f/motor-drivers-forum/1645337/drv3256-q1-low-side-gate-driver-output-have-false-triggeringWed, 13 May 2026 08:09:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:d45e5c9a-bd21-4b3b-84da-ec9cb80715bbuser5883945Part Number: DRV3256-Q1 Dears, When power on and off, Low-side gate driver output waveform. there have no communication with MCU. power supply is 15V.HybridDRV3256-Q1electric & powertrain systemshttps://e2e.ti.com/support/motor-drivers-group/motor-drivers/f/motor-drivers-forum/1644965/drv8214-ipropi-pin-behaviour-and-calculation-values-keep-changing/6343127Wed, 13 May 2026 06:37:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:2bc32b08-d04f-4765-934d-fc4500a46d9fAvyaktha TantryI've tested the IPROPI pin in the DRV8214EVM we've and I'm getting a similar issue, for 28.6mA of peak current flowing through the DC motor I'm getting a peak voltage value of 590mV when gain is set at 1125uA/A. Refer the images below.https://e2e.ti.com/support/motor-drivers-group/motor-drivers/f/motor-drivers-forum/1644924/drv11873evm-drv11873evm-virtual-com-tuning/6343064Wed, 13 May 2026 06:07:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:bcf453b7-14de-4fa2-b15e-07547aa6e992Venkatadri Shantaram84961Hi, The COM pin is used for BEMF zero‑cross detection. This device employs a 150° commutation method, so sensing the BEMF at the exact moment is critical. A higher‑value resistor reduces the current flow through the COM pin, which can make the BEMF zero‑cross point less distinct. Using a lower‑value resistor improves BEMF detection. When the BEMF is sensed at the right instant, the motor operates more efficiently; this can be verified by measuring the power consumed at a given speed. In addition, monitor the phase voltages to ensure symmetric BEMF waveforms. The BEMF should exhibit perfect symmetry across phases Thanks and best regards, Venkatadri Shttps://e2e.ti.com/support/motor-drivers-group/motor-drivers/f/motor-drivers-forum/1645255/drv8332-ht-regarding-the-starting-torque-of-the-motorWed, 13 May 2026 05:39:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:359c8cb3-0aec-451a-bafe-c0cb1c2eaa7bmanoj chipirisettiPart Number: DRV8332-HT Hello team, iam uisng the DRV8332HDDV for the control of one three phase motor and the motor was operated on the 24v SUPPLY so the 24V is given as the input to the driver and based on the PWM the right phases are energized but and there is no problem in startig the motor when duty cycle is 10 percent and 90 percent at 10Khz. As soon as i increase the duty cycle from 20 and 80 there is a starting problem in the motor side motor is rotating after the push is there any thing need to be done from the driver side.and with 10 and 90 percent motor is rotating fine without any start push iam using pwm switching frequency 10khz. please help me in resolviign thisAdvanced Driver Assistance Systems (ADAS)DRV8332-HThttps://e2e.ti.com/support/motor-drivers-group/motor-drivers/f/motor-drivers-forum/1644924/drv11873evm-drv11873evm-virtual-com-tuning/6343001Wed, 13 May 2026 05:13:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:23b6492f-ba3f-4c7a-880c-5f5a5d4ce28bVenkatadri Shantaram84961Hi Thank you for reaching out with the details. I will review them and get back to you shortly. Thanks and best regards, Venkatadri Shttps://e2e.ti.com/support/motor-drivers-group/motor-drivers/f/motor-drivers-forum/1645231/drv8870-drv8870-current-regulation-accuracyWed, 13 May 2026 03:49:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:d090763a-1e75-4d76-bd02-bd6aa8750573Longbiao LiuPart Number: DRV8870 Hi Expert, Regarding the current‑limit feature of the DRV8870, the datasheet only specifies the op‑amp’s range as 9.4 V to 10.4 V, but it does not give the comparator’s accuracy. What is the offset of this comparator, and how much does it affect the current‑limit precision? Assuming we ignore the accuracy of the external Rsense and Vred, what accuracy can we achieve for the internal I_TRIP of the chip? Thanks!DRV8870Applianceshttps://e2e.ti.com/support/motor-drivers-group/motor-drivers/f/motor-drivers-forum/1644965/drv8214-ipropi-pin-behaviour-and-calculation-values-keep-changing/6342843Wed, 13 May 2026 02:48:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:c7dc1d2f-7ff3-48aa-9c63-3b02e89b7123Avyaktha TantryThe yellow line represents the actual current waveform measured across the motor using a current probe and the red line is the output voltage across the IPROPI resistor. The two images shown are measured from the same setup at different times. The CS_GAIN_SEL has not been changed it has been set to 010b having 1125uA/A gain.https://e2e.ti.com/support/motor-drivers-group/motor-drivers/f/motor-drivers-forum/1642148/drv8305-current-shunt-amplifiers/6342625Tue, 12 May 2026 22:32:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:73689d59-db73-4c0c-a7cb-928bfe70271bJoseph FerriHello, Why did you put Vo as 2.52. Vo is what you will be solving for. You can find what you expect the Vo output to be at different current levels. SP-SN will vary based on current (resistor drop) Thanks, Josephhttps://e2e.ti.com/support/motor-drivers-group/motor-drivers/f/motor-drivers-forum/1642219/drv8305-low-side-switches-mosfets-are-significantly-more-hot-compare-to-high-side/6342621Tue, 12 May 2026 22:26:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:2515b43a-e77c-4b94-85cb-17cce1836b2bJoseph FerriHello, Yes, apply PWM to both high and low side. They should alternate phases in order of the commutation you are using. You will have one phase PWM high side, One phase PWM low side, and one phase high z. Thanks, Josephhttps://e2e.ti.com/support/motor-drivers-group/motor-drivers/f/motor-drivers-forum/1643395/drv8353r-response-to-hall-error/6342613Tue, 12 May 2026 22:20:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:0de15a1d-e1d5-4deb-9ef2-a9f3946392a6Joseph FerriHello, The device will behave accordingly: With all inputs 1, you will see the highlighed behavior. you can consult the table for the other combinations of highs and lows as well. This is my understanding of your question. Thanks, Josephhttps://e2e.ti.com/support/motor-drivers-group/motor-drivers/f/motor-drivers-forum/1644151/drv8323-application-questions/6342564Tue, 12 May 2026 21:50:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:ccea6010-2ebb-4ccc-a47b-c56b6fe0f04aJoseph FerriHi Terry, 1. With no VM, device will not be powered, no pins will be driven. With enable high there may be some tiny amount of leakage (few uA) due to internal pull down resistor for ENABLE pin. We expect this to be negligible in the application 2. With no VM, device will not be powered so no pins will be turned on. There is not a leakage concern for this condition. 3. There is no power sequence required for the VREF and VM supplies. 4. Is the application a motor? If you have INHA and INLB high, there will be a path from High side A mosfet through the load/motor, through the GND of lowside B. This will not damage the driver and is a typical use case during regular operations. Can you provide more information on the damage that occurred? 5. If VM is off, there will be no response to any inputs. Thanks, Josephhttps://e2e.ti.com/support/motor-drivers-group/motor-drivers/f/motor-drivers-forum/1645146/drv8701-drv8701-with-a-higher-source-sink-current/6342552Tue, 12 May 2026 21:32:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:a2d60834-4f7e-423a-91cb-6f47a2c91733Shinya MoritaHi Thank you for your questions. will be review and feedback to youhttps://e2e.ti.com/support/motor-drivers-group/motor-drivers/f/motor-drivers-forum/1642148/drv8305-current-shunt-amplifiers/6342485Tue, 12 May 2026 20:43:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:bb4a5532-746c-4743-9ea5-a067f192eaa4Hussain KhodadadiHello, I will be thankful if you help me with measuring current by shunt. Best regards Hussainhttps://e2e.ti.com/support/motor-drivers-group/motor-drivers/f/motor-drivers-forum/1641578/lmg2100r044-surge-and-dedicated-high-side-power-supply/6342469Tue, 12 May 2026 20:28:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:ae521e7f-ad5d-4f53-99b7-f459f3498805EricLeeHello Hideki The device turns off the switch between VCC and HB when V(HB-HS) is greater than ~5.0V to disconnect the HB capacitor charging path. This works as HB-HS clamp. For more investigation, please measure V(HB-HS), and capture some zoom-in waveforms when a surge is seen at V(SW-PGND). -Elhttps://e2e.ti.com/support/motor-drivers-group/motor-drivers/f/motor-drivers-forum/1645053/drv2624-question-about-drv2624/6342348Tue, 12 May 2026 18:34:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:9e0cd0ee-b44b-44da-bfaa-983d29c4c370Hailong ChenThe schematic and LRA model look good. No issue identified.https://e2e.ti.com/support/motor-drivers-group/motor-drivers/f/motor-drivers-forum/1643917/drv3901-q1-issue-with-shared-spi-bus-microcontroller-bq79731-uir-and-drv3901-q1-pyro-switch/6342336Tue, 12 May 2026 18:25:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:e8d65411-0ac6-4ee9-92c2-fc5d09045228Ibinu Alaudeen NadeeraHello Yaksh, This is really helpful. I would recommend couple of steps. 1. Can you try the REINT-NAD after completing power up. 2. If #1 does not solve SPI read back please try NAD_OVERRIDE = 1h and ASSIGNED_NAD to be the needed NAD address. Thanks, Ibinuhttps://e2e.ti.com/support/motor-drivers-group/motor-drivers/f/motor-drivers-forum/1645154/lm3s2616-rdk-bdc-cd-downloadTue, 12 May 2026 18:16:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:2d054fcc-091d-4eff-9a5a-1896ea22f88bAlan MillardPart Number: LM3S2616 I was emailed a download link for RDK-BDC-CD-673.zip, but I get a "404 Not Found" error code: prod_no:RDK-BDC-CD-673.zip opn: null ref_url: https://software-dl.ti.com/stellaris/stellaris_apps_public_sw/latest/RDK-BDC-CDRoboticsLM3S2616https://e2e.ti.com/support/motor-drivers-group/motor-drivers/f/motor-drivers-forum/1644965/drv8214-ipropi-pin-behaviour-and-calculation-values-keep-changing/6342266Tue, 12 May 2026 17:35:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:1fb2c3bd-91ea-4017-9687-93055c652307David MedisHello, Are these two signals on the scope both IPROPI from two different devices? If so, I would suggest making sure the gain settings (CS_GAIN_SEL) are the same across devices. Best, David