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Frequent questions

  • [FAQ] DRV8245S-Q1LEVM: How to fix the DRV8245S-Q1LEVM not connecting to GUI and nFAULT not working?

    Part Number: DRV8245S-Q1LEVM Our team recently discovered an issue with the recently released DRV8245S-Q1LEVM. The EVM fails to connect to the GUI, and the nFAULT LED doesn't display the status of the nFAULT signal on the microcontroller. This is…

  • [FAQ] How to evaluate a DRV8889A-Q1 stepper motor driver using a DRV8889-Q1EVM?

    Part Number: DRV8889-Q1EVM Other Parts Discussed in Thread: DRV8889-Q1 , The DRV8889A-Q1 stepper motor driver is a variant of the DRV8889-Q1 driver with the following differences. Programmable blanking time, t BLANK . As shown in the data sheet, section…

  • [FAQ] What are the best alternate devices for DRV8432?

    Part Number: DRV8412 Other Parts Discussed in Thread: DRV8432 , , DRV8462 , DRV8262 , DRV8962 As DRV8432 moves into the end of its life the next step is to choose an alternative part. This device had a broad application base in medical devices, portable electronics…

  • [FAQ] Tackling BLDC Datasheets: Strategy and Resources

    Welcome to a new FAQ series, Tackling BLDC Datasheets. A datasheet is the most comprehensive and accessible literature publicly available. Texas Instruments provides comprehensive datasheets presenting enormous amounts of information and data about an…

  • [FAQ] Program MCx BLDC motor driver through I2C using MSP430 LaunchPad

    Other Parts Discussed in Thread: MSP-EXP430FR2355 , MCF8316A , MCF8316AEVM , MCF8315A , MCT8329A , MCT8315A , MCT8316A The MCx8xx family of integrated motor drivers contains registers and on-board EEPROM that can be interfaced and programmed using an external…

  • [FAQ] Why do SHx and GHx Float?

    The reason that SHx floats is due to the high-side gate architecture. When the low-side FET is not on, the leakage from SHx will have no path to ground which means that SHx will float up to VM, through the body diode of the FET, as shown in the diagram…

  • [FAQ] DRV89xx-Q1 PWM FFh settings behaivior

    Other Parts Discussed in Thread: DRV8910-Q1 , DRV8904-Q1 , DRV8906-Q1 , DRV8908-Q1 , DRV8912-Q1 DRV89xx-Q1 (DRV8904-Q1,DRV8906-Q1,DRV8908-Q1, DRV8910-Q1, DRV8912-Q1) device has internal PWM generator. When PWM Duty is set as FFh(max), it is very close to 100…

  • [FAQ] How to determine which MOSFETs a gate driver can support?

    Other Parts Discussed in Thread: DRV8329 , DRV832X When determining the MOSFETs a gate driver can support one of the specifications that should be looked at is the maximum average gate current that the gate driver can supply. To switch a MOSFET gate drivers…

  • [FAQ] DRV8353RS-EVM: How to avoid damaging your DRV8353Rx-EVM with too high IDRIVE

    Part Number: DRV8353RS-EVM Other Parts Discussed in Thread: CSD19532Q5B , DRV8353 The DRV8353Rx-EVM is a 100V-capable evaluation module that can be used to evaluate the functionality and features of the DRV8353Rx. The DRV8353Rx drives 6 CSD19532Q5B 100V…

  • [FAQ] Common MCx Schematic and Layout Q/A

    In this E2E FAQ we will cover frequently asked questions about MCx devices in schematic and layout stages of design. 1. How should I configure the Thermal Vias on the BLDC motor driver device? A common equation we use for the thermal resistance of vias…

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