• DRV8837: Dead time of DRV8837

  

  Troyson Li

  TI Thinks Resolved

  Part Number: DRV8837 Other Parts Discussed in Thread: DRV8838 Hi team, Does DRV8837 have installed dead-time control in brake mode ? It seems to cause a short circuit by putting high levels into both IN1 and IN2 Thank you!

  • over 6 years ago
  • Motor drivers
  • Motor drivers forum

• DRV8837: DRV8837 goes into sleep mode

  

  Hank Zhang

  TI Thinks Resolved

  Part Number: DRV8837 PIN.7 is nSLEEP.Logic low puts the device in low-power sleep mode,but we need GPIO to control nSLEEP. We don't have any extra GPIO to use. Is there any other way to enter sleep mode?For example, IN1 and IN2 are logic low at the same…

  • over 6 years ago
  • Motor drivers
  • Motor drivers forum

• DRV8837: Motor driver

  

  Pallavi Aggarwal

  TI Thinks Resolved

  Part Number: DRV8837 Hi, I have connected nSLEEP, IN1, IN2 to the controller GPIO's. Everything is working fine but when I check the current that my circuit draws when nSLEEP = 0, it shows 1.1mA (exclusive of other peripherals on board). The datasheet…

  • over 4 years ago
  • Motor drivers
  • Motor drivers forum
Answered

• DRV8837: Does it make sense to apply a PWM to the sleep pin?

  

  Gordo

  Resolved

  Part Number: DRV8837 Hi E2E We have a product that uses a DRV8837 (part marking looks like "837 OAI CHJF") to control a DC motor. I've taken over the project and am trying to understand how the motor control was implemented. The data sheet says…

  • Resolved

  • over 3 years ago
  • Motor drivers
  • Motor drivers forum

• DRV8837: The control side does not have the waveform

  

  Cherry Zhou

  Part Number: DRV8837 Engineering: Design a valve drive for a gas meter by using the drive chip DRV8837. Issue: no output on the control side, but there are waveforms on both ends of the chip-to-motor, as the figure below shows: The customer would…

  • over 4 years ago
  • Motor drivers
  • Motor drivers forum

• DRV8837: VM is overvoltage when rotate the motor by hand

  

  Yuting Li

  TI Thinks Resolved

  Part Number: DRV8837 Hi Team, When rotate the motor by hand, the voltage of DRV8837 VM is higher than 12V. Will it damage the device? Any way to avoid it? Thanks.

  • over 3 years ago
  • Motor drivers
  • Motor drivers forum
Answered

• DRV8837: out-of-specs observed Rdson

  

  TTCose

  Resolved

  Part Number: DRV8837 Hello, We currently use the DRV8837 in the following manner : it is a secondary low-voltage driver for a high-power torque motor. Its purpose is to allow a finer control of the motor current, when the torque needed is low. The…

  • Resolved

  • over 4 years ago
  • Motor drivers
  • Motor drivers forum

• DRV8837: Can the DRV8837 work normally at an altitude of 3000-4000 meters

  

  Robin Zhou

  TI Thinks Resolved

  Part Number: DRV8837 Dear TI Experts~ Please help me check the impact of altitude on the DRV8837 chip. Can the DRV8837 work normally at an altitude of 3000-4000 meters? The product is a E-lock Thanks, Robin

  • over 5 years ago
  • Motor drivers
  • Motor drivers forum

• DRV8837: Motor Protection

  

  Electro_crazy

  TI Thinks Resolved

  Part Number: DRV8837 Hello, Is it required to connect a varistor or birectional TVS diode in parallel to motor for protection against high voltage spikes? or does the IC provides protection against inductor current?

  • over 5 years ago
  • Motor drivers
  • Motor drivers forum

• DRV8837: How do we measure rotor speed if we don't use magnetic encoder

  

  Miles Li1

  TI Thinks Resolved

  Part Number: DRV8837 Hi team, Customer is now using magnetic encoder for rotor speed control, but now they don't want to use this any more for the cost. So, they are asking whether do we have other method to measure the speed? For example, the current…

  • over 3 years ago
  • Motor drivers
  • Motor drivers forum

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