DRV8301 Failures - Gvdd_uv and Unspecified
I'm working on getting a prototype running and have had three DRV8301 failures in the last week. The system is being powered from a 12v Duracell Ultra deep cycle, 35Ah battery, through an ideal diode....
View ArticleRE: DRV8332: What is the level of isolation between output stage and...
HI Rick: Thanks fro the reply. I discussed this more with customer. He said because of additional 12V supply, he had wrong assumption that PVDD are isolated from GVDD internally. His question was...
View ArticleRE: DRV8301: GL_A damage
Hi Derek, What is the PVDD voltage? What is VDD_HV? How are GND and PGND connected?
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DRV8301: GL_A damage
Part Number: DRV8301Hi Team:My customer is using DRV8301 in their project. And some chip will show GVDD_UV ERROR. And test find the GVDD volatge is only 3.3V. And we verify the pin impedance and find...
View ArticleRE: DRV591: DRV591 application
Hi Nanfang, Our experts have been notified and should reply soon.
View ArticleRE: DRV8837: Parallel Motor Connected
Hi Pavaman, What are your voltage and current requirements? Do the motors operate in both directions? Are there any additional requirements when operating the motor such as current regulation?
View ArticleDRV8837: Parallel Motor Connected
Part Number: DRV8837HiI am currently using DRV8837 to drive one motor. Is there any cost effective solutions to drive four motors. But all the four motor need not be driven at same time ? 1.Is there...
View ArticleRE: DRV8307EVM: DRV8307EVM Input voltage noise
Hi eb1984, Our experts have been notified and should reply soon. What was the starting PWM duty cycle and what was the final PWM duty cycle? Was it changed gradually?
View ArticleRE: BOOST-DRV8711: Reading BEMF voltage in EXSTALL mode
Hi Sagar, Please see post e2e.ti.com/.../560587 for more details regarding the STEP frequency.
View ArticleBOOST-DRV8711: Reading BEMF voltage in EXSTALL mode
Part Number: BOOST-DRV8711Hi,I have few queries:1. Is the BEMF measured at 90, 180, 270 and 360 degrees of the coil current waveform in EXSTALL mode?2. Is the STALLn/BEMFn triggered at 90, 180, 270 and...
View ArticleRE: DRV8307EVM: DRV8307EVM Input voltage noise
Hi, The pwm duty cycle changes between 25% and 90% and it is not changed gradually, because of my code on some situation i have to change the duty cycle in a short time.
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DRV8307EVM: DRV8307EVM Input voltage noise
Part Number: DRV8307EVMHi,I am driving a 3-phase bldc motor with drv8307evm board. When i change the pwm duty cycle, there exists a voltage noise on 24V DC input voltage. How can i terminate it? By the...
View ArticleRE: DRV591: DRV591 application
Hi, Nanfang,We usually specify only the typical maximum output current. The maximum output current the device can drive over different temperature rating is depicted in figure 13 of the datasheet.This...
View ArticleDRV591: DRV591 application
Part Number: DRV591Hello All,My customer Huawei uses DRV591 to drive TEC, the output current will reach 3A when the temperature is -40C. They want to know:1. In our datasheet, the max output current is...
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RE: DRV8701 new design
Currently we are using motor driver with high inrush as shown.48A peak < 50ms see attach photo.Does the DRV8701 has the inrush limit so we don't exceed the battery max of 36A < 2s rating?
View ArticleRE: DRV8701 new design
Hi Khoi, Please refer to equation 1 of the datasheet. The inrush current limit can be set by adjusting the VREF voltage and sense resistor. Depending on the system, the current level could be set lower...
View ArticleDRV8701 new design
I'm designing with DRV8701. From the DRV8701EVM5.9 to 45V operating voltage range15A continuous / 20A peak H-bridge output currentDrives a single bidirectional brushed DC motorCan we increase the...
View ArticleRE: DRV8301: DRV 8301 SPI write not working
Hi Saraj, Please refer to post: e2e.ti.com/.../1723924 This is similar to what you are describing. It is important to ensure nSCS is "framing" the SPI command as described on page 21 of section 7.5.1.1...
View ArticleRE: DRV8837: Parallel Motor Connected
Voltage Vm is of order 5-30V. Motor Current consumption is of 750mA at 9V. The motor coil DCR is of 12ohms. Yes, motor operates on both direction. In the existing DRV8837 the current regulation is not...
View ArticleRE: DRV8301: GL_A damage
Rick: I reply you in email and attached the design file.Thanks.
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