RE: DRV8840 Vout pin open
Hi Naoki,The outputs are internally connected and there is no such OCP change relationship. Also the outputs should be connected externally.Best regards,
View ArticleRE: DRV8432 About application diagram example in datasheet
Hi Shimizu, Sorry for been late. And the 1 ohm is for a filter function to reduce the noise from GND to AGND. Best regards,
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DRV8432 About application diagram example in datasheet
Hi,Could you let me know the mean of 1ohm resistor at GND pin, please?Best regards,Shimizu
View ArticleRE: DRV8840 Vout pin open
Hi Wilson, Thank you for your fast reply. I will feedback the customer this information. Thanks, Naoki Aoyama
View ArticleDRV8840 Vout pin open
Hello,Our customer uses the DRV8840, has a question.There are two pins for Vout. If the one of these pins is opened,does the OCP trip level change from 6A(min.) to 3A(min.) ?Regards,Naoki Aoyama
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RE: Observation on DRV8701EVM Performance with high PWM frequency and low...
Hi Wilson,I have not hear from you on my question.Here is the update on my investigation:Please ignore question 2 and 3, once the load is connected across the H-bridge, the problems with inconsistent...
View ArticleObservation on DRV8701EVM Performance with high PWM frequency and low duty cycle
HI,I have few question regarding DRV8701:1) What is the minimum allowable operating PWM pulse width for DRV8701?2) I am using 64kHz PWM frequency in my application. With DRV8701EVM (Eval-board), I am...
View ArticleRE: DRV8842 VREF pin problem with V3P3OUT * (2K / 3K)
I've changed the resistors and it's ok now. Thank you Rick.
View ArticleRE: DRV8711 high current Stepper Driver
Thanks Rick for answering, Can you guide me with the modifications I should consider in the booster reference design, for driving the required stepper.
View ArticleRE: Observation on DRV8701EVM Performance with high PWM frequency and low...
Hi Wei Meng Sorry for the late response. We still need some more time to answer you question. Also there is a good note for the pre-driver parameters. www.ti.com/.../slva714.pdf . If you haven't read...
View ArticleRE: [ DRV8303 ] Bootstrap Diode Characteristics
Ken,MAX output capability is 20 uA. The majority of this output capability is used to support internal leakage paths. If 100% operation is required we recommend keeping the resistance >1MOhm between...
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[ DRV8303 ] Bootstrap Diode Characteristics
[ DRV8303 ] Bootstrap Diode CharacteristicsHi,Can you please let me know the characteristics of internal bootstrap diode?MinTypMaxUnitNoteForward Voltage[ V ]Forward Current[ mA ]ResistanceOhmThanks,Ken
View ArticleRE: Isolating two DRV8711 for redundancy
I am attempting to isolate VM and GND for the motor circuit behind some SSRs. I will check back in with the result.
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Isolating two DRV8711 for redundancy
I am working on a design that requires redundant motor driver circuits. One circuit will be energized (driving a stepper motor with 24V) while the other is not. This second circuit is located on a...
View ArticleRE: DRV8432 datasheet package pin numbering
Hi Karsten, Please refer to post e2e.ti.com/.../829466 for a prior discussion. Pin 1 location is designated by the circle with 3 lines. The package is used for both a pad up and pad down...
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DRV8432 datasheet package pin numbering
I just looked at the pin numbering on the DRV8432 and it is confusing as hell. In the top you have:Then on the first package part page you have:So according to those, you have the cutted edge with pin...
View ArticleRE: DRV8870 REF input voltage at PWM without current regulation
Hi Shimizu-san,Please refer to section 7.4.2.If current regulation is not needed, pin ISEN should be directly connected to the PCB ground plane. VREF must still be 0.3 to 5 V, and larger voltages...
View ArticleRE: DRV8870 REF input voltage at PWM without current regulation
Hi Rick, Thank you for your support. I posted previous post after reading section 7.4.2. But I understand that VREF must input 0.3 to 5 V at using PWM without current sensing as a this device...
View ArticleRE: DRV8825 Reset Issue
Hello Wilson,Any advice for my problem?Thanks,Saumitra A Deshpande
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DRV8825 Reset Issue
Hi,We have designed a board with 3 DRV8825 Drivers. The main controller is STM32 uC with configuration interface(Microstepping, Reset, Enable, Direction, Decay etc) through 74HC595 & 3 separate...
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