DRV8305: Problem on nFault and GHA output
Part Number: DRV8305Hello, Regarding to nFault and GHA output on DRV8305, my customer is asking some question.They have some problem at driving motor on their application.(Their conditions on...
View ArticleRE: DRV8818: SOA of the output FET
Hello Rick-san, May I ask one more question? Perhaps, the customer will connect larger capacitor in someday. Do you have any data or any experience using the DRV8818 with large capacitor? or Do you...
View ArticleRE: DRV8305: absolute maximum rating of PVDD-VDRAIN
Hi Duncan-san, Thank you for your help. And I am sorry for my confusing English."that input pin of comparator will just be open state" means 'that input pin of comparator will just be open break'. I...
View ArticleRE: DRV8305: Protection features
Hi Beard-san, Thank you always your help. How is your progress? Could you inform me by when you could answer about Min / Max of 'tpd,E-L', 'tpd,E-SD' and 'VDS_trip'? And if you could, please inform me...
View ArticleDRV8305: Protection features
Part Number: DRV8305Dear all,Could you teach about min/max value of 'tpd,E-L', 'tpd,E-SD' and 'VDS_TRIP'?*It is OK that the value is not guaranteed. I would like to know the actual value to think...
View ArticleRE: DRV8842: Microstepping for stepper motor
Hi th133, Please refer to Table 2 in the DRV8824 datasheet for reference. One step angle is a 90 degree change in electrical angle. You will need two DRV8842 to control the stepper motor. Each DRV8842...
View ArticleDRV8842: Microstepping for stepper motor
Part Number: DRV8842I am using DRV8842 to control movement in a stepper motor. The step angle in my stepper motor is 1.8 degrees. How do I use microstepping to rotate the stepper motor by 1 step angle...
View ArticleRE: DRV8305: temperature variation of OTW_CLR and OTSD_SET
Hi Beard-san, How is progress? I would like to know how temperature variation of OTW_CLR and OTSD_SET at 'catalog grade'? How margin should I think over temperature? And if you could, please inform me...
View ArticleDRV8305: temperature variation of OTW_CLR and OTSD_SET
Part Number: DRV8305Dear all,Could you teach me about temperature variation of OTW_CLR and OTSD_SET?At automotive grade, min/max value is written, but catalog grade is not.And typical value of these...
View ArticleRE: DRV8305: nFAULT at startup of DRV8305
Hi Masami-san, Customer might have experienced a warning event. During a warning event, the nFAULT pin pulses low for 56usec and then high for another 56usec. This is described in detail in section...
View ArticleDRV8305: nFAULT at startup of DRV8305
Part Number: DRV8305Dear, AllCustomers are evaluating using DRV8305.A phenomenon occurred in which pulses of the nFAULT signal continued to be output while EN_GATE was turned on after the supply...
View ArticleRE: DRV8818: SOA of the output FET
Hi Aoyama-san, Please see the application report www.ti.com/.../slva670a.pdf Equation 1 can be used as an approximation. Capacitor tolerances should be considered.
View ArticleRE: DRV8701: About the fire of DRV8701.
Hi user4705198, A few more questions: Have any component values been changed from the schematic? Are you monitoring the nFAULT pin? Can you monitor the current when the event occurs?
View ArticleRE: DRV8834: About actual waveform at over current protection(OCP)
Hi Kanemaru-san, Your understanding is correct. We will look if we have any existing OCP waveforms. If not, we can create one, please just allow us sometime. Thank you.
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DRV8834: About actual waveform at over current protection(OCP)
Part Number: DRV8834Hi Team, We understand that the behavior of OCP and H bridges is the following chart.Is my understanding correct? And, our customer would like to know the actual waveform at over...
View ArticleRE: DRV8870: Short circuit protection
Hi Umberto, Probability is quite low for the FETs failing with a high side on and the opposite low side on. For possible solutions, additional protection circuit can be considered. One option is using...
View ArticleDRV8870: Short circuit protection
Part Number: DRV8870Hi, in medical application customers need any kind of protection and not always it is easy to find the right solution.For example, I was asked to suggest something to avoid that due...
View ArticleRE: DRV8305: absolute maximum rating of PVDD-VDRAIN
Hi Yamamoto-san, The VDRAIN can be connected to voltages to -0.3 to 45V independent of the PVDD voltage. There is only a high impedance connection between the two signals. The original intent of this...
View ArticleRE: DRV8305: nFAULT at startup of DRV8305
Luis-san,Thank you for your reply.But the customer also confirms warning when the pulse of nFAULT signal is output.Neither fault nor warning (address 0x1) was on at the first status reading.Thanks,...
View ArticleRE: DRV10983EVM: Install the newest version DRV10983 GUI, but not worked.
I also try use old version. V1.1.1, all was OK.
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