Question on DRV10983EVM
I just bought an eval board for DRV10983 but had a problem powering it up.I followed the instruction on the quick start and installed all the drivers and software for the eval board. However, when I...
View ArticleSN754410 - Thermal shutdown
Hi allWould you mind if we ask SN754410?<Question1>How much is TJ temperature which the device start to protect(operate) the thermal shutdown function?Over 150C or less that...
View ArticleDRV8825EVM
Hi.What's the maximum working temperature at 2.5A about the evalutation DRV8825EVM ?I want to use the drv8825 for a new design (1.7A 12V) bipolar stepper motor device, but it's not easy to dimension a...
View Article[ DRV8303 ] Output Disable without EN_GATE control
[ DRV8303 ] Output Disable without EN_GATE controlHi,Can you please let me know whether DRV8303 output can be disabled without EN_GATE pin control?I know that DRV8303 can be in low-power mode by...
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[ DRV8303 ] Short nFAULT pulse during EN_GATE control
[ DRV8303 ] Short nFAULT pulse during EN_GATE controlHi,My customer has reported that nFAULT pin toggles for a while when they control EN_GATE pin from high to low, low to high. The datasheet says...
View ArticleDRV8885 chopping current caiculation
Hello,Our customer uses the DRV8885, control RREF with a DAC.He calculates the chopping current by equation (2) on the datasheet P18.The answer is 890mA, at the RREF is 20kOhm.It is mentioned the...
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DRV3201-Q1 EN/RSTN and Sleep Mode(A-2)
Hello, Please confirm my understandings of Mode behavior is correct or not for Case-1 and Case-2.Best Regards.
View ArticleDRV3201-Q1 BOOST UV(A-19)
Hello, Please confirm following my understanding is correct or not. When boost undervoltage flag is not set in SPI status register 1 (STAT1), boost voltage is surely above VBOOST,UV (11 V to 11.9 V) in...
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DRV3201-Q1 VS voltage and Current Sense Amplifier(A-73_74)
Hello, Please answer following question from customer. Q1:Datasheet describe following.Please let me known which VO1/2 waveform is correct when VS is 4.75V to 6V and expected VO1/2 waveform is 0.5V to...
View ArticleDriving a BLDC/ PMSM without encoder
Hello there,I am planning a BLDC/ PMSM motor driver build from scratch. I was wondering, in case of BLDC motor is there any way to acquire actual motor position more accurately than 60* (from hall...
View ArticleLMD 18245 Failures
We have been using the LMD18245 for years now. However, on one of the newer product we have had some excessive amount of failures with these parts. Sometimes these parts have damage but most times they...
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DRV3201-Q1 Startup Sequence and Functional Mode (A-39)
Hello, Please advise the functional mode after following Case-1 and Case-2 startup sequence is applied to DRV3201-Q1. Best Regards.
View ArticleDRV3201-Q1 EN/RSTN and Functional Mode (A-51)
Hello, Please advise functional mode of DRV3201-Q1(Sleep Mode or Active/Reset Mode) after EN and RSTN changed High to Low at the same time. Best Regards.
View ArticleDRV3201-Q1 Fault detect function during Loss of clock detection test/VS...
Hello, Please advise if following fault detection works or not during Loss of clock detection test/VS comparator test. 1)VS undervoltage 2)VS overvoltage 3)Boost converter undervoltage 4)HS VDS error...
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DRV3201-Q1 Maximum value of tdeg,ENon ( A-56)
Hello, tdeg,ENon doesn’t have maximum value.Please give me any information of maximum value of tdeg,ENon. Best Regards.
View Articleregarding the DRV8829 EVM code for indexer mode operation on board
Hi,I would like to operate the stepper motor in the indexer mode operation on board not connecting to the GUI of the CPG006_DRV88XX, so can anyone suggest me with the below points how that can be done....
View ArticleDRV8885 Output connection
Hello,Our customer uses the DRV8885, confuse a little.In the case of P12 on the datasheet,the OUT1 connect to (+)terminal of the coil.In the case of P27 Fig.25 on the datasheet,the OUT1 connect to...
View ArticleField oriented control in a BLDC motor with trapezoidal shaped back emf
Hello there,I am doing a project on BLDC motor to use it as a traction motor in a hybrid electric vehicle. The motor which I am using is having a trapezoidal shaped back emf.I read from many articles...
View ArticleDRV3201-Q1 State change between Global Reset and another state (A-57/58/59)
Hello, Please answer following questions. Q1:When DRV3201-Q1 is in Active Mode and internal temperature pass over Tmsd2, state changes to Global Reset.Please advise if DRV3201-Q1 changes to Global...
View ArticleDRV3201-Q1 Internal pull-up of RSTN, DRVOFF, B_EN and NCS considering the...
Hello, Following terminal have internal pull-up.RSTNDRVOFFB_ENNCSPlease advise why these terminals have pull-up, and is it all right under the condition of terminal’s open considering the Functional...
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