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DRV8305 Damage
Hi everyone..I'm using TMS320F28035 with DRV8305 motor driver. My custom board two layers. Top layer control unit. Bottom layer power unit and there are 6 mosfets (SUM110N06-3M9H-E3). I'm using...
View ArticleRE: DRV8302 Fault pin always zero
Hi Rick,I have run my circuit and Code Composer program. while EnableFlag=1, I have observed the following values.1) PVDD=25V2) GVDD=11V3) AVDD=7V4) DVDD=3V5) EN_GATE=3V6) M_PWM=3.2V7) INL_A=3.2V...
View ArticleRE: DRV8303 Min PWM output frequency
Hi Shimizu,Ideally the device can work at 100% duty cycle which means long time high side gate voltage sustain. So 7 Hz should be fine. Please make sure there is no external GS path even high...
View ArticleDRV8303 Min PWM output frequency
Hi,Could you let me know minimum PWM output frequency, please? I know that max frequency is 200kHz from datasheet.Customer wants to use at 7Hz PWM input(very slow). and sets motor speed by changing...
View ArticleRE: DRV8302 Fault pin always zero
I made my measurements using an oscilloscope so I can see pwm signal .
View ArticleRE: Issues with DRV8833
Hi Rick, nSleep is logic high yes, I put the correct cap values and the motor turns now in one direction only. If I swap the input pins to VCC/GND nothing happens. I haven't found the reason for this...
View ArticleIssues with DRV8833
Hi,I've got a DRV8833 in HTSSOP16 package that I put on a TSSOP16 breakout (without heatsink). This leads to the heatsink not being connected to ground. I assumed this wouldn't matter since it's just...
View ArticleRE: DRV8825 Reset Issue
Also please check if there is any nFAULT signal came out in the abnormal time.
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RE: DRV8825 Reset Issue
Hi Wilson,1) All x595 are supplied by 3.3V/DGND supply lines. This 3.3v is generated off-board & supplied to this board2) All DRV8825 connected to +24V/PGND lines.3) There is single point of...
View ArticleRE: DRV8825 Reset Issue
Hi, Forgot to mention... nFAULT line doesn't get asserted. But since all x595 outputs are set 0, nRESET pin of DRV8825 gets asserted. 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...
View ArticleRE: DRV8711 high temperature
Hi Thorsten, Thank you for the additional information, and for studying the documents prior to contacting us. A few questions about the scope captures and the overall system: 1) What resistance value...
View ArticleRE: DRV8711 high temperature
Hi Rick, 1) R(sense) is 40mR as I wrote above. 2) Signal reference is directly at the gate of the FET, GND was connected to the GND supply input of the board. I can do additional measurements tomorrow...
View ArticleRE: [ DRV8303 ] Bootstrap Diode Characteristics
Hi Phil, Nick,Can you please help me to have the information of trickle charge?I would like to make sure min, typ and max value of trickle charge current.Sorry for rushing you.Regards,Ken
View ArticleRE: DRV8825 / about software.
Hi Nagai,Better to use DRV8824/25EVM. You don't need to use the two together. COM port must be set correctly.Best regards,
View ArticleRE: DRV8825 / about software.
Hello wilson,Thank you very much for rapid reply!Many thanks!Nagai
View ArticleDRV8825 / about software.
Hi all,Please let us know about software of DRV8825EVM.I found the two software, "DRV8824/25 EVM" and "CPG004 DRV88xx EVM".We have questions as follow; - Are these can be used together ? - Can we...
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RE: DRV8711 high temperature
Hi again,I did some additional measurements: Ch1=High side FET gate, Ch2=Low side FET gate, Ch3=Rsense, all GNDs connected to Rsense GND pad.First shot: Same conditions than yesterday (IDRIVEN=01,...
View ArticleRE: How to control current in DRV10983
Hi Datta, Our experts have been notified and should reply soon.
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