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DRV830x current sense settling time and crosstalk
Hello everybody,In a FOC control of Brushless motor, I am facing issues when using small duty cycle of PWM. In fact the more the duty cycle is small the more the current should be stable fast because...
View ArticleDRV8884/85 OCP trip level
Hello,Our customer uses the DRV8884 and the DRV8885.The customer will decide the capability of the power supply, then the customer has a question.How about the typ value of the OCP trip level of the...
View ArticleDRV8824 Isense pin open
Hello,Our customer uses the DRV8824, has a question.If the Isense pin of the DRV8824 is open, is the DRV8824 damaged?I think the H-bridge are ON, the voltage of source terminal of the low side FET is...
View ArticleDRV8301 PVDD1 vs PVDD2
Excuse my ignorance but what is the difference between PVDD1 and PVDD2 on the DRV8301-69M kit?Why would i use one or the other?Which one is which?Thank you in advance
View ArticleDRV8307 PWM DUTY
HII have some question about PWM of DRV8307.1. PWM duty cycle range (datasheet: 0~100%) what is minimum duty for stop? and maximum duty(recommended condition)?2. datasheet: If it is changed while...
View ArticleDRV8301-69m Sine Wave
Hello, I have a custom motor and DRV8301-69M setup. I have been able to successfully spin my motor using the Motorware labs but have noticed when using my oscilloscope that it is being driven through...
View ArticleDRV11873 direction control
Hello, I am really confuse about direction reverse feature of drv11873 because in datasheet there is given that if FS=0 pwmin should be low for 300us. should that 300 us exact or minimum 300 us? can i...
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Extra schottky diode in Drv8711 circuit
Hi ,1) I use IRF640 for power Mosfet in Drv8711 circuit , this mosfet has one catch diode and I don't place any extra diode for H-bridge , should I place any diode ?like this or this one .2) Does it...
View ArticleNo output for PWM inputs in DRV8412
Sir,I am using DRV8412 in my PCB for dual TEC control and using Mode 1 for cycle-by cycle limit.Currently I am trying to drive a 12V-2.5A TEC through Output C & D and left open outputs A&B....
View ArticleChopping current of DRV8880
Dear sir.equation about 18 pagehttp://www.ti.com/lit/ds/symlink/drv8880.pdfTRQ is the percentage value in the datasheet.Is TRQ ratio value ?plz help me.
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DRV10970 - Sinusoidal output & speed variability
I am working to develop a BLDC motor driver. The selected motor is a Faulhaber 2622, 6V version, datasheet attached. I'm using the DRV10970 eval board and have configured the board properly such that...
View ArticleTPL7407L - Some questions
Hi all,Would you mind if we ask TPL7407L?<Question1>On the datasheet P11, there is optional diode between VSUP and COM.How much of rated voltage's diode should we use?<Question2>On the...
View ArticleSeries Capacitor on Output to Inductive Load on DRV 8800
I have read all of the datasheets and technical notes regarding this motor driver and I can't seem to find anything regarding this specific application.I want to put a bipolar capacitor in series with...
View ArticleTPL7407L - with unipolar stepping motor
Hi allWould you mind if we ask TPL7407L?Please refer to the following file.(Please visit the site to view this file)Could you give us some advice?Kind regards,Hirotaka Matsumoto
View ArticleMinimum controllable rpm with DRV11873
Dear,I am using the DRV11873 to control a small Faulhaber 1509T006 brushless DC motor. I have built the schematic of section 9.2 in the datasheet and since the motor does not have a COM pin, I have...
View ArticleTPL7407L - Regulation Circuitry
Hi allWould you mind if we ask TPL7407L?On the datasheet P7, the datasheet shows "Regulation Circuitry" .Does "Regulation Circuitry" has per driver?(Are there seven Regulation Circuitry? or only one...
View ArticleTPL7407L - Ccom
Hi allWould you mind if we ask TPL7407L?On the datasheet P9 shows that Ccom is 0.1uF.We guess that this is to reduce noize, why is 0.1uF used for?And if it has some formula to caluculate, could you...
View ArticleDRV11873 Damage
Hello,I am working on BLDC motor circuitry using this driver DRV11873. There is on problem associated with this driver which I faced multiple times. I am operating this IC at 15V and 100% PWM. If I...
View ArticleDRV8835 TEC H-bridge application
Revised a working TEC design for new board to use DRV8835, smaller, fewer components, and added protection.But think the protection is causing problems.Would like opinion if something I can do before I...
View ArticleTPL7407L - Vcom belos 0.5 V/us and Absolute Maximum Ratings
Hi allWould you mind if we ask TPL7407?We are sorry to keep pestering you.<Question1>The datasheet on P13 shows,"The COM pin must be limited to below 0.5 V/μsTo prevent overvoltage on the...
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