RE: DRV8307 motor speed control question
Hi JackyDRV8307 only has PWM duty cycle open loop control. The speed is not under close-loop and no feedback. DRV8308 has internal close-loop speed mode. Best regards,
View ArticleDRV8307 motor speed control question
Hola,Does the motor speed control of DRV8307 is Open Loop Control or Feedback Control？Thanks ～
View ArticleRE: DRV8711 doesn`t start
Hi! It seems I have a problem.I have only 1.3V on V5, 0.3 on Vint and 12V on VCP.My control pins are Sleep -> 5V(high), Reset 0V(low).Any suggestions?Thanks!(Please visit the site to view this file)
View ArticleRE: DRV8825 EV board driver issue
Hi Jacky, Did you try to install in compatible mode? We will check and get back to you later. Best regards,
View ArticleRE: DRV8711 doesn`t start
Do I have to connect BIN1 and BIN2 directly to GND or I have to leave them unconnected?
View ArticleRE: DRV8711 doesn`t start
Hi Pavlin, It appears like the device has either been damaged or there is some type of connection problem to the board. If you have a second board, please try it for confirmation. The R1 and R3 values...
View ArticleRE: DRV8825 EV board driver issue
Hi Jacky, If the installation fails again, please click the Details and provide the information.
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DRV8825 EV board driver issue
Hola,I have downloaded the USB driver and application program of DRV8825, but it has an error when installing as below figure.May I know that where the problem is？ Thanks...
View ArticleRE: DRV8711 doesn`t start
I`m sorry R1=R3=0.22ohms. I`ve missed that! I have another board! I`ll solder it and try again! But this time I`ll leave BIN1 and BIN2 unconnected (not connected to GND as in present case).
View ArticleRE: DRV8305 operated at 6V possible?
Hi Weinan,The warning pulse is just a warning, it does not effect functionality of the DRV8305 down to 4.4 V.You can clear the warning with a read from the SPI Status Register 1. There is no way to...
View ArticleRE: Supply Voltage and Current for DRV8308
Hi Phil,We are happy to unsolder the zener diode, but we are worried about losing any potential warranty on the board. If nothing works out in our diagnostics, do you know whether it will be possible...
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RE: DRV8825 EV board driver issue
Hola Wilson & Rick,I had attached the install log file in previous mail and below screen capture for your kind information. Thank you ～(Please visit the site to view this file)In addition, the file...
View ArticleRE: DRV8303 output impedance (reconfirm)
Hi Naoki, Thank you of your explain on the application. We will check and get back later. The internal pull down is not always presented there. So now what we focus is when EN_GATE low, whether we can...
View ArticleRE: DRV8303 output impedance (reconfirm)
Hi Wilson, Thank you for your reply. That's right. The customer will decide the value of external voltage that the external FET active and not to flow much current to GL_x pin. Regards, Naoki Aoyama
View ArticleDRV8303 output impedance (reconfirm)
Hello,May I reconfirm about the impedance of the GL_x ?Our customer uses the DRV8303,has some questions about the impedanceof the GL_x pin.Q1)It is mentioned the impedance of GL_x is from 1.6kohm to...
View ArticleRE: DRV8818 Ichop
Hi Naoki, When you say no response, do you mean the current level is not changing according to the Vref/Rsense equation or there is no response from the motor position? In normal case, if the motor is...
View ArticleRE: DRV8818 Ichop
Hi Wilson,'no response' mean the current level is not change. I will check the condition of the customer using. Thanks, Naoki Aoyama
View ArticleDRV8818 Ichop
Hello,Our customer uses the DRV8818, with half step mode.The customer wants to control the current of the motor while keep some state.So, they change the value of the VREF voltage while keep some...
View ArticleRE: Supply Voltage and Current for DRV8308
Hi Charlie,I would suggest consulting customer support, ultimately they'll be in charge of handling the replacement if they deem it necessary.
View ArticleRE: DRV8711 - Slow Decay works in a strange way
Hi Nick, Slow decay can act this way. It depends on the system voltage, the motor inductance, the blanking time, the off time, and the step speed. In slow decay, the DRV8711 is injecting more current...
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