Clik here to view.
Problem connection with DRV8848EVM and GUI software
Hi everyone, just got the DRV8848EVM REV A and trying to get it brought up using the PC software.USB driver is installed and device is in device manager with an assiged COM port.GUI composer looks to...
View ArticleRE: DRV8837 / Input logic low current
Zuo-san, Thank you for your help.> But in SLEEP mode, this leakage should be also controlled. >So the input internally is almost a 100k pull down resistor. Does it mean that the input current is...
View ArticleRE: DRV8837 / Input logic low current
Hi Kuramochi, It will depend on the external inputs condition. For the 100k pull downs are alway there, if in SLEEP state, the external inputs have a 0.5V voltage, that means 0.5/100k = 5uA. This is...
View ArticleRE: DRV8837 / Input logic low current
Zuo-san, Thank you for your quick response. I'm recognizing that Input logic low current can be ±5uA at VIN=0V on sleep mode because the ±5uA is guaranteed value. Is it correct? And could you tell me...
View ArticleRE: DRV8833C HTSSOP .bxl File
Hi Rick, Yes, that is the .bxl file that was downloaded. I just viewed it again and the QFN layout appears. The title on the "default" layout view in Ultra Librarian Reader is "Designator 38". I...
View ArticleDRV8833C HTSSOP .bxl File
Hi,I'm looking for the .bxl file with the correct layout information for the HTSSOP version of the DRV8833C. The version posted on the TI website actually contains the layout information for the...
View ArticleClik here to view.
RE: DRV8307: Issues driving a BLDC motor
1.) Can you probe the HW+ / HV+ / HU+ pins with the halls from the motor connected and VREG up? You should not see all the halls logic-high or logic-low at the same time.With the motor winding...
View ArticleRE: DRV8307: Issues driving a BLDC motor
I still haven't figured out what's going on. Any other ideas from your end ?
View ArticleClik here to view.
RE: DRV8880 GUI install issues
Hello, The installation program might be having issues with proxy or firewall settings. You could try to download/install runtime and application in two different steps. Please try following:1)...
View ArticleRE: DRV8307: Issues driving a BLDC motor
Hi, The hall sensor pins should be connected based on the motor datasheet. Are you able to see the three H+ pins toggling between different states if VREG is up and you manually spin the motor? Do this...
View ArticleRE: DRV8307: Issues driving a BLDC motor
It turns out after hours troubleshooting, the motor hall sensors required pull up resistors. After adding the modification, the motor runs fine now. Thanks once again for your help, and assistance with...
View ArticleRE: Problem connection with DRV8848EVM and GUI software
Thanks heaps Rick. Everything was correct, the LED was flashing and it was the correct COM port, waiting did not help. Your second reply was spot on, uninstalling and reinstalling GUI Composer solved...
View ArticleRE: Per Unit defination
Hi, Per-unit is counting the value in ratio to a base value. So just found the definition of what the base value is in the code or docs. From you question, the base value is already defined. Also you...
View ArticlePer Unit defination
Hello,I am not sure what per unit means. In 2XDCMotor-setting.h file it defines Base_Voltage =66.32 and Base_Current=7.2Amp. I am driving DC Brushed motor rated @24VDC and 0.35Amp.If I set Vref1=0.5 –...
View ArticleRE: CMOS Bidirectional H-bridge DC motor drivers
Thank you Rick Duncan. I zeroed on DRV8871. Need little more help please. Am using a geared DC motor to operate water valve. My DC motor is rated 12V - 20mA max No Load and 800mA max Full Load &...
View ArticleClik here to view.
RE: Temperature of the stepper motor
Hi Phil,Excuse me for my long delaytop layerand bottom layerthanks for your response.
View ArticleRE: CMOS Bidirectional H-bridge DC motor drivers
Hi Ravi, Would recommend a 0.1uF ceramic + 47uF(100uF better) Tan/Al for the VM decoupling in your case. Please put the 0.1uF close enough to the VM pin and the 47uF also as close as possible to VM and...
View ArticleCMOS Bidirectional H-bridge DC motor drivers
Hi,Can someone please suggest me CMOS Bidirectional H-bridge DC motor drivers with 12V 500mA drive capability. I have considered SN754410 & L298 drivers but both of them need 5V for VCC1 pins - but...
View ArticleClik here to view.
RE: Temperature of the stepper motor
Hi Mohammadmehdi,Thank you for the screen captures. If you look at the ground pour underneath the DRV8711 the path for heat to escape from the package into the ground plane is constricted. This will...
View Article