RE: DRV8802: How does DRV8802 stop the motor current?
Hi Ueda-san, Current flows based on the following: nSLEEP high nRESET high xENBL high xVREF voltage If xVREF is low (0V), current should flow for the blanking time as a minimum. If xVREF is open,...
View ArticleDRV8802: How does DRV8802 stop the motor current?
Part Number: DRV8802Hi champs,Woudl you teach me about that DRV8802 do or do not outputs motor-current following under conditions?xVREF pin: openDECAY pin: LowxENBL pin: HighIn my understanding, when...
View ArticleRE: DRV8301: How to improve the switch ring found on Vgs
Hi Young,If your customer increases the gate resistor value does this ringing get smaller? I would suggest increasing the 10 ohm resistor to 30 or 50 Ohms and determine if a slower slew rate improves...
View ArticleRE: DRV8832: VSET voltage dead band
Hello Kaizawa-san, Sure no problem, I will work on this and reply as soon as possible.
View ArticleRE: DRV8802: How does DRV8802 stop the motor current?
Hi Rick-san, Thank you very much. Could you please teach me how do I stop current flowing? Regards, Shinji Ueda
View ArticleRE: DRV8802: How does DRV8802 stop the motor current?
Hi Ueda-san, To stop current in one winding set AENBL or BENBL low. To stop current in both windings, do one of the following: 1) set both aENBL and BENBL low 2) set nRESET low 3) set nSLEEP low.
View ArticleRE: DRV8835: Rds(on) when supplying 3V to VCC
Hi Kato-san, I have been able locate VM=5V with VCC = 3V only. I need to discuss the data prior to sending it. I hope to be able to send the data tomorrow.
View ArticleRE: DRV8802: How does DRV8802 stop the motor current?
Rick-san, Thank you very much! Regards, Shinji Ueda
View ArticleRE: DRV8835: Rds(on) when supplying 3V to VCC
Hi Rick-san,Thank you for your special support.I am looking forward to getting the information for VM=1.5V, 2.0V, 2.5V and 5.0V from you.Best regards,Kato
View ArticleRE: DRV10983: Driving a BLDC faster than 51 Hz
Hi Matt, The SpdCtrl setting actually can't be substituted into Equation 7. SpdCtrl is the digital representation of the duty cycle where 0x01FF (511) corresponds to 100% duty cycle (see 9.3.3 in the...
View ArticleRE: BOOSTXL-DRV8305EVM: i am performing projeclab02b BLDC motor rotation...
Thank you ! Rick Duncan...
View ArticleRE: DRV8301 - SPI Register Report "FAULT"
Hi Raymundo,I have a question about your first answer. You say when FAULT bit in status register 1 is set, this could be due to an overcurrent through the FETs, but any of FET overcurrent bits (D0…D5)...
View ArticleDRV10983: Lock 2 on startup
Part Number: DRV10983Hi,We are driving a small BDCM with an impeller. Normal operation is fine, but occasionally we get false starts where the motor rotates at low speed and lock2 comes on. This...
View ArticleRE: WEBENCH® Tools/DRV8801: quiescent current in sleep mode vs. nFault Output...
Hi Kai, Please see the post: e2e.ti.com/.../1718078 When the device enters sleep mode, the nFAULT output is unpredictable. Section 9.3.8 of the datasheet also states this. To work around this, it is...
View ArticleWEBENCH® Tools/DRV8801: quiescent current in sleep mode vs. nFault Output state
Part Number: DRV8801Tool/software: WEBENCH® Design ToolsHi Team, we use the DRV8801 to drive a DC motor.Implementation according to datasheet “DRV8801” (SLVS855J –JULY 2008–REVISED MARCH 2015) page 16....
View ArticleRE: DRV8305: DRV8305 Gate Driver Not Pulling Low
Hi Eray, Assuming this image is a high side FET and the low side FET is off, this behavior could be expected. Are you looking at the gate of a high side FET? What is the gate of the corresponding low...
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DRV8305: DRV8305 Gate Driver Not Pulling Low
Part Number: DRV8305Hello,I am using DRV8305 motor driver and CSD18540Q5B MOSFETs in a design. When driving with a not %100 duty cycle, gate voltages of FETs (also Phase voltages) not staying low...
View ArticleRE: DRV103: Proportional Solenoid Valve + Arduino
Hi Judah,Figure 18 in the DRV103 datasheet provides a linear valve driver circuit using a DAC to control the Duty Cycle Adjust pin. The duty cycle would be adjusted to produce a PWM train that has an...
View ArticleDRV103: Proportional Solenoid Valve + Arduino
Part Number: DRV103Hello,I have a proportional solenoid (PVQ31) 24V valve for a project. I thought of using Arduino to drive this valve but the issue is - this valve needs a range of current supply...
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