DRV8844: As Bipolar Stepper Motor Driver
Part Number: DRV8844Hi TI Motor Team:I am using DRV8844 as a bipolar stepper driver to do a motor load test by combining the quad half bridges(IN 1-2 & IN 3-4) in two pairs.Unfortunately my test so...
View ArticleRE: DRV8701: DVDD IN SLEEP MODE
Hi Rick,I had already thought the same, but a 100K resistor made no difference. Do you have a DRV8701EVM board that you could try this on?ThanksJohn
View ArticleRE: DRV8701: DVDD IN SLEEP MODE
Hi John, I do, but I will not be able to get to this until next week. Can you provide a quick schematic of the modifications? If I think of something, I will let you know.
View ArticleRE: DRV3201-Q1: Table 5. Erro Conditions and Protective Actions
Hi Tsuji-san,1. No, the error pin is not pulled up to VDDIO internally2. The ERR pin is pulled low if any of the pairs has a violation detectedRegarding "What is the failure threshold of ERR pin?"...
View ArticleDRV3201-Q1: Table 5. Erro Conditions and Protective Actions
Part Number: DRV3201-Q1Hi team,I have 4 questions below from the datasheet Table 5. Error Conditions and Protective Actions.The purpose of the question is for a failure analysis.1. Does ERR pin...
View ArticleRE: DRV8701: DVDD IN SLEEP MODE
I can check tomorrow Rick. I also have an unmodified EVM running via USB on the GUI, and I think that does the same, but I will double check in the morning
View ArticleRE: DRV3201-Q1: CS amplifier Gain Drift and Shift Buffer Offset Drift
Hi Ushikubo-san, We're looking into this now and it may take a few days. I will follow up once we have some info that we can share. Regards, Will Toth
View ArticleRE: DRV8301: SPI read shows all 1s
SPI output is coming from the 28069 board. I checked it. But even after writing the values to control registers of DRV8301, all that is received back is 1s.
View ArticleDRV8301: SPI read shows all 1s
Part Number: DRV8301I am trying to intialise DRV8301 from TMS320F28069 board. I tried initialising one control register by writing to SPITXBUF register after the SPI initialisation. When trying to read...
View ArticleRE: DRV8301/2 shoot through protection
Hello. I'm working on a problematic project with high emi, (fast switching of very high current)So i'm wondering how fast is your driver in shoot through protection.Is it instantainous? What happens...
View ArticleDRV8301/2 shoot through protection
Hello!I am interested in using the DRV8301 or DRV8302 for a 48V/60A brushless motor driver but I am not sure about the shoot through pretection of the device.I would like to know how the shoot through...
View ArticleRE: DRV3201-Q1: Table 5. Erro Conditions and Protective Actions
Hi Will, Thank you. I meant combination of shoot through failures which pull ERR=Low. I understand that any pairs of inputs violate shoot through trigger ERR. Regarding to 3-2, even if the device...
View ArticleRE: DRV110: Could you tell me about "How to use Motor Drivers"
Thank you very much for your answer. I will do my best for Design-In. If you need support of the circuit, we will send you customer circuit information etc. Best regards, Masumi Sekiguchi
View ArticleRE: DRV3201-Q1: CS amplifier Gain Drift and Shift Buffer Offset Drift
Hello Will-san, Thank you for your reply. Please let me known once you have some information. Best Regards.
View ArticleDRV10975EVM: GUI of DRV10975EVM
Part Number: DRV10975EVMDear, AllCustomers are evaluating using DRV10975EVM.It was found that there is some error in the speed calculated using FG and the speed displayed by the GUI.Therefore, please...
View ArticleRE: DRV8844: As Bipolar Stepper Motor Driver
Hi Luis: These are the various measurements I got on the new circuit: Sense Resistor SRC34 - 0.83 Amps; 5V (across 2 ohm resistor) SRC12 - 0.0 Amps; 0V (across 2 ohm resistor) Load OUT1 - OUT4 : 0.86...
View ArticleRE: DRV8305: the mean of Total voltage drop from PVDD to SH_X pins
Hi Yamamoto-san, We will investigate and reply soon.
View ArticleDRV8305: the mean of Total voltage drop from PVDD to SH_X pins
Part Number: DRV8305Dear all,Could you teach me the mean of Total voltage drop from PVDD to SH_X pins?What should I pay attention to from this specification?Best regards,
View ArticleRE: DRV8844: As Bipolar Stepper Motor Driver
Hi Rav, Does your circuit look like the functional block diagram shown in the datasheet (section 7.2) with the optional current sense resistors? The sense resistors should be less than 200mOhm to...
View ArticleRE: DRV8825 + NXP PCA9629
Hi Rick,For a new project we are starting for a customer of us we are also thinking of a combination of a PCA9629 and a DRV8833 as suggested here.For this new project we have to control a maximum of...
View Article