Help me find the suitable motor driver for BLDC servo application
Hi Everyone,I am looking for a motor driver IC to control a 1A 24 V BLDC motor (control input - Analog/PWM). I have couple of questions;1. Does TI have any motor driver IC which provides Sinusoidal...
View ArticleRE: DRV8332 FAULT timing?
Hi Rich, The OC Event will be happening in one of the three Outputs (A,B, or C) and should show a spike in current, followed by the analog OCP limiter kicking in for the OCP time internval, followed by...
View ArticleDRV8332 FAULT timing?
In OC latching mode, what is the time delay between the sensing of the OC event and the Fault pin driven low?
View ArticleRE: DRV8824 1M-ohm resistor at Charge pump
Shimizu-san, This resistor should be placed to discharge the charge pump during low-power sleep mode or when the device is powered down. Not including it could cause the charge pump to stay charged and...
View ArticleRE: DRV8301 GVDD
(We've got the components soldered on but aren't getting any voltages out of GVDD, AVDD or DVDD. We're pretty certain our solder connections are sound.)
View ArticleRE: DRV8301 GVDD
Hi Angela, The bypass capacitors for DVDD, AVDD, and GVDD should be populated and the nFAULT / OCTW pins should be pulled high. CP1 / CP2 capacitor should also be populated. GVDD can then be measured...
View ArticleRE: DRV8301 GVDD
Thanks for the quick response. One more question: Do AVDD and GVDD require nFAULT and OCTW pulled high?
View ArticleRE: DRV8301 GVDD
Hi Angela, I recommend populating the pull-up resistors because it will make any potential debug easier. When you bring EN_GATE high if there is an issue with the GVDD regulator (or any other fault...
View ArticleRE: DRV8301 GVDD
We would like to know if it is required to pull up OCTW and nFAULT in order to see voltages at AVDD and DVDD?
View ArticleDRV8301 GVDD
We're testing the DRV8301 for GVDD output with only the components associated with that block soldered on. What are the minimum requirements for getting voltage from GVDD?
View ArticleRE: DRV8842 nFault Status
Hi Kevin, What is the VM Voltage you're supplying to the device? Are you seeing the nFAULT pin driven low during your testing?
View ArticleRE: DRV8842 nFault Status
Hi Phil, Thank you for your prompt response. I am using 12V rail. The nFAULT pin is low during the test. The temperature of the chip is around 55°C, so I think it's not a thermal problem. Kevin
View ArticleRE: DRV8842 nFault Status
Hi Kevin, Thanks for the information. Are you able to measure the output current going to the TEC with a current probe? The OCP on the device has a tblank time associated with it that the driver will...
View ArticleRE: DRV8824 1M-ohm resistor at Charge pump
Hi, Thank you for your reply. Is DRV8824 broken by this discharge current? Best regards, Shimizu
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DRV8824 1M-ohm resistor at Charge pump
Hi,Could you tell me the mean of 1M-ohm resistor at Charge pump, please? This is below picture. If user does not have this resistor, what will happen? Must we have this resistor? Best regards,Shimizu
View ArticleRE: DRV8842 nFault Status
Hi Phil,Thank you for your response. For current, I can directly see the current output from the power supply. That's why I can read 0.45A and 2.4A for each driver bank. If I understand OCP correctly,...
View ArticleDRV8842 nFault Status
Hello,I am working on a PWM TEC driver circuit, DRV8842 meets all the requirements of the circuit, but I also found one issue. First of all, I set I4:0 to 11011, set VREF = 3.3V and Rsense =...
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