DRV8833C: Distribution data of Vtrip
Part Number: DRV8833CDear Support team, I asked the distribution data of VTRIP and Min/Max value of tOFF in my previous E2E...
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DRV8301: DRV8301 heats up a lot if buck is enabled
Part Number: DRV8301Hi all, I have been working on DRV8301 for more than 2 weeks now but I'm coming across a problem every time I try anything with the reference design given in figure 7 in datasheet....
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DRV8301: DRV8301 PWM not working
Part Number: DRV8301Hi all, I have been working on DRV8301 reference design given in figure 7 of datasheet. I have developed circuitry as show in the design and I have disabled buck...
View ArticleRE: Full Bridge Driver for a 100 V DC motor
Hi John, I may have placed it in the wrong forum, but I was thinking the 3x LM5107 may work. At this time, there are no 100V drivers available.
View ArticleRE: DRV8301: DRV8301 heats up a lot if buck is enabled
Hi Phil, Thank you very much for your reply, I'm using Arduino mega 2560 as a microcontroller and using VCC pins on the board to provide VCC across peripherals of DRV8301. When inductor is connected...
View ArticleRE: Full Bridge Driver for a 100 V DC motor
Hi Marc,I work with the high-power driver solutions team in TI's high-voltage business. We offer many 100V half-bridge drivers, which many customers use for driving MOSFETs in motor drive applications....
View ArticleFull Bridge Driver for a 100 V DC motor
Hi Guys,I need to control a 100V DC motor. I don't see any MOSFET driver for 100V. What are you suggesting?
View ArticleRE: DRV8842 voltage spikes during switching
Hi Chris, You may be able to find some type of TVS, zener, or transistor circuit that can clamp the voltage and allow you to reduce the capacitor size.
View ArticleDRV8842 voltage spikes during switching
Hello,We are using the DRV8842 bridge driver for switching a large inductor in a magnetics clamping application (inductor around a permanent magnet). With 2 control signals we can set the inductor...
View ArticleRE: DRV8870: Periodic Sleep Mode / Max Output Capacitance
Hi Keith, 1. Expect to put motor driver in Hi-Z state on a periodic basis, +10Hz or higher rate, which will place DRV8870 into sleep mode. Are there any concerns in using the DRV8870 where it...
View ArticleDRV8870: Periodic Sleep Mode / Max Output Capacitance
Part Number: DRV8870Hello,I have a few questions regarding the DRV8870 driving a 24V motor.1. Expect to put motor driver in Hi-Z state on a periodic basis, +10Hz or higher rate, which will place...
View ArticleRE: DRV8302
yes,placement of the mosfets changes.On the PCB all the mosfets are in a line (side by side) while on the breadboard 3 high side mosfets are in a line and 3 low side mosfets are in a other line (Faces...
View ArticleRE: DRV8711: External FET gate pulldown resistor
Hi Phil, Yes, there is circuitry to prevent the FETs from turning on if the driver is off.
View ArticleDRV8711: External FET gate pulldown resistor
Part Number: DRV8711Does the DRV8711 have pulldown resistors on the AxHS & AxLS pins to prevent FET's from accidentally turning on if the driver is off?
View ArticleRE: DRV8302
Hi Akash, At 55V, there could be voltage spikes on PVDD that exceed the absolute maximum ratings of the device. Please examine the voltage spikes at 24V when operating. This can be used as an indicator...
View ArticleRE: DRV8301: DRV8301 PWM not working
Hi Suraj, Have you tried connected MOSFETs and run this test? What is the state of the FAULT pin while you perform this test?
View ArticleRE: DRV8305: DRV8305 nFAULT Low
Hello Phil,Thank you for the advice. I believe removing R1000 removed the fault. Now nFAULT is high (good!). Now in between the bridges is approximately 10V.However when I try to drive the MOSFETs by...
View ArticleRE: DRV8301: DRV8301 PWM not working
Hi Phil, Fault pin has voltage = 2.3V and I have not tried connecting MOSFETs to the DRV8301. Is this happening because there is no feedback from MOSFET circuitry?
View ArticleRE: DRV8302
At 24V spikes of 5V occur at SH_X pins (means 39V with respect to GND) without connecting the motor.At 55V spikes of approx 6V occur at SH_X pins (means 61V with respect to GND) without connecting the...
View ArticleRE: DRV8305: Some problem while driving BLDC motor using DRV8305 and...
Hi Dinesh, Have you examined the hall pins when the disturbance occurs? This should help you determine if the disturbance is due to incorrect hall information or an incorrect commutation sequence. If...
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