Forum Post: RE: How these circuit diagrams in the datasheet was made?
Hello Goodarz, There have been many schematic capture systems used at TI over the years. Back in the 80's it was almost all done by hand. Schematic capture graphics is combined with text and edited...
View ArticleForum Post: RE: DRV2700EVM-HV500: output voltage ripple issues
Yes, at 0 and 500V setpoints the ripple is fairly low (about 1-2%). Unfortunately we need this behaviour in the full range 0-500V. I think we'll adopt another solution. Thanks for your help anyway!
View ArticleForum Post: RE: DRV2700EVM-HV500: output voltage ripple issues
You're welcome. Sorry that our design doesn't meet your needs and thanks for posting to our E2E forum.
View ArticleForum Post: RE: DRV2605L: Analog input/output
Hi Kelly-san, Thank you so much for your kind reply!! Best Regards,
View ArticleForum Post: RE: drv2605L problem driving ERM (overcurrent)
Thank you Kelly-san! I understood. Regards,
View ArticleForum Post: RE: RTOS/OPT3001: opt3001 latch mode sample code
Guys, anyone there to help??
View ArticleForum Post: RE: How these circuit diagrams in the datasheet was made?
Thanks Ed for your reply, Yes true, it seems to be an old schematic, but it was only a sample picture. Do you know what software is being used at the moment ? Since the schematics in the datasheets...
View ArticleForum Post: RE: How these circuit diagrams in the datasheet was made?
Goodarz, TI has been using ALTIUM for the past few years. Mentor and PCAD were used many years ago. But like I said, the schematics are sent to our Technical Publications team where it is then massaged...
View ArticleForum Post: RE: How these circuit diagrams in the datasheet was made?
Thank you very much Ed Goodarz
View ArticleForum Post: RE: How these circuit diagrams in the datasheet was made?
Hi goodarz, Just to add some additional commentary, the 'pretty schematics' found in some documentation are often created with an actual graphics program such as AutoCAD, Visio or Corel Designer. There...
View ArticleForum Post: DRV2625: Is Overdrive time programmable?
Part Number: DRV2625 Hi, Team Customer asked: Is the overdrive time programmable? If it was, what is the range and how to program it? Thank you.
View ArticleForum Post: RE: DRV2625: Is Overdrive time programmable?
Hi Dong, The overdrive (OD) is automatic, but it does have a programmable clamp time with a minimum of 25ms. This is in register 0x29. The automatic OD clamp algorithm is part of TI's patented...
View ArticleForum Post: DRV2605LEVM-MD: RMS value of rated voltage tested by oscilloscope...
Part Number: DRV2605LEVM-MD RMS value of rated voltage tested by oscilloscope is not equal to what I set. register is set as below: Rated voltage 0x16 0x36 (1.4V) Overdrive voltage 0x17 0x48 (1.6V)...
View ArticleForum Post: RE: DRV2625: Is Overdrive time programmable?
Hi Kelly May you explain that how DRV2625 judges LRA reaches the acceleration target? Thanks.
View ArticleForum Post: RE: DRV2625: Is Overdrive time programmable?
Thomas, From auto-calibiration we know the expected back-EMF signal from the LRA. We are tracking the back-EMF with our closed loop algorithm. As the back-EMF value approaches the target, we know that...
View ArticleForum Post: RE: DRV2605LEVM-MD: RMS value of rated voltage tested by...
Hi Thomas, Have you run the auto-calibration routine? Its important to calibrate to the LRA for accurate rated voltage. I noticed that the overdrive (OD) voltage is 1.6V. The OD voltage is in Vpeak and...
View ArticleForum Post: RE: DRV2625: Is Overdrive time programmable?
I want to add that the overdrive can be adjusted using register 0x1A. This is a signed number that can add or subtract time to the overdrive portion of the waveform. I recommend only using this for...
View ArticleForum Post: RE: DRV2605LEVM-MD: RMS value of rated voltage tested by...
Hi Kelly I follwed your suggestion and set overdrive voltage 0x5d, but output RMS value is 0.92Vrms. Is there any other setting I need to do ? Thanks.
View ArticleForum Post: RE: LM98725: SH1 output doesn't toggle during CCD readout. phiA,...
Hello, James. Do you have any ideas or update for me? I generated the clock with a 3.3V microcontroller.
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