Sign Up to our social questions and Answers Engine to ask questions, answer people's questions, and connect with other people.
Login to our social questions & Answers Engine to ask questions answer people's questions & connect with other people.
Volt.Tech
Lost your password? Please enter your email address. You will receive a link and will create a new password via email.
Please briefly explain why you feel this question should be reported.
Please briefly explain why you feel this answer should be reported.
Please briefly explain why you feel this user should be reported.
Hello,I want to purchase a wireless charging IC like STWBC86JR, but the data sheet says that it should be within the average frequency of 110kHZ to 205kHZ, so can not I apply it with a resonant frequency of 13.56 MHz? ...Read more
Hello all,I’m designing a board equipped with ESP32- S3SOC.Wireless function (WiFi & Bluetooth) isn’t used.Is it possible to operate with the built-in PLL without an external oscillator?However, I would like to know the frequence delicacy of the built-in PLL when ...Read more
Hello,I’m working with E2studio 2023-10 (23.10.0) Build Id: R20231006-1456. with FSP 5.0.0In my project, I have FreeRTOS with some Threads.In one of these threads, in the header file, I put some declarations of my functions. I think that the correct line to ...Read more
Hello Kendallsmith, Thanks for reaching out Volt Tech Community! Is the header file that you tried to add your code, located on the ra_gen folder? Still, you can not add code, because the files in this folder are auto-generated, If yes. However, please add it inside the src folder, which has been crRead more
Hello Kendallsmith,
Thanks for reaching out Volt Tech Community!
Is the header file that you tried to add your code, located on the ra_gen folder?
Still, you can not add code, because the files in this folder are auto-generated, If yes.
However, please add it inside the src folder, which has been created for the user’s code, If you want to add code.
Hope it helps!
Regards,
Julian White
Hi, I’m using IGBT to control PMSM， for example, if the normal voltage of PMSM is 600V, and the current is 300A, How do I choose the IGBT category according to current and voltage? Thanks and regards! Sachin Sharma
Hello, You choose an IGBT with abs maximum voltage of about 20 advanced than the expected collector-emitter voltage at the worst condition (you count your topology, switching voltage spikes, inputover-voltage). You choose the IGBT current rate according to Tj and power dispersion. Abs maximum currenRead more
Hello,
You choose an IGBT with abs maximum voltage of about 20 advanced than the expected collector-emitter voltage at the worst condition (you count your topology, switching voltage spikes, inputover-voltage). You choose the IGBT current rate according to Tj and power dispersion. Abs maximum current drops at advanced temperatures. So choose proper cooling, it might be you need to parallel devices to achieve advanced current. You also have to consider peak current so that it would survive.
Keep in mind there are numerous other parameters you have to consider, for example, dynamic characteristics, ability to operate at short circuits (10us specified generally), and so on.
Thank You
See lessHello,I would thankful for some clarity on the expected bit order when writing to the configuration register of the LED1642GW.Whilst it’s easily proved that CFG 0 is the LSB, and CFG- 15 is the MSB of the serialized word, it ...Read more
Hello, Yes, it would be Big Endian for all those registers. Thank You Nidhi Singh
Hello,
Yes, it would be Big Endian for all those registers.
Thank You
Nidhi Singh
Hello,I am currently working on a design that involves data logging and saving on a micro SD card using a Fire beetle using an ESP32 WROOM 32D. We presently have it working but I just realized a system of ...Read more
Hello, TinyUSB needs USB-OTG, and at the time of writing this comment only the ESP32-S2 and -S3 have that. You can add USB OTG by means of a USB to the Serial bridge chip, which is the CH340. Thank You Vikas Nagpal
Hello,
TinyUSB needs USB-OTG, and at the time of writing this comment only the ESP32-S2 and -S3 have that.
You can add USB OTG by means of a USB to the Serial bridge chip, which is the CH340.
Thank You
Vikas Nagpal
See lessHi, I make a design for simple Turn on the LED and off the LED. If i choose Subclock populated option to the populated the design isn’t debugging. If i choose Subclock populated option to the non populated also the design is debugged. is there any ...Read more
Hello, Thanks for reaching out to the Volt Tech Community! However, the error occurs because the code is checking for a sub-clock, If you apply your customized board and you do not have a sub-clock connected to your board. So, yes the answer to this is to set the' Subclock Populated' value to' Not pRead more
Hello,
Thanks for reaching out to the Volt Tech Community!
However, the error occurs because the code is checking for a sub-clock, If you apply your customized board and you do not have a sub-clock connected to your board.
So, yes the answer to this is to set the’ Subclock Populated’ value to’ Not populated’.
Regards,
Ashish
See lessDear Team,I understand the System reset is turned on when SRSTN is set low.I would like to know the details of the System reset function.After the System reset,is the Firmware renewed from the first step?Can IO status be reset?are all ...Read more
Hi, HIB_REG_ON_IN is applied by the hibernation block to power up or power down the internal CYW43907 controllers. For applications that use the hibernation block, HIB_REG_ON_OUT must connect to REG_ON. Also, when de-asserted, this pin holds the WLAN and APP sections in reset. SRSTn- System reset. TRead more
Hi,
HIB_REG_ON_IN is applied by the hibernation block to power up or power down the internal CYW43907 controllers. For applications that use the hibernation block, HIB_REG_ON_OUT must connect to REG_ON. Also, when de-asserted, this pin holds the WLAN and APP sections in reset.
SRSTn- System reset. This active-low signal resets the backplanes.
Yes, After reset FW is also reloaded
Thanks,
Sachin Sharma
See lessHello!I’ve two components (in the SMB package probably).The markings are1) ME G3 202 (no polarity stripe on the package)2) EE G3 223 (with polarity stripe)Can you assist me decode what these elements may be what may be the difference between ...Read more
Welcome @kamalaswal, to the community! ME = SM6T18CA (bidirectional)EE = SM6T18A (unidirectional, equal datasheet) The unidirectional TVS has a unique polarity, which is why its cathode is labeled with a dash/bar. The bi-directional one is electrically symmetrical and can be installed with any polarRead more
Welcome kamalaswal, to the community!
ME = SM6T18CA (bidirectional)
EE = SM6T18A (unidirectional, equal datasheet)
The unidirectional TVS has a unique polarity, which is why its cathode is labeled with a dash/bar. The bi-directional one is electrically symmetrical and can be installed with any polarity.
Hope that helps.
Regards
Alex Thomas
See lessHello, I am trying to put together a design with WROVER and LAN8720A. Based on existing designs similar as the one with WROOM and LAN8720A, GPIO17 is applied as EMAC_CLK_OUT. I wonder if there are any alternate pins for EMAC_CLK_OUT. Since ...Read more
Hello, I did this numerous years ago, so I'm still determining what has been modified in the software. But back also you could configure to use GPIO0 as the CLK.The problem with this was that it didn't allow uploading the firmware automatically. You had to manually keep GPIO0 low and reset it to putRead more
Hello,
I did this numerous years ago, so I’m still determining what has been modified in the software. But back also you could configure to use GPIO0 as the CLK.
The problem with this was that it didn’t allow uploading the firmware automatically. You had to manually keep GPIO0 low and reset it to put it in bootloader mode for downloading. I wouldn’t say I liked this approach so I did it this way rather.
I do not use that design presently, mostly because I only use the ESP32- S3, and there’s no stock of the LAN8720A. When I need Ethernet I use the KSZ8851SNL Ethernet Controller. Works great.
Thank You
See less
Welcome @audrawells, to the community! The STWBC86 is a Qi power transmitter, i.e. it's set to the frequency range100.205 kHz defined in the Qi standard. There's presently no similar power transmitter available for 13.56 MHz, but there are possibilities to transfer and to do wireless charging with NRead more
Welcome audra wells, to the community!
See lessThe STWBC86 is a Qi power transmitter, i.e. it’s set to the frequency range100.205 kHz defined in the Qi standard.
There’s presently no similar power transmitter available for 13.56 MHz, but there are possibilities to transfer and to do wireless charging with NFC.
Does it answer your question?
Regards
Alex Thomas