When POE cable is plugged in, it charges for the first time but it becomes impossible to charge soon. I think that the POE side circuit is a problem because I operate normally when only 5V is applied to the charge IC.
Since it is confirmed that 5V is output from the output terminal, it is not a voltage problem.
I attach the schematic that I composed with PDF.
Please make sure that there is something strange in my circuit.
Hi guys, I'm new in this forum and with Silicon Labs products. It is good to explore this company.
I'm interested in using the SI8661AB-B-IS1, and basically what I need is to convert logic levels from 0, 3.3V to -2.5V, 2.5V. graphically explained I need to do the connection I show in the figure below. Is it fine? can I use this IC in this way?
Hi guys, I'm new in this forum and with Silicon Labs products. It is good to explore this company.
I'm interested in using the SI8661AB-B-IS1, and basically what I need is to convert logic levels from 0, 3.3V to -2.5V, 2.5V. graphically explained I need to do the connection I show in the figure below. Is it fine? can I use this IC in this way?
I created a design for a simple MOSFET driver using the Si8261BCC-IS. The schematic and Gerber files are available here: https://drive.google.com/file/d/1OrVLv4VfJS-6A83AF7Kemexxz-GgUZdO/view?usp=sharing
When I connect the input control signal, the chip blows up. There is proper smoke and stuff. The supply voltage on the MOSFET side is 24V. Why would this be happening?
I am using the Si Si834x-EVB Board to do the evaluation. I can write the data into Si83408ADA and enable the B1 of the channel, but I can't read any diagnosis information back as below picture.
The MISO is a tristate pin, so I use a 10K pull-up resistor and I try to visit different register addresses, but also not useful.
According to Si838x datasheet, section 3.4.1, page 7:
"To enhance the robustness of a design, the user may also include resistors (50–300 Ω) in series with the outputs if the system is excessively noisy."
My application is a PLC, so customers can use the PLC in noisiest environments.
Because high-energy pulses are filtered by device "optocoupler", my question: Is really necessary the series resistors on output side?. What is the purpose?. Avoid EMI or meet EMC?. Could you explain why?.
I'm using the parallel device, but, this is apply to serial devices with SPI also?.
The SI8441-C-IS looks discontinued already，it's hard to buy from the market. But, replace it with SI8441BB-C-IS,not works. So, how to choose the replacement of SI8441-C-IS?
I just wanted to know whether both output channel of Si8273/4/5 are isolated from each other if we provide isolated power supply to each of (VDDA-VSSA) and (VDDB-VSSA)?
For example, can we use Si8273/4/5 to drive two switches of "two-switch forward converter"?
Master transmit 0xAA command frequently. Si8900 have to reply 0x55 command for successful communication establish. But i have not received 0x55 value . Si8900 replies 0xAB and 0x02 frequently. i have tried with 9600 baud rate to maximum baud rate value with serial Emulator. Kindly support us for establish the successful communication. i have attached the excel sheet with the sample data's which we received for your reference.
Forum
Question about si3402
Hello,
I am using the SI3402 chip to use POE.
But it does not work properly.
The circuit I have constructed is as follows.
POE: SI3402 (non-isolated)
Ethernet: W5500
Ethernet Transceiver: H2019NL
Charging: BQ25601
When POE cable is plugged in, it charges for the first time but it becomes impossible to charge soon. I think that the POE side circuit is a problem because I operate normally when only 5V is applied to the charge IC.
Since it is confirmed that 5V is output from the output terminal, it is not a voltage problem.
I attach the schematic that I composed with PDF.
Please make sure that there is something strange in my circuit.
Thank you.
using SI8661AB-B-IS1 to translate from 3.3V to 2.5V and -2.5V
Hi guys, I'm new in this forum and with Silicon Labs products. It is good to explore this company.
I'm interested in using the SI8661AB-B-IS1, and basically what I need is to convert logic levels from 0, 3.3V to -2.5V, 2.5V. graphically explained I need to do the connection I show in the figure below. Is it fine? can I use this IC in this way?
Thank you
using SI8661AB-B-IS1 to translate from 3.3V to 2.5V and -2.5V
Hi guys, I'm new in this forum and with Silicon Labs products. It is good to explore this company.
I'm interested in using the SI8661AB-B-IS1, and basically what I need is to convert logic levels from 0, 3.3V to -2.5V, 2.5V. graphically explained I need to do the connection I show in the figure below. Is it fine? can I use this IC in this way?
Thank you
Why would this design (Si8261BCC-IS) blow the chip?
Hi,
I created a design for a simple MOSFET driver using the Si8261BCC-IS. The schematic and Gerber files are available here: https://drive.google.com/file/d/1OrVLv4VfJS-6A83AF7Kemexxz-GgUZdO/view?usp=sharing
When I connect the input control signal, the chip blows up. There is proper smoke and stuff. The supply voltage on the MOSFET side is 24V. Why would this be happening?
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What is the antenna gain of a Thunderboard?
Hi,
What is the antenna gain of the antenna used in Thunderboard SLTB010A?.
What's the ESD HBM level of SI8400AB-B-ISR?
Hi,
What's the ESD HBM parameter of SI8400AB-B-ISR? Not found it on datasheet and quality report. Thanks.
SI3404 burned
Hi,
We are using the SI3404 chip to use POE, When we used the standard PoE injectors, it works perfectly.
But when we used the non-standard PoE injectors, the chip would burn out occasionally.
Our design is a reference of Si3404-Buck EVB board. Is the SI3404 not support the non-standard PoE injectors ?
Thank you for your Help.
Fail to read the Si83408ADA diagnose data back
Hello,
I am using the Si Si834x-EVB Board to do the evaluation. I can write the data into Si83408ADA and enable the B1 of the channel, but I can't read any diagnosis information back as below picture.
The MISO is a tristate pin, so I use a 10K pull-up resistor and I try to visit different register addresses, but also not useful.
Spice model for Si827x and Si823X
Hi all,
Is there anyone who has spice model for Si827x and Si823x series gate driver?
Serial resistor for ouput side (Si838x)
Hi,
According to Si838x datasheet, section 3.4.1, page 7:
"To enhance the robustness of a design, the user may also include resistors (50–300 Ω) in series with the outputs if the system is excessively noisy."
My application is a PLC, so customers can use the PLC in noisiest environments.
Because high-energy pulses are filtered by device "optocoupler", my question: Is really necessary the series resistors on output side?. What is the purpose?. Avoid EMI or meet EMC?. Could you explain why?.
I'm using the parallel device, but, this is apply to serial devices with SPI also?.
Thanks!.
SI8441-C-IS replacement
output channel isolation of Si8273GB-IS1 (or Si8273/4/5)
I just wanted to know whether both output channel of Si8273/4/5 are isolated from each other if we provide isolated power supply to each of (VDDA-VSSA) and (VDDB-VSSA)?
For example, can we use Si8273/4/5 to drive two switches of "two-switch forward converter"?
Regards,
Reg: Si8900 UART Auto baud rate detection not working
Hello Team,
I am using SI8900 ADC with UART communication.
Auto Baud rate process:-
Master transmit 0xAA command frequently. Si8900 have to reply 0x55 command for successful communication establish. But i have not received 0x55 value . Si8900 replies 0xAB and 0x02 frequently. i have tried with 9600 baud rate to maximum baud rate value with serial Emulator. Kindly support us for establish the successful communication. i have attached the excel sheet with the sample data's which we received for your reference.