Hi Shivali Sir , I am working Renesas MCU R5F1027ANA (RL78/G12), I am facing the reset problems regularly in my code, please help me to resolve this problems. Regards Raja Singh Livguard
Hi, Regarding your issue release heap memory.
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Hi Shivali Sir , I am working Renesas MCU R5F1027ANA (RL78/G12), I am facing the reset problems regularly in my code, please help me to resolve this problems. Regards Raja Singh Livguard
In ESP32WROOM32D using FTP API to download and upload files. While downloading the file from FTP server “wifi:bcn timeout,ap_probe_send_start” is coming.
We are using one DOB BP5151DK in our spot light ,but it is pass 2.2kv surge and we are looking 3 kV, please suggest any solution for this.
Hi , Please use 2 fuses with Line and Natural for this device if you are using a product with low wattage, such as 2 or 3 watts, as it will otherwise pass 4KV and 440 Volt with just one MOV and Fuse. Thanks
Hi ,
Please use 2 fuses with Line and Natural for this device if you are using a product with low wattage, such as 2 or 3 watts, as it will otherwise pass 4KV and 440 Volt with just one MOV and Fuse.
Thanks
We are making 10 watt flood light with sic IC and we are facing issue with 4kv and 440volt because if we use mov 561 then surge pass 4kv and high voltage pass only 400volt and if we use mov ...Read more
Hi , There is only issue with MOV tolerance if you use less tolerance mov or High Surge MOV your issue will be solve Thanks sandeep
Hi ,
There is only issue with MOV tolerance if you use less tolerance mov or High Surge MOV your issue will be solve
Thanks
sandeep
See lessWhat parameters need to check for the selection of Power MOSFET in the Power supply?
RDS(ON) parameters RDS(ON) means “resistance between drain and source in conduction.” MOSFETs are generally used as a better alternative to power transistors and are used for high-current–switching applications. If this parameter is lower, it means that the MOSFET loses less energy, according to OhmRead more
RDS(ON) parameters
RDS(ON) means “resistance between drain and source in conduction.” MOSFETs are generally used as a better alternative to power transistors and are used for high-current–switching applications. If this parameter is lower, it means that the MOSFET loses less energy, according to Ohm’s law, and results in higher energy efficiency and produces less heat. The designer should choose a component model with the lowest possible RDS(ON) value. when the MOSFET is conducted, the RDS(ON) can be calculated with the formula: RDS(ON) = V(DS) / I(D)
Input (Ciss) and output (Coss) capacitance parameters
The “gate,” the oxide layer, and the relative connection on the MOSFET body works, in effect, like a small capacitor. As soon as the “gate” is subjected to a voltage, this virtual capacitor begins to charge. Charging takes time, and therefore, there is a delay in the on state. The designer should choose a MOSFET with the lowest possible input capacitance to avoid long delays. If using a MOSFET with a direct connection to an MCU output pin, the “gate” should be connected via an external resistor to prevent unwanted results. Regarding the SiC model used, its capacitive parameters are as follows:
Input capacitance (Ciss): At VDS = 100 V, VGS = 0 V, F = 100 kHz — 1,500 pF
Output capacitance (Ciss): At VDS = 100 V, VGS = 0 V, F = 100 kHz — 104 pF
Parameters related to switching speed
MOSFETs are particularly suitable for fast-switching applications. The higher the frequency, the smaller the transformers must be, but the transmitted noise increases. In parameters that link the component to the switching speed are as follows:
Turn-on delay time (tdon): 25 ns
Rise time (tr): 14 ns
Turn-off delay time (tdoff): 54 ns
Fall time (tf): 11 ns
Hi, LoRa defines a specific set of data rates, but there are multiple options for the end chip or PHY. SX1272 supports data rates from 0.3 to 37.5kbps, SX1276 supports 0.018 to 37.5kbps.
Hi,
LoRa defines a specific set of data rates, but there are multiple options for the end chip or PHY. SX1272 supports data rates from 0.3 to 37.5kbps, SX1276 supports 0.018 to 37.5kbps.
See lessDear Mahendra sir. Please help how to select TVS diode for surge protection . How does it work ok surge
Umesh, Please find attached the file for the selection of the TVS diode. You will understand what parameters need to check & how it works to protect the device from surge spike.
Umesh,
Please find attached the file for the selection of the TVS diode. You will understand what parameters need to check & how it works to protect the device from surge spike.
See lessDo you see the note on page 20 of the Hardware User's Manual? It says clearly that PIOR has to be used to change the function to TxD0/RxD0.
Do you see the note on page 20 of the Hardware User’s Manual?
It says clearly that PIOR has to be used to change the function to TxD0/RxD0.
See lessNo. Internal flash still occupies some GPIOs.
No. Internal flash still occupies some GPIOs.
See lessWhat is the drive current requirement of the pin nRESET (Control signal) in the PMIC?
Thank You Shivali Sir. Problems Resolved Now. Regards Raja
Thank You Shivali Sir.
Problems Resolved Now.
Regards
Raja