Recommend Wi-Fi SoC with Very Low power Consumption?

[vishal]

Hello Sir,

I have developed my application using nRF52832 chip with BLE connectivity. My device is battery operated and hence i am looking for WiFi chip with small size and very low power consumption also low cost. Is it have any other WiFi based SoC in Nordic product. If not please sir recommend me other vendor WiFi SoCs is compatible with nRF52832. Actually i know this WiFI-Solution and ESP8266. If nordic have WiFi chip is good for me. Because i need to connect my device with server directly. Please sir recommend me list of WiFi based solution chip.

Thanks,

[bjorn-spockeli]

Hi Vishal,

I am afraid that Nordic Semiconductor does not have any WiFi ICs in our product portfolio.

Most WiFi modules communicate with a host MCU through SPI, which is supported by the nRF52832, so most of the WiFi modules will be compatible with the nRF52832.

Note that WiFi will never be low power, looking at the ESP8266 you suggested,
sending data with the ESP8266 is going to be in the 120-170mA range, see this page, which is over 20 times higher than that of the nRF52832. Most of the other WiFi chips on the market have similar current consumption figures.

My suggestion would be to figure out the following:

• what kind of battery you're going to be using?
• what kind of battery life your aiming for?
• how often you're going to communicate using WiFi?

and based on those answers you should be able to find out how what the maximum current consumption the WiFi chip in your product can have.

Best regards

Bjørn

[vishal]

1. We will use high energy capacity battery near about 2500-3000mA coin cell. I am also looking this kind of battery or higher energy capacity but in coin cell type.
2. Battery life at list >= 1 Year.
3. My device is communicate using WiFi in daily every 1hr. Means in one day it will connect 24 times, sensor measure data and sent to server. For 1 Wi-Fi connection sent data size is approx 150-180KB after that it will Sleep mode. So sir we are looking ultra low power WiFi with match above requirements. Please recommend me WiFi based SoC. Thanks for your reply.

[bjorn-spockeli]

As stated in my answer above, Nordic Semiconductor does not make any WiFi SoCs, so I do not have any WiFi SoC to recommended.

The ESP8266 that you've suggested appears to be a decent choice. On the page I linked to you find the formula to calculate the current consumption of the ESP8266 in deep sleep mode, waking up every n seconds.

[vishal]

Thanks for your reply, Can you recommend me Wi-Fi SoC of other vendor it will ultra low power consumption instead of ESP8266.

[bjorn-spockeli]

This module from Zentri has small form-factor and a pretty low current consumption in active transmit @ 0dBM as well as very low deep sleep current. It has a UART interface, so its compatible with the nRF52832.