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Xinyuan-LilyGO / T-SIM7600X

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the power consumption of Tsim7600G-H boards #39

Open Mariem114114 opened 1 year ago

Mariem114114 commented 1 year ago

Hello, @LilyGO @lewisxhe

I am testing the deep sleep mode using the same code on two different but identical Tsim7600G-H boards. However, the power consumption of the two boards is different (one is 0.967mA and the other is 4.778mA) even though I have made the same connections and used the same code. Is this normal and where could this error come from?

lewisxhe commented 1 year ago

Normally, it is below 1mA 4.7mA is a bit too much. Are you measuring the power supply from the battery?

Mariem114114 commented 1 year ago

Hello, @lewisxhe

Thank you for your response. No, I am currently powering the card using an external power supply and measuring its consumption using an ammeter. What's strange is that I'm using the same code and wiring for both cards, but they're not consuming power in the same way. Could the problem be with the card? If not, is there a minimum value for consumption that can be reached with the T-SIM7600G-H card? Otherwise, my power consumption when using MQTT and the SIM is 190mA, which seems high to me. How can I reduce this consumption? I'm considering adding external timers.

Thank you.

lewisxhe commented 1 year ago

The average operating time of the SIM7600 is about 150mA, which is normal when used with the ESP 32 at 190mA Turn off the power supply of the modem when it is not in use, control PWRKEY (io4), or use the AT command to shut down the modem. Because the boost controller of this board does not have separate control, after turning off the modem, DCDC conversion will also consume a portion of the current

Mariem114114 commented 1 year ago

Hello again @LilyGO @lewisxhe ! Thank you for your question. I'm using MQTT for transmission and it lasts for 13 seconds, which is not normal and significantly increases power consumption. Do you have a solution to this problem?

lewisxhe commented 1 year ago

There are many factors that affect the power consumption of SIM7600. In a weak signal situation or when searching and waiting to connect to the network, the 7600 will consume a very large current, 100ma+ This is in the case of a normal connection, I hope it will help you