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12V 10A UPS ESP32+INA3221

Overview

Based on CN3306 boost charging, TPS40057 12v 10A output ups system
QQ discussion group: 483012638

has been successfully cloned and verified by friends
! [hiIRERDqzo2C7ZYKoxGDk9mvT9CJyE1BZ0vYJB9K.jpg]

![f8ADMa02fbksSZSG2vYfffDDmuELHzrkOyGZpGyO.j pg]

Main power supply 12v, using LTC4412 ideal diode for power path management, using The 4 strings of lithium batteries are boosted and charged by CN3306. The discharge part uses KIC1210, 40V input, and the 10A output comes with a heat sink. The actual test is 135W stable operation. The

4 strings of lithium battery protection circuit uses BM3451

power supply monitoring. The output part is changed from the previous version INA226 to INA3221. Three channels of voltage and current monitoring, 12v input current monitoring, battery current output monitoring and 12v output current monitoring.

One channel is always open, and one channel of controllable output

adds a small screen to display the current information .

When the power is cut off and restored, an email prompt is sent by esp32

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![utilRequest (1).jpg]

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Design Files

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