Yingjixin-IP2315 Evaluation Board (OEM)

Yingjixin-IP2315 evaluation board

A single lithium charging module

Adjustable current and voltage, equipped with indicator light

2021_8_25: Ailishi used the newly learned ESP Arduino to complete the preparation of the IP2315 IIC library using the evaluation board provided by our company.

You can use this library to quickly set the current limit and other operations. For IP2315 that has not been customized, the resistor setting current limit will generally not take effect, and the chip will still try to charge at maximum power.

You can enter the group 232586710 to obtain this library file, or you can download and use it in the attachment column below. However, the attachment column is not necessarily the latest version. As of the update of this text, only the initial version has been released.

The algorithm may still need improvement, the available functions included in the library have been verified

Excerpted from the information book:

Features
 Input voltage range 5V~12V
 Maximum battery charging current 4.8A@9V/2A Input
 Output battery voltage VSET pin can be set
(4.2V/4.35V/4.4V/4.5V)
 Charging current ISET pin can be Assume (set the input current)
 Power MOS integrated built-in
 High efficiency synchronous buck charging:
94%, VIN=5V, BAT=3.7V, IBAT=4A
93.5%, VIN=9V, BAT=3.7V, IBAT=4A
93%, VIN=12V, BAT=3.7V, IBAT=4A
 Support Type-C PD input fast charging protocol
 Support Huawei FCP, Samsung AFC, MTK PE+1.1/2.0
input fast charging protocol
 Support small current adapter, auto Adaptable to adjust the charging current
 Support charging 1~2 LED status indication, intelligent identification of
the number of LED lights
 Support charging NTC temperature protection
 Support input overvoltage protection, IC overtemperature protection
 Support I2C interface
 ESD 4KV
 Package 5 mm × 5 mm 0.5pitch QFN32

2021.6.25 test message:

This triggers Huawei FCP’s 18W fast charging, and the charging efficiency is generally above 90

Efficiency and heat generation are okay, but the problem is that the current limit is useless.