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In this lesson, we will talk about the charging chips

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The picture shows a charging chip on the mainboard

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The charging chip converts a 5V voltage input from the charging cable

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into the main power supply in the mobile phone,

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and then converts the main power supply to the positive electrode of the battery for charging

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The charging chip is also responsible for detecting battery power,

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temperature, data and other information

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Let's look separately

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Like the Hisilicon platform and the MediaTek platform,

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they often use independent charging chips

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That is, the charging chip is installed independently,

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not in other chips

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Because the charging power is relatively large

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and the heat generation is also large,

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the charging chip is generally designed under the SIM card holder,

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there is a large inductor on the side

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Here is the SIM card holder,

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this is the charging chip,

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there is a large inductor on the side

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This is from Hisilicon

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It starts with Hi

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Its charging chip is under the SIM card holder

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There is a large inductor next to it

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In this way, we can basically judge the location of the charging chip by the appearance features

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The MediaTek platform uses BQ series chips

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BQ series chips start with BQ, used by Huawei

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Hi stands for Hisilicon series, such as Hi 6523, Hi 6526

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The charging chip used by Qualcomm in the early days was integrated inside the power chip

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For example, this chip,

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PM8150B is the charging chip,

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located below the SIM card holder,

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and there is a large inductor on its side

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Like Qualcomm's 855 865 platform,

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small power supplies are commonly used

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This charging chip PM8150B is a common charging chip

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As for the fast charging chip,

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Qualcomm generally uses the BQ 25970

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At present,

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many mid-to-high-end mobile phones will have fast charging chips starting with BQ

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Okay, that's all for this lesson