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Hello everyone, today we are going to learn about Apple PMIC

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The PMIC in Apple computers is Apple's own power management chip

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The chip is integrated with PWM step-down circuit, LDO circuit and some switching circuit,

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such as 3V to 3V, 1V to 1V voltage conversion circuit

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It looks like this, and there's a bunch of supply inductors around it,

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and these are its output voltages

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Each inductor represents a PWM output

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But the power consumption of this PWM circuit is relatively small

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Its conversion efficiency is not very high and can only power a low-power Apple T2 chip or M1 processor

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It doesn't work well with powerful Intel processors or GPUs

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For example, this CPU and GPU use traditional PWM power supply

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This power supply mode output current is large, the calorific value is also relatively high

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Apple's T2 chip, as well as its own M1 processor,

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uses its own power management chip, or PMIC

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The main power supply and the secondary power supply output each power supply

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to meet the working condition of M1

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It includes CPU core power supply, memory power supply, and its various modules power supply

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The power supply chip generates much less heat than conventional PWM power supply

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Okay, so that's the introduction of Apple's PMIC