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Hello everyone, today we are going to learn a typical dual PWM controller workflow

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First, let's take this common standby chip as an example

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For a chip to work, the first step needs to meet the power supply,

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so the first step in the workflow is the power supply

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Here, pins 15 and 16 are the power input pins

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The second step, it needs to be enabled

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With EN1, the opening of channel 1 will turn on the first PWM output

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The V0 pin is used to detect whether the output voltage is normal,

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and the FB pin is used to feedback and adjust the output voltage

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When the output voltage is normal, the PG signal will be generated

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When it gets the opening signal of the second channel,

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it will control the second channel PWM circuit to work, and generate PWM output

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After the second PWM output,

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the V0 pin is used to detect whether the output voltage is overvoltage or undervoltage

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At the same time, it needs to adjust its voltage through the FB pin

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When its output voltage is stable, the chip will delay to open and leak out the second PG signal

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PG here means a good power signal

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This is the workflow of the dual PWM controller

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The so-called dual PWM controller means that the chip can control two PWM outputs

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Okay, so that's the typical dual PWM controller workflow