Yuan Sheng Da analysis of the classification of pressure chips

In consumer electronics and small household appliances and other products, manufacturers need to use many types of chips and modules to achieve more complex functions in order to differentiate products among similar products. And the operating voltage of each module will be different, then you needLift chipTo convert the voltage.

The pressure lifting chip is commonly classified as follows:

1Switch type: usually have booster, step-down, step-down-Booster topology. During each switching cycle, energy is alternately transferred from the power supply to the inductor and capacitor, thereby transferring input energy to the output through the energy storage element (inductor).

2, linear stabilized type namelyLDO, only in step-down conversion structures. The internal power tube works in the linear zone and adjusts the internal power tube linearly to ensure the output voltageVoutIs the reference voltageVrefA preset scale value is reached.

3, charge pump. Often used in voltage doubling circuit, positive pressure and negative pressure conversion.

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