OB2212 is an efficient DC-DC converter power chip, which is mainly used in portable electronic devices such as mobile power supply, power bank, PDA. OB2212 adopts step-down PWM control mode to work, its main principle is to step-down the input voltage to the required output voltage, and maintain the stability of the output voltage.
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The OB2212 integrates MOSFET tubes, drivers and current detection circuits to achieve efficient energy conversion. Specifically, the input voltage generates high-frequency oscillations through separate MOSFET tubes and inductors that are stepped down to the desired output voltage. The feedback circuit inside the power chip monitors the output voltage in real time. If the output voltage does not meet the set value, the chip will adjust the PWM output signal to achieve output voltage stability.
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The use of OB2212 power supply chip can effectively improve the efficiency of power conversion, make full use of input power supply energy, and ensure the stability of output voltage.
The working principle of the OB2212 power supply chip is to convert the input voltage to the output voltage within the input voltage range and provide stable output power.
It adopts CMOS technology and Bootstrap circuit design to achieve stable output through feedback control of output voltage. In addition, the chip also has overload, short circuit and other protection functions, which can effectively protect the safe operation of the circuit system.
It is suitable for a variety of DC-DC power applications, such as communications, television, LED lighting and other fields.
At the same time, OB2212 also has the characteristics of low static current and high efficiency, which can effectively reduce the system power consumption.