Charging protection method and device, mainboard and display
A charging protection and display technology, applied in circuit devices, battery circuit devices, battery overcurrent protection, etc., can solve the problems of poor controllability, rigidity, and unfavorable charging process stability, so as to improve stability and reduce false triggering. Effect
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[0039] In addition to the conventional HDMI (High Definition Multimedia Interface, high-definition multimedia interface) and DP (DisplayPort) interfaces, the display can also be equipped with a type-C interface, which can charge mobile terminals such as mobile phones and laptops through the type-C interface . For example, the external charging power of the type-C port in the display can reach 100W. At the same time, Over Current Protection (OCP) has become an important issue for display type-C external charging. The traditional overcurrent protection method is realized by the hardware protection circuit set inside the PMIC (Power Management IC, power management integrated circuit), that is, the PMIC itself sets a current threshold, and when the instantaneous load current reaches the threshold, it will immediately Protection, stop charging.
[0040] However, the inventor found through long-term practical research that, in some charging scenarios, although the load draw is too...
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