ECRI Microelectronics

Research on Overcurrent Protection Circuit of a New DCDC Converter

Abstract: This paper firstly introduces several types of over current protection and circuit implementation.And it mainly in-troduces a new style of over-current protection circuit which uses the coil resistance of output inductor for indirect samplIng of output current, also the sampling principle with temperature characteristics are theoretically analyzed.The effective control of over current protection point can be achieved by the temperature matching analysis

Key Words: sampling circuit;output inductor;over current protection

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