स्विच मोड वीजपुरवठा (एसएमपी), स्विच मोड पॉवर सप्लाय किंवा स्विच कन्व्हर्टर म्हणून देखील ओळखले जाते, एक उच्च-वारंवारता विद्युत ऊर्जा रूपांतरण डिव्हाइस आणि एक प्रकारचा वीजपुरवठा आहे. Its function is to convert a precise voltage into the voltage or current required by the user through different forms of architecture. The input of a switching power supply is mostly an AC power supply (such as mains power) or a DC power supply, while the output is mostly a device that requires a DC power supply, such as a personal computer, and the switching power supply converts the voltage and current between the two.