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Role of Capacitor [1]
Copyright. SAMSUNG ELECTRO-MECHANICS All rights reserved. SAMSUNG Role of Capacitor 1.Overview of Capacitor Role 2.Noise Filtering caused by IC Switching 3.Noise Filtering caused by Converter Switching 4.Power Delivery Network SAMSUNG Role of Capacitor, Overview The main purpose of a capacitor: Noise Filtering, Matching, Coupling - Usage portion of capacitor for noise filtering in smartphone is beyond 90% [Noise Filtering] Elimination of electrical noise [Matching] Passing a specific signal through C and L in RF [Coupling] Dc-block & AC-pass SAMSUNG Role of Capacitor, Noise Filtering Noise Filtering: Noise reduction in power or signal lines Circuit Type, Application - Elimination of Simultaneous Switching Noise (SSN) on Power Delivery Network, Noise Source - Current consumption variation on IC, Effect of Filtering Circuit Type, Application - Regulation of Switching Power, Noise Source - DC-DC Converter, Effect of Filtering Circuit Type, Application - Elimination of Analog Signal noise, Noise Source - Parasitic L, C in a circuit, Effect of Filtering Circuit Type, Application - Elimination of Digital Signal noise, Noise Source - Parasitic L, C in a circuit, Effect of Filtering SAMSUNG Role of Capacitor, Noise source The capacitor performs AC noise reduction in power line - A battery supplies DC power to the Power Distribution Network [Typical Power Distribution Network] Battery: DC power supply, Capacitor: AC noise ↓ → Stabilization for input voltage into IC Copyright. SAMSUNG ELECTRO-MECHANICS All rights reserved.