Closing The Loop: Meeting High-Frequency Power Demands With Decoupling Capacitors

The inability to supply adequate power in time can result in intermittent board failure and hours troubleshooting in the lab. Even an IC with ample current supply can experience "power shortage" if the energy needed to transmit the data bitstream isn't available in time. Click here to read more. » read more

Things To Watch Out For

By Bhanu Kapoor A decoupling capacitor (DeCap) is used in power-managed designs to decouple a power domain from the effects of power switching in a related domain. A switching sub-circuit (a power domain or a voltage island) can mess up the power supply line upon which other sub-circuits or domains depend upon. When a load switches into a circuit, the circuit tries to increase its curre... » read more