Voltage droop is the loss in output voltage from a device as it tries to drive a load.Digital Logic Noise, Phase Jitter, EMI, RFI and other issues on Leroy's Engineering Web Site Droops are typically temporary and occur due to the charging time of a capacitive load, the length of which is related to the time constant of the RC circuit. Although small amounts of voltage droop are unavoidable, there are times when voltage droop is excessive and can cause unexpected and unwanted behaviour in a circuit.

To prevent voltage droop, decoupling capacitors should be chosen to compensate for the current needed to drive the load.

See also

• Voltage spike

References