Compound power supply

Abstract

A method of supply power to receive and provide a 10V input, 5V output with a continuous load of 1 A load current and a pulse load duration of 2 ms and a pulse load of 10 A load current, in a power supply including a switching regulator configured to provide a continuous current, the switching regulator comprising a current limit of 1.2 A and a linear regulator associated with the switching regulator. The method includes detecting whether a pulse load or a continuous load is required. The linear regulator is directed to provide a minimal current when the power supply is at a continuous load. The linear regulator is directed to provide a remaining portion of a pulse load current from the continuous load of the switching regulator. The switching regulator is deactivated and the linear regulator is directed to provide the continuous current in a condition that a noise-free mode is demanded.

1 . A method of supply power to receive and provide a 10V input, 5V output with a continuous load of 1 A load current and a pulse load duration of 2 ms and a pulse load of 10 A load current, in a power supply including a switching regulator configured to provide a continuous current, the switching regulator comprising a current limit of 1.2 A and a linear regulator associated with the switching regulator, the method comprising:
 detecting whether a pulse load or a continuous load is required;   directing the linear regulator to provide a minimal current when the power supply is at a continuous load;   directing the linear regulator to provide a remaining portion of a pulse load current from the continuous load of the switching regulator; and   deactivating the switching regulator and directing the linear regulator to provide the continuous current in a condition that a noise-free mode is demanded.