Patent ID: 6809500
Filing Date: 2004-10-26
Classification: H02J,H02M,H03K

Abstract:
A power supply apparatus comprising:a power node; an electrochemical device configured to store electrical energy; a switch including a control node-and the switch is adapted to electrically couple the electrochemical device with the power node in a conducting state and to substantially electrically isolate the electrochemical device and the power node in a nonconducting state; a controller configured to output a first control signal to control the operation of the switch between the conducting state and the nonconducting state; and circuitry coupled with the controller and the control node and configured to receive electrical energy at a first voltage magnitude, to increase the electrical energy to a second voltage magnitude greater than the first voltage magnitude to provide a second control signal, and to output the second control signal of the second voltage magnitude to the switch.