Patent ID: 7120492
Filing Date: 2006-10-10
Classification: A61N,H01F,H05K,Y10T

Abstract:
1. A voltage generator for use in an implantable medical device (IMD) comprising: a power source, the power source having output terminals; a lead-less transformer package, including a primary coil and a secondary coil wound around a core and including wire ends attached to bonding pads of a printed circuit of the lead-less package, the lead-less package adapted for electrical contact to a main circuit board of the IMD; a switch connected in series with the primary coil between the positive and negative terminals of the power source, the switch receiving an input signal to open and close the switch; a diode connected in series with the secondary coil across the terminals of a load, the load comprising a capacitive storage element connected to leads adaptable for connection to a heart; a sense circuit monitoring the voltage at the load, the sense circuit having an output signal which is a first signal when the output voltage of the voltage generator is below a selected threshold voltage and a second signal when the output voltage of the power supply is above or equal to the selected threshold voltage; and a controller, receiving the output signal of the sense circuit and transmitting the input signal to the switch to open and close the switch, wherein the controller closes the switch to provide power to the load when receiving the second signal and opens the switch when receiving the first signal.