Patent ID: 8706249

Claim:
An implantable pulse generator (IPG) for generating electrical pulses for stimulation of tissue of a patient, comprising: a controller for controlling operations of the IPG; circuitry for generating first, second, third, and fourth logic levels; pulse generating circuitry for generating electrical pulses, wherein (i) the pulse generating circuitry comprises a first voltage domain and a second voltage domain; (ii) the first voltage domain comprises at least one transistor; (iii) the second voltage domain comprises at least one transistor; (iv) the first voltage domain generates an output logic signal; (v) the second domain receives an input logic signal; (vi) the at least one transistor in the first voltage domain is gated by the first and the second logic levels; and (vii) the at least one transistor in the second voltage domain is gated by the third and the fourth logic levels, the third logic level being different from the first logic level and the fourth logic level being different from the second logic level; and conversion circuitry for converting the output logic signal generated by the first voltage domain for provision to the second voltage domain as the input logic signal, the conversion circuitry comprising a first stage and a second stage, wherein (i) the first stage receives the first and second logic levels; (ii) the second stage receives the third and fourth logic levels, (iii) the second stage comprising two sets of cross-coupled transistors for generating the input logic level at the third and fourth logic levels according to whether the output logic signal generated by the first voltage domain is at the first or second logic level.