Amplitude modulating waveform pattern generation for stimulation in an implantable pulse generator

An implantable pulse generator (IPG) adapted for use with one or more electrode leads each comprising a plurality of electrodes, the IPG comprising:

• control circuitry configured to:
• receive instructions to form a modulated waveform, wherein the modulated waveform comprises a plurality of pulses, wherein each pulse of the plurality of pulses is defined by a plurality of stimulation parameters, and wherein at least one of the stimulation parameters is modulated within the modulated waveform,
• configure an aggregate program for the modulated waveform, wherein the aggregate program comprises a separate aggregate instruction for each pulse of the plurality of pulses,
• wherein each aggregate instruction links a pulse program defining stimulation parameters of the pulse with a modulation factor that modulates at least one of the stimulation parameters of the pulse according to a predefined modulation function, and
• wherein at least two aggregate instructions of the aggregate program comprise different modulation factors linked to the same pulse program,
• execute the aggregate program to form the modulated waveform, and
• apply an amplitude scale value to the modulated waveform to form an amplitude-scaled modulated waveform, and
• generate one or more control signals indicative of the amplitude-scaled modulated waveform,
• digital-to-analog conversion (DAC) circuitry configured to:
• convert the one or more digital control signals to analog pulse signals, and
• apply the one or more analog pulse signals at one or more of the plurality of electrodes.