An implantable medical device, comprising: a power source (610, 612); a delivery circuit comprising a plurality of output capacitors (62a, 62b, 62c); a charge circuit coupled to the power source and to the delivery circuit output capacitors, including a transformer having a single primary winding coupled to the power source and characterized by the transformer having a single secondary winding coupled to a first of the output capacitors of the delivery circuit via a single, first, diode; a delivery bridge selectively coupled to the plurality of capacitors, wherein the plurality of capacitors are coupled to the delivery bridge in one of multiple dynamically-alterable configurations during a discharge of the energy; and a controller configured to control the coupling of the plurality of output capacitors to the delivery bridge in one of the multiple dynamically-alterable configurations in response to a predetermined event such that the discharged energy generates a stimulation waveform having a ramped profile that is shaped based on an individual patient response; and wherein the controller is configured to couple the plurality of capacitors in a parallel configuration prior to commencement of charging of the plurality of capacitors and to selectively stack each of the plurality of capacitors in a series configuration in dynamically configurable intervals during the discharge; and wherein the delivery circuit further comprises a second diode coupled directly between the first diode and a second of the plurality of output capacitors, and a third diode coupled directly between the second diode and a third of the plurality of output capacitors. a power source (610, 612); a delivery circuit comprising a plurality of output capacitors (62a, 62b, 62c); a charge circuit coupled to the power source and to the delivery circuit output capacitors, including a transformer having a single primary winding coupled to the power source and characterized by the transformer having a single secondary winding coupled to a first of the output capacitors of the delivery circuit via a single, first, diode; a delivery bridge selectively coupled to the plurality of capacitors, wherein the plurality of capacitors are coupled to the delivery bridge in one of multiple dynamically-alterable configurations during a discharge of the energy; and a controller configured to control the coupling of the plurality of output capacitors to the delivery bridge in one of the multiple dynamically-alterable configurations in response to a predetermined event such that the discharged energy generates a stimulation waveform having a ramped profile that is shaped based on an individual patient response; and wherein the controller is configured to couple the plurality of capacitors in a parallel configuration prior to commencement of charging of the plurality of capacitors and to selectively stack each of the plurality of capacitors in a series configuration in dynamically configurable intervals during the discharge; and wherein the delivery circuit further comprises a second diode coupled directly between the first diode and a second of the plurality of output capacitors, and a third diode coupled directly between the second diode and a third of the plurality of output capacitors.