Integrated circuits with bi-directional charge pumps

A method, comprising:

• receiving a first voltage at a first input circuit of a bi-directional charge pump circuit;
• selectively turning on a first switch of a switching circuit that is coupled electrically to a deep N-well transistor of a first set of one or more intermediate pump stages that are coupled between the first input circuit and a first output circuit;
• providing a positive pump having a third voltage from the first output circuit in response to receiving a second voltage at an input of a first diode of the output circuit from the first set of the one or more intermediate pump stages;
• receiving the third voltage at a second input circuit of the bi-direction charge pump circuit;
• selectively turning on a second switch of the switching circuit that is coupled electrically to a deep n-well transistor of a second set of one or more intermediate pump stages that are coupled between the second input circuit and a second output circuit;
• and
• outputting a negative pump from the second output circuit in response to receiving a fourth voltage from the second set of one or more intermediate pump stages,
• wherein the deep N-well transistor includes a deep N-well in which a P-well is embedded, an N+ pellet is embedded within the deep N-well adjacent to the P-well and to an upper surface of the deep N-well, and
• wherein the first switch of the switching circuit electrically connects the N+ pellet to the P-well.

A method, comprising:

• receiving a first voltage at a first input circuit of a bi-directional charge pump circuit;
• selectively turning on a first switch of a switching circuit that is coupled electrically to deep N-well transistors of a first set of one or more intermediate pump stages that are coupled between the first input circuit and a first output circuit;
• receiving timing signals generated by a phase generator at the first set of the one or more intermediate pump stages;
• providing a positive pump having a third voltage from the first output circuit in response to receiving a second voltage at an input of a first diode of the output circuit from the first set of the one or more intermediate pump stages;
• receiving the third voltage at a second input circuit of the bi-direction charge pump circuit;
• selectively turning on a second switch of the switching circuit that is coupled electrically to deep n-well transistors of a second set of one or more intermediate pump stages that are coupled between the second input circuit and a second output circuit;
• and
• outputting a negative pump from the second output circuit in response to receiving a fourth voltage from the second set of one or more intermediate pump stages,
• wherein the deep N-well transistors include a deep N-well in which a P-well is embedded, an N+ pellet is embedded within the deep N-well adjacent to the P-well and to an upper surface of the deep N-well, and
• wherein the first switch of the switching circuit electrically connects the N+ pellet to the P-well.