A bipolar output charge pump circuit having a network of switching paths for selectively connecting an input node and a reference node for connection to an input voltage, a first pair of output nodes, two pairs of flying capacitor nodes, and a controller for controlling the switching of the network of switching paths. The controller is operable to control the network of switching paths when in use with two flying capacitors connected to the two pairs of flying capacitor nodes, to provide a first mode and a second mode when in use with two flying capacitors connected to the flying capacitor nodes, wherein at least the first mode corresponds to a bipolar output voltage of +/−3VV, +/−VV/5 or +/−VV/6.

A voltage supply circuit and a method for controlling a voltage supply circuit are provided. The voltage supply circuit includes a positive charge pump stage that generates a positive voltage and a negative charge pump stage that generates a negative voltage. The voltage supply circuit also includes a control stage that compares a voltage representative of the negative voltage with a reference voltage and causes a slope of the positive voltage to decrease when the voltage representative of the negative voltage exceeds the reference voltage.

A bipolar output charge pump circuit having a network of switching paths for selectively connecting an input node and a reference node for connection to an input voltage, a first pair of output nodes and a second pair of output nodes, and two pairs of flying capacitor nodes, and a controller for controlling the switching of the network of switching paths. The controller is operable to control the network of switching paths when in use with two flying capacitors connected to the two pairs of flying capacitor nodes, to provide a first bipolar output voltage at the first pair of output nodes and a second bipolar output voltage at the second pair of bipolar output nodes.

A charge pump unit structure of a charge pump circuit includes a booster circuit unit, a positive pump transfer unit and a negative pump transfer unit. An output terminal of the booster circuit unit is connected to an input terminal of the positive pump transfer unit through a first switch circuit and to an input terminal of the negative pump transfer unit through a second switch circuit. An erase enable signal is connected to control terminals of the positive and negative pump transfer units. A first enable signal is connected to control terminals of the positive pump transfer unit and the first switch circuit. A second enable signal is connected to control terminals of the negative pump transfer unit and the second switch circuit.

A charge pump device is configured to generate an output voltage from a square wave, where the charge pump device includes a semiconductor layer; first and second outer wells; a first inner well formed in the first outer well; a second inner well formed in the second outer well; a first capacitor, to which the input signal is applied, and connected to the first outer well; and a second capacitor connected to the first capacitor and second outer well, wherein the first voltage is applied to the first outer well, and a voltage that is lower than the first voltage is applied to the second outer well.

A control circuit for at least one voltage generator includes a first transistor, a first controller, a second transistor, a second controller and a communicator. The first transistor is coupled to a first output terminal of the at least one voltage generator. The first controller is coupled to a control terminal of the first transistor. The second transistor is coupled to a second output terminal of the at least one voltage generator. The second controller is coupled to a control terminal of the second transistor. The communicator, coupled between the first controller and the second controller, is configured to selectively control the first controller and the second controller to communicate with each other or not according to the at least one voltage generator.

A DC-DC converter including voltage and slope regulation and a method of operating the same are provided. Generally, the converter includes a voltage source to supply an output, a switching-circuit coupled to the voltage sources to control a voltage on the output, and a slope-detector coupled to the switching-circuit and the output to detect a slope of a voltage transition between a first and a second voltage. When the detected slope exceeds a predetermined maximum the slope-detector sends a digital signal to the switching-circuit to intermittently pause the voltage transition to limit the slope to less than the maximum. In one embodiment, the voltage source is a charge-pump, and the switching-circuit includes a logic-gate coupled to the slope-detector to turn the charge-pump ON when the detected slope is less than the maximum, and to turn OFF the charge-pump for a time when the slope exceeds the maximum.

The present subject matter relates to charge pump devices, systems, and methods in which a plurality of series-connected charge-pump stages are connected between a supply voltage node and a primary circuit node, and a discharge circuit is connected to the plurality of charge-pump stages, wherein the discharge circuit is configured to selectively remove charge from the primary circuit node.

The present disclosure provides a charge pump circuit. The power receiving terminal receives a power voltage. The first energy storage capacitor is coupled between the positive output terminal and the ground terminal. The second energy storage capacitor is coupled between the negative output terminal and the ground terminal. The charge pump circuit controls the first and the second flying capacitors to have a first and a second connection relation with the power-receiving, the ground and the positive and the negative output terminals respectively within a first and a second operation time in a double voltage power supplying mode. The charge pump circuit is operated in the first and the second operation time in an interlaced manner, such that the positive and the negative output terminals respectively output a positive and a negative output voltages each having a voltage value that is a double of that of the power voltage.

Systems and methods of memory operation involving charge pump circuitry located on a die and coupled to external pump capacitors are disclosed. In one embodiment, an exemplary system may comprise a memory die containing a memory array and charge pump circuitry configured to generate a pump voltage supplied to the memory array, and one or more pump capacitors located external to the die and configured to hold stored charge that is used to generate the pump voltage. Some embodiments may include a tank capacitor, also located off-die, to condition the charge provided from the pump capacitor. According to further embodiments, the charge pump circuitry may include one or both of max current control circuitry and/or switch resistance control circuitry that may be utilized, for example, to adjust peak current.