초록 ▼

A charge pump controller provides the timing and drive voltages necessary for an self-regulated charge pump voltage converter. The controller utilizes a conventional non-overlapping two-phase clock to control the timing of switch drivers which control an array of switches. Pump and reservoir capacit

A charge pump controller provides the timing and drive voltages necessary for an self-regulated charge pump voltage converter. The controller utilizes a conventional non-overlapping two-phase clock to control the timing of switch drivers which control an array of switches. Pump and reservoir capacitors are distributed within the array. One of the switch drivers produces a modulated, or linear, drive voltage for one of the switches in the array in response to the charge pump\s output voltage. The controller thereby produces a regulated output voltage from the charge pump.

대표청구항 ▼

A self-regulated charge pump disposable between an electrical supply source and a load circuit, comprising: a transistor switch network including at least two pairs of transistors, with at least one of said transistors connected as a pass transistor, a reservoir capacitor connected to supply a load

A self-regulated charge pump disposable between an electrical supply source and a load circuit, comprising: a transistor switch network including at least two pairs of transistors, with at least one of said transistors connected as a pass transistor, a reservoir capacitor connected to supply a load voltage to a load circuit, a pump capacitor connected to supply charge to the reservoir capacitor, and a switch controller connected to said switch network and operative to isolate said pump capacitor from said reservoir capacitor in a first switching phase and to connect the pump capacitor to charge the reservoir capacitor in a second switching phase and to thereby produce a regulated output voltage across the reservoir capacitor, said switch controller producing at least one switch control signal that is varied continuously as a function of the difference between the output voltage of the charge pump and a fixed reference voltage, said switch controller further being connected to conduct electrical charge between a supply source and said pump capacitor in said first switching phase and to conduct electrical charge between said pump capacitor and said reservoir capacitor in said second switching phase, and to employ the continuously varied switch control signal to modulate the control terminal of said at least one pass transistor.