Patent ID: 11929753
Assignee: THE UNITED STATES OF AMERICA, AS REPRESENTED BY THE SECRETARY OF THE NAVY
Field: Basic communication processes (Electrical engineering)
Classification: CPC H | IPC H

Claim 8:
9. An non-linear charge pump system, comprising:
a charge pump configured to raise or lower voltage of a phase locked loop;
an auxiliary charge pump having a direct, unmediated connection to the charge pump, further comprising:
a positive switch having an direct, unmediated connection to an external power supply configured to supplement power to the charge pump;
a negative switch having an direct, unmediated connection to an external ground configured to discharge power from the charge pump;
a windowing comparator, further comprising:
an input signal received from the phase-locked loop;
a first high speed comparator configured to compare the input signal against a high voltage threshold, wherein the first high speed comparator generates an up signal if the input signal exceeds the high voltage threshold;
a second high speed comparator configured to compare the input signal against a low voltage threshold, wherein the second high speed comparator generates a down signal if the input signal exceeds the low voltage threshold;
an AND logic gate configured to provide a window signal; and

an activation circuit electrically connected to the positive switch and negative switch, configured to activate the positive switch if the second high speed comparator generates the up signal, or to activate the negative switch if the first high speed comparator generates the down signal.