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 0:
1. An auxiliary charge pump apparatus, comprising:
a positive switch having a direct, unmediated connection to an external power supply configured to supplement power to a charge pump, wherein the auxiliary charge pump has a direct, unmediated connection to the charge pump;
a negative switch having a direct, unmediated connection to an external ground configured to discharge power from the charge pump, wherein the auxiliary charge pump has a direct, unmediated connection to the charge pump;
a windowing comparator, further comprising:
an input signal received from a 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 a down signal if the input signal exceeds the high voltage threshold, and wherein the high voltage threshold is set externally;
a second high speed comparator configured to compare the input signal against a low voltage threshold, wherein the second high speed comparator generates an up signal if the input signal exceeds the low voltage threshold, and wherein the low voltage threshold is set externally;
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.