US 12,374,984 B2 · Robust low power standby controller for wearable and healthcare supply modules

Abstract

A controller includes a first circuit that receives first and second input signals and generates an output pulse based on the first and second input signals. A timer circuit of the controller generates the first input signal for the first circuit. A second circuit of the controller generates the second input signal for the first circuit. In response to the second input signal being set to a first value, smaller than a second value, the first circuit sets the output pulse to the second value and start a first duration. In response to the second input signal being set to the second value and the first input signal changing from the first value to the second value, the first circuit sets the output pulse to the first value to end the first duration and start a second duration such that the second duration is maintained more than a time limit.

Claims20

Dependent claims

A controller, comprising:

a first circuit configured to receive first and second input signals and generate an output pulse based on the first and second input signals;
a timer circuit configured to generate the first input signal for the first circuit;
and
a second circuit configured to generate the second input signal for the first circuit, wherein:
in response to the second input signal being set to a first value, smaller than a second value, the first circuit is configured to set the output pulse to the second value and start a first duration,
in response to the second input signal being set to the second value and the first input signal changing from the first value to the second value, the first circuit is configured to set the output pulse to the first value to end the first duration and start a second duration, and
the second duration is maintained more than a predetermined time limit.

4 more elements

A power supply, comprising:

a comparator coupled to a first voltage source and a second voltage source to generate a comparison signal based on a difference between a first voltage value of the first voltage source and a second voltage value of the second voltage source;
and
a controller configured to generate a controller output pulse, wherein the controller comprises:
a first circuit configured to receive a first input signal and a second input signal and generate the controller output pulse based on the first input signal and the second input signal;
and
a second circuit comprising first and second timer circuits having first and second timeout periods respectively, wherein the first timer circuit is configured to generate the first input signal for the first circuit, wherein the second timer circuit is configured to receive the comparison signal and to generate the second input signal for the first circuit, and wherein:
in response to the second input signal being set to a first value, smaller than a second value, the first circuit is configured to set the controller output pulse to the second value and start a first duration and end a second duration,
in response to the comparison signal being set to the second value, the second timer circuit starts and the second input signal of the first circuit is set to the first value, and
the first and second timeout periods are determined to maintain the second duration more than a predetermined time limit.

6 more elements

A controller comprising:

an input circuit configured to receive a comparison signal and a first clock signal and generate an intermediate clock signal and a second clock signal, wherein the first clock signal has a first frequency that is a predetermined number of times greater than an intermediate frequency of the intermediate clock signal, wherein the second clock signal is provided at an output of the input circuit with a second frequency that is half of the intermediate frequency, and wherein the second clock signal is set to a first value in response to the comparison signal being at a second value, greater than the first value, and the comparison signal being the first value;
and
an output circuit configured to receive an input voltage and the second clock signal and generate an output pulse, wherein the output pulse is a periodic pulse that is set to the second value in response to the second clock signal being set from the first value to the second value, wherein the output circuit is configured to keep the output pulse at the second value for a duration of time that is inversely proportional to the input voltage, and wherein a frequency of the output pulse is a same as the second frequency of the second clock signal.

Dependencies are inferred from the claim text.

Robust low power standby controller for wearable and healthcare supply modules

Life of this patent

Robust low power standby controller for wearable and healthcare supply modules

Life of this patent

Abstract

Claims20