# US 12,003,237 B2 · Methods and apparatus for arc reduction in power delivery systems > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,003,237 B2 - Document ID: US12003237B2 - Status: Granted - Kind: B2 - Application number: 17/587,713 - Filed: 2022-01-28 - Published: 2023-08-03 - Granted: 2024-06-04 - Earliest claimed: 2022-01-28 - Assignees: Texas Instruments Incorporated - Applicants: Texas Instruments Incorporated - Inventors: Deric Wayne Waters - Web page: https://patentgrep.com/patent/US12003237B2 ## CPC - H03K 19/00346: {Modifications for eliminating interference or parasitic voltages or currents} - H03K: PULSE TECHNIQUE (measuring pulse characteristics G01R; modulating sinusoidal oscillations with pulses H03C; transmission of digital information H04L; discriminator circuits detecting phase difference between two signals by counting or integrating cycles of oscillation H03D3/04; automatic control, starting, synchronisation or stabilisation of generators of electronic oscillations or pulses where the type of generator is irrelevant or unspecified H03L; coding, decoding or code conversion, in general H03M) ## Abstract An example apparatus includes: a switch having a first current terminal, a second current terminal and a control terminal, the first current terminal adapted to be coupled to a first capacitor, the second current terminal adapted to be coupled to a second capacitor; a comparator having a comparator input and a comparator output, the comparator input coupled to a configuration terminal; a deglitch circuit having a deglitch input and a deglitch output, the deglitch input coupled to the comparator output, the deglitch circuit having a deglitch duration between a first duration and a second duration; and a universal serial bus (USB) controller having a controller output and a controller input, the controller output coupled to the control terminal, the controller input coupled to the deglitch output. ## Claims ### Claim 1 An apparatus comprising: a switch having a first current terminal, a second current terminal and a control terminal, the first current terminal adapted to be coupled to a first capacitor, the second current terminal adapted to be coupled to a second capacitor; a comparator having a first comparator input, a second comparator input, and a comparator output, the first comparator input coupled to a configuration terminal; a deglitch circuit having a deglitch input and a deglitch output, the deglitch input coupled to the comparator output; and a controller having a first controller output, a second controller output, and a controller input, the first controller output coupled to the control terminal, the second controller output coupled to the second comparator input, and the controller input coupled to the deglitch output. ### Claim 2 (depends on 1) The apparatus of claim 1, wherein the apparatus further includes a variable power supply coupled in parallel with the first capacitor. ### Claim 3 (depends on 1) The apparatus of claim 1, wherein the switch is an n-channel field effect transistor (NFET) including a gate terminal and wherein the gate terminal is the control terminal. ### Claim 4 (depends on 1) The apparatus of claim 1, wherein the first comparator input is coupled to a reference voltage, and the reference voltage is configured to enable the comparator to determine a value of the first comparator input. ### Claim 5 (depends on 1) The apparatus of claim 1, wherein the apparatus further includes a driver coupled to the first comparator input, the driver configured to set and/or clear the first comparator input to transmit data. ### Claim 6 (depends on 5) The apparatus of claim 5, wherein the driver is a baseband management controller (BMC), and the BMC is configured to receive and transmit data on the first comparator input. ### Claim 7 (depends on 1) The apparatus of claim 1, wherein the apparatus further includes a load coupled in parallel to the first capacitor. ### Claim 8 (depends on 1) The apparatus of claim 1, wherein the deglitch circuit has a deglitch duration between a first duration and a second duration, and the controller is configured to determine whether deglitch duration is the first duration or the second duration, and the controller is configured to set the deglitch duration. ### Claim 9 A method comprising: receiving, by circuitry, data at a configuration terminal of a bus; monitoring, by the circuitry, a signal at the configuration terminal of the bus; comparing, by the circuitry, the signal at the configuration terminal to a reference voltage to produce a comparison signal; determining, by the circuitry, a device disconnect based the comparison signal have a value for more than a deglitch duration; producing, by the circuitry, a control signal based on determining the device disconnect; and transmitting a data transmission across a configuration channel based on a controller driving the configuration terminal. ### Claim 10 (depends on 9) The method of claim 9, further comprising: reducing power in a device by disabling a switch in response to the control signal; and supplying power from a power supply through the switch, and the switch reduces the power supplied by the power supply as a result of being disabled. ### Claim 11 (depends on 9) The method of claim 9, further comprising determining the deglitch duration based on a duration of the data transmission. ### Claim 12 (depends on 9) The method of claim 9, further comprising: reducing power in a device by disabling a switch in response to the control signal; and receiving power from a power supply through the switch, and the switch reducing the power received by the device as a result of being disabled. ### Claim 13 (depends on 9) The method of claim 9, further comprising: reducing power in a device by disabling a switch in response to the control signal; and determining the deglitch duration based on a magnitude of power being supplied through the switch. ### Claim 14 (depends on 13) The method of claim 13, further comprising reducing the deglitch duration based on the magnitude of power being greater than a threshold. ### Claim 15 (depends on 9) The method of claim 9, further comprising: reducing power in a device by disabling a switch in response to the control signal; and enabling the switch based on a duration of a data transmission compared to a threshold. ### Claim 16 (depends on 9) The method of claim 9, further comprising a general-purpose input output (GPIO) pin, and asserting the GPIO pin to reduce power consumed by a device. ### Claim 17 (depends on 16) The method of claim 16, further comprising asserting the GPIO pin during a data transmission on the configuration terminal as a result of a length of the data transmission being determined to be greater than a threshold. ### Claim 18 A system comprising: a device including a controller, the controller configured to: supply power of a first supply value to a load based on a magnitude of power supplied by a power supply; responsive to determining the first supply value is greater than a first threshold, determine a length of a data transmission; responsive to determining the length of the data transmission is greater than a second threshold, configure the load for a second supply value; and transmit the data transmission. ### Claim 19 (depends on 18) The system of claim 18, wherein the device is configured to disable a switch as a result of determining a device disconnect based on comparing a voltage of a configuration channel to a reference voltage. ### Claim 20 (depends on 18) The system of claim 18, wherein the device is configured to modify the load to adjust for the first supply value after the data transmission. ### Claim 21 (depends on 18) The system of claim 18, wherein the device is configured to modify the load by asserting or de-asserting a general-purpose input output pin to adjust a load current.