Patent ID: 11967968
Assignee: TEXAS INSTRUMENTS INCORPORATED
Field: Basic communication processes (Electrical engineering)
Classification: CPC H | IPC H

Claim 10:
11. A method of over-current protection for a multi-channel digital-to- analog converter (DAC), the method comprising:
providing an alert signal for each DAC channel that has an output current that exceeds a higher current limit;
determining a sum of responsive to the alert signals;
providing a start limit signal responsive to the sum exceeding a threshold;
providing an end limit signal responsive to the sum falling below the threshold minus a hysteresis value;
reducing an output current limit of the DAC channels from the higher current limit to a lower current limit responsive to the start limit signal; and
increasing the output current limit of the DAC channels from the lower current limit to the higher current limit responsive to of the end limit signal.