Patent ID: 11870246
Assignee: TEXAS INSTRUMENTS INCORPORATED
Field: Measurement (Instruments)
Classification: CPC H  G | IPC G  H

Claim 9:
10. A circuit comprising:
a silicon controlled rectifier (SCR) circuit;
a clamping sub-circuit comprising:
a first transistor having a first current terminal, a second current terminal, and a first control terminal, the first current terminal coupled to the SCR circuit;
a first high pass filter coupled to the first control terminal and the first current terminal;
a second transistor having a third current terminal, a fourth current terminal, and a second control terminal, the third current terminal coupled to the second current terminal and the fourth current terminal coupled to the SCR circuit; and
a second high pass filter coupled to the second control terminal and to the fourth current terminal; and

a negative overshoot current detection sub-circuit comprising:
a biasing sub-circuit coupled to the second current terminal;
a third transistor having a fifth current terminal, a sixth current terminal, and a third control terminal, the third control terminal coupled to the biasing sub-circuit and the sixth current terminal coupled to the fourth current terminal;
a resistor coupled to the fifth current terminal and to the biasing circuit; and
a comparison device coupled to the fifth current terminal.