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

Claim 0:
1. A clamping and detection circuit, comprising:
a clamping sub-circuit, comprising:
a first clamping transistor coupled to a bus node and a first node,
a first diode coupled to the bus node and the first node,
a first high pass filter coupled to the bus node and a control input of the first clamping transistor,
a second clamping transistor coupled to the first node and a common mode node,
a second diode coupled to the first node and the common mode node, and
a second high pass filter coupled to the common mode node and a control input of the second clamping transistor;

a positive overshoot current detection sub-circuit, comprising:
a first transistor coupled to the first node,
a current mirror coupled to the first transistor,
a reference current source coupled to the current mirror at a second node, and
a first comparison device coupled to the second node; and

a negative overshoot current detection sub-circuit, comprising:
a biasing sub-circuit coupled to the first node,
a second transistor coupled to the biasing sub-circuit,
a resistor coupled to a supply voltage node and the second transistor at a third node, and

a second comparison device coupled to the third node.