Transistor overcurrent detection circuit with improved response time

An apparatus comprising:

• a driver;
• a switching half-bridge coupled to the driver, wherein the bridge includes:
• a first FET coupled to a voltage source;
• and
• a second FET coupled to the first FET and to ground;
• a first current sensor coupled across the first FET;
• a second current sensor coupled across the second FET;
• a first comparator having a plurality of FETs, wherein the first comparator compares a current sensed by the first current sensor to a first reference voltage to determine if an overcurrent condition exists, and wherein the first comparator is coupled to the driver so as to influence the switching of the bridge;
• a first current mirror coupled to the first comparator;
• a second comparator having a plurality of FETs, wherein the second comparator compares a current sensed by the second current sensor to a first reference voltage to determine if an overcurrent condition exists, and wherein the second comparator is coupled to the driver so as to influence the switching of the bridge, and wherein the first and second comparators share a plurality of FETs;
• and
• a second current mirror coupled to the second comparator.