| 摘要 |
Apparatus and methods for active detection, timing, and protection related to transient electrical events are disclosed. A detection circuit can generate a first activation signal in response to a transient electrical stress event across a first node and a second node. A blocking circuit is configured to bias the base of a first driver bipolar transistor to slow down discharge of accumulated base charge of a first driver bipolar transistor, which permits the first driver bipolar transistor to remain activated for a longer period of time than had the base of the first driver bipolar transistor been biased to the same voltage as the emitter of the first bipolar transistor. Shut-off circuitry can be included in some embodiments to prevent a discharge circuit from activating during normal operating conditions. |
