Multi-lead protected power device having current and boot-strap inputs

摘要

A multi-leaded protected power device having a boot-strap input has been provided. The power device includes a current controlled, boot-strap driven control die (20) for use with a power transistor (25). The control die includes an under voltage lock-out circuit (46) which inhibits drive to the power transistor until the input signals exceed a predetermined threshold level. Moreover, the control die includes a noise immunity enhancement circuit (56) for providing an excess reverse bias across an output SCR (58) for preventing false triggering of the output SCR. The power device further includes a status output lead (204) for indicating when a voltage occurring across the power transistor has exceeded a predetermined threshold, and a current output lead (220) for providing a current that is proportional to a current flowing through the power transistor.