| 摘要 |
A radiation hardened motor drive stage utilizes a non-radiation hardened P-channel FET switch. The radiation hardened motor drive stage includes a non-radiation hardened P-channel FET switch that is connected three (3) pairs of upper and lower switch blocks or legs wherein the output of each pair is connected to a motor winding switch terminal. The upper switch blocks or legs are connected the P-channel switch a. The lower switch block or legs are connected to a negative power bus. The negative power bus permits the N-channel FETS or IGTS within the switch blocks or legs exposed to ionized radiation to be controlled, even when their gate threshold voltage has dropped below zero volts.
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