| 摘要 |
A low cost high side supply shut down circuit that operates to deactivate the power supply of a central supply, such as to pressure regulators, solenoid valves, etc., as parts of non-repairable electro-hydraulic transmission modules in the event of a malfunction, e.g. a low side driver circuit failure. The supply voltage is connected to the high side of a fuse. The load circuits receive power or no power depending on the operating condition of the fuse. Coupled across the fuse is a fuse trigger status detection circuit as part of a diagnostics and control module. The diagnostics and control module is connected to the input of a shut down low side output driver circuit. The attached low side loads have individual detection circuits that are coupled to the diagnostics and control module as well as their enable inputs. Based on information gathered from feedback lines, the fuse will be triggered (opened) by the low side driver circuit that is capable of driving a current that exceeds the maximum operational current of the fuse. When the fuse opens, the current to the load circuits is interrupted, thereby protecting the loads driven by the load circuits from permanent damage.</PTEXT>
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