Power supply switch for wafer scale applications

Details Power supply switch for wafer scale applications Power supply switch for wafer scale applications

1987-12-21

1989-07-18

Pellinen, A. D.

Electricity: electrical systems and devices

Safety and protection of systems and devices

With specific voltage responsive fault sensor

361 42, 361 86, 361101, 340650, 324 73PC, 371 25, H02H 316, H02H 720

Patent

active

048498475

ABSTRACT:
An adjunct switch circuit is provided for detecting power to ground leaks in a portion of a chip circuit and for disabling such circuit portion in the event of a leak. The switch circuit of the invention is particularly useful for Wafer Scale Integration, and is conveniently employed in the testing of chip circuits following manufacturing.
In a preferred embodiment, the switch circuit includes a power supply, including a voltage source and a ground, a reset line for receiving a reset pulse, a first switch, connected in series with one of the power supply lines to the circuit portion ground and inversely responsive to both the reset pulse and the state of the circuit portion ground following termination of the reset pulse, and a second switch, connected between ground and the circuit portion ground and directly responsive to the reset pulse to leak current from the circuit portion ground to ground when turned on by the reset pulse.

REFERENCES:
patent: 4353105 (1982-10-01), Black
patent: 4371824 (1983-01-01), Gritter
patent: 4441136 (1984-04-01), Hampshire
patent: 4555742 (1985-11-01), Gray et al.
patent: 4646299 (1987-02-01), Schinabeck et al.

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