Semiconductor device with power supply voltage converter circuit

Details Semiconductor device with power supply voltage converter circuit Semiconductor device with power supply voltage converter circuit

1987-03-30

1989-05-23

Miller, Stanley D.

Electrical transmission or interconnection systems

Nonlinear reactor systems

Parametrons

307491, 307360, 323311, G05F 316

Patent

active

048333417

ABSTRACT:
An integrated semiconductor device is disclosed which has a highly-integrated circuit formed on a substrate. A constant voltage generator is connected to the integrated circuit, for receiving an externally-supplied d.c. power supply voltage to produce a regulated d.c. voltage, the potential level of which is lower than the external power supply voltage and remains substantially constant irrespective of the external power supply voltage. A mode-change controller is connected in parallel with the voltage generator, for supplying the output d.c. voltage of the voltage generator to the integrated circuit as an internal power supply voltage in a normal operation mode. When the device is subjected to an accelerated test using an increased power supply voltage, a switching transistor is rendered conductive under the control of a control circuit, thereby allowing the external power supply voltage to be directly applied to the integrated circuit.

REFERENCES:
patent: 3639779 (1972-02-01), Garrigus
patent: 4691123 (1987-09-01), Hashimoto
K. Itoh et al.: "An Experimental 1Mb Dram with On-Chip Voltage Limiter", ISSCC Dig. Tech. Papers, p. 282 (1984).

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