Miscellaneous active electrical nonlinear devices – circuits – and – Specific identifiable device – circuit – or system – With specific source of supply or bias voltage
Patent
1995-04-05
1997-06-24
Cunningham, Terry
Miscellaneous active electrical nonlinear devices, circuits, and
Specific identifiable device, circuit, or system
With specific source of supply or bias voltage
327537, 327538, 327540, 327543, 327545, G05F 302
Patent
active
056420730
ABSTRACT:
A multi-phase charge pump continuously pumps to establish a DC voltage outside the range of supply and reference voltages. The multi-phase charge pump in one embodiment includes four stages operating in a ring with a four-phase clock. Each stage includes a three-mode charge pump that generates and provides reset and control signals to other stages. Each stage includes a pass transistor having a gate driven in excess of the DC voltage for efficient transfer of charge. The gate drive signal from a first stage is coupled to a next stage in the ring where it is used to generate the next gate drive signal. Each gate drive signal corresponds to one waveform having a phase skewed in time so that each stage in the ring is operating in a different mode. In a method of use, a first stepped voltage is developed on a first capacitor and selectively coupled to a second capacitor to develop a second stepped voltage of greater absolute value. The second stepped voltage gates charge transfer from a first stage and enables the selective coupling in a next stage in a sequence of pump stages. The pump stages include protection circuits protecting high-voltage nodes during burn-in testing. The charge pump includes a burn-in detector circuit for detecting burn-in conditions and for turning on the protection circuits and a pump regulator for regulating the output of the charge pump.
REFERENCES:
patent: 4583157 (1986-04-01), Kirsch et al.
patent: 4631421 (1986-12-01), Inoue et al.
patent: 4733108 (1988-03-01), Truong
patent: 4807104 (1989-02-01), Floyd et al.
patent: 4843256 (1989-06-01), Scade et al.
patent: 4961007 (1990-10-01), Kumanoya et al.
patent: 4970409 (1990-11-01), Wada et al.
patent: 5034625 (1991-07-01), Min et al.
patent: 5179296 (1993-01-01), Ito
patent: 5196996 (1993-03-01), Oh
patent: 5202588 (1993-04-01), Matsuo et al.
patent: 5266842 (1993-11-01), Park
patent: 5301097 (1994-04-01), McDaniel
patent: 5304859 (1994-04-01), Arimoto
patent: 5343088 (1994-08-01), Jeon
Cunningham Terry
Micro)n Technology, Inc.
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