Electric power conversion systems – Current conversion – With means to connect the input to diverse power sources
Patent
1997-11-10
1999-12-14
Han, Y. J.
Electric power conversion systems
Current conversion
With means to connect the input to diverse power sources
365228, 323314, H02M 110, G11C 1300
Patent
active
060026049
ABSTRACT:
A 5V generator circuit is disclosed that generates a reliable 5V signal for use in integrated circuits from the available VPP or VCC supplies for a wide range of VPP and VCC voltages. When VCC is greater than approximately 4V, the generator circuit generates the 5V signal directly from VCC. When VCC is less than approximately 4V and VPP is greater than approximately 4V but less than about 9V, the generator circuit generates the 5V signal directly from VPP. When VCC is less than approximately 4V and VPP is greater than approximately 9V, the generator produces the 5V signal at approximately half of the voltage level of the VPP signal. When both VCC and VPP are less than about 4V, the 5V signal is generated at the too-low VCC level.
REFERENCES:
patent: 4617473 (1986-10-01), Bingham
patent: 5272393 (1993-12-01), Horiguchi et al.
patent: 5483152 (1996-01-01), Hardee et al.
patent: 5663918 (1997-09-01), Javanifard et al.
Chan Julia Shau-Chang
Chang Chao-Hung
Song Paul Jei-Zen
Han Y. J.
Integrated Silicon Solution Inc.
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