Apparatus and method for digital control of a power converter cu

Details Apparatus and method for digital control of a power converter cu Apparatus and method for digital control of a power converter cu

1998-02-27

1999-10-19

Wong, Peter S.

Electricity: power supply or regulation systems

Output level responsive

Using a three or more terminal semiconductive device as the...

323285, 323351, G05F 140, G05B 2402

Patent

active

059695153

ABSTRACT:
A digital control circuit is used for controlling the load current of a power converter circuit (102), and comprises a reference circuit (302), analog comparator circuit (304), control logic circuit (306), and a counter circuit (308). The control logic circuit controls the operation of a power switch (110), and uses counters (314, 316) in conjunction with the analog comparator circuit and reference circuit, to determine when to open and close the power switch. The load current is allowed to vary between a first and second preselected load current levels.

REFERENCES:
patent: 5514947 (1996-05-01), Berg
patent: 5572113 (1996-11-01), Barrett
patent: 5675240 (1997-10-01), Fujisawa et al.
patent: 5734259 (1998-03-01), Sisson et al.
patent: 5754414 (1998-05-01), Hanington
patent: 5844399 (1998-12-01), Stuart
patent: 5844403 (1998-12-01), Sugimoto et al.

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