Electric power conversion systems – Current conversion – With means to introduce or eliminate frequency components
Patent
1996-09-04
1998-05-12
Hecker, Stuart N.
Electric power conversion systems
Current conversion
With means to introduce or eliminate frequency components
363 97, 363 98, 363 21, H02M 700, H02M 3335
Patent
active
057515654
ABSTRACT:
With a switching converter that delivers power to a load at a regulated load voltage based upon switch control pulses from a pulse width modulator (PWM), a circuit monitors directly the level of the load voltage and, when it rises to an upper threshold, the circuit generates a feedback signal for the PWM that interrupts its generation of switch control pulses until the load voltage drops to a lower threshold voltage. When the load voltage has dropped to the lower threshold voltage and until it rises to the upper threshold voltage, the circuit generates a feedback signal for the PWM to cause it to produce switch control pulses of a maximum-power pulse width. The circuit may be enabled only in low load conditions and used in connection with the powering of personal computers.
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patent: 5077652 (1991-12-01), Faley
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patent: 5499184 (1996-03-01), Squibb
Locascio et al., "A new PWM controller IC for battery powered systems," in Technical Papers of the Eighth International High Frequency Power Conversion Conference pp. 81-93 (1993).
Jeffrey H. Hwang, Micro Linear Corporation, "ML482X: Green Mode Power Conservation," presented Jun. 29, 1994, at Compaq Computer Corporation facilities in Houston, Texas (15 viewgraphs).
K. Kit Sum, Switch Mode Power Conversion: Basic Theory and Design, Marrel Dekker, Inc., New York, New York 1984, pp. 1-17.
Compaq Computer Corporation
Hecker Stuart N.
Patel Rajnikant B.
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