Switching power supply controller and switching power supply

Details Switching power supply controller and switching power supply Switching power supply controller and switching power supply

2006-07-11

2006-07-11

Berhane, Adolf (Department: 2838)

Electricity: power supply or regulation systems

Output level responsive

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

C323S284000

Reexamination Certificate

active

07075278

ABSTRACT:
A controller7A for generating a drive signal (PWM signal) PS for controlling a switching power supply, comprises control signal setting means10, 11for setting a control signal CS on the basis of an output voltage Vo and a target voltage Vr; current estimating means12for estimating an inductor current on the basis of the drive signal PS and for generating an estimated current signal PC; DC component removing means14, 15for extracting a DC component DC included in the estimated current signal PC and for removing the DC component DC from the estimated current signal PC; DC component resetting means13, 14for resetting the extracted DC component DC every predetermined time; and comparing means16for comparing the control signal CS with the estimated current signal PC′ after the removal of the DC component DC.

REFERENCES:
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patent: 6844710 (2005-01-01), Lipcsei et al.
patent: 6861826 (2005-03-01), Lynch
patent: 2000-116182 (2000-04-01), None
patent: 2002-530036 (2002-09-01), None
patent: A 2002-530036 (2002-09-01), None
patent: 2002-354787 (2002-12-01), None
patent: WO 00/26740 (2000-05-01), None

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