Buck converter with transient suppression

Details Buck converter with transient suppression Buck converter with transient suppression

2005-04-12

2005-04-12

Berhane, Adolf (Department: 2838)

Electricity: power supply or regulation systems

Output level responsive

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

C327S530000

Reexamination Certificate

active

06879138

ABSTRACT:
A buck converter is disclosed which prevents a voltage drop below a desired voltage when a load change occurs. The buck converter generates an override signal to turn on one or more switch devices in the circuitry. The effect of the override signal is to provide a sudden increase in the current supplied to a load, preventing the output voltage from dropping below the predetermined level. Sensing circuitry within the buck converter detects a voltage drop at the load, causing the override signal to be generated. The override signal may be a continuous signal or a one-shot pulse. Additional current sensing circuitry and the switch history of the buck converter determines the duration of the override signal for one embodiment and the number of switches activated within the buck converter.

REFERENCES:
patent: 6246222 (2001-06-01), Nilles et al.
patent: 6563294 (2003-05-01), Duffy et al.
patent: 6670794 (2003-12-01), Wang et al.
patent: 6696882 (2004-02-01), Markowski et al.

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