Boost driver circuit with fast discharging function

Details Boost driver circuit with fast discharging function Boost driver circuit with fast discharging function

2011-08-09

2011-08-09

Vu, David Hung (Department: 2821)

Electric lamp and discharge devices: systems

Periodic switch in the supply circuit

Impedance or current regulator in the supply circuit

C315S193000, C315S307000, C315S308000

Reexamination Certificate

active

07994728

ABSTRACT:
The present invention discloses a boost driver circuit which converts an input voltage to an output voltage and supplies it to a load, the boost driver circuit comprising: a power transistor electrically connected with a node between the input voltage and the output voltage; a pulse width modulation driver circuit for controlling the operation of the power transistor; an output node electrically connected with the output voltage; a feedback node electrically connected with the load; a low voltage transistor electrically connected with the feedback node; and a clamp and fast discharge circuit electrically connected with the feedback node for discharging the feedback node when the voltage at the feedback node is higher than a predetermined voltage.

REFERENCES:
patent: 6864641 (2005-03-01), Dygert
patent: 7423389 (2008-09-01), Lee
patent: 7609237 (2009-10-01), Ragonesi et al.

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