Power converter, short detection circuit thereof, and method...

Details Power converter, short detection circuit thereof, and method... Power converter, short detection circuit thereof, and method...

2008-10-08

2011-11-08

Patel, Dharti (Department: 2836)

Electricity: electrical systems and devices

Safety and protection of systems and devices

With specific current responsive fault sensor

C361S093700

Reexamination Certificate

active

08054603

ABSTRACT:
A short detection circuit, for detecting an output node corresponding to an output voltage converted from an input voltage of a power converter, includes a first current source, a charging/discharging unit, a comparator, and a logic control unit. The charging/discharging unit performs charging operation in accordance with the first current source to generate a charging signal in a shorted condition of the output node. The comparator outputs an enable signal by comparing the charging signal with a reference signal. The logic control unit is controlled by the enable signal to generate a fault signal for turning off a first switch coupled between the output node and the input voltage in the shorted condition of the output node. A method for detecting short of an output node corresponding to an output voltage converted from an input voltage of a power converter is also disclosed herein.

REFERENCES:
patent: 7773350 (2010-08-01), Balakrishnan et al.

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