Patent ID: 8330516
Filing Date: 2012-12-11
Classification: G05F

Abstract:
1. A start circuit, adapted to start a reference circuit, and the start circuit comprising: a current source, electrically connected to a plurality of bias nodes within the reference circuit, and for determining whether or not to generate an internal current according to a plurality of bias voltages on the plurality of bias nodes; a current mirror, for duplicating the internal current to produce a mirrored current; a load device, for adjusting a control voltage according to the mirrored current; and a control device, for determining whether or not to generate a start voltage according to the control voltage, and transmitting the start voltage to one of the plurality of bias nodes, so as to break the reference circuit away from a zero-current state, wherein the control device comprises: a first N-channel transistor, having a drain electrically connected to the one of the plurality of bias nodes, a gate electrically connected to the current mirror and the load device, and a source electrically connected to a ground voltage.