| 摘要 |
<p>This invention relates to a bias current control circuit which drives a power MOS transistor. Since the power MOS transistor has a large capacitance which is formed between a gate and a channel, it is needed to provide a circuit which is able to sufficiently supply a drive current to the gate. Such a circuit increases a consumption current because the circuit has to always flow the current to drive the gate. This invention provides a circuit which cut the consumption current in the circuit when the transistor is not driven, and increases a consumption current in the circuit in order to keep a gate current when the transistor is driven. <IMAGE></p> |
