The charge pump which is based supervision of the temperature which depends on the external condenser of the charge pump and on that and improves

摘要

The device (40), load (Cout and RL) the output section which is connected (41) the multi-stage charge pump which it possesses (10) it has. The charge pump (10), the charge pump (10) power supply voltage (V _dd) output voltage of approximately m time (V _out) the output section (41) the step condenser outside m (C) it has m profit steps which it charges and discharge and in order to occur. As for charge and discharge, influence causes the charge pump which is controlled switching frequency (f _osc) by the switching signal which it possesses (10) by the switch inside. The external standard condenser (C _ref) the supervisory circuit which watches the change which originates in the temperature of value (20) it provides. Furthermore, the charge pump which it occurs the step condenser outside m (C) with the change of value (10) in order to compensate the fluctuation of profit, switching frequency (f _osc) the expedient which is adjusted (30) it uses.