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The power efficiency and performance of fully integrated charge pumps are highly dependent on the types of capacitors used in the pumping stages. A sample but not so well-known circuit technique that can minimize power losses is charge recycling applied to the parasitic capacitors always allocated with the useful capacitors at the core of every pumping stage. This paper discusses the possibility of...
The proposed circuit uses a Dickson-type charge pump core with adaptive control of the supply voltage in order to improve the power efficiency. The battery referred “floating ground” used for supplying the charge pump core is implemented using a shunt voltage regulator instead of the more traditional series voltage regulator in an effort to control the radiated emissions of the circuit.
The proposed circuit is a dual-chain Dickson type charge pump making use of both active and passive charge transfer switches in order to achieve a compromise between power efficiency, circuit complexity and device reliability. The charge pump is capable of sourcing up to 500μA at 10V output voltage for supplying the error amplifiers of two NMOS Low Drop Out (LDO) linear regulators as part of a high...
The proposed circuit is a dual pumping chain Dickson-type charge pump using both active and passive charge transfer switches and adaptive control of the clock amplitude in order to improve the power efficiency. The circuit is sourcing up to 500μA at 5V–6.5V above the battery voltage as part of a high side driver [5] and uses a battery related “floating ground” regulator to deliver the supply voltage...
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