charge pump


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charge pump

An electronic circuit that uses capacitors in series to increase the DC source voltage when needed. For example, in EEPROM and flash memory chips, charge pumps create a higher voltage to erase the floating gates before rewriting them. See voltage multiplier.


A Voltage Doubler Pump
These circuit diagrams show how switches S1 and S2 flip the voltage to the positive side of capacitor C1 to charge it to 5v and then to the negative side to multiply the voltage to 10v. The charge at C2 is available to another circuit (Vout) or to a resistance load (RL). If more voltage were required, the output of C2 would go to a third capacitor and so on. The switches are actually transistors, but the circuit symbols for the transistors are simplified in this diagram.
References in periodicals archive ?
Tenders are invited for Supply Of Spares For Clinker Grinder, Ash Slurry Pump And Charge Pump Installed At Ahp Of, 2X500 Mw, Abvtps, Cspgcl, Janjgir-Champa.
The presented method was implemented for a Dickson charge pump circuit constructed with CMOS technology for which production process errors were considered (incipient faults).
It includes a phase-locked-loop (PLL) core, consisting of a reference divider, phase-frequency detector (PFD) with a phase-lock indicator, ultralow noise charge pump and integer feedback divider.
* An integral charge pump allows the D1 pump to run at speeds up to 2500rpm
The multi feedback ring oscillator is generate available clock phase for the charge pump circuit.
Often charge pump or bootstrap circuits have been considered as the best choice for the gate drive power supplies [2].
The plant's gasification availability decreased last December to 29.34%, he said, due to issues with the slurry charge pump on unit 2 and air separation unit.
The fire at the 335,000 barrel-per-day refinery occurred on a charge pump in the larger Girard Point half of the plant, the company said in a statement.
The basic configuration of a Dickson charge pump [1] is shown in Figure 1.
The product offers the following features: power supply range of 1.8V-3.6V; low current consumption and stand-by current; noise-free, 16-bit output signal; integrated charge pump for programming internal memory; fully-corrected digital output signal; PSR of up to 90dB; operating temperature range of -40[degree sign]C to +110[degree sign]C; and ESD performance of up to 4kV.
The quad-mode charge pump supports a wide range of input voltages from 2.0 V to 5.5 V and also helps the CAT3661 achieve peak efficiency levels of up to 92 percent - up to 10 percent higher than traditional high efficiency 1.5x tri-mode charge pumps.
2003 An analysis and performance evaluation of a passive filter design technique for charge pump phase-locked loops application note 1001, National Semiconductor.