# charge pump efficiency equation

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• ### Calculating Essential Charge-Pump Parameters |

2006-7-1 · Finally, we calculate the charge-pump circuit's efficiency. By definition, efficiency equals power delivered to the output divided by power consumed at the input. Since we have a device that is switching and whose voltage waveforms vary with time, we are interested in the ratio of the average power at input and output, as opposed to the ratio of instantaneous powers.

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• ### Pump Efficiency - an overview | ScienceDirect Topics

The equation for calculating the pump efficiency is expressed as follows: (5-42) EFF = ( 80 − 0.2855 H + 3.78 × 10 − 4 H Q − 2.38 × 10 − 7 H Q 2 + 5.39 × 10 − 4 H 2 − 6.39 × 10 − 7 H 2 Q + 4 × 10 − 10 H 2 Q 2 ) ( 1 100 )

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• ### charge pump - power efficiency's definition -

2021-2-6 · To go back to your equation. The input power (what goes in) is equal to the output power (what goes out) plus the imperfection of the system (what is lost). P_{in} = P_{out} + P_{loss} You merely change P_{in} in your first equation (\frac{P_{out}}{P_{in}}) to get your second equation.

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• ### Clever Circuit Improves Efficiency of Charge Pump

2020-8-17 · Divide-By-2 Inverting Charge Pump Circuit. Positive Supply: 15V linear regulated to 5V = 33% efficient; Negative Supply: 15V inverted and divided by 2; V OUT = 6.25V. In Case 2, the charge pump is slightly less efficient due to the Schottky diodes, but the linear regulator efficiency increases to approximately 80%, greatly increasing overall efficiency.

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• ### efficiency - Can a charge-pump be 100% efficient,

2021-4-6 · An inductor-less charge pump made with ideal components may be 100% efficient if the source current and voltage waveforms have the proper relationship with the load current and voltage waveforms. It is possible for either the source or the load voltage to be constant DC, but not both (except in the trivial case where both voltages are the same and the charge pump …

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• ### Discrete Charge Pump Design - Texas Instruments

2011-8-6 · cycle for the switch node can be found using Equation 1. (1) Where: h= converter efficiency at a specified load The duty cycle is important in the charge pump application because it places different charge times on the flying and storage capacitors. Additionally, the duty cycle increases with lower efficiency values. 2 Charge Pump Doubler Circuit

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• ### Charge Pump Circuits - an overview | ScienceDirect

Hence, if the output voltage of the charge pump V o is equal to MV DD, 100% power efficiency can be achieved. However, current drawn from the supply is not always delivered to the load. However, current drawn from the supply is not always delivered to the load.

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• ### What is a charge pump and why is it useful? (Part 1)

2017-3-31 · Charge pump efficiency is fairly high, in the range of 90 to 95%. Part 2 looks at some additional aspect of charge pumps, including their capacitors, non-doubling variations, internal and external clocks, filtering and regulation, and embedded charge pumps.

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• ### Design of Charge Pump Circuit in Low-Voltage CMOS

2013-4-25 · Charge pump circuits can generate the voltage higher than the normal power supply voltage (VDD) or lower than the ground voltage (GND) in a chip, which were usually used to write or erase data in the nonvolatile memory. Moreover, charge pump circuits are also used in power management blocks and the driver ICs for

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• ### SECTION 4 SWITCHED CAPACITOR VOLTAGE

2019-5-10 · of current flows, and the charge is redistributed. The total charge on the parallel combination of the two capacitors is qT = C1·V1 + C2·V2. This charge is distributed between the two capacitors, so the new voltage, VT, across the parallel combination is equal to qT/(C1 + C2), or VT qT C C C V C V C C C C C V C C C = V + = ⋅ + ⋅ + = + + +

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• ### TC1240/TC1240A

2012-11-29 · EQUATION 5.2 Charge Pump Efficiency The overall power efficiency of the charge pump is affected by four factors: 1. Losses from power consumed by the internal oscillator, switch drive, etc. (which vary with input voltage, temperature and oscillator frequency). 2. I2R losses due to the on-resistance of the MOSFET switches on-board the charge ...

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• ### Calculating Essential Charge-Pump Parameters |

2006-7-1 · Finally, charge-pump efficiency is an important consideration. An increase of R1 causes efficiency to go down almost the same way as the output voltage. For relatively high switching frequencies, it can be shown that charge-pump efficiency is identical to that of an LDO (i.e., it equals the ratio of output voltage to input voltage). Many other ...

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• ### Efficiency of Innovative Charge Pump versus Clock ...

2016-10-20 · MOSFETs sizes and theirs influence to efficiency and the output voltage. Complex optimization of the charge pump circuit will follow in further text. Keywords: 2-phase Charge Pump, non-volatile memory, efficiency, switch size determination. 1. INTRODUCTION. The Dickson Charge Pump (DCP)  belongs to well-known charge pump architectures.

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• ### Power Efficiency Optimization of Fully Integrated Dickson ...

2010-5-21 · The power efficiency can then be calculated by evaluating the following equation: intot I cc V out I out V, ⋅ ⋅ η= If the number of charge pump stages n is large enough, meaning that n + 1 n, the expression for the power efficiency becomes: out I cc f C V cc f CV out I cc V T V ⋅ ⋅ ⋅ + ⋅ ⋅ − − ≅ α η 1 1

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• ### What is a charge pump and why is it useful? (Part 1)

2017-3-31 · Charge pump efficiency is fairly high, in the range of 90 to 95%. Part 2 looks at some additional aspect of charge pumps, including their capacitors, non-doubling variations, internal and external clocks, filtering and regulation, and embedded charge pumps.

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• ### (PDF) Improving the efficiency of mixed-structure

The various charge pump topologies and schemes used are considered based on pumping efficiency, power efficiency, charge transferability, circuit complexity, pumping capacitors, form factor and ...

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• ### Switched Capacitor Voltage Converters

2010-8-13 · The overall power efficiency of the charge pump is affected by four factors: 1. Losses from power consumed by the internal oscillator, switch drive, etc. (which vary with input voltage, temperature and oscillator frequency). 2. I2R losses due to the on-resistance of the MOSFET switches on-board the charge pump. 3. Charge pump capacitor losses ...

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• ### NCP1729 - Switched Capacitor Voltage Inverter

light loads, and drops according to the equation below: VDROP Iout Rout Vout (Vin VDROP) Charge Pump Efficiency The overall power conversion efficiency of the charge pump is affected by four factors: 1. Losses from power consumed by the internal oscillator, switch drive, etc. (which vary with input voltage, temperature and oscillator frequency). 2.

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• ### Guide to Integrated Charge Pump DC-DC Conversion

2021-5-16 · Regulated-Charge-Pump Design Idea An improved design for maintaining a switching frequency that is constant and independent of the input voltage is shown in Figure 4. Figure 4. This regulated charge pump maintains a constant switching frequency. The IC's internal switching frequency is controlled with current into its shutdown pin.

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• ### Electronics | Free Full-Text | Design of a Charge Pump ...

This paper describes a charge pump system for a flexible thermoelectric generator (TEG). Even though the TEG has high-output impedance, the system controls the input voltage to keep it higher than the minimum operating voltage by modulating the input impedance of the charge pump using two-phase operation with low- and high-input impedance modes. The average input impedance can be matched …

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• ### Pump Efficiency - an overview | ScienceDirect Topics

In this equation • the pump efficiency depends on the pump flow rate Q pump (which is equal to the demanded flow rate) and in the case of variable speed operation on the rotational speed n (see Sections 4.2 and 5.2 Section 4.2 Section 5.2). in the case of a grid-fed motor the drive efficiency η drive is equal to the motor efficiency η motor and depends on the mechanical power P mech (see ...

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• ### efficiency - Can a charge-pump be 100% efficient,

2021-4-6 · In our charge pump there is not infinite charging/discharging time so resistance does affect efficiency but as resistance tends to zero efficiency (for a finite voltage difference) tends towards a finite number less than 100%. The charge transferred on each switching cycle is related to the change in voltage on the capacitor by the capacitance.

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• ### Modelling of maximum power efficiency of charge

2014-8-1 · The loss estimation in a switched‐capacitor DC–DC converter has caused much controversy because of the uncertainty of the contribution of device parasitics to the power efficiency of a …

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• ### Power Efficiency Optimization of Fully Integrated Dickson ...

2010-5-21 · The power efficiency can then be calculated by evaluating the following equation: intot I cc V out I out V, ⋅ ⋅ η= If the number of charge pump stages n is large enough, meaning that n + 1 n, the expression for the power efficiency becomes: out I cc f C V cc f CV out I cc V T V ⋅ ⋅ ⋅ + ⋅ ⋅ − − ≅ α η 1 1

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• ### Obsolete Device TC1221/TC1222 - Microchip Technology

2014-3-25 · to the equation below: VDROP = IOUT x ROUT VOUT = – (VIN – VDROP) 4.2 Charge Pump Efficiency The overall power efficiency of the charge pump is affected by four factors: 1. Losses from power consumed by the internal oscillator, switch drive, etc. (which vary with input voltage, temperature and oscillator frequency). 2.

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• ### Fully Integrated Dickson Charge Pumps with Optimized

2010-9-8 · charge the parasitic capacitance Cp in each stage. The parameter α is the ratio of the parasitic capacitance Cp to the nominal capacitor value C: C p C The power efficiency can then be calculated by evaluating the following equation: in tot I cc V out I out V, If the number of charge pump …

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• ### How To Calculate Hydraulic Pump and Motor

2015-2-2 · Overall efficiency is simply the product of volumetric and mechanical/hydraulic efficiency. So continuing with the above example, the overall efficiency of the pump is 0.9 x 0.91 x 100 = 82%. Overall efficiency is used to calculate the drive power required by a pump at a given flow and pressure.

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• ### es Pump Efficiency Solutions - Cal Poly

2018-4-28 · Pump Efficiency Solutions 4 keep each pump closest to its best efficiency point thus lowering the input power to each pump. The outputs of the program are simply the number of pumps that should be operating the pumps frequency. The program must be flexible enough to allow for process variation due to different pump

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• ### Efficiency Electrolysis - Siemens

2021-4-16 · The efficiency of the electrolysis systems is critical both technically and ... thereby reducing voltage efficiency in accordance with Equation 8. ... distance the charge carriers have to traverse between the anode and the cathode, the smaller the voltage drop is,

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• ### Switched Capacitor Voltage Converters

2016-11-1 · The overall power efficiency of the charge pump is affected by four factors: 1. Losses from power consumed by the internal oscillator, switch drive, etc. (which vary with input voltage, temperature and oscillator frequency). 2. I2R losses due to the on-resistance of the MOSFET switches on-board the charge pump. 3. Charge pump capacitor losses ...

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• ### TC1240/TC1240A

2012-11-29 · EQUATION 5.2 Charge Pump Efficiency The overall power efficiency of the charge pump is affected by four factors: 1. Losses from power consumed by the internal oscillator, switch drive, etc. (which vary with input voltage, temperature and oscillator frequency). 2. I2R losses due to the on-resistance of the MOSFET switches on-board the charge ...

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• ### Pump Efficiency - an overview | ScienceDirect Topics

The equation was based on pump efficiency curves of the Natural gas transmitting pipeline safety act (NGPSA) Engineering Data Book. These efficiency curves give good results with the vendor data (the range of developed heads, 50–300 ft, and the flow rates, 100–1000 gpm). The equation for calculating the pump efficiency is expressed as follows:

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• ### Obsolete Device TC1221/TC1222 - Microchip Technology

2014-3-25 · to the equation below: VDROP = IOUT x ROUT VOUT = – (VIN – VDROP) 4.2 Charge Pump Efficiency The overall power efficiency of the charge pump is affected by four factors: 1. Losses from power consumed by the internal oscillator, switch drive, etc. (which vary with input voltage, temperature and oscillator frequency). 2.

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• ### High Efficiency 1X/1.5X Fra ctional Charge Pump for

2019-2-14 · The AAT3131 is a low noise, constant frequency charge pump DC/DC converter that uses a dual mode load switch (1X) and fractional (1.5X) conversion to maximize efficiency for white LED applications. The device can be used to produce current levels up to 20mA in three of its outputs and 30mA in one of its outputs to drive LEDs

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• ### Efficiency Electrolysis - Siemens

2021-4-16 · The efficiency of the electrolysis systems is critical both technically and ... thereby reducing voltage efficiency in accordance with Equation 8. ... distance the charge carriers have to traverse between the anode and the cathode, the smaller the voltage drop is,

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• ### Design of Charge Pump Circuit in Low-Voltage CMOS

2013-4-25 · charge pump circuit. However, the thick gate-oxide NMOS often has a high threshold voltage which somehow degraded the pumping efficiency. Due to the fact that the CMOS technology is continuously scaled down, some modified charge pump circuits - based on Dickson charge pump circuit were invented to eliminate the body effect, to overcome

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• ### An Analysis of Output Ripples for PMOS Charge Pumps

2013-7-5 · the two-stage PMOS charge pump was performed using the 0.35 m CMOS process with the nominal conditions of W/L = 10, an output current IO = 20 A, a supply voltage of 1.8 V, and a clock period T = 100 ns. Figure 4. Microphotograph of the 2-stage PMOS charge pump Figure 6 shows the agreement of the output voltages obtained from Eq.

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• ### A robust high-efficiency cross-coupled charge pump

the charge pump eliminates all of the reversion power loss and reduces the ripple voltage. The proposed charge pump has a better performance even in scenarios where the main clock signals are mismatched. The proposed charge pump circuit was simulated using spectre in the TSMC 0.18 lm CMOS process.

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• ### HIGH EFFICIENCY NEGATIVE REGULATED CHARGE

2011-5-11 · The high efficiency regulated negative charge-pump 78 includes a P-FET MP3, a P-FET MP4, an N-FET MN3, an NFET MN4, an NFET MN5 and an NFET MN6. The high efficiency regulated negative charge-pump 78 also includes flying capacitors CF3, CF4, CF5 and CF6.

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• ### Getting the Most Efficiency Out of Hydraulics |

2020-3-9 · Piston pump—closed loop: In a closed loop pump system, a charge-pump feeds the oil into the hydraulic pump rather than gravity. Closed-loop systems are used in mobile equipment because the charge pressure prevents efficiency losses caused by not having enough oil coming into the pump.

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• ### Modelling of maximum power efficiency of charge

2014-8-1 · The loss estimation in a switched‐capacitor DC–DC converter has caused much controversy because of the uncertainty of the contribution of device parasitics to the power efficiency of a …

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• ### Algorithm for Automatic Design of Maximum-Efficiency ...

2003-5-28 · From the above equation, it can be seen that, for any given value of the charge pump parameters (number of stages and, hence, open-circuit output voltage, operating frequency, and capacitor and transistor sizes), power efficiency is a function of IOUT (more specifically, η has a maximum for an output current

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• ### How To Calculate Hydraulic Pump and Motor

2015-2-2 · Overall efficiency is simply the product of volumetric and mechanical/hydraulic efficiency. So continuing with the above example, the overall efficiency of the pump is 0.9 x 0.91 x 100 = 82%. Overall efficiency is used to calculate the drive power required by a pump at a given flow and pressure.

Get Price
• ### es Pump Efficiency Solutions - Cal Poly

2018-4-28 · Pump Efficiency Solutions 4 keep each pump closest to its best efficiency point thus lowering the input power to each pump. The outputs of the program are simply the number of pumps that should be operating the pumps frequency. The program must be flexible enough to allow for process variation due to different pump

Get Price
• ### Efficiency Electrolysis - Siemens

2021-4-16 · The efficiency of the electrolysis systems is critical both technically and ... thereby reducing voltage efficiency in accordance with Equation 8. ... distance the charge carriers have to traverse between the anode and the cathode, the smaller the voltage drop is,

Get Price
• ### Pump power calculations - sample problem -

Pump shaft power requirement = Theoretical power requirement pump efficiency. For a pump that has been already purchased or has been ordered for manufacturing, the efficiency can be determined using the pump performance curves provided by pump manufacturer. Here the problem statement has specified pump efficiency to be 70%.

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• ### White LED Driver with 1X /1.5X High-Efficiency Charge

2012-10-11 · High-Efficiency Charge Pump DESCRIPTION The EUP2794 is a low noise, constant frequency charge pump that uses a dual mode load switch (1X) and fractional (1.5X) conversion to maximize efficiency for white LED applications. The EUP2794 delivers up …

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• ### Build a Charge Pump with Ultra-Low Quiescent Current

2012-8-22 · A basic regulated charge pump (Figure 1) includes an oscillator, several analog switches, a voltage reference, and a comparator. The comparator serves as a voltage monitor and oscillator. When the circuit is in regulation the comparator output is low, which closes the NC switches and allows C1 to charge to VBATT.

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• ### Well-to-Wheel Efficiency Analysis

2011-6-3 · Efficiency Well Charge Tank Fuel Tank Fuel tank at vehicle Wheel Automotive Data WG Data Evaluation WG Analysis of demonstration data Review of published demonstrated data (FY 2003 ~) Data reviewed by JEVA study (~ FY 2002) Demonstrated data are used if they are to be in public domain

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• ### DETERMINING WELL EFFICIENCY BY MULTIPLE STEP

2015-1-15 · and the value of C is the slope of the line. The equation su.IQ = 0.012 + 0.00012Q was determined from which .?«,- = 0.012Q I 0.00012ß2 which is the form of Jacob's equation (l) and is the approximate equation for the drawdown in Well NAU-3 for a pumping period of two hours. Figure 4 shows a plot of this equation and the observed

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