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Charge pump regulation

A technology of charge pump and signal adjustment, which is applied in the field of charge pump circuit system and control charge pump to achieve the effect of improving performance

Active Publication Date: 2017-06-13
NXP BV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Each of these operations consumes some electrical power

Method used

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Embodiment Construction

[0034] Charge pump circuits are suitable for any charge pump application. It can be used in applications where the ripple or noise is low or area dependent. For example, it can be used in boosting systems, level shifters and energy harvesting or charge pump rectifiers.

[0035] refer to figure 1 , figure 1 A schematic block diagram of an electronic device 100 including a charge pump circuit is shown. By way of example only, and for purposes of clarity of explanation, the charge pump circuit will be described within the context of the electronic device 100 being an RFID tag. It should be understood, however, that the charge pump circuit is not limited to application to RFID tags, and may be used in a wide range of applications as discussed above. In addition to RFID tags, charge pump circuits can be used in electronic devices of other tagging technologies, eg in NFC (Near Field Communication) tags.

[0036] Such as figure 1 As shown, RFID tag 100 may include antenna 102, ...

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Abstract

A regulated charge pump circuit and method of operation are described. A charge pump is configured to supply an output voltage to a load, and includes at least one charge pump stage, a charge pump driver arranged to drive the charge pump stages and a controllable current source connected between a supply voltage and the charge pump driver. An analog regulation loop includes a measurement circuit arranged to output an analog regulation signal indicative of a difference between a current value of the output voltage and a target value of the output voltage. A signal path is connected to the charge pump to supply the analog regulation signal to the controllable current source to operate the controllable current source to modulate the supply voltage that can be provided to the charge pump driver to regulate the output voltage.

Description

technical field [0001] The present specification relates to charge pumping, and in particular to charge pump circuitry including control circuitry and methods of controlling charge pumping. Background technique [0002] A charge pump is an electronic circuit that can be used to convert DC voltage. One or more capacitors may be used to convert the input DC voltage to either a higher DC voltage or a lower DC voltage. A switch is generally used to switch between applying a voltage to a capacitor to charge the capacitor, and then discharging the capacitor to supply the converted voltage to some load. Control or regulation circuitry may be used to control or regulate the converted DC voltage supplied by the charge pump. [0003] Charge pumps have a wide range of applications. One field of application of charge pumps is in connection with non-volatile memory devices such as, by way of non-limiting examples, EEPROM (Electrically Erasable and Programmable Read-Only Memory) or fla...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02M3/07
CPCH02M3/07G11C5/145H02M1/0003
Inventor 伊万·杰西·里波罗皮门特尔
Owner NXP BV