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다음과 같은 기능을 한번의 로그인으로 사용 할 수 있습니다.
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Kafe 바로가기국가/구분 | United States(US) Patent 등록 |
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국제특허분류(IPC7판) |
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출원번호 | UP-0602222 (2006-11-21) |
등록번호 | US-7605579 (2009-11-10) |
발명자 / 주소 |
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출원인 / 주소 |
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대리인 / 주소 |
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인용정보 | 피인용 횟수 : 7 인용 특허 : 553 |
The present invention is a method and apparatus for regulating current consumption and output current of a charge pump. According to some embodiments of the present invention, a first current coming into the charge pump and a second current coming into a driver of at least one of one or more stages
The present invention is a method and apparatus for regulating current consumption and output current of a charge pump. According to some embodiments of the present invention, a first current coming into the charge pump and a second current coming into a driver of at least one of one or more stages of the charge pump is measured. A control loop may regulate one or more parameters of the charge pump and/or a load connected to the charge pump, such as by adjusting one or more of: a supply voltage; a stage's voltage; the stage's frequency and/or duty-cycle; and the number of stages.
What is claimed is: 1. A method of operating a non-volatile memory device comprising: regulating a charge pump having one or more stages based on measuring current consumption (Icp_in) and output current (load current, Icp_out) of the charge pump (CP), wherein measuring includes: measuring a first
What is claimed is: 1. A method of operating a non-volatile memory device comprising: regulating a charge pump having one or more stages based on measuring current consumption (Icp_in) and output current (load current, Icp_out) of the charge pump (CP), wherein measuring includes: measuring a first current (I.sub.1) coming into the charge pump; and measuring a second current (I.sub.2) coming into a driver for at least one of the one or more stages of the charge pump. 2. The method of claim 1, further comprising: controlling current consumption and/or output current of the charge pump using a control loop affecting one or more parameters of the charge pump and/or a load connected to the charge pump. 3. The method of claim 1, further comprising: decreasing the current consumption (Icp_in) by adjusting one or more of: a. a supply voltage (Vsupply); b. a stage's voltage (V.phi.); c. the stage's frequency and/or duty-cycle; and d. the number (N) of stages. 4. The method of claim 1, further comprising: decreasing the current consumption (Icp_in) by adjusting a load connected to the output of the charge pump pipe. 5. The method of claim 1, further comprising: measuring the first current using a resistive path. 6. The method of claim 1, further comprising: comparing the first current to a first reference current. 7. The method of claim 5, further comprising: measuring the second current using a resistive path. 8. The method of claim 7, further comprising: comparing the second current to a second reference current. 9. The method of claim 8, further comprising: comparing the first current to a first reference current. 10. The method of claim 1, further comprising: providing a first measured voltage (Vmeas1) indicative of the first current (I.sub.1); providing a second measured voltage (Vmeas2) indicative of the second current (I.sub.2); providing a first supply voltage (Vsupply) to an input of the charge pump; providing a second supply voltage (V.phi.1) to a driver of the charge pump; providing a first reference voltage (Vref1) based on the first supply voltage (Vsupply); providing a second reference voltage (Vref2) based on the second supply voltage (V.phi.1); and selectively comparing the measured voltages to the reference voltages to control operation of the charge pump. 11. The method of claim 1, further comprising: wherein a load connected to the charge pump comprises non-volatile memory cells. 12. The method of claim 11, further comprising: implementing the charge pump on a same integrated circuit (IC) chip as the memory cells. 13. A method of controlling operation of a charge pump (CP) pipe having an input receiving a supply voltage (Vsupply), a number of stages, and an output (Vout, Iout), comprising: regulating the charge pump based on measuring current consumption (Icp_in) in the charge pump pipe and measuring a second current (I.sub.2) coming into a driver for at least one of the one or more stages of the charge pump; and decreasing the current consumption (Icp_in) by adjusting one or more of: a. a supply voltage (Vsupply); b. a stage's voltage (V.phi.); c. the stage's frequency and/or duty-cycle; d. the number (N) of stages; and e. adjusting a load connected to the output of the charge pump pipe. 14. A Non-Volatile Memory apparatus comprising: a control circuit for controlling operation of a charge pump (CP) pipe having an input receiving a supply voltage (Vsupply), a number of stages, and an output (Vout, Iout), said control circuit including means for measuring current consumption (Icp_in) in the charge pump pipe, and means for measuring a second current (I.sub.2) coming into a driver for at least one of the one or more stages of the charge pump, and means for decreasing or increasing the current consumption (Icp_in) by adjusting one or more of: a. a supply voltage (Vsupply); b. a stage's voltage (V.phi.); c. the stage's frequency and/or duty-cycle; d. the number (N) of stages; and e. adjusting a load connected to the output of the charge pump pipe. 15. The apparatus of claim 14, wherein: each stage comprises a switch (S) and a capacitor (C). 16. The apparatus of claim 14, wherein: the means for measuring current consumption (Icp_in) comprises: means for measuring a first current (I.sub.1) coming into the charge pump; and means for measuring a second current (I.sub.2) coming into a driver (drv1) for a given stage of the charge pump. 17. A non-volatile memory apparatus comprising: A control circuit for a charge pump (CP) pipe having an input receiving a supply voltage (Vsupply), a number (N) of stages, each stage having a driver (drv), and an output (Vout, Iout), said control circuit comprising: means for measuring a first current (I.sub.1) coming into the charge pump; and means measuring a second current (I.sub.2) coming into a driver for at least one of the one or more stages of the charge pump. 18. The apparatus of claim 17, further comprising: means for controlling the current consumption and/or output current of the charge pump using a control loop affecting one or more parameters of the charge pump and/or a load connected to the charge pump. 19. The apparatus of claim 17, further comprising: means for comparing the first current to a first reference current; and means for comparing the second current to a second reference current. 20. The apparatus of claim 17, further comprising: means for controlling the current consumption by adjusting one or more of: a. a supply voltage (Vsupply); b. a stage's voltage (V.phi.); c. the stage's frequency and/or duty-cycle; and d. the number (N) of stages; and e. a load connected to the output of the charge pump pipe.
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