CN115360905A - 一种基于非交叠时钟控制的低功耗电荷泵电路 - Google Patents

一种基于非交叠时钟控制的低功耗电荷泵电路 Download PDF

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CN115360905A
CN115360905A CN202211001813.3A CN202211001813A CN115360905A CN 115360905 A CN115360905 A CN 115360905A CN 202211001813 A CN202211001813 A CN 202211001813A CN 115360905 A CN115360905 A CN 115360905A
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control clock
clock
control
switching tube
capacitor
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田泽
吕俊盛
刘敏侠
邵刚
权炜
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Xian Xiangteng Microelectronics Technology Co Ltd
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Xian Xiangteng Microelectronics Technology Co Ltd
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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M3/00—Conversion of dc power input into dc power output
    • H02M3/02—Conversion of dc power input into dc power output without intermediate conversion into ac
    • H02M3/04—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters
    • H02M3/06—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using resistors or capacitors, e.g. potential divider
    • H02M3/07—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using resistors or capacitors, e.g. potential divider using capacitors charged and discharged alternately by semiconductor devices with control electrode, e.g. charge pumps
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M1/00—Details of apparatus for conversion
    • H02M1/0003—Details of control, feedback or regulation circuits
    • H02M1/0032—Control circuits allowing low power mode operation, e.g. in standby mode
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M1/00—Details of apparatus for conversion
    • H02M1/0048—Circuits or arrangements for reducing losses
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M1/00—Details of apparatus for conversion
    • H02M1/08—Circuits specially adapted for the generation of control voltages for semiconductor devices incorporated in static converters
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M1/00—Details of apparatus for conversion
    • H02M1/08—Circuits specially adapted for the generation of control voltages for semiconductor devices incorporated in static converters
    • H02M1/088—Circuits specially adapted for the generation of control voltages for semiconductor devices incorporated in static converters for the simultaneous control of series or parallel connected semiconductor devices
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
    • Y02B70/10—Technologies improving the efficiency by using switched-mode power supplies [SMPS], i.e. efficient power electronics conversion e.g. power factor correction or reduction of losses in power supplies or efficient standby modes

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Dc-Dc Converters (AREA)

Abstract

本发明涉及一种基于非交叠时钟控制的低功耗电荷泵电路。本发明包括NMOS开关管N1、PMOS开关管P1、PMOS开关管P2、PMOS开关管P3、电容C1、控制时钟CLK1、控制时钟CIK2、控制时钟CLK3、控制时钟CIK4和比较器，PMOS开关管P1和PMOS开关管P2的源极接电源vdd，漏极接电容C1，栅极分别接控制时钟CLK3和控制时钟CIK1，PMOS开关管P3的栅极接控制时钟CLK4，源极接电容C1，漏极接分压电阻R1和R2，并输出所需电压，NMOS开关管N1的栅极接控制时钟CLK2，漏极接电容C1，源极接地，分压电阻R1和R2之间接一个比较器。本发明利用比较器进行具有自我调节功能charge pump结构，节省功耗，提升转换效率。

Description

一种基于非交叠时钟控制的低功耗电荷泵电路
技术领域
本发明属于电路领域，尤其涉及一种基于非交叠时钟控制的低功耗电荷泵电路。
背景技术
电荷泵(charge pump)是一种利用所谓的“快速”或“泵送”电容来储能的DC-DC变换器，它能够使输入电压升高或降低，也可用于负电压的产生，其内部的FET开关阵列以一定的时序控制电容的快速充电和放电，从而获得一定因数的输出电压。
传统的charge pump结构普遍存在功耗较高效率较低的问题。
发明内容
为解决背景技术中存在的技术问题，本发明提供一种基于非交叠时钟控制的低功耗电荷泵电路，利用比较器进行具有自我调节功能charge pump结构，节省功耗，提升转换效率。
本发明的技术解决方案是：本发明为一种基于非交叠时钟控制的低功耗电荷泵电路，其特殊之处在于：所述电路包括NMOS开关管N1、PMOS开关管P1、PMOS开关管P2、PMOS开关管P3、电容C1、控制时钟CLK1、控制时钟CIK2、控制时钟CLK3、控制时钟CIK4和比较器，PMOS开关管P1和PMOS开关管P2的源极接电源vdd，漏极接电容C1，栅极分别接控制时钟CLK3和控制时钟CIK1，PMOS开关管P3的栅极接控制时钟CLK4，源极接电容C1，漏极接分压电阻R1和R2，并输出所需电压，NMOS开关管N1的栅极接控制时钟CLK2，漏极接电容C1，源极接地，分压电阻R1和R2之间接一个比较器。
进一步的，控制时钟CLK1、控制时钟CIK2、控制时钟CLK3和控制时钟CIK4分别控制PMOS开关管P2、NMOS开关管N1、PMOS开关管P1和PMOS开关管P3的开启和关断，控制时钟CLK1与其它三个时钟：控制时钟CLK2、控制时钟CLK3以及控制时钟CLK4状态相反。
进一步的，比较器接时钟产生电路。
进一步的，时钟产生电路分别接控制时钟CLK1、控制时钟CIK2、控制时钟CLK3和控制时钟CIK4。
进一步的，电源vdd为3.3V电源。
本发明提供的基于非交叠时钟控制的低功耗电荷泵电路，相较于传统的chargepum结构，本发明通过一种负反馈调节机制，其电路工作原理为：控制时钟CLK1、控制时钟CLK2、控制时钟CLK3和控制时钟CLK4分别控制PMOS开关管P2、NMOS开关管N1、PMOS开关管P1和PMOS开关管P3的开启和关断。当NMOS开关管N1和PMOS开关管P2打开时，PMOS开关管P1和PMOS开关管P3关闭，电源vdd为电容C1充电；当PMOS开关管P1和PMOS开关管P3打开时，NMOS开关管N1和PMOS开关管P2，电容C1和电源vdd相叠加，在Vout处输出一个理论可达6.6V的电压，然后经过分压电阻R1、R2分压得到想要的电压。当输出电压大于所需电压时，比较器会输出一个高电平，经由后级的时钟产生电路控制，使得PMOS开关管P2和NMOS开关管N1处于常关状态。当输出电压小于所需电压时，比较器会输出一个低电平，经由后级的时钟产生电路控制，使得可以PMOS开关管P2和NMOS开关管N1处于开启状态，为电容C1充电。因此本发明有效降低了电路功耗,提高了电源转换效率。
附图说明
图1为本发明的电路图。
具体实施方式
下面结合附图和具体实施例对本发明的技术方案做进一步详细描述。
参见图1，本发明具体实施例的电路结构包括NMOS开关管N1、PMOS开关管P1、PMOS开关管P2、PMOS开关管P3、电容C1、控制时钟CLK1、控制时钟CIK2、控制时钟CLK3、控制时钟CIK4和比较器，PMOS开关管P1和PMOS开关管P2的源极接电源vdd，漏极接电容C1，栅极分别接控制时钟CLK3和控制时钟CIK1，PMOS开关管P3的栅极接控制时钟CLK4，源极接电容C1，漏极接分压电阻R1和R2，并输出所需电压，NMOS开关管N1的栅极接控制时钟CLK2，漏极接电容C1，源极接地，分压电阻R1和R2之间接一个比较器，比较器接时钟产生电路，时钟产生电路分别接控制时钟CLK1、控制时钟CIK2、控制时钟CLK3和控制时钟CIK4，分别控制PMOS开关管P2、NMOS开关管N1、PMOS开关管P1和PMOS开关管P3的开启和关断。控制时钟CLK1与其它三个时钟：控制时钟CLK2、控制时钟CLK3以及控制时钟CLK4状态相反，其中：电源vdd为3.3V电源，时钟产生电路为现有的电路结构。
本发明的电路工作原理如下：
控制时钟CLK1、控制时钟CLK2、控制时钟CLK3和控制时钟CLK4分别控制PMOS开关管P2、NMOS开关管N1、PMOS开关管P1和PMOS开关管P3的开启和关断，当NMOS开关管N1和PMOS开关管P2打开时，PMOS开关管P1和PMOS开关管P3关闭，电源vdd为电容C1充电；当PMOS开关管P1和PMOS开关管P3打开时，NMOS开关管N1和PMOS开关管P2，电容C1和电源vdd相叠加，在Vout处输出一个理论可达6.6V的电压，然后经过分压电阻R1、R2分压得到想要的电压。当输出电压大于所需电压时，比较器会输出一个高电平，经由后级的时钟产生电路控制，使得PMOS开关管P2和NMOS开关管N1处于常关状态。当输出电压小于所需电压时，比较器会输出一个低电平，经由后级的时钟产生电路控制，使得可以PMOS开关管P2和NMOS开关管N1处于开启状态，为电容C1充电。
最后应说明的是：以上实施例仅用以说明本发明的技术方案，而非对其限制；尽管参照前述实施例对本发明进行了详细地说明，本领域的普通技术人员应当理解：其依然可以对前述各实施例所记载的技术方案进行修改，或者对其中部分技术特征进行等同替换；而这些修改或者替换，并不使相应技术方案的本质脱离本发明各实施例技术方案的精神和范围。

Claims (5)

1.一种基于非交叠时钟控制的低功耗电荷泵电路，其特征在于：所述电路包括NMOS开关管N1、PMOS开关管P1、PMOS开关管P2、PMOS开关管P3、电容C1、控制时钟CLK1、控制时钟CIK2、控制时钟CLK3、控制时钟CIK4和比较器，所述PMOS开关管P1和PMOS开关管P2的源极接电源vdd，漏极接电容C1，栅极分别接控制时钟CLK3和控制时钟CIK1，所述PMOS开关管P3的栅极接控制时钟CLK4，源极接电容C1，漏极接分压电阻R1和R2，并输出所需电压，所述NMOS开关管N1的栅极接控制时钟CLK2，漏极接电容C1，源极接地，所述分压电阻R1和R2之间接一个比较器。
2.根据权利要求1所述的基于非交叠时钟控制的低功耗电荷泵电路，其特征在于：所述控制时钟CLK1、控制时钟CIK2、控制时钟CLK3和控制时钟CIK4分别控制PMOS开关管P2、NMOS开关管N1、PMOS开关管P1和PMOS开关管P3的开启和关断，所述控制时钟CLK1与其它三个时钟：控制时钟CLK2、控制时钟CLK3以及控制时钟CLK4状态相反。
3.根据权利要求1或2所述的基于非交叠时钟控制的低功耗电荷泵电路，其特征在于：所述比较器接时钟产生电路。
4.根据权利要求3所述的基于非交叠时钟控制的低功耗电荷泵电路，其特征在于：所述时钟产生电路分别接控制时钟CLK1、控制时钟CIK2、控制时钟CLK3和控制时钟CIK4。
5.根据权利要求3所述的基于非交叠时钟控制的低功耗电荷泵电路，其特征在于：所述电源vdd为3.3V电源。
CN202211001813.3A 2022-08-20 2022-08-20 一种基于非交叠时钟控制的低功耗电荷泵电路 Pending CN115360905A (zh)

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