CN117498680A - 一种开关电容变换器 - Google Patents
一种开关电容变换器 Download PDFInfo
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- CN117498680A CN117498680A CN202311206971.7A CN202311206971A CN117498680A CN 117498680 A CN117498680 A CN 117498680A CN 202311206971 A CN202311206971 A CN 202311206971A CN 117498680 A CN117498680 A CN 117498680A
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Classifications
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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
- H02M1/08—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
-
- 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
- H02M3/10—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M3/145—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
- H02M3/155—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Dc-Dc Converters (AREA)
Abstract
本发明提供一种开关电容变换器,属于高变换效率高功率密度高电压变比电力电子技术领域,该开关电容变换器将电压变比为4:1的Dickson开关电容变换器与5:1的Fibonacci开关电容变换器级联,构成了一种新型的电压变比为8:1的开关电容变换器。其中,4:1的Dickson开关电容变换器包含10个开关管、3个飞跨电容;5:1的Fibonacci开关电容变换器包含9个开关管、3个飞跨电容以及1个输出电容和1个负载电阻。具有高电压变比,高变换效率的有益效果。
Description
技术领域
本发明属于高变换效率高功率密度高电压变比电力电子技术领域,具体涉及一种开关电容变换器。
背景技术
近年来,随着电力电子技术的快速发展,小型化、高频化和高效率已经成为直流开关电源设计的必然要求。开关电容类变换器因其体积小和能量密度高,在中小功率场合得到了广泛的应用。
随着信息技术和半导体技术的迅速发展,数据中心的市场需求和应用规模日益增长,其巨大的能量消耗逐渐成为不可被忽视的严峻问题。数据中心内各类设备要求的供电电压不同,其中CPU等负载所需的电源电压甚至低于1V,在48V直流电压转换为1V直流电压的应用场景下,需要一种高变比、高效率的开关电容变换器。
发明内容
鉴于上述问题,本发明的目的在于提供一种开关电容变换器,其变比为8:1,具有高电压变比、高变换效率的特点。
本发明为实现上述发明目的,采用如下技术方案:
一种开关电容变换器,包括:输入直流电压源Vin、输出电容Co、负载R以及依次级联的4:1的Dickson开关电容变换器、5:1的Fibonacci开关电容变换器;所述Dickson开关电容变换器包括开关管Qa_1、开关管Qa_2、开关管Qa_3、开关管Qa_4、开关管Qb_1、开关管Qb_2、开关管Qb_3、开关管Qc_1、开关管Qc_2、开关管Qc_3以及飞跨电容Cflya、飞跨电容Cflyb、飞跨电容Cflyc,所述Fibonacci模块包括开关管Qd_1、开关管Qd_2、开关管Qd_3、开关管Qe_1、开关管Qe_2、开关管Qe_3、开关管Qf_1、开关管Qf_2、开关管Qf_3以及飞跨电容Cflyd、飞跨电容Cflye以及飞跨电容Cflyf;所述输入直流电压源Vin负极与地连接,输入直流电压源Vin正极与开关管Qa_4的漏极相连,开关管Qa_4的源极、开关管Qa_3的漏极和飞跨电容Cflya的一端相连,开关管Qa_2的源极、飞跨电容Cflya的另一端和开关管Qa_1的漏极相连,开关管Qa_1的源极与地相连,开关管Qa_2的漏极和输出电容Co的一端相连,开关管Qa_3的源极、开关管Qb_3的漏极和飞跨电容Cflyb的一端相连,开关管Qb_2的源极、飞跨电容Cflyb的另一端和开关管Qb_1的漏极相连,开关管Qb_1的源极与地相连,开关管Qb_2的漏极和输出电容Co的一端相连,开关管Qb_3的源极、开关管Qc_3的漏极和飞跨电容Cflyc的一端相连,开关管Qc_2的源极、飞跨电容Cflyc的另一端和开关管Qc_1的漏极相连,开关管Qc_1的源极与地相连,开关管Qc_2的漏极和输出电容Co的一端相连,开关管Qc_3的源极、开关管Qd_3的漏极和飞跨电容Cflyd的一端相连,开关管Qd_2的源极、飞跨电容Cflyd的另一端和开关管Qd_1的漏极相连,开关管Qd_1的源极与地相连,开关管Qd_2的漏极与开关管Qd_3的源极相连,开关管Qd_3的源极、开关管Qe_3的漏极和飞跨电容Cflye的一端相连,开关管Qe_2的源极、飞跨电容Cflye的另一端和开关管Qe_1的漏极相连,开关管Qe_1的源极与地相连,开关管Qe_2的漏极和开关管Qe_3的源极相连,开关管Qe_3的源极、开关管Qf_3的漏极和飞跨电容Cflyf的一端相连,开关管Qf_2的源极、飞跨电容Cflyf的另一端和开关管Qf_1的漏极相连,开关管Qf_1的源极与地相连,开关管Qf_2的漏极、开关管Qf_3的源极和输出电容Co的一端相连。
进一步的,本发明结合了现有的电压变比为4:1的Dickson开关电容变换器与5:1的Fibonacci开关电容变换器,提出了一种新型的开关电容变换器,其电压变比为8:1。
与现有技术相比,本发明具有高电压变比、高变换效率的特点。
附图说明
图1是本发明一种开关电容变换器的电路拓扑结构示意图。
图2是图1的一种开关电容变换器拓扑中开关管Qa_2、开关管Qa_4、开关管Qb_1、开关管Qb_3、开关管Qc_2、开关管Qd_1、开关管Qd_3、开关管Qe_2、开关管Qf_1、开关管Qf_3导通,其余开关管关断情况下,所得电路等效示意图。
图3是图1的一种开关电容变换器拓扑中开关管Qa_1、开关管Qa_3、开关管Qb_2、开关管Qc_1、开关管Qc_3、开关管Qd_2、开关管Qe_3、开关管Qf_2导通,其余开关管关断情况下,所得电路等效示意图。
具体实施方式
本发明的一种开关电容变换器,开关管Qa_2、Qa_4、Qb_1、Qb_3、Qc_2、Qd_1、Qd_3、Qe_2、Qf_1、Qf_3为一组,同时导通或关断。开关管Qa_1、Qa_3、Qb_2、Qc_1、Qc_3、Qd_2、Qe_3、Qf_2为另一组,同时导通或关断。在一个完整的开关周期中,分为两种工作模态。
模态一:开关管Qa_2、Qa_4、Qb_1、Qb_3、Qc_2、Qd_1、Qd_3、Qe_2、Qf_1、Qf_3导通,其余开关管关断,等效电路如图2所示,可知
VCflya=Vin-Vo
VCflyf=Vo
VCflyb=VCflyc+Vo
模态二:开关管Qa_1、Qa_3、Qb_2、Qc_1、Qc_3、Qd_2、Qe_3、Qf_2导通,其余开关管关断,等效电路如图3所示,可知
VCflya=VCflyb+Vo
VCflyc=VCflyd+VCflye
VCflye=VCflyf+Vo
上述式子中,VCflya、VCflyb、VCflyc、VCflyd、VCflye、VCflyf分别是飞跨电容Cflya、Cflyb、Cflyc、Cflyd、Cflye、Cflyf的平均电压,解方程组可得Vo=Vin/8,VCflya=7Vin/8,VCflyb=3Vin/4,VCflyc=5Vin/8,VCflyd=3Vin/8,VCflye=Vin/4,VCflyf=Vin/8。
Claims (2)
1.一种开关电容变换器,其特征在于:包括输入直流电压源Vin、输出电容Co、负载R以及依次级联的电压变比为4:1的Dickson开关电容变换器、5:1的Fibonacci开关电容变换器;所述Dickson开关电容变换器包括开关管Qa_1、开关管Qa_2、开关管Qa_3、开关管Qa_4、开关管Qb_1、开关管Qb_2、开关管Qb_3、开关管Qc_1、开关管Qc_2、开关管Qc_3以及飞跨电容Cflya、飞跨电容Cflyb、飞跨电容Cflyc,所述Fibonacci开关电容变换器包括开关管Qd_1、开关管Qd_2、开关管Qd_3、开关管Qe_1、开关管Qe_2、开关管Qe_3、开关管Qf_1、开关管Qf_2、开关管Qf_3以及飞跨电容Cflyd、飞跨电容Cflye以及飞跨电容Cflyf;所述输入直流电压源Vin负极与地连接,输入直流电压源Vin正极与开关管Qa_4的漏极相连,开关管Qa_4的源极、开关管Qa_3的漏极和飞跨电容Cflya的一端相连,开关管Qa_2的源极、飞跨电容Cflya的另一端和开关管Qa_1的漏极相连,开关管Qa_1的源极与地相连,开关管Qa_2的漏极和输出电容Co的一端相连,开关管Qa_3的源极、开关管Qb_3的漏极和飞跨电容Cflyb的一端相连,开关管Qb_2的源极、飞跨电容Cflyb的另一端和开关管Qb_1的漏极相连,开关管Qb_1的源极与地相连,开关管Qb_2的漏极和输出电容Co的一端相连,开关管Qb_3的源极、开关管Qc_3的漏极和飞跨电容Cflyc的一端相连,开关管Qc_2的源极、飞跨电容Cflyc的另一端和开关管Qc_1的漏极相连,开关管Qc_1的源极与地相连,开关管Qc_2的漏极和输出电容Co的一端相连,开关管Qc_3的源极、开关管Qd_3的漏极和飞跨电容Cflyd的一端相连,开关管Qd_2的源极、飞跨电容Cflyd的另一端和开关管Qd_1的漏极相连,开关管Qd_1的源极与地相连,开关管Qd_2的漏极与开关管Qd_3的源极相连,开关管Qd_3的源极、开关管Qe_3的漏极和飞跨电容Cflye的一端相连,开关管Qe_2的源极、飞跨电容Cflye的另一端和开关管Qe_1的漏极相连,开关管Qe_1的源极与地相连,开关管Qe_2的漏极和开关管Qe_3的源极相连,开关管Qe_3的源极、开关管Qf_3的漏极和飞跨电容Cflyf的一端相连,开关管Qf_2的源极、飞跨电容Cflyf的另一端和开关管Qf_1的漏极相连,开关管Qf_1的源极与地相连,开关管Qf_2的漏极、开关管Qf_3的源极和输出电容Co的一端相连。
2.根据权利要求1所述的开关电容变换器,其特征在于,所述一种开关电容变换器结合了电压变比为4:1的Dickson开关电容变换器与5:1的Fibonacci开关电容变换器,其电压变比为8:1。
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