CN106877666A - 基于top100y的双路输出开关电源 - Google Patents

基于top100y的双路输出开关电源 Download PDF

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CN106877666A
CN106877666A CN201510914810.2A CN201510914810A CN106877666A CN 106877666 A CN106877666 A CN 106877666A CN 201510914810 A CN201510914810 A CN 201510914810A CN 106877666 A CN106877666 A CN 106877666A
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voltage
power supply
top100y
switching power
outputs
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李福来
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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
    • H02M3/22—Conversion of dc power input into dc power output with intermediate conversion into ac
    • H02M3/24—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters
    • H02M3/28—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac
    • H02M3/325—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal
    • H02M3/335—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
    • H02M3/33507—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of the output voltage or current, e.g. flyback converters
    • H02M3/33523—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of the output voltage or current, e.g. flyback converters with galvanic isolation between input and output of both the power stage and the feedback loop
    • 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
    • H02M3/22—Conversion of dc power input into dc power output with intermediate conversion into ac
    • H02M3/24—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters
    • H02M3/28—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac
    • H02M3/325—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal
    • H02M3/335—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
    • H02M3/33561—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only having more than one ouput with independent control

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

Abstract

基于TOP100Y的双路输出开关电源，由基本稳压管调整电路，TOP电源组成。所述基本稳压管调整电路需要设计两级，第一级的输入为+24V电压，经调整稳压后变为+l2V电压输出，同时+12V电压再作为下一级的输入电压，再经调整稳压后变为+5V输出。所述TOP电源利用TOP100Y为核心制作+l2v和+5v双路电压输出，功率约4w左右的稳压电源。本发明提供的基于TOP100Y的双路输出开关电源，有效地解决了线性稳压电源的热能消耗问题，并且提高了电源效率。

Description

基于TOP100Y的双路输出开关电源
技术领域
本发明涉及基于TOP100Y的双路输出开关电源。
背景技术
随着信息技术的发展，电子设备的应用越来越广泛，对使用的电源要求更加丰富。传统的稳压电源技术发展已经完善，它具有稳定性能好、输出纹波电压小、使用可靠等特点。但缺点是体积大，功耗也较大，电源效率很低，很难满足现代电子设备发展的要求。
单片式开关电源是将高压MOSFET、PWM控制器、故障自动保护功能及其它电路集成到一个硅片上，并辅以较少的外围电路构成的开关电源，目前已经成为国际上开发中、小功率开关电源、精密开关电源及开关电源模块的优选集成电路。
发明内容
为解决上述问题，本发明设计了基于TOP100Y的双路输出开关电源。
本发明解决其技术问题所采用的技术方案是：基于TOP100Y的双路输出开关电源由基本调整管电路和TOP电源组成。
所述基本调整管电路，即基本线性稳压电源。基本调整管电路需要设计两级，第一级的输入为+24V电压，经调整稳压后变为+l2V电压输出，同时+12V电压再作为下一级的输入电压，再经调整稳压后变为+5V输出。
所述TOP电源是目前应用比较广泛的电源，其主要芯片是由美国功率集成公司(PowerIntegrationsInc)推出的高频开关电源TOPSwitch系列集成芯片，三端离线式脉宽调制单片开关集成电路TOP将PWM控制器与功率开关MOSFET合二为一封装在一起，已成为开关电源IC发展的主流。因此根据电路指标适宜采用TOP开关集成电路发明开关电源，利用TOP100Y为核心制作+l2v和+5v双路电压输出，功率约4w左右的稳压电源。其主要工作原理：由控制电压向并联调整器和门极驱动提供偏置电压，控制端电流Ic，改变电容CA电压并与PWM调制器比较，调节脉宽大小。主控电路与门级驱动控制MOSFET，调节脉冲占空比，当反馈电流Ic↑→D↓→U0↓，最终使输出U0不变，变压器次级输出电压稳定。TOP频变压器工作频率为62.5KHz。采用EI25型铁氧体磁芯，取最大占空比为50%。
本发明的有益效果是，基于TOP100Y的双路输出开关电源由基本稳压管调整电路和TOP电源组成。该发明有效地解决了线性稳压电源的热能消耗问题，并且提高了电源效率。
附图说明
下面结合附图对本发明进一步说明。
图1是线性稳压电源电路图。
图2是主电路结构图。
具体实施方式
在图1中，基本调整管电路，即基本线性稳压电源。根据辅助电源的设计要V。因此，基本调整管电路需要设计两级，第一级的输入为+24V电压，经调整稳压后变为+l2V电压输出，同时+12V电压再作为下一级的输入电压，再经调整稳压后变为+5V输出。
TOP电源是目前应用比较广泛的电源，其主要芯片是由美国功率集成公司(PowerIntegrationsInc)推出的高频开关电源TOPSwitch系列集成芯片，三端离线式脉宽调制单片开关集成电路TOP将PWM控制器与功率开关MOSFET合二为一封装在一起，已成为开关电源IC发展的主流。因此根据电路指标适宜采用TOP开关集成电路设计开关电源，利用TOP100Y为核心制作+l2v和+5v双路电压输出，功率约4w左右的稳压电源。其主要工作原理：由控制电压向并联调整器和门极驱动提供偏置电压，控制端电流Ic，改变电容CA电压并与PWM调制器比较，调节脉宽大小。主控电路与门级驱动控制MOSFET，调节脉冲占空比，当反馈电流Ic↑→D↓→U0↓，最终使输出U0不变，变压器次级输出电压稳定。TOPSwitch-I具有分频器( 8)，使每次自启动时，S由O端吸合到1端，控制端由内部电源提供电压，控制端旁路电容C经过8个充放电周期才导通，并将占空比减小到5%，降低芯片功耗。TOP100Y具有过流保护电路，一般认为当电流过大时，芯片自启动。但当芯片启动时，电流尖峰过大，芯片有脉冲前沿尖峰过大无效功能，使电路不会误动作，而自动重起。
在图2中，通常在双路输出式单片开关电源设计中，需要3级高频变压器。为了简化驱动电路，减少电路源器件，减少电源体积，降低成本。本发明采用一种改进的单端反激式结构，通过一个次级线圈N2输出+l2V，用反馈级线圈N3输出+5V。当TOP100Y内部的开关功率管导通时，Nl上产生上正下负的电压，N2上感应电压极性为上负下正，VD2截止，Nl贮存能量。当TOP100Y中开关功率管截止时，Nl上产生上负下正的感应电动势，N2上感应电压极性为上正下负，VD2导通。经C2放电，Ll、C3滤波后提供+l2V输出电压。R2为CI2中发光二极管LED的限流电阻，LED工作电流很小，因此，R2上的压降可忽略不计。为提高高频整流效率，降低损耗，VD2选用肖特基二极管或超快恢复二极管。N3上感应的交流电压经VD3整流、C4放电、L2、C5滤波，获得+5V输出，同时为光电耦合器中的光电三极管集电极供电。光电耦合器P521中LDE发出的光激励光电三极管，产生的发射极电流送至TOP100Y的控制器，用来调节占空比。电路中R1、C1和VD1组成保护电路，保护TOP100Y中的功率开关管不受损坏。VD1选用反向耐压为600V的超快恢复二极管UF4005。当TOP100Y中的开关功率管导通时，Nl上产生上正下负的电压，VD1截止，保护电路不起作用。当开关管截止瞬间，Nl的电压瞬时极性为上负下正，此时VD1导通，尖峰电压就被R1、Cl吸收掉。
当负载变化时，通过对占空比的调节，+l2V输出基本不变。但是，+5V输出变化较为明显，这是由于仅从+l2V主输出上引出反馈信号，当其负载电流发生变化时，会影响+5V输出的稳定性。解决方法是给+5V输出连接图中稳压电路。

Claims (3)

1.基于TOP100Y的双路输出开关电源，其特征是：由基本稳压管调整电路和TOP电源组成。
2.根据权利要求1所述的基于TOP100Y的双路输出开关电源，其特征是：所述基本稳压管调整电路需要设计两级，第一级的输入为+24V电压，经调整稳压后变为+l2V电压输出，同时+12V电压再作为下一级的输入电压，再经调整稳压后变为+5V输出。
3.根据权利要求1所述的基于TOP100Y的双路输出开关电源，其特征是：所述TOP电源利用TOP100Y为核心制作+l2v和+5v双路电压输出，功率约4w左右的稳压电源。
CN201510914810.2A 2015-12-13 2015-12-13 基于top100y的双路输出开关电源 Pending CN106877666A (zh)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112804792A (zh) * 2021-04-13 2021-05-14 深圳市安规科技有限公司 一种稳压供电的调光电源模块及led调光装置

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112804792A (zh) * 2021-04-13 2021-05-14 深圳市安规科技有限公司 一种稳压供电的调光电源模块及led调光装置
WO2022217693A1 (zh) * 2021-04-13 2022-10-20 深圳市安规科技有限公司 一种稳压供电的调光电源模块及led调光装置

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