如何计算反激电源中变压器初级初级线圈圈数Np，助力Standex-Meder平板变压器设计

时间： 2019-02-23 来源：世强

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目前对反激电源设计，最重要的还是对变压器的设计，若工程师需要定制变压器，就需要告知变压器厂变压器设计的一些重要参数，如初级线圈的峰值电流Ip、漏感尖峰电压Vspike、初级线圈圈数Np、初级线圈电感量Lp、次级线圈圈数Ls、辅助绕组圈数Naux等。

下面我给大家介绍如何计算变压器初级线圈圈数Np:

1. 最低输入电压时，功率转换器的开关频率为最低设定70KHZ(这个频率是由你选定的电源芯片决定)。此时最大的导通时间为：ton=1/fswitch×Dmax。

2. E＝nΔΦ/Δt=Np×Bmax×Ae/ton=Vbulk-min,所以Np=Vbulk-min×ton/( Bmax×Ae)。假定输出功率为72W（已知），从而可以选出变压器的磁芯EE型（功率不同，选择的磁芯不同），而Ae和Bmax就可以通过查datasheet知道。

上述的计算公式方便了大家对变压器的理解，也便于大家设计变压器，世强代理的STANDEX-MEDER 平板变压器可以定制，即按照客户的要求，帮助客户合理设计变压器，Standex-Meder变压器P025-P1100的优势主要有：

①专利设计底座（ US专利号 7,129,809)和专利设计输出端子

(U.S. 专利号7,460,002)，提供了最佳散热性能

②良好的散热设计：铁氧体磁芯与散热基片直接接触

③改善散热，可提供带散热片设计

④两侧端子共面性能稳定而精确

⑤优越可焊性

⑥平面变压器的绕组表面与磁芯密切接触，大大改善热传导

性能，降低了 EMI

⑦灵活的低阻抗端子

⑧无冷却空气流条件下也可运行

⑨满足最小8mm 间隙和爬电距离

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如何计算反激电源中变压器初级峰值电流Ip和漏感尖峰电压Vspike，助力Standex-Meder平板变压器设计

目前对反激电源设计，最重要的还是对变压器的设计，若工程师需要定制变压器，就需要告知变压器厂变压器设计的一些重要参数，如初级线圈的峰值电流Ip、漏感尖峰电压Vspike、初级线圈圈数Np、初级线圈电感量Lp、次级线圈圈数Ls、辅助绕组圈数Naux等。本文并推荐了Standex-Meder变压器P025-P1100。

2019-02-23 - 设计经验代理服务技术支持批量订货

如何计算反激电源中变压器初级线圈电感量Lp，助力Standex-Meder平板变压器设计

目前对反激电源设计，最重要的还是对变压器的设计，若工程师需要定制变压器，就需要告知变压器厂变压器设计的一些重要参数，如初级线圈的峰值电流Ip、漏感尖峰电压Vspike、初级线圈圈数Np、初级线圈电感量Lp、次级线圈圈数Ls、辅助绕组圈数Naux等。下面我给大家介绍如何计算变压器初级线圈电感量Lp。

2019-02-24 - 设计经验代理服务技术支持批量订货

【经验】基于东科半导体AC-DC电源管理芯片DK065G的变压器设计

通过客户对东科半导体AC-DC电源管理芯片DK065G使用过程中的困惑，引申出对反激电源外围电路中变压器参数的设计与计算的讨论。

2022-08-10 - 设计经验代理服务技术支持批量订货

【选型】赛特勒（ZETTLER）变压器选型指南

目录- 密封变压器带PTC保护的密封变压器电抗器高频变压器共模电感器工字型电感器电流互感器高精度电流互感器低频电压器环形变压器平面变压器产品客制能力

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ZETTLER - 选型指南 - V201903 代理服务技术支持批量订货

车规级变压器定制

可定制变压器电压最高4.5KV，高频30MHz；支持平面变压器、平板变压器、OBC变压器、DCDC变压器、PLC信号变压器、3D电源、电流变压器、反激变压器、直流直流变压器、车载充电器变压器、门极驱动变压器等产品定制。

服务提供商 - PREMO 进入

铭普光磁（Mentech）电源变压器选型指南

目录- Index Definition of Part Number Product Selection Table EP7 Transformer EP10 Transformer EP13 Transformer EPD15 Transformer EPD20 Transformer EPD25 Transformer

型号- EP-421SG,EFD-352SG,EFD-394SG,EP20,EP-425SG,EFD TYPE,EP25,EFD-258SG,EP-312SG,EF TYPE,EP-602SG,EP-523SG,EP-546SG,EP-316SG,EP-569SG,EP-527SG,EFD-344SG,EP-475SG,EFD-280SG,EFD-363SG,EP10,EFD-405SG,EP-286SG,EP13,EFD-269SG,EP15,EP-113SG,EFD-412SG,EP-535SG,EP-197SG,EP-558SG,EP-191SG,EP-505SG,EFD-270SG,EFD-080SG,EFD-395SG,EP-464SG,EFD-278SG,EFD-069SG,EP-378SG,EP-581SG,EP-603SG,EP-524SG,EFD-304SG,EP-547SG,EP-476SG,EP-434SG,EFD-383SG,EP-056SG,EFD-031SG,EP-808SG,EE TYPE,EFD-224SG,EP-389SG,EFD-262SG,EP-536SG,EP-506SG,EFD-271SG,EP-423SG,EP-465SG,EFD-373SG,EP-427SG,EFD-275SG,EFD-022SG,EFD-064SG,EFD-087SG,EFD-207SG,EFD-256SG,EFD-252SG,EP-525SG,EFD-328SG,EP-518SG,EFD-365SG,EFD-095SG,EFD-407SG,EP-097SG,EFD-008SG,EP-612SG,EP-199SG,EFD,EP-255SG,EP-489SG,EP-420SG,EP-503SG,EFD-021SG,EFD-002SG,EP-095SG,EP TYPE,EP-624SG,EP-315SG,EP-492SG,EP-704SG,EFD-010SG,EP-285SG,EFD-014SG,EFD-037SG,EP7,EFD-268SG,EFD-408SG,EFD-007SG,EFD-222SG

03/2015 - 铭普光磁 - 选型指南 - Rev 2015 A0 代理服务技术支持批量订货