IC693PCM300LTMP  工作頻率與變壓器、電感器和陶瓷電容器的尺寸有關(guān)。雖然較高的工作頻率通常與尺寸減小有關(guān)，但超過200 kHz至400 kHz的頻率可能會(huì)增加損耗并降低變壓器漏感引起的電壓調(diào)節(jié)。

實(shí)際漏感不會(huì)繼續(xù)與變壓器設(shè)計(jì)頻率成反比。泄漏電感中儲(chǔ)存的能量，L × I2/2，通常被浪費(fèi);由于功率是頻率×能量，因此通過漏感的功率損耗與頻率成比例。

除了功率電平和頻率外，變壓器引腳排列和間距是通常決定變壓器尺寸的其他因素。選擇PQ2625便于手動(dòng)纏繞Rubade多層特氟龍絕緣線。該設(shè)計(jì)的工作頻率為 200 kHz。

IC693PCM300LTMP 在采用肖特基輸出整流器的尺寸和功率優(yōu)化的反激式變壓器中，連續(xù)導(dǎo)通模式（CCM）通常可提供效率。峰值變壓器磁通密度低于0.2 T至0.22 T，峰值負(fù)載和輸入電壓，以避免變壓器發(fā)熱時(shí)鐵芯飽和。交流峰峰值磁通密度盡可能高，但受到可接受的磁芯損耗的限制;因此，本應(yīng)用筆記中的設(shè)計(jì)始于Ferroxcube 0F05鐵氧體在0 kHz時(shí)的交流峰峰值磁通密度極限為07.200 T至3.3 T。

IC693PCM300LTMP   

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