管子選型損耗計(jì)算(3.26).doc

1.主管：150V管子損耗(W)50V輸入28V輸入12.5V輸入管型15V輸出5V輸出15V輸出5V輸出15V輸出5V輸出備注（15W）SiR838DP0.161270.161580.130180.132850.17380.1834935ASi7738DP0.169760.170330.135580.1383Si7430DP0.156160.156820.133710.13796Si4472DY0.156160.156820.133710.1379650V輸入28V輸入12.5V輸入15V輸出5V輸出15V輸出5V輸出15V輸出5V輸出備注（30W）SiR838DP0.227550.240.23430.25410.467480.5129335ASi7738DP0.24020.253760.242420.2627Si7430DP0.23070.244720.270590.29817以SiR838DP為例：工況 15V輸出/12.5V輸入/15W功率 管子工況： 參數(shù)準(zhǔn)備： 計(jì)算過程：a開關(guān)損耗b電容損耗c驅(qū)動損耗計(jì)算結(jié)果(總損耗)：2.同步整流管：100V(當(dāng)輸出為15V時的整流管)損耗(W)50V輸入28V輸入12.5輸入管型15V輸出15V輸出15V輸出備注（15W）Si4100DY0.073690.08653Si4484EY0.073140.06206Si4486EY0.098470.09138Si7454DP0.070740.059660.10727.8A15V輸出15V輸出15V輸出備注（30W）Si4100DY0.159250.25099Si4484EY0.096290.09487Si4486EY0.13280.14737Si7454DP0.093890.09247SiR432DP0.116130.133690.304828ASi7322DN0.124710.18165Si4190DY(6V)0.495140.27184SiS892DN(6V)0.265420.166963 . 同步整流管：50V(含高于50V的管子) (當(dāng)輸出為5V時的整流管)損耗(W)50V輸入28V輸入12.5輸入管型5V輸出5V輸出5V輸出備注（15W）Si7164DP0.134930.128750.1726760ASi7174DP0.141130.13669Si7186DP0.143820.1559Si7852ADP0.120780.15714SiE876DF0.151410.14006SiJ482DP(6V)0.160370.11419SiR662DP(6V)0.245640.12312SiE818DF(6V)0.131070.13847SiR826DP(6V)0.192710.11276SiR880DP(6V)0.189220.12079SiS468DN(6V)0.113980.163555V輸出5V輸出5V輸出備注（30W）Si7164DP0.179990.212290.4167260ASi7174DP0.190420.22966Si7186DP0.237990.32512Si7852ADP0.263120.43449SiE876DF0.209780.22666SiJ482DP(6V)0.246000.24628SiR662DP(6V)0.322260.18368SiE818DF(6V)0.232110.30861SiR826DP(6V)0.251580.20297SiR880DP(6V)0.274690.24199SiS468DN(6V)0.327970.58488(1) NPN柱電流=3A, Vceo=60V, fp=130MHz, Hfe=100-300(2) PNP柱電流=3A, Vceo=60V, fp=130MHz, Hfe=100-300（3）P溝道JFET, Id=2A；Vds=100V ; Pd=20W（4）TLV431，尺寸盡量小，尺寸小于So8，損耗同TLV431（70mW）,封裝SOT-23。（5）光耦PS2801能否封裝為SO-4給出上述原型管和國產(chǎn)化尺寸，要求封裝兼容，盡量小。4.供電推挽三極管(1)管子型號FZT851TA(NPN) 2SD965AIc=6A, Icc=2mA , Vceo=60V, fp=130MHz, Hfe=100-300(2) 管子型號FZT951TA(PNP) HB772HQIc=6A, Icc=1mA , Vceo=60V, fp=125MHz, Hfe=100-3005.啟動管子(1) P溝道GFET, 管子型號2N6845Id=4A, Vds=100V ,Pd=20w,R