科啟達(dá)電子收購電料貼片直插IC集成IC、二、三極管、手機料、CPU內(nèi)存、繼電器、濾波器、光耦、模塊TI,XILINX,ATMEL,ALTERA,AD,ST,ON等各種IC 芯片、內(nèi)存閃存、晶振、高頻管、CPU、BGA、等電子元器件、退港貨整單 香港 臺灣 國內(nèi) IC庫存,工廠庫存,個人庫存,IC電子料,尋求工廠清單IC貨源,有貨源歡迎來電洽談!
同時歡迎有資源的朋友中介引薦,互利共贏 期待與您的合作!
多路輸出式電源變換器電路如圖2所示。其輸入電壓為36V到90V的準(zhǔn)方波電壓,三路輸出分別為:UO1=+5V(2A),UO2=+15V(0.17A),UO3=-15V(0.17A),F(xiàn)將UO1定為主輸出,其電壓調(diào)整率SV=±0.4%;UO2和UO3為輔輸出,總電源效率可達(dá)75%~80%。電路中采用一片04Y型三端單片開關(guān)電源集成電路。主輸出繞組電壓經(jīng)過VD2、C2、L1和C3整流濾波后,得到+5V電壓。VD2采用MBR735型35V/7.5A肖特基二極管。兩個輔輸出繞組及輸出電路完全呈對稱結(jié)構(gòu)。因為±15V輸出電流較小,故整流管VD4和VD5均采用UF4002型100V/1A的超快恢復(fù)二極管。由線性光耦CNY17-2和可調(diào)式精密并聯(lián)穩(wěn)壓器TL431C構(gòu)成光耦反饋式精密開關(guān)電源,可以對+5V電壓進(jìn)行精密調(diào)整。反饋繞組電壓通過VD3、C4整流濾波后,得到12V反饋電壓。由 P6KE120型瞬態(tài)電壓抑制器和UF4002型超快恢復(fù)二極管構(gòu)成的漏極鉗位保護(hù)電路,能吸收由高頻變壓器漏感形成的尖峰電壓,保護(hù)芯片內(nèi)部的功率場效應(yīng)管MOSFET不受損壞。外部誤差放大器由TL431C組成。當(dāng)+5V輸出電壓升高時,經(jīng)R3、R4分壓后得到的取樣電壓,就與TL431C中的2.5V帶隙基準(zhǔn)電壓進(jìn)行比較,使其陰極電位降低,LED的工作電流IF增大,再通過線性光耦I(lǐng)C2(CNY17-2)使控制端電流IC增大,04Y的輸出占空比減小,使UO1維持不變,達(dá)到穩(wěn)壓目的。+5V穩(wěn)壓值UO1則由TL431C、光耦中的LED正向壓降來設(shè)定。R1是LED的限流電阻。誤差放大器的頻率響應(yīng)由C5、R2 和C6來決定。C5的作用有三個:濾除控制端上的尖峰電壓;決定自動重啟動頻率;與R2一起對控制回路進(jìn)行補償。
RM02FTN4991
RC0201FR-07499KL
WR04X4993FTL
WR08X510 JTL
RC0805JRG0751R
RC1206FR-0751RL
WR12X51R0FTL
CR-02FL6
WR08X512 JTL
WR04X5111FTL
RK73H1JTTD5101F
RC0603JR-075K1L
RK73H2BTTD5101F
RC0402FR-0751K
RC0201FR-0751KL
RC0402JRG07510K
RM06FTN5113
CR02510KF002
RC0402FR-07510KL
WR04X515 JTL
WR04X5231FTL
RTT015231FTH
RTT015232FTH
RM06FTN5361
WR04X54R9FTL
RTT025490FTH
WR04X54TL
RM04FTN5493
RM04FTN56R2
RM02FTN56R0
RTT0156R0FTH
WR02X56R0FAL
0402WGJ0561TCE
WR06X5600FTL
CR03560RF001(WLF)
WR04X5600FTL
WR06X5601FTL
CR0356K0F001
RC0402FR-075K76
RC0402FR-075K76L
WR04X5761FTL
WR04X5761FTL
RC0402FR-07590RL
WR04X5901FTL
RM04FTN5901
RM04FTN60R4
WR06X60R4FTL
RM02FTN60R4
WR04X6040FTL
RT0402BRD07604RL
RM02FTN6040
RC0201FR-07604RL
RTT026041FTH
RM06FTN6042
RC0603FR-0760K4L
RTT036042FTP
RC0402FR-0761R9L
WR04X6191FTLJ
WR06X62R0FTL
RC0402JR-0762RL
CR0262K0F002
RC0402FR-07620KL
CR02620KF002
RC0402FR-0763R4L
CR0363R4F001
RM04FTN6340
WR04X6342FTL
RC0402FR-0763K4L
CR0364R9F001
RTT026490FTH
RC0402FR-07649RL
CR026K65F002
CR02665KF002
RM04JTN680
0603WAF680JT5E
RC0402JR-0768RL
CR03680RF001
RC0603JR-07680RL
RC0201FR-076K8L
RC0402JRG0768K
RM04FTN6803
RC0402FR-07680KL
WR04X6803FTL
WR12X6981FTL
RM04FTN6981
WR06X6982FTL
RC0603FR-0769K8L
RC0201FR-0769K8L
RTT016982FTH
WF04H6982DTL
RC0402FRF07715R
RC0402FR-07715RL
WF04H7151DTL
0402WGF7152TCE
WR02X7152FAL
RK73H1HTTC7152F
RM06FTN7322
WR04X7323FTL
RC0402FRG0775R
RM10FTN75R0
WR02X75R0FAL
RC0201FR-0775RL
RTT1275R0FTP
WR04X7500FTL
RM10FTN7500
WR06X7500FTL
RC0603FRF07750R
WR06X7501FTL
RTT027502FTH
RM02FTN7682
RC0402FR-07806RL
WR04X8061FTL
RC0402FR-0780K6L
2.32271E+11
CR0382R0F001
RC0402JRF0782R
RM04JTN821
RC0603FRG078K2
RM04JTN822
RM04FTN8251
RM04FTN8201
RM02JTN822
WR06X8202FTL
RK73H1ETTP8202F
RC2512FK-0782KL
RM06FTN8203
WR06X8450FTL
RM04FTN8660
RC0402FR-07866RL
WR04X8662FTL
RC0402FR-0786K6L
RM02FTN8662
RC0201FR-0786K6L
WR04X8663FTL
WR04X90R9FTL
ERJ2RKF9091X
CR0390K9F001
RC0201FR-0790K9L
WR04X9093FTL
RM04FTN9100
WR02X9103FAL
WR04X9310FTL
WR04X9311FTL
RC0603FRF0793K1
RC0402FR-07953RL
RTT029531FTH
YC124-JRG070R
RA03100RF001
CN24FTN1000
LVT04R0100FER
RBL10FTR050