參數(shù)資料
型號： SC4901
廠商： Semtech Corporation
英文描述： COMBI-SYNC Secondary Side Synchronous Rectifier and Regulator
中文描述： 客貨兩用，同步二次側(cè)同步整流和穩(wěn)壓器
文件頁數(shù)： 18/20頁
文件大?。?/td> 598K
代理商： SC4901
18
2005 Semtech Corp.
www.semtech.com
SC4901
POWER MANAGEMENT
Application Information (Cont.)
OUTPUT
QF
DF
C
T
DR
QS
DS
QR
L
PRIMARY
SINGLE ENDED
FORWARD
CONVERTOR
GATE F
GATE R
Vrec
Vsec
Ind Current
Sec Current
Vsec
Transformer Sec Voltage
Forward MOSFETS QS, QF
Vrec
WITH POST REGULATION
Inductor Current
Transformer Secondary Current
GATE F
Gate Drive for
RECTIFIED SECONDARY VOLTAGE
Gate Drive For QR
GATE R
T3
T2
T1
T0
Secondary Side Controller
Pulse Width Modulated by
-VE
+VE
T2 : QS, QF are turned OFF.
This edge is Pulse Width Modulated to post - regulate the output.
T3 : QR is turned ON
T3 - T2 : Turn OFF delay to prevent shoot through
T1 : Forward MOSFETs QS and QF are switched ON
T1 - T0 : Forward delay to prevent shorting the secondary winding
T0 : Transformer secondary voltage goes +ve, QR is turned OFF at this instant.
FIg 11) Theoretical waveforms of Combi Sync topology
相關(guān)PDF資料
PDF描述
SC4901ITSTRT COMBI-SYNC Secondary Side Synchronous Rectifier and Regulator
SC4905A_06 High Performance Voltage Mode PWM Controller
SC4905AIMSTR High Performance Voltage Mode PWM Controller
SC4905AIMSTRT High Performance Voltage Mode PWM Controller
SC4905B High Performance Voltage Mode PWM Controller
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
SC4901ITSTRT 制造商:Semtech Corporation 功能描述:Secondary Side PWM Cntrlr SYNC POST REGUL 1MHz 16-Pin TSSOP T/R 制造商:Semtech Corporation 功能描述:Controller IC
SC4905A 制造商:SEMTECH 制造商全稱:Semtech Corporation 功能描述:HIGH PERFORMANCE VOLTAGE MODE PWM CONTROLLER
SC4905A_06 制造商:SEMTECH 制造商全稱:Semtech Corporation 功能描述:High Performance Voltage Mode PWM Controller
SC4905AIMSTR 制造商:Semtech Corporation 功能描述:IC, VOLTAGE MODE PWM CTRL, 12V, MSOP-10; Input Voltage:48V; Output Voltage:500mV; Output Current:1mA; Supply Voltage Min:0V; Supply Voltage Max:12V; Digital IC Case Style:MSOP; No. of Pins:10; Frequency:1MHz; Control Mode:Voltage ;RoHS Compliant: No
SC4905AIMSTRT 制造商:Semtech Corporation 功能描述:Voltage Mode PWM Controller 10-Pin MSOP T/R
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