參數(shù)資料
型號(hào)： SC4901ITSTRT
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(yè)數(shù)： 18/20頁(yè)
文件大?。?/td> 598K
代理商： SC4901ITSTRT
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
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
SC4905BIMSTR High Performance Voltage Mode PWM Controller
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
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
SC4905AMSTR 制造商:SEMTECH 制造商全稱:Semtech Corporation 功能描述:HIGH PERFORMANCE VOLTAGE MODE PWM CONTROLLER
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