參數(shù)資料
型號： V048F060M040
廠商： Vicor Corporation
元件分類： DC/DC變換器
英文描述： VI Chip - VTM Voltage Transformation Module
中文描述： 六芯片- VTM電壓轉(zhuǎn)換模塊
文件頁數(shù)： 12/15頁
文件大小： 483K
代理商： V048F060M040
vicorpower.com
800-735-6200
VI Chip Voltage Transformation Module
V048K060T040
Rev. 1.0
Page 12 of 15
VI Chip Voltage Transformation Module
PRELIMINARY
Figure 21
— The PRM controls the factorized bus voltage, V
f
, in proportion to output current to compensate for the output resistance, Ro, of the VTM. The VTM
output voltage is typically within 1% of the desired load voltage (V
L
) over all line and load conditions.
-In
PC
VC
TM
+In
-Out
+Out
VTM
+Out
-Out
K
Ro
–Out
+In
–In
VC
PC
TM
IL
NC
VH
PR
SG
OS
NC
PRM-AL
L
O
A
D
Factorized
Bus (V
f
)
Vo = V
L
±
1.0%
(IoRo)
K
V
f
= V
L
+
K
Vin
R
OS
R
CD
FPA Adaptive Loop
Figure 22
— An external error amplifier or Point-of-Load IC (POLIC) senses the load voltage and controls the PRM output – the Factorized Bus – as a function of
output current, compensating for the output resistance of the VTM and for distribution resistance.
–Out
+In
–In
VC
PC
TM
IL
VH
SC
NC
SG
OS
NC
CD
PRM-AL
-In
PC
VC
TM
+In
-Out
+Out
VTM
+Out
-Out
K
Ro
Remote
Loop
Control
V
f
= f (Vs)
L
O
A
D
Factorized
Power Bus
Vo = V
L
±
0.4%
+S
–S
Vin
FPA Non-isolated Remote Loop
In Figures 21 – 23;
K = VTM Transformation Ratio
R
O
= VTM Output Resistance
V
f
= PRM Output (Factorized Bus Voltage)
V
O
= VTM Output
V
L
= Desired Load Voltage
FPA Isolated Remote Loop
VC
PC
IL
NC
VS
FB
PR
FG
NC
NC
NC
PRM-IF
+In
–Out
–In
-In
PC
VC
TM
+In
-Out
+Out
VTM
+Out
-Out
K
Ro
V
f
= f (Vs)
Factorized
Power Bus
Remote
Loop
Control
L
O
A
D
Vo = V
L
±
0.4%
+S
–S
Vin
Figure 23
—An external error amplifier or Point-of-Load IC (POLIC) senses the load voltage and controls the PRM output – the factorized bus – as a function of
output current, compensating for the output resistance of the VTM and for distribution resistance. The Factorized Bus voltage (V
f
) increases in proportion to load
current. The remote feedback loop is isolated within the PRM to support galvanic isolation and hipot compliance at the system level.
Application Note
(continued)
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