參數(shù)資料
型號(hào)： AN-30
英文描述： TOPSwitch-GX Forward Design Methodology
中文描述： 的TOPSwitch - GX系列正向設(shè)計(jì)方法
文件頁數(shù)： 23/40頁
文件大小： 311K
代理商： AN-30
AN-30
23
B
12/02
N
P
P
O
P
RUVA
r
1
r
2
R
A
R
AB
R
B
R
C
R
D
R
LMAIN
R
P
R
SMAIN
R
UVA
R
UVB
R
UVC
t
C
t
H
t
R(ON)
T
S
v
1
v
A
v
B
v
C
V
ACHOLDUP
V
ACMAX
V
ACMIN
V
ACNOM
V
ACUV
V
ACUVL
V
ACUVX
V
AUX
V
AUXREF
V
BZL
V
DAUXC
V
DB
V
DINDC
V
DINDF
V
DMAIN
Name in AN-30
Description
Number of turns for the primary winding on the transformer.
Total output power of the power supply.
Power dissipation in the resistor R
UVA
.
Intermediate variable to compute values of components in circuit for external reduction of
DC
MAX
.
Intermediate variable to compute values of components in circuit for external reduction of
DC
MAX
.
Resistor in the network that sets the line under-voltage threshold V
ACUV
.
Intermediate variable to compute values of components in circuit for external reduction of
DC
MAX
.
Resistor in the network that sets the line under-voltage threshold V
ACUV
.
Resistor in circuit for external reduction of DC
MAX
.
Resistor in circuit for external reduction of DC
MAX
.
Resistance of the winding of the output inductor for the main output.
Resistance of the primary winding of the transformer.
Resistance of the secondary winding for the main output.
Resistor in optional external under-voltage lockout circuit.
Resistor in optional external under-voltage lockout circuit.
Resistor in optional external under-voltage lockout circuit.
Conduction time of the bridge rectifier.
Holdup time.
Remote ON Delay of TOPSwitch-GX (See data sheet).
Switching period of TOPSwitch-GX equal to 1/f
S
.
Intermediate variable to compute resistors in optional external under-voltage lockout circuit.
Intermediate variable to compute values of D
XMAX
.
Intermediate variable to compute values of D
XMAX
.
Intermediate variable to compute values of D
XMAX
.
Steady state AC input voltage that corresponds to the beginning of the holdup time.
Maximum steady-state AC input voltage.
Minimum steady-state AC input voltage.
AC input voltage where independent output voltages should be at their nominal values.
Minimum AC input voltage where converter must start.
AC input voltage where the converter shuts off with optional external UVLO circuit.
AC input voltage where the optional external UVLO circuit enables the TOPSwitch-GXwhen
input voltage is rising from zero.
Voltage on the auxiliary output.
Reference voltage for the auxiliary output in the DC stacked topology. This is usually V
MAIN
.
Intermediate variable in the computation of components for DC
MAX
reduction circuit.
Voltage drop on the catch diode of the auxiliary output when the diode is conducting.
Voltage drop on the diode of the bias winding when the diode is conducting.
Voltage drop on the catch diode of the independent output when the diode is conducting.
Voltage drop on the forward diode of the independent output when the diode is conducting.
Voltage drop on the catch diode and the forward diode of the main output when the two are
identical.
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