參數(shù)資料
型號(hào)： MR2900
廠商： Shindengen Electric Manufacturing Company, Ltd.
英文描述： Provision for Standby mode operation Partial Resonance Power Supply IC Module
中文描述： 撥備待機(jī)模式操作局部共振電源IC模塊
文件頁(yè)數(shù)： 14/19頁(yè)
文件大?。?/td> 226K
代理商： MR2900
Shindengen Electric MFG.CO.,LTD
- 14 -
5.2.2 Standard Design Calculations
1
Minimum DC input voltage
AC(min)
V
×
DC(min)
V
1.2
=
[V]
2
Maximum DC input voltage
AC(max)
V
×
DC(max)
V
2
=
[V]
3
Oscillation cycle
(min)
f
(max)
T
1
=
[s]
4
Maximum ON period
(min)
f
on(max)
t
D
=
[s]
5
Maximum OFF period
q
F1
O1
P
ON(max)
)
V
+
DC(min)
(V
×
S1
N
off(max)
t
t
t
V
×
N
+
×
=
[s]
6
Resonance period
2
C
L
2
π
t
q
P
q
×
=
[s]
7
Maximum load power
O(max)
I
O
O(max)
P
V
×
=
[W]
8
Maximum output power
(reference value)
O(max)
P
L
1.3
P
×
=
[W]
9
Peak collector current
D
V
×
η
P
2
I
DC(min)
L
CP
×
×
=
[A]
10
Primary coil inductance
CP
I
on(max)
t
DC(min)
V
P
L
×
=
[H]
11
Number of turns in primary coil
e
9
on(max)
t
×
DC(min)
V
P
A
Δ
B
10
×
N
×
=
[Turn]
12
Core gap
P
2
P
e
10
g
L
N
A
10
×
4
π
l
×
×
=
[mm]
The gap I
g
is the center gap value.
Review transformer core size and oscillation frequency and redesign if I
g
is 1mm or greater.
13
Number of turns
in control output coil
on(max)
t
DC(min)
V
q
on(max)
t
(min)
f
×
P
F1
O1
S1
)
t
1
(
N
)
V
(V
N
×
×
+
=
[Turn]
14
Number of turns
in non-control output coil
F1
O1
F2
O2
S1
S2
V
V
V
V
N
N
+
+
×
=
[Turn]
15
Number of turns in control coil
F1
O1
FNC
V
+
NC
V
S1
C
V
V
N
N
+
×
=
[Turn]
Consider the secondary diode forward voltage for each output when determining the number of turns in an output coil.
V
FNC
is the control coil voltage rectification diode forward voltage.
The reference value for determining the control coil voltage V
NC(min)
is 15V to 17V.
If the V
NC(min)
value is too small, start-up characteristics may deteriorate and start-up may become difficult.
If the V
NC(min)
value is too large, the over-voltage latch stop voltage V
OP
is able to be reached easily.
Check the V
NC(min)
voltage in an actual circuit during the design process to determine its optimum value.
相關(guān)PDF資料
PDF描述
MR2920 Provision for Standby mode operation Partial Resonance Power Supply IC Module
MR2940 Provision for Standby mode operation Partial Resonance Power Supply IC Module
MS52C181A 131,072-Word × 8-Bit STATIC RAM +1,048,576-Word × 8-Bit One Time PROM(128k字×8位靜態(tài)RAM+1M字×8位 OTPROM)
MS52C182A 65,536-Word × 16-Bit or 131,072-Word × 8-Bit STATIC RAM +524,288-Word × 16-Bit or 1,048,576-Word × 8-Bit One Time PROM(64k字×16位或128k字×8位靜態(tài)RAM+512k字×16位或1M字×8位 OTPROM)
MS81V06160 (401,408-word ⅴ 16-bit) FIFO memory
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