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參數(shù)資料
| 型號(hào)： | MC34063 |
| 廠(chǎng)商： | 意法半導(dǎo)體 |
| 元件分類(lèi)： | DC/DC變換器 |
| 英文描述： | DC-DC CONVERTER CONTROL CIRCUITS |
| 中文描述： | DC - DC變換器控制電路 |
| 文件頁(yè)數(shù)： | 9/15頁(yè) |
| 文件大?。?/td> | 1483K |
| 代理商： | MC34063 |
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Calculation
Parameter
Step-Up
(Discontinuos mode)
V
out
+
V
F
V
in
(
min
)
V
in
(
min
)
V
sat
Step-Down
(Continuos mode)
V
out
+
V
F
V
in
(
min
)
V
sat
V
out
Voltage Inverting
(Discontinuos mode)
|
V
out
|
+
V
F
V
in
V
sat
t
on
/t
off
(t
on
+ t
off
)max
C
T
I
PK(switch)
R
SC
C
O
1/f
min
1/f
min
1/f
min
4.5x10
-5
t
on
2I
out(max)
[(t
on
/t
off
)+1]
0.3/I
PK(switch)
I
out
t
on
V
ripple
(
p
p
)
V
in
(
min
)
V
sat
I
PK
(
switch
)
4.5x10
-5
t
on
2I
out(max)
0.3/I
PK(switch)
I
PK
(
switch
)
(
t
on
+
t
off
)
8V
ripple
(
p
p
)
V
in
(
min
)
V
sat
V
out
I
PK
(
switch
)
4.5x10
-5
t
on
2I
out(max)
[(t
on
/t
off
)+1]
0.3/I
PK(switch)
I
out
t
on
V
ripple
(
p
p
)
V
in
(
min
)
V
sat
I
PK
(
switch
)
L(min)
t
on
(
max
)
t
on
(
max
)
t
on
(
max
)
NOTES:
V
sat
= Saturation voltage of the output switch
V
F
= Foward voltage drop of the output rectifier
THE FOLLOWING POWER SUPPLY CHARACTERISTICS MUST BE CHOSEN:
V
in
= Nominal input voltage
V
out
= Desired output voltage, |V
out
| = 1.25(1+R
2
/R
1
)
I
out
= Desired output current
f
min
= Minimum desired output switching frequency at the selected values of Vin and Io
V
ripple
= Desired peak to peak output ripple voltage. In practice, the calculaed capacitor value will and to be increased due to its equivalent
series resistance and board layout. The ripple voltage should be kept to a low value since it will directly affect the line and load regulation.
Step-up With External NPN Switch
MC34063A/E
9/15
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| MC34063E | DC-DC CONVERTER CONTROL CIRCUITS |
| MC34063EB | DC-DC CONVERTER CONTROL CIRCUITS |
| MC34063EBD | DC-DC CONVERTER CONTROL CIRCUITS |
| MC34063EBD-TR | DC-DC CONVERTER CONTROL CIRCUITS |
| MC34063EBN | DC-DC CONVERTER CONTROL CIRCUITS |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MC34063A | 制造商:Unisonic Technologies Co Ltd 功能描述:ELECTRONIC COMPONENT |
| MC34063A_02 | 制造商:AIC 制造商全稱(chēng):Analog Intergrations Corporation 功能描述:Industrial Standard, Universal DC/DC Converter |
| MC34063A_07 | 制造商:ONSEMI 制造商全稱(chēng):ON Semiconductor 功能描述:1.5 A, Step−Up/Down/ Inverting Switching Regulators |
| MC34063A_08 | 制造商:FAIRCHILD 制造商全稱(chēng):Fairchild Semiconductor 功能描述:SMPS Controller |
| MC34063A_10 | 制造商:ONSEMI 制造商全稱(chēng):ON Semiconductor 功能描述:1.5 A, Step−Up/Down/ Inverting Switching Regulators |
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