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參數(shù)資料
| 型號(hào)： | MC33463H-50KT1 |
| 廠商： | MOTOROLA INC |
| 元件分類(lèi)： | 穩(wěn)壓器 |
| 英文描述： | VARIABLE FREQUENCY MICROPOWER DC-to-DC CONVERTER |
| 中文描述： | SWITCHING REGULATOR, 100 kHz SWITCHING FREQ-MAX, PSSO3 |
| 封裝： | PLASTIC, SOT-89, 3 PIN |
| 文件頁(yè)數(shù)： | 11/12頁(yè) |
| 文件大?。?/td> | 169K |
| 代理商： | MC33463H-50KT1 |
MC33463
11
MOTOROLA ANALOG IC DEVICE DATA
Figure 20. Design Equations
Calculation
Step–Down
Step–Up
Flyback
ton
D
f
osc
D
f
osc
D
f
osc
L
ton
(Vin
Vsat
(2IO)
VO)
(n)(Vin)2(ton)
PO
(n)(Vin)2(ton)
PO
IL(avg)
IL(pk)
IO
Iin
Iin
(Vin
Vsat
VO)(ton)
L
(Vin
Vsat)(ton)
L
(Vin
Vsat)(ton)
L
Vripple(pp)
IL
1
16foscCO
2
(ESR)2
1
2
(ton)(IO)
(CO)
(ton)(IO)
(CO)
The following converter design characteristics must be chosen:
Vin – Nominal Operating dc input voltage
VO – Desired dc output voltage
IO – Desired dc output current
Vripple(pp) – Desired peak–to–peak output ripple voltage. For best performance the ripple voltage should be kept to a low value since it will directly
affect line and load regulation. Capacitor CO should be a low equivalent series resistance (ESR) electrolytic designed for switching regulator
applications.
NOTE
: 1.
Vsat – Saturation voltage of the switching transistor.
n – Estimated circuit efficiency.
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