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AX34063AP Datasheet(Fiches technique) 3 Page - List of Unclassifed Manufacturers

Numéro de pièce AX34063AP
Description  DC-to-DC Converter Integrate Circuit Devices
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Fabricant  ETC [List of Unclassifed Manufacturers]
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Page No. : 3/7
AVANTICS - AX34063AP, AX34063AS
Specification No.: 050308-FE0007
Application Information
Design Formula Table
Calculation
Step-Down
Step-Up
Voltage-Inverting
t
on/toff
(V
out+VF)/(Vin(min) -Vsat-Vout)(Vout+VF-Vin(min))/(Vin(min)-Vsat)(|Vout|+VF)/(Vin(max)-Vsat)
(t
on+toff) max
1/F
min
1/F
min
1/F
min
C
T
4*10-5t
on
4*10-5t
on
4*10-5t
on
I
C(sw)
2*I
out(max)
2*I
out(max)(ton+toff/toff)2*Iout(max)(ton+toff/toff)
R
S
0.3/I
C(sw)
0.3/I
C(sw)
0.3/I
C(sw)
L
(min)
(V
in(min)-Vsat/Ipk(sw))*ton(max)
(V
in(min)-Vsat/Ipk(sw))*ton(max)
(V
in(min)-Vsat/Ipk(sw))*ton(max)
C
O
(I
pk(sw)*(ton+toff))/(8*Vripple(P-P))Iout*ton/Vripple(P-P)
I
out*ton/Vripple(P-P)
V
sat: Saturation voltage of the output switch.
V
F: Forward voltage drop of the ringback rectifier.
The following power supply characteristics must be chosen:
V
in: Nominal input voltage.
V
out: Desired output voltage. |Vout|=1.25*(1+RB/RA)
I
out: Desired output current
F
min: Minimum desired output switching frequency at the selected values for Vin and Iout.
V
ripple(P-P): Desired peak to peak output ripple voltage in practice, the calculated value will need to be increased due to the capacitor
equivalent series resistance and board layout. The ripple voltage should be kept to a low value since it will directly effect the line
and load regulation.




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