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AN2359 Datasheet(PDF) 13 Page - STMicroelectronics

Part # AN2359
Description  Double output Buck-Boost converter with VIPerX2A
PDF  18 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

AN2359 Datasheet(HTML) 13 Page - STMicroelectronics

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AN2359
Application example nº 2
13/18
Also bleeder resistors or zener diodes may be mandatory at no load in order to improve the
regulation and avoid output overvoltage.
Figure 15.
Converter schematic
Table 8.
Component list
Reference
Value
Description
RFUSE
22
Ω, 1/2W
Metallic oxide resistor
RSN, R1
1.2K
Ω, 1/4W
Resistor
R2
22
Ω, 1/4W
Resistor
R3
100
Ω, 1/4W
Resistor
Rb1, Rb2
Optional resistor
CSN
0.1
µF, 400V
Polyester capacitor
C1, C2
10
µF, 400V
Electrolytic capacitor
C3
33
µF, 25V
Electrolytic capacitor
C4
47nF, 35V
Ceramic capacitor
C6
22
µF, 16V
Electrolytic capacitor
C7
470
µF, 25V
Electrolytic capacitor
C8
100
µF, 16V
Electrolytic capacitor
D1
Diode 1N4007
D2, D4, D5
Diode BYT11-400 (ultrafast)
DZ1
Diode Zener 18V
DZ2
Diode Zener 4.3V
Q1
PNP transistor BC327
L1
470
µH
Axial inductor



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