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AP3603 Datasheet(PDF) 14 Page - Asahi Kasei Microsystems

Part # AP3603
Description  High Power Dual Output Step-Up DC-DC Controller
PDF  18 Pages
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Manufacturer  AKM [Asahi Kasei Microsystems]
Direct Link  http://www.akm.com
Logo AKM - Asahi Kasei Microsystems

AP3603 Datasheet(HTML) 14 Page - Asahi Kasei Microsystems

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[AP3603]
015000004-E-02
2015/07
- 14 -
15. Recommended External circuits
■ Recommended External Circuit of Dual Output
1
1
2
2
3
3
4
4
5
5
6
6
D
D
C
C
B
B
A
A
Title
Num ber
Revision
Size
A4
Date:
2014/09/12
Sheet
of
File:
C:\Users\..\AP3603do_140912.SchDoc
Drawn By :
Vin
PWON
C1
CH-1 Vout
L1
R1
R2
L2
R3
R4
R5
R6
C2
C3
C4
C5
C6
C7
C8
C9
R8
R9
R10
R11
D1
D2
M1
M2
R7
R12
V8
FB2
CC2
SS
GND2
PWON
RT
GND1
RSP1
RSP2
RSN1
RSN2
FSYN
DRV1
DRV2
VDD
V4
CC1
FB1
MDC
CH-2 Vout
Figure 12. Dual Output Step Up Application
■ Parts List
(Vin=6.4V～12V、Vout=12V、Io=17A、f=400kHz)
Parameter
Symbol
Condition
Input capacitor
C1
10uF×10parallel
Output Capacitor
C2
330uF/16V×4parallel
10uF/25V(MLCC)x2parallel
Output Capacitor
C3
330uF/16V×4parallel
10uF/25V(MLCC)x2parallel
Bypass capacitor
C4
0.1uF
Capacitor for V8
C5
2.2uF
Capacitor for V8 Middle point
C6
0.22uF
Capacitor for soft start
C7
0.1uF
Phase Compensation Capacitor
C8
6800pF
Phase Compensation Capacitor
C9
6800pF
Current Sense Resistor
R1
2mΩ
Current Sense Resistor
R2
2mΩ
CH1 feedback resistor(H)
R3
110kΩ
CH1 feedback resistor(L)
R4
47kΩ
CH2 feedback resistor(H)
R5
110kΩ
CH2 feedback resistor(L)
R6
47kΩ
Frequency setting resistor
R7
75kΩ
CH1 phase compensation resistor
R8
4.7kΩ
CH1 phase compensation resistor
R9
47kΩ
CH2 phase compensation resistor
R10
4.7kΩ
CH2 phase compensation resistor
R11
47kΩ
Catcher diode
D1,D2
40V30A
Power inductor
L1,L2
2.2uH
N-channel MOSFET
M1,M2
40V100A



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