AP3603 Datasheet, PDF (1/18 Pages) Asahi Kasei Microsystems – High Power Dual Output Step-Up DC-DC Controller

[AP3603]
AP3603
High Power Dual Output Step-Up DC-DC Controller
1. General Description
The AP3603 is a dual output step-up DC-DC controller. The output voltage can be set up to 60V by an
external feedback resistor. A wide input range of 6.4V to 20V is available, which is possible to realize a high
power boost source from the battery or the other power sources. The AP3603 supports either 200W×2ch dual
outputs or 400W×1ch dual phase single output. PWM switching frequency is set from 40kHz to 500kHz by
an external resistor. As the protective functions, it has output over voltage protection and over current
protection. The AP3603 is housed in a space-saving 20-pin HTSSOP package.
2. Features
 Input Voltage Range 6.4 to 20V
 Oscillation Frequency Setting Range 40k to 500kHz（Set by external resistor）
 8V Gate Driver for External N-channel MOSFET（ON resistance : 3Ω)
 Over Temperature Protection
 Output Over Voltage Protection
 Quasi-Foldback Over Current Protection
 Accuracy of Feedback Voltage +3% /-2 % (Tj=-40～145℃)
 Dual Output or Dual Phase Single Output Application is Selectable
 Package 20-pin HTSSOP
1
A
R7
R9
B
R8
C8
C7
C9
R10
C
R11
PWON
R12
D
1
2
3
4
5
6
Vin
R1
C1
A
FSYN
RT
FB1
CC1
GND1
SS
CC2
FB2
PWON
MDC
2
RSP1
RSN1
DRV1
GND2
VDD
V8
V4
DRV2
RSN2
RSP2
3
C4
C5
C6
L1
D1
M1
M2
D2
Title
Size
A4
Date:
File:
L2
R2
Num be r
2014/09/12
C:\Users\..\AP3603do_140912.SchDoc
4
5
CH-1 Vout
R3
C2
B
R4
CH-2 Vout_C
R5
C3
R6
Revision
Sheet of
Drawn By :
D
6
Dual Output Application
1
A
R7
R9
B
R8
C8
C7
C9
R10
C
R11
PWON
R12
D
1
2
FSYN
RT
FB1
CC1
GND1
SS
CC2
FB2
PWON
MDC
2
3
RSP1
RSN1
DRV1
GND2
VDD
V8
V4
DRV2
RSN2
RSP2
3
4
5
R1
6
Vin
C1 ^A
C4
C5
C6
L1
D1
M1
M2
D2
Vout
R3
C2
B
R4
C
L2
Title
R2
Size
Num be r
Revision
A4
D
Date:
2014/09/12
Sheet of
File:
C:\Users\..\AP3603_140912.SchDoc
Drawn By :
4
5
6
Dual Phase Application
Applications
Power Amplifier
Booster 200W class
Booster 400W class
Input
Voltage
12V
6.4V
6.4V
Output
Voltage
20V
12V
12V
Output
Current
CH-1 7.5A
CH-2 7.5A
CH-1 17A
CH-2 17A
34A
Output
Power
CH-1 150W
CH-2 150W
CH-1 204W
CH-2 204W
400W
Circuit
Dual Output
Dual Output
Dual Phase Single Output
015000004-E-02
-1-
2015/07