10/53
XC9504
Series
Conditions: Light load (when coil current is discontinuous.)
Channel One: Step-Up DC/DC Converter Controller ICs
* MOSFET
Tr.1:
XP151A12A2
(N-ch Power MOSFET, TOREX)
Note: V
GS
is 12V so please be careful with the power supply
voltage.
SD1: MA2Q737
(Schottky diode, MATSUSHITA)
L1:
15
H
(D412F, TOKO, FOSC=300kHz)
22
H
(D412F, TOKO, FOSC=180kHz)
Please set so that the coil current is discontinuous.
C
L1
:
25V, 4.7
F
(Ceramic)
* NPN Tr.
Tr.1:
2SD1628
(SANYO)
Channel Two: Inverter DC/DC Converter
* MOSFET
Tr.2:
XP151A12C0
Note: V
GS
break down voltage of the XP151A12C0 is
12V so please be careful with the power supply
voltage.
SD2:
MA2Q737
(Schottky diode, MATSUSHITA)
L2:
22
H
(D412F, TOKO, FOSC=300kHz)
44
H
(D412F, TOKO, FOSC=180kHz)
Please set so that the coil current is discontinuous.
C
L2
:
10V, 4.7
F
(Ceramic)
* PNP Tr.
Tr.2:
2SA1213
(TOSHIBA)
(P-ch Power MOSFET, TOREX)
R
B1
:
500
Adjust in accordance with load &
Tr.’s hFE.
R
B1
<(V
IN
- 0.7) x (hFE/IC - R
EXTBH
)
(Ceramic)
C
B1
<
(2
π
x R
B1
x FOSC x 0.7)
R
B2
:
500
Adjust in accordance with load &
Tr.’s hFE.
R
B2
<(V
IN
- 0.7) x (hFE/IC - R
EXTBL
)
(Ceramic)
C
B2
<
(2
π
x R
B2
x FOSC x 0.7)
C
B1
:
Conditions: Light load (when coil current is discontinuous.)
Channel One: Step-Up DC/DC Converter Controller ICs
* MOSFET
Tr.1:
XP151A12A2
(N-ch Power MOSFET, TOREX)
Note: V
GS
break down voltage of the XP151A12A2
is 12V so please be careful with the power supply
voltage.
SD1: MA2Q737
(Schottky diode, MATSUSHITA)
2200pF
C
B2
:
2200pF
Channel Two: Inverter DC/DC Converter
* MOSFET
Tr.2:
XP151A12C0
Note: V
GS
break down voltage of the XP151A12C0 is
12V so please be careful with the power supply
voltage.
SD2:
MA2Q737
(Schottky diode, MATSUSHITA)
CRS02,
CMS02
L2:
15
H
(CDRH5D28, SUMIDA,
FOSC=300kHz)
22
H
(CDRH5D28, SUMIDA,
FOSC=180kHz)
C
L2
:
16V, 4.7
F
(Tantalum)
Increase capacity according to the equation below
when the step-up voltage ratio is large and output
current is high.
C
L
=(C
L
standard value) x (I
OUT2
(mA) / 300mA x
V
OUT2
/ V
IN
* PNP Tr.
Tr.2:
2SA1213
(TOSHIBA)
R
B2
:
500
Adjust in accordance with load &
Tr.’s hFE.
R
B2
<(V
IN
- 0.7) x (hFE/IC - R
EXTBL
)
C
B2
:
2200pF
(Ceramic)
C
B2
<
(2
π
x R
B2
x FOSC x 0.7)
(P-ch Power MOSFET, TOREX)
(Schottky diode, TOSHIBA)
L1:
15
H
(CDRH5D28, SUMIDA,
FOSC=300kHz)
(CDRH5D28, SUMIDA,
FOSC=180kHz)
(Tantalum)
22
H
C
L1
:
16V, 4.7
Increase capacity according to the equation below
when the step-up voltage ratio is large and output
current is high.
C
L
=(C
L
standard value) x (I
OUT1
(mA) / 300mA x
V
OUT1
/ V
IN
* NPN Tr.
Tr.1:
2SD1628
(SANYO)
R
B1
:
500
Adjust in accordance with load &
Tr.’s hFE.
R
B1
<(V
IN
- 0.7) x (hFE/IC - R
EXTBH
)
C
B1
:
C
B1
<
(2
π
x R
B1
x FOSC x 0.7)
F
NOTES ON USE
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