![](http://datasheet.mmic.net.cn/290000/XC9505_datasheet_16185209/XC9505_9.png)
External Components
Conditions : Light load (when coil current is discontinuous.)
Channel One (Step-Down DC/DC Converter Controller)
Channel Two (Inverter DC/DC Controller)
Tr 1 :
* MOSFET
XP152A12C0
Tr 2 :
* MOSFET
XP152A12C0
(TOREX P-Channel Power MOSFET)
(TOREX P-Channel Power MOSFET)
SD 1 :
L1 :
CRS02
10
μ
H
(Schottky , TOSHIBA)
(SUMIDA, CDRH4D18C,
TOKO, D412F, FOSC = 500kHz)
(SUMIDA, CDRH4D18C,
TOKO, D412F, FOSC = 300kHz)
(SUMIDA, CDRH4D18C,
TOKO, D412F, FOSC = 180kHz)
Please set so that the coil current is discontinous.
10V, 4.7
μ
F
(Ceramic)
SD 2 :
L2 :
CRS02
10
μ
H
(Schottky, TOSHIBA)
(SUMIDA, CDRH4D18C,
TOKO, D412F, FOSC = 500kHz)
(SUMIDA, CDRH4D18C,
TOKO, D412F, FOSC = 300kHz)
(SUMIDA, CDRH4D18C,
TOKO, D412F, FOSC = 180kHz)
Please set so that the coil current is discontinous.
10V, 4.7
μ
F
(Ceramic)
15
μ
H
15
μ
H
22
μ
H
22
μ
H
CL1 :
CL2 :
*PNP Tr
2SA1213
500
*PNP Tr
2SA1213
500
(TOSHIBA)
Adjust in accordance with load &
Tr.'s HFE
(TOSHIBA)
Adjust in accordance with load &
Tr.'s HFE
RB1 :
RB 2 :
CB1 :
2200pF
(Ceramic)
CB1
≤
(2
π
x RB2 x FOSC x 0.7)
CB 2 :
2200pF
(Ceramic)
CB2
≤
(2
π
x RB2 x FOSC x 0.7)
Conditions: Heavy load (when coil current is continous.)
Channel One (Step-Down DC/DC Converter Controller)
Channel Two (Inverter DC/DC Controller)
Tr 1 :
* MOSFET
XP162A12A6P (TOREX P-Channel Power MOSFET)
Note : VGS Breakdown Voltage of this Tr. is 12V so
please be careful with the power supply voltage.
Tr 2 :
* MOSFET
XP162A12A6P (TOREX P-Channel Power MOSFET)
Note : VGS Breakdown Voltage of this Tr. is 12V so
please be careful with the power supply voltage.
SD 1 :
MA2Q737
CMS02
10
μ
H
22
μ
H
47
μ
H
16V, 47
μ
F
Increase capacity according to the equation below
when the step-up voltage ratio is large and output
current is high.
(Schottky , MATSUSHITA)
(Schottky , TOSHIBA)
(SUMIDA, CDRH5D28, FOSC = 500kHz)
L2 :
(SUMIDA, CDRH5D28, FOSC = 300kHz)
(SUMIDA, CDRH5D28, FOSC = 180kHz)
(Tantalum)
SD 2 :
MA2Q737
CRS02, CMS02
10
μ
H
15
μ
H
22
μ
H
16V, 47
μ
F
Increase capacity according to the equation below
when the step-up voltage ratio is large and output
current is high.
(Schottky, MATSUSHITA)
(Schottky , TOSHIBA)
(SUMIDA, CDRH5D28, FOSC = 500kHz)
(SUMIDA, CDRH5D28, FOSC = 300kHz)
(SUMIDA, CDRH5D28, FOSC = 180kHz)
(Tantalum)
L1 :
CL1 :
CL2 :
CL = (CL standard value ) x (IOUT1 (mA) / 500mA x VOUT1 / VIN)
CL = (CL standard value ) x (IOUT2 (mA) / 150mA x VOUT2 / VIN)
*PNP Tr
2SA1213
500
*PNP Tr
2SA1213
500
(TOSHIBASANYO)
Adjust in accordance with load &
Tr.'s HFE
RB1
≤
(VIN-0.7) x (hFE/IC-REXTBL)
(TOSHIBA)
Adjust in accordance with load &
Tr.'s HFE
RB2
≤
(VIN-0.7) x (hFE/IC-REXTBL)
RB1 :
RB 2 :
CB1 :
2200pF
(Ceramic)
CB1
≤
(2
π
x RB2 x FOSC x 0.7)
CB 2 :
2200pF
(Ceramic)
CB2
≤
(2
π
x RB2 x FOSC x 0.7)
RB1
≤
(VIN-0.7) x (hFE/IC-REXTBL)
RB2
≤
(VIN-0.7) x (hFE/IC-REXTBL)
2ch. Step-Down / Inverting DC/DC Controller ICs
XC9505 Series
Note : VGS Breakdown Voltage of this Tr. is 12V so
please be careful with the power supply voltage.
Note : VGS Breakdown Voltage of this Tr. is 12V so
please be careful with the power supply voltage.
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