19190_522_110909.eps
110909
DC-DC Buck & Converter
B20 B20
2011-09-01
2
715G5151
DC-DC Buck & Converter
R733
10K +-1% 1/16W
C725
10N 50V
C737
10uF 25V
5V_BUCK
24V_12V_SW
C732
180P 50V
OPWRSB4,21
FB716
120R/3000mA
1 2
OPWRSB
D702
SX34
1 2
C734 1uF 25V
V1 = 1+ (8.2/10) = 1.82
V2 = 1+ (5.2/10) = 1.52
D703
NC/RB160M-60TE25
1 2
VCCK
C731
1uF 50V
C724
10U 16V
FB718
120R/3000mA
1 2
5V_SW
C717
10U 16V
1V8 or 1V5 DDR Power : DDRV
R740 4K7 1/16W 5%
C738
NC/1UF 10V
FB724
120R/3000mA
1 2
DDR3 = 900mA
DVDD3V3
R742
10K +-1% 1/16W
SoC_AVDD3V3 = 740 mA
5V_SW
Vo = 1+(R729/R730)
FB723
120R/3000mA
1 2
C721
10U 16V
+
C729
100UF 50V
3V3_BUCK
C727
10U 16V
C741
10U 16V
C719
10N 50V
Vo = 1+ (R732/R733)
FB722
NC/120R/3000mA
1 2
C746 NC/10N 50V
R745
1K 1/16W 5%
3V3 Main Power :
5V_BUCK
R753
0R05 1/16W
OPWRSB
C748
10U 16V
C723
1UF 10V
R741
12KOHM +-5% 1/16W
R736
56K 1%
R730
10K +-1% 1/16W
L701
2.2uH
C747
100N 16V
C736
10uF 25V
C743
100N 16V
R729
23.7K 1%
C720
10U 16V
FB719
120R/3000mA
1 2
+12V
C733
1.2nF 50V
C739
NC/1UF 10V
R731
1K 1/16W 5%
18V4_BUCK
L703
15uH
R732
8.2K 1%
U701 SC189ASKTRT
4
1
3
5
2
VOUT
VIN
EN
LX
GND
R732 = 8.2K
R732 = 5.2K (using 5.1k)
C718
10N 50V
FB725
NC/120R/3000mA
1 2
BUCK_USB2
DDR2 = 650mA
H: ON
L: OFF
5V_TUNER
5VSB U704 G5657F12U
3
5
8
2
7
6
1
4
9
LX
FB
SS
IN
EN
COMP
NC
GND
Thermal Pad
C735
100N 50V
U703
AOZ1242AI
1
2
3
45
6
7
8
LX
BST
GND
FBCOMP
EN
VIN
VBIAS
FB717
120R/3000mA
1 2
R735
15K 1/16W 5%
Soc Core Power : 1.15V (3A)
5V_BUCK
3V3_BUCK
C744
180P 50V
R737
10K 1%
3V3SB
C745
2N2 50V
AVDD3V3
FB720
120R/3000mA
1 2
R743
2.7K 1/16W 1%
L702
2.2uH
GND 4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,24
C726
10N 50V
3V3_BUCK
U702 SC189ASKTRT
4
1
3
5
2
VOUT
VIN
EN
LX
GND
FB721
NC/120R/3000mA
1 2
C722
1UF 10V
FB715
120R/3000mA
1 2
OPWRSB
FB726
120R/6000mA
1 2
C728
10U 16V
HDMI_SW = 120 mA
R734
47K 1/16W 5%
C730
1uF 50V
C742
10U 16V
D704
SX34
1 2
= 1+(23.3/10) = 3.33
L704
4.7UH
R728
1K 1/16W 5%
C749
10U 16V
USB2.0 = 1000mA
Tuner = 450mA
DDRV
5V2 Main Power (3A)
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