ESQUEMAS ELÉTRICOS PCI Principal DL2970(A)W
5V Standby Power(option) 3.3V Standby Power
3
AGND
PGND
8 R14
4
4
51K/0402/1%
R18
1N4148/SMD223/NC R7 D86 20K/0402/5%/NC
R2
CA2 +
C6
470uF/16V/CE8 0.1uF/0402/16V
1
1nF/0402/16V 0.1uF/0402/16V 1nF/0402/16V R6 15K/0402/5%
R1
U10
3
C19 C16
FB
10uH_4A
IN
C17
SS
NC
L1
9
OUT
7
LX
ADJ
CE2 220uF/16V/CE6.3 + C7 0.1uF/0402/16V
R29 2 33K/0402/5% VIN R2 6 EN 100K/0402/5% 5 COMP
+5V_Standby
2
U50 AOZ1034PI/SOP8
1
+12V_PWR
+5V_Standby
+3.3V_Standby
AMS1117-3.3/SOT23
R39 1.2K/0402/5%/NC
9.1K/0402/1%
Vout=0.8V*(1+R1/R2)
C71 C73 2.2uF/0603/16V 2.2uF/0603/16V
R41 0R/0402/5%
C72 C70 0.1uF/0402/16V 0.1uF/0402/16V
If power input has change, this part will do option
VDDC POWER
C22
3
100uF/16V/CE6.3 1nF/0402/16V 0.1uF/0402/16V 0.1uF/0402/16V R28 15K/0402/5%
SS AGND
NC FB PGND
8 4
4
R11 100R/0402/5% R46
R1
CA4 220uF/16V/CE6.3 +
1 DCDC R47
C13 0.1uF/0402/16V
4.7K/0402/1%
R2
10K/0402/1%
U9 AMS1117-3.3/SOT23
3
7
4.7uH_3A
VCC_VSENSE
EN COMP
L4
IN
C14
5
9
OUT
CE5 +
C23
6
LX
VDDC1.15V
ADJ
R44 100K/0402/5%
VIN
1.8A
2
2
U52 AOZ1051PI/SOP8
1
+12V_NORMAL
+5V_Normal R48
+3.3V_Normal
1.2K/0402/5%/NC C49
C55
2.2uF/0603/16V 2.2uF/0603/16V C51 0R/0402/5% C50 0.1uF/0402/16V 0.1uF/0402/16V R49
Vout=0.8V*(1+R1/R2)
25