![background image](http://html1.mh-extra.com/html/viewsonic/vs15197/vs15197_service-manual_1021466052.webp)
+19V
+19V
+19V
DC-IN JACK
+19V
4.7uH
2.2uH
Power On sequencing
Iripple=(Vin-Vout)*Vout/(Vin*L*f)
EN0
ENC
REF
VREG3
VREG5
SMPS1
SMPS2
LOW
LOW
LOW
OFF
OFF
OFF
OFF
OFF
OFF
OFF
> 2.4V
> 2.4V
> 2.4V
ON
ON
ON
ON
ON
ON
ON
ON
O.C.P setup information
Output
14m_Max
14m_Max
63.4K
105K
5V
Mos Rds_on I_OCP OC_
∆
IL(A) Freq(KHz) Inductor
R_TRIP
3.3V
5
3.68
400
500
8.5
2.18
TDC = 3.5A
OCP = 6A
f = 400kHz
Rds(on)=14 mohm
R_TRIP1 = ( I_lim(6A) - 2.79A/2 ) * 14(mohm) * 10 / 10u
= 63.35K (ohm) ---> 63.4Kohm (PR125)
Vref=2V R1= (Vout-2) * R2 / 2
TDC = 6.35A
OCP = 8.5A
f = 500kHz
Rds(on)=14 mohm
R_TRIP2 = ( I_lim(8.5A) - 2.47A/2 ) * 14(mohm) * 10 / 10u
= 105.1K (ohm) ---> 105Kohm (PR136)
Vref=2V R1= (Vout-2) * R2 / 2
for Heat Sink
+5VPCU1
3V_UG
5V_UG
3V_PHASE
5V_LG
3V_LG
8223EN
8223TON
3V_BOOT
5V_BOOT
5V_PHASE
ENTRIP2
ENTRIP1
8
2
2
3
_
E
N
C
S
K
IP
AGND_DC/DC
AGND_DC/DC
AGND_DC/DC
VDD_5V0
VDD_3V3_PMU
AGND_DC/DC
VDD_3V3_SBY
VDD_5V0_SBY
AGND_DC/DC
AGND_DC/DC
AGND_DC/DC
AGND_DC/DC
AGND_DC/DC
VDD_SYS
VDD_SYS
VDD_5V0_SBY
VDD_5V0_SBY
VDD_5V0_SBY
+19VIN
+19VDC_IN
+19VDC_IN
VDD_SYS
1
H4
H-C315D138P2
H-C315D138P2
1
T142
PC18
0.22u/50V_6
PR20
0_4
1
2
PC15
4.7u/10V_6
1
2
PL17
HI0805R800R-10/5A
PC8
0.1u/50V_6
PR6
0_4
1
2
PC17
0.1u/50V_6
PR17
*0_4
1
2
PR8
1/F_6
1
2
PC85
2200p/50V_4
1
H5
H-C276D163P2
H-C276D163P2
1
PC7
10u/25V_1206
PR13
0_4
1
2
PR14
4.32K/F_4
PQ2
RQ3E070BNFU7TB
3
5
2
4
1
PL4
HI0805R800R-10/5A
PC11
10u/25V_1206
PR3
2.2/F_6
PC19
0.1u/50V_6
PC14
4.7u/10V_6
1
2
PR16
105K/F_4
PR19
0_4
1
2
1
H6
H-C276D163P2
H-C276D163P2
1
PR11
2.2/F_6
PC10
0.1u/50V_6
PQ3
RQ3E070BNFU7TB
3
5
2
4
1
PL1
HI0805R800R-10/5A
PR15
63.4K/F_4
PR9
6.65K/F_4
PR22
0_6
PC16
10u/25V_1206
PR5
200K/F_4
PL2
HI0805R800R-10/5A
+
PC25
150u/6.3V_3528
PR18
10.2K/F_4
PC23
0.1u/50V_6
PR21
*0_4
1
2
PL7
2.2uH/14A_11.5X10.3X4.5
PL3
HI0805R800R-10/5A
PL6
2.2uH/14A_11.5X10.3X4.5
PC81
0.1u/50V_6
1
H1
H-C315D169P2
H-C315D169P2
1
PC27
0.1uF/16V_4
PC24
2200p/50V_4
PR23
0_6
+
PC21
150u/6.3V_3528
PQ7
RQ3E100BSFU7TB
3
5
2
4
1
PU1
RT8223PZQW
R
E
F
3
TONSEL
4
V
R
E
G
5
1
7
EN0
13
V
R
E
G
3
8
V
IN
1
6
FB1
2
PGOOD
23
E
N
TR
IP
1
1
UGATE1
21
PHASE1
20
BOOT1
22
LGATE1
19
E
N
C
1
8
G
N
D
1
5
LGATE2
12
BOOT2
9
PHASE2
11
UGATE2
10
E
N
TR
IP
2
6
S
K
IP
S
E
L
1
4
FB2
5
OUT2
7
G
N
D
2
5
VOUT1
24
PR24
0_6
1
H2
H-C315D169P2
H-C315D169P2
1
PJ1
2DC2019-000121
1
2
3
4
5
6
7
PR12
6.65K/F_4
PL5
HI0805R800R-10/5A
PC12
0.1u/50V_6
PQ4
RQ3E100BSFU7TB
3
5
2
4
1
PR7
1/F_6
1
2
PC82
10u/25V_1206
PC80
0.1u/25V_4
1
H3
H-C315D169P2
H-C315D169P2
1
PC20
0.1u/50V_6
PC84
2200p/50V_4
PC26
2200p/50V_4
PC9
2200P/50V_4
PR10
2.2/F_6
PR4
100K/F_4
PC13
2200p/50V_4
51
Confidential - Do Not Copy
ViewSonic Corporation
VSD241/SD-A245/CDS245
Summary of Contents for VS15197
Page 8: ...2 Outline 7 Confidential Do Not Copy ViewSonic Corporation VSD241 SD A245 CDS245 ...
Page 64: ...6 1 Main Board 63 Confidential Do Not Copy ViewSonic Corporation VSD241 SD A245 CDS245 ...
Page 65: ...64 Confidential Do Not Copy ViewSonic Corporation VSD241 SD A245 CDS245 ...
Page 68: ...7 Exploded View 67 Confidential Do Not Copy ViewSonic Corporation VSD241 SD A245 CDS245 ...
Page 69: ...68 Confidential Do Not Copy ViewSonic Corporation VSD241 SD A245 CDS245 ...
Page 71: ...70 Confidential Do Not Copy ViewSonic Corporation VSD241 SD A245 CDS245 ...
Page 117: ...116 Confidential Do Not Copy ViewSonic Corporation VSD241 SD A245 CDS245 ...