THE SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATES
SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION.

FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS

ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR
THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC.
1uF
10V
C9817
10uF
10V
C9815
3.9K
1%
R9811
10uF
16V
C9819
4.3K
1%
R9810
+3.3V_FRC
10uF
16V
C9820
560pF
50V
C9818
10K
R9809
+1.5V_FRC_DDR
THERMAL
AP7173-SPG-13 HF(DIODES)
EAN41406705
IC9803
3
VCC
2
PG
4
EN
1
IN
5
GND
6
SS
7
FB
8
OUT
9
[EP]
1K
1%
R9812
0.1uF
16V
C9816
1uF
10V
C9806
10uF
16V
C9802
100pF
50V
C9804
BLM18PG121SN1D
L9802
0.1uF
16V
C9810
THERMAL
TPS54327DDAR
IC9802
3
VREG5
2
VFB
4
SS
1
EN
5GND
6SW
7VBST
8VIN
9
[EP]GND
22uF
10V
C9812
POWER_ON/OFF_1
10K
R9806
OPT
10uF
16V
C9801
10K
1%
R9807
10K
R9805
OPT
BLM18PG121SN1D
L9801
1uF
10V
C9805
THERMAL
TPS54327DDAR
IC9801
3
VREG5
2
VFB
4
SS
1
EN
5GND
6SW
7VBST
8VIN
9
[EP]GND
22uF
10V
C9811
0.1uF
16V
C9809
+1.26V_FRC
6.8K
1%
R9801 1K
1%
R9803
12K
1%
R9808

+3.3V_FRC

33K
1%
R9802 220
1%
R9804
22uF
10V
OPT
C9813
3300pF
50V
C9807
NR8040T3R6N
3.6uH
L9803
3300pF
50V
C9808
NR8040T3R6N
3.6uH
L9804
22uF
10V
OPT
C9814
+3.3V_FRC
10K
R9813
1uF
10V
C9821
330K
R9814
OPT
27pF
50V
C9803
1/16W
10K
5%
R9815
1uF
25V
C9822
POWER_ON/OFF_1
+12V/+15V
+12V/+15V
+12V/+15V

URSA5 Power Block

LB3AC

+1.5V_FRC

+1.5V of DDR&URSA5 uses same power line

Vout=0.6*(1+R1/R2)

TYPICAL 350mA
R2
R1
Vout=0.765*(1+R1/R2)
R2
3A
R1
Switching freq: 700K
R2
Vout=0.765*(1+R1/R2)
R1
3A
Switching freq: 700K

CORE +1.26V_FRC

TYPICAL 980mA
TYPICAL 300mA

+3.3V_FRC

2013. 01. 23

1515

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