SI9122 Datasheet, PDF (17/17 Pages) Vishay Siliconix – 500-kHz Half-Bridge DC-DC Converter With Integrated Secondary Synchronous Rectification Drivers

V_CC
4
5.6
7, 8
1, 2, 3
C17
Q5
0.1 mF
V_IN
Si4886DY
C2
1 mF
50 V
+ C1 + C4
15 mF
15 mF
50 V
50 V
5.6
7, 8
T1 1, 2
4
1, 2, 3
Q6
Si4886DY
5, 6
L_X
D4
30BQ040
R14
C15
R13
15 W
800 mW
11, 12
3.3 W 1000 pF
C20
680 pF
100 V
7, 8
9, 10
R15
C16
3.3 W 1000 pF
D5
30BQ040
3, 4
EPC19
5.6
7, 8
1, 2, 3
C5
1 mF
50 V
+ _C6 + _C7
15 mF
15 mF
50 V
50 V
5.6
7, 8
Q7
4 ^Si4886DY
1, 2, 3
Q8
4 ^Si4886DY
2
Q10B
3
4
C18
0.1 mF
SRH
SRL
V_CC
EP
C21
0.047 mF
25 V
T2 6
1
5
3
4
EP7
D9
3
2
1
BAV99
D10
3
2
1
BAV99
6
1
Q10A
Si3552DV
5
2
Q7B 4
Q7A 6
5
Si3552DV
3
R16
10 W
3
1
D8
1
BAS19
T3
LEP-9080
5
4
7, 8, 9
1, 2, 3
3.3 V
D7
30BQ040
C22
47 mF
10 V
C23
47 mF
10 V
C24
47 mF
10 V
C32
10 mF
6.3 V
R17
NU
P4
3.3 V
1
15 A
P5
D6
MBR0520
C19
4.7 mF
16 V
1
C33
0.1 mF
C25
0.033 mF
R21
51 W
R19
3.9 kW
R26
5.6 kW
R18
C26
0.1 mF
300 kW ⁽⁵⁾
7
U3
(3)
AD820 5
3
6
+
(1) ₈
−
2
1
U03
(4)
LM7301 ₄
(2)
C28
C27
1000 pF 0.1 mF
R25
2 kW
1
2
R20
20 kW
3
U2
MOC207
6
1
5
2
R24
1 MW
7
3.3 V
TP1
1
R22
33 kW
R23
18.6 kW
P6
1
PGND
P7
1
PGND
C34, 0.1 mF