SI9138 Datasheet, PDF (8/14 Pages) Vishay Siliconix – Multi-Output, Individual On/Off Control Power-Supply Controller

Si9138
Vishay Siliconix
New Product
STANDARD APPLICATION CIRCUIT
V_IN
5.5 ~ 30 V
C7
33 mF
Q1
Si4416DY
C1
0.1 mF
CMPD2836
V_IN
D1A
V_L
BST₃
DH₃
LX₃
BST₅
DH₅
LX₅
+3.3 V_OUT
R₁
0.02 W
L2
10 mH
DL₅
D1B
C2
0.1 mF
C4
33 mF
Q2
Si4416DY
L1, 10 mH
Q4
Si4812DY
+5 V 30 mA
C5
4.7 mF
R₂
0.02 W
+5 V_OUT
C3
330 mF
C6
330 mF
Q3
Si4812DY
DL₃
CS₅
FB₅
PGND*
CS₃
V_L
BSTFY
DHFY
LXFY
D3
CMPD2836
C8
0.1 mF
C9
4.7 mF
Q5
Si2304DS
L3, 10 mH
D4, BYS10-35
20 kW
D2, BYS10-35
FB₃
RESET
DLFY
CSP
Q6
Si2304DS
V_BUCK-BOOST
+5 to +12 V
C10
100 mF
GND*
ON3
0.2 W
R₃
R₅
ON5
CSN
FBFY
+3.3 V
1 mA
REF
COMP
C11
GND
PGND
C12
R₆
1 mF
120 pF
*PGND and GND planes should be connected to a single point (star) ground.
FIGURE 1.
www.vishay.com
8
where:
ǒR5 ) R6Ǔ
VBUCK_BOOST +
R6
VREF
Document Number: 71446
S-20642—Rev. B, 13-May-02