ISL6444 Datasheet, PDF (14/18 Pages) Intersil Corporation – Dual PWM Controller with DDR Memory Option for Gateway Applications

ISL6444
R9
100k
C1
1µF
CR1
+V2_5S
(3A)
Q1
1/2 IRF7313
C6
0.1µF
L1
4.7µH
+
R3
C8
330µF
Q2
2/2 IRF7313
R5
C3
0.01µF
SOFT1
VIN
12 ¹⁴
VCC
28 17
C4
0.01µF
SOFT2
BOOT1
6
BOOT2
23
UGATE1
PHASE1
R1 _ISEN1
2k
LGATE1
PGND1
VSEN1
VOUT1
EN1
PG1
R7 OCSET1
5
24
4
25
7
22
ISL6444
2
27
3
26
10
19
9
20
8
21
15
16
11
1
18
13
UGATE2
PHASE2
ISEN2 ^R2
2k
LGATE2
PGND2
VSEN2
VOUT2
EN2
PG2/REF
OCSET2 R8
GND
DDR
CR2
+ _C2
56µF
+5.0V_cc
GND
Q3
1/2 IRF7313
C7
0.1µF
L2
4.7µH
+V1_8
(2A)
C9
Q4
330µF
2/2 IRF7313
+
R4
R6
FIGURE 10. DUAL OUTPUT APPLICATION CIRCUIT FOR TWO-STEP CONVERSION
14