ISL6444 Datasheet, PDF (16/18 Pages) Intersil Corporation – Dual PWM Controller with DDR Memory Option for Gateway Applications

ISL6444
C1, C2
10µF
+5.6-24V_IN
GND
VDDQ
+2.5V
(6A)
R3
32k4
R4
18k2
R5
18k2
R6
18k2
CR1
Q1
1/2 IRF7313
C6
0.1µF
L1
4.7µH
+
C8
330µF
Q2
2/2 IRF7313
C10
0.01µF
+5.0V_cc
C3
0.01µF
SOFT1
VIN
12 ¹⁴
VCC
28 ₁₇ ^SOFT2
CR2
+
C5
10µF
BOOT1
6
BOOT2
23
UGATE1
PHASE1
R1 _ISEN1
680
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
499
LGATE2
PGND2
VSEN2
VOUT2
EN2
EN1
PG2/REF
OCSET2
Q3
1/2 IRF7313
C7
0.1µF
L2
1.5µH
VTT
+1.25V
(3A)
C9
+
Q4
330µF
2/2 IRF7313
VREF
1.25V
(10mA)
GND
DDR
VCC
FIGURE 12. APPLICATION CIRCUIT FOR COMPLETE DDR MEMORY POWER SOLUTION WITH ONE-STEP CONVERSION
16