ISL6353 Datasheet, PDF (25/30 Pages) Intersil Corporation – Multiphase PWM Regulator for VR12 DDR Memory Systems

ISL6353
Table 6 shows the definition of PROG1. PROG1 defines the
maximum output current setting in the IMAX register of the
ISL6353.
TABLE 6. DEFINITION OF PROG1
R_PROG1
(Ω)
158
I_{MAX 3-PHASE}
MODE ^(A)
99
I_{MAX 2-PHASE}
MODE^(A)
66
I_{MAX 1-PHASE}
MODE ^(A)
33
475
90
60
30
787
84
56
28
1100
81
54
27
1430
75
50
25
1740
69
46
23
2050
66
44
22
2370
60
40
20
2870
54
36
18
3480
51
34
17
4120
45
30
15
4750
39
26
13
Table 7 shows the definition of PROG2. PROG2 defines the boot
voltage, enable/disable droop and the working mode for PS1.
R_PROG2
(Ω)
TABLE 7. DEFINITION OF PROG2
DROOP
WORKING MODE
AT PS1
V_BOOT
(V)
158
Enabled
1-phase CCM
0
475
Enabled
787
Enabled
1- phase CCM
1-phase CCM
1.20
1.35
1100
1430
Enabled
Enabled
1- phase CCM
2-Phase CCM (3-Phase
Configuration)
1-Phase CCM (2-phase
configuration)
1.50
1.50
1740
Enabled
2-Phase CCM (3-Phase
Configuration)
1-Phase CCM (2-phase
configuration)
1.35
2050
Enabled
2-Phase CCM (3-Phase
Configuration)
1-Phase CCM (2-phase
configuration)
1.20
2370
Enabled
2-Phase CCM (3-Phase
0
Configuration)
1-Phase CCM (2-Phase
configuration)
2870
Disabled
2-Phase CCM (3-Phase
0
Configuration)
1-Phase CCM (2-Phase
configuration)
TABLE 7. DEFINITION OF PROG2 (Continued)
R_PROG2
(Ω)
DROOP
WORKING MODE
AT PS1
3480
Disabled
2 phase CCM (3-phase
Configuration)
1-Phase CCM (2-phase
configuration)
4120
Disabled
2 phase CCM (3-phase
Configuration)
1-Phase CCM (2-phase
configuration)
4750
Disabled
2 phase CCM (3-phase
Configuration)
1-Phase CCM (2-phase
configuration)
5360
Disabled
1 phase CCM
6040
Disabled
1 phase CCM
6650
Disabled
1 phase CCM
7500
Disabled
1 phase CCM
V_BOOT
(V)
1.20
1.35
1.50
1.50
1.35
1.20
0
SVID ADDRESS Setting
The SVID address of ISL6353 can be programmed by changing
the resistor connected to the ADDR pin. Table 8 shows the SVID
address definition.
TABLE 8. SVID ADDRESS DEFINITION
R_ADDR
(Ω)
158
ADDRESS
0
475
1
787
2
1100
3
1430
4
1740
5
2050
6
2370
7
2870
8
3480
9
4120
A
4750
B
5360
C
6040
D
External Control of VOUT and Power State
VSET1/2, PSI
For additional design flexibility, the ISL6353 has 3 pins that can be
used to set the output voltage and power state of the regulator
with external signals independent of the serial communication bus
register settings.
25
September 15, 2011
FN6897.0