MAX1544 Datasheet, PDF (41/42 Pages) Maxim Integrated Products – Dual-Phase, Quick-PWM Controller for AMD Hammer CPU Core Power Supplies

Dual-Phase, Quick-PWM Controller for
AMD Hammer CPU Core Power Supplies
R19
10Ω
V_CC
V_DD
C11
0.22µF
POL
D2
V+
1N4148
BST
OUTPUT
REF
(MASTER)
C_COMP2 RCOMP2
270pF 20kΩ
COMP
DH
U3
LX
R24
200kΩ
C14
100pF
R25
49.9kΩ
MAX1980 _DL
ILIM
PGND
GND
FLOAT
(300kHz)
TON
CS+
LIMIT
CS-
DD
TRIG
CM+
CM-
5V BIAS
C10 ^SUPPLY
1µF
D_BST4
C_IN
INPUT*
7V TO 24V
C_BST4
0.22µF
N_H4
L4
R_SENSE4
1.0mΩ
N_L4
R20
100Ω
C12
R21
1000pF ^100Ω
R22
100Ω
C13
R23
1000pF 100Ω
OUTPUT
C_OUT
CONNECT TO
MAX1544
(SEE FIGURE 12a)
POWER GROUND
ANALOG GROUND
(MASTER)
CONNECT TO
MAX1544
(SEE FIGURE 12a)
*LOWER INPUT VOLTAGES
REQUIRE ADDITIONAL
INPUT CAPACITANCE.
Figure 12c. Standard AMD Desktop 70A Application Circuit (4th Phase—MAX1980 Slave)
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