MAX1544 Datasheet, PDF (39/42 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
POWER
GOOD
R10
10Ω
R11
100kΩ
C2
1µF
DAC INPUTS
V_DD
V_CC
U1
MAX1544 V+
VROK
BSTM
D0
D1
D2
DHM
D3
D4
LXM
SUSPEND INPUTS
(FOUR-LEVEL LOGIC)
ON
OFF
R_TIME
64.9kΩ
C_CCV
47pF
S0
S1
SHDN
TIME
CCV
DLM
PGND
GND
CMN
CMP
OAIN+
OAIN-
C_REF
0.22µF
REF (300kHz)
TON
REF
R9
R8
22.6kΩ ^100kΩ
±1% ^±1%
ILIM
REF
C_REF
0.22µF
R6
20kΩ
±1%
OFS
R7
182kΩ
±1%
V_CC (OVP ENABLED)
OVP
PWM
SKIP
SKIP
GND
POWER GROUND
ANALOG GROUND
FB
CCI
CSP
CSN
BSTS
DHS
LXS
DLS
GNDS
5V BIAS
C1 ^SUPPLY
2.2µF
BST
DIODES
C_BST1
0.22µF
N_H1
INPUT*
C_IN
7V TO 24V
R_SENSE1
L1
1.0mΩ
C_OUT
N_L1
R3
R2
1kΩ
1kΩ
±1%
±1%
R6
1.65kΩ
±1%
R1
1.65kΩ
±1%
C_CCI
470pF
C_BST2
0.22µF
N_H2
R4
1kΩ
±1%
R5
1kΩ
±1%
C_IN
R_SENSE2
L2
1.0mΩ
N_L2
OUTPUT
C_OUT
*LOWER INPUT VOLTAGES
REQUIRE ADDITIONAL
INPUT CAPACITANCE.
Figure 12a. Standard AMD Desktop 70A Application Circuit (1st and 2nd Phases—MAX1544 Master)
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