MAX5037 MAXIM [Maxim Integrated Products], MAX5037 Datasheet - Page 13

• Manufacturer Part Number: MAX5037
• Description: VRM 9.0, Dual-Phase, Parallelable, Average Current-Mode Controller
• Manufacturer: MAXIM [Maxim Integrated Products]

Dual-phase converters with an out-of-phase locking
arrangement reduce the input and output capacitor rip-
ple current, effectively multiplying the switching fre-
quency by the number of phases. Each phase of the
MAX5037 consists of an inner average current loop
Figure 2. Typical VRM Application Circuit, V
V
IN
NOTE: TABLE 2 FOR COMPONENT VALUES.
C43
INPUTS
DAC
R10
R7
R8
R9
R12
14
15
18
C36
44
12
13
1
2
3
4
8
6
V
EAOUT
REG
CNTR
VID4
VID3
VID2
VID1
VID0
OVPOUT
OVPIN
DIFF
EAN
CC
C32
______________________________________________________________________________________
EN
C35
CLP1
19
R6
7
C31
R4
PLLCMP
42
CLP2
R5
C33
43
V
CLKIN
CC
38
C34
PGND
V
VRM 9.0, Dual-Phase, Parallelable,
IN
29
= +8V TO +28V
MAX5037
IN
SGND
28
Average Current-Mode Controller
R13
2.2Ω
5, 20, 35
IN
C1, C2
2 x 47µF
C42
0.1µF
PHASE
= +8V to +28V
SENSE-
41
11
SENSE+
PGOOD
10
9
CSN1
CSN2
17
40
CSP1
CSP2
16
39
V
CC
BST1
BST2
DH1
DH2
LX1
DL1
V
V
LX2
DL2
CC
DD
23
24
25
22
27
28
32
31
30
34
C39
1µF
controlled by a common outer-loop voltage-error ampli-
fier that corrects the output voltage errors. The
MAX5037 utilizes a single controlling voltage-error
amplifier and average current mode to force the phase
currents to be equal.
V
IN
R3
Q3
Q4
Q1
Q2
V
IN
0.47µF
D2
C8–C11
4 x 22µF
C40
0.1µF
C13
D1
PGOOD
C41
0.1µF
C3–C7
5 x 22µF
C12
0.47µF
0.6µH
0.6µH
L1
L2
R11
C38
4.7µF
D3
D4
1.35mΩ
1.35mΩ
R1
R2
C14, C15
2 x 100µF
C16–C25
2 x 270µF
C26–C30,
C37
6 x 10µF
LOAD
V
TO +1.85V
AT 52A
OUT
= +1.1V
13