MAX5037 MAXIM [Maxim Integrated Products], MAX5037 Datasheet - Page 21

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

Each MAX5037 circuit drives two 180° out-of-phase
channels. Parallel two or three MAX5037 circuits to
achieve four- or six-phase operation, respectively.
Figure 1 shows the typical application circuit for two-
phase operation. The design criteria for a two-phase
converter includes frequency selection, inductor value,
input/output capacitance, switching MOSFETs, sense
resistors, and the compensation network. Follow the
same procedure for the four- and six-phase converter
design, except for the input and output capacitance.
The input and output capacitance requirement varies
depending on the operating duty cycle.
Table 2. Component List
DESIGNATION
C32, C34, C36
C33, C35, C43
C40, C41, C42
C26–C30, C37
C12, C13
C14, C15
C16–C25
C3–C11
R3, R13
Q1, Q3
Q2, Q4
C1, C2
D1, D2
D3, D4
R1, R2
R5, R6
R8, R9
L1, L2
C31
C38
C39
R11
R12
R4
R7
Applications Information
______________________________________________________________________________________
QTY
10
2
9
2
2
6
1
3
3
1
1
3
2
2
2
2
2
4
1
1
2
1
2
1
1
47µF, 16V X5R input-filter capacitors TDK C5750X5R1C476M
22µF, 16V input-filter capacitors TDK C4532X5R1C226M
0.47µF, 16V capacitors TDK C1608X5R1A474K
100µF, 6.3V output-filter capacitors Murata GRM44-1X5R107K6.3
270µF, 2V output-filter capacitors Panasonic EEFUE0D271R
10µF, 6.3V output-filter capacitors TDK C2012X5R0J106M
4700pF, 16V X7R capacitor Vishay-Siliconix VJ0603Y471JXJ
470pF, 16V capacitors Murata GRM1885C1H471JAB01
0.01µF, 50V X7R capacitors Murata GRM188R71H103KA01
4.7µF, 16V X5R capacitor Murata GRM40-034X5R475k6.3
1.0µF, 10V Y5V capacitor Murata GRM188F51A105
0.1µF, 16V X7R capacitors Murata GRM188R71C104KA01
Schottky diodes ON-Semiconductor MBRS340T3
Schottky diodes ON-Semiconductor MBR0520LT1
0.6µH, 27A inductors Panasonic ETQP1H0R6BFX
Upper power MOSFETs Vishay-Siliconix Si7860DP
Lower power MOSFETs Vishay-Siliconix Si7886DP
Current-sense resistors, use two 2.70m resistors in parallel Panasonic ERJM1WSF2M7U
2.2 ±1% resistor
7.5k ±1% resistor
1k ±1% resistors
4.99k ±1% resistor
37.4k ±1% resistors
10k ±1% resistor
10 ±1% resistor
VRM 9.0, Dual-Phase, Parallelable,
Average Current-Mode Controller
The examples discussed in this data sheet pertain to a
typical VRM application with the following specifications:
V
V
I
V
AVP (∆V
f
Peak-to-Peak Inductor Current (∆I
Table 2 shows a list of recommended external compo-
nents (Figure 1) and Table 3 provides component sup-
plier information.
OUT(MAX)
SW
IN
OUT
COREMAX
= +12V
= 250kHz
= +1.1V to +1.85V
DESCRIPTION
OUT
= 52A
= VID Programmed Output Voltage at No Load
) = 120mV
L
) = 10A
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