MAX8686 Maxim Integrated Products, MAX8686 Datasheet - Page 7

• Manufacturer Part Number: MAX8686
• Description: DC-DC Converter Delivers Up To 25A Per Phase
• Manufacturer: Maxim Integrated Products

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(V
IN
DC-DC Converter Delivers Up to 25A Per Phase
= 12V, f
5V/div
5V/div
5V/div
5V/div
LX4
LX5
LX6
LX1
25
23
21
19
17
15
13
11
9
SW
25
PHASE SHEDDING FROM 6 PHASES
30
= 500kHz, single phase, circuit of Figure 2, unless otherwise noted.)
LX_ SWITCHING WAVEFORM FOR
0 LFM
35 40 45 50 55 60
TO 2 PHASES (I
SAFE OPERATING AREA
AMBIENT TEMPERATURE (°C)
_______________________________________________________________________________________
PHASES 4, 5, 6, AND 1
200ns/div
1µs/div
100 LFM
T
J
= +125°C, V
CIRCUIT OF FIGURE 4
CIRCUIT OF FIGURE 4
OUT
200 LFM
65 70
= 30A)
OUT
300 LFM
400 LFM
MAX8686 toc18
MAX8686 toc16
75
= 1.2V
80
85
PS
2V/div
LX1
10V/div
LX2
10V/div
LX5
10V/div
Single/Multiphase, Step-Down,
Typical Operating Characteristics (continued)
3.33
3.32
3.31
3.30
3.29
3.28
3.27
25
23
21
19
17
15
13
11
9
-40
25
-30
PHASE RECOVERY FROM 2 PHASES
30
REFO OUTPUT vs. TEMPERATURE
-20
0 LFM
35 40 45 50 55 60
TO 6 PHASES (I
SAFE OPERATING AREA
AMBIENT TEMPERATURE (°C)
-10
0
TEMPERATURE (°C)
10
100 LFM
1µs/div
20
T
J
= +125°C, V
30
CIRCUIT OF FIGURE 4
OUT
200 LFM
40
65 70
= 30A)
50
300 LFM
OUT
60
400 LFM
MAX8686 toc19
75
70
= 3.3V
80
80
85
90
LX5
10V/div
PS
2V/div
LX2
10V/div
LX1
10V/div
7