Owner's manual

MAX17409
1-Phase Quick-PWM GPU Controller
8 _______________________________________________________________________________________
0.9V OUTPUT EFFICIENCY
vs. LOAD CURRENT
MAX17409 toc01
LOAD CURRENT (A)
EFFICIENCY (%)
1010.1
50
60
70
80
90
100
40
0.01 100
20V
SKIP MODE
PWM MODE
7V
12V
0.9V OUTPUT VOLTAGE
vs. LOAD CURRENT
MAX17409 toc02
LOAD CURRENT (A)
OUTPUT VOLTAGE (V)
12 14108642
0.89
0.90
0.91
0.92
0.88
016
SKIP MODE
PWM MODE
SWITCHING FREQUENCY
vs. LOAD CURRENT
MAX17409 toc03
LOAD CURRENT (A)
SWITCHING FREQUENCY (kHz)
1010.1
100
50
150
200
250
300
350
0
0.01 100
V
IN
= 12V
SKIP MODE
PWM MODE
NO-LOAD SUPPLY CURRENT
vs. INPUT VOLTAGE
MAX17409 toc04
INPUT VOLTAGE (V)
SWITCHING FREQUENCY (kHz)
12 1311109876
0.1
1
10
100
0.01
514
I
IN
I
IN
I
CC
+ I
DD
I
CC
+ I
DD
SKIP MODE
PWM MODE
0.8125V OUTPUT
VOLTAGE DISTRIBUTION
MAX17409 toc05
OUTPUT VOLTAGE (V)
SAMPLE PERCENTAGE (%)
80
70
60
50
40
30
20
10
90
0
SAMPLE SIZE = 100
+85°C
+25°C
0.8085 0.8095 0.8105 0.8115 0.8125 0.8135 0.8145 0.8155 0.8165 0.8175 0.8075
Gm
(FB)
TRANSCONDUCTANCE
DISTRIBUTION
MAX17409 toc06
TRANSCONDUCTANCE (µS)
SAMPLE PERCENTAGE (%)
45
40
35
30
25
20
15
5
10
50
0
SAMPLE SIZE = 100
+85°C
+25°C
592 594 596 598 600 602 604 606 608 610 590
Typical Operating Characteristics
(Circuit of Figure 1, V
IN
= 12V, V
CC
= V
DD
= 5V, SHDN = V
CC
, G0–G5 set for 1.05V (G0–G5 = 100110), T
A
= +25°C, unless other-
wise specified.)