Typical operating characteristics – Rainbow Electronics MAX17409 User Manual
Page 8
MAX17409
1-Phase Quick-PWM GPU Controller
8
_______________________________________________________________________________________
0.9V OUTPUT EFFICIENCY
vs. LOAD CURRENT
MAX17409 toc01
LOAD CURRENT (A)
EFFICIENCY (%)
10
1
0.1
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
14
10
8
6
4
2
0.89
0.90
0.91
0.92
0.88
0
16
SKIP MODE
PWM MODE
SWITCHING FREQUENCY
vs. LOAD CURRENT
MAX17409 toc03
LOAD CURRENT (A)
SWITCHING FREQUENCY (kHz)
10
1
0.1
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
13
11
10
9
8
7
6
0.1
1
10
100
0.01
5
14
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.)