Datasheet

MAX17598/MAX17599
Low I
Q
, Wide-Input Range, Active Clamp
Current-Mode PWM Controllers
10Maxim Integrated
Typical Operating Characteristics (continued)
LOAD TRANSIENT RESPONSE (FIGURE 9)
MAX17598/9 toc25
I
LOAD
2A/div
V
OUT
(AC)
100mV/div
200µs/div
EFFICIENCY CURVES
OUTPUT CURRENT (A)
EFFICIENCY (%)
8642
15
20
30
40
50
60
70
80
90
100
0
01
0
V
IN
= 36V
V
IN
= 48V
V
IN
= 72V
MAX17598/9 toc26
BODE PLOT (FIGURE 9)
MAX17598/98 toc27
GAIN
10dB/div
PHASE
36°/div
BANDWIDTH = 10.3kHz
PHASE MARGIN = 72°
6812 244668811
ACTIVE CLAMP SWITCHING
WAVEFORM (FIGURE 9)
MAX17598/9 toc28
I
PRIMARY
1A/div
V
DS
50V/div
1µs/div
SS, NDRV AND AUXDRV IN
HICCUP MODE (FIGURE 9)
MAX17598/9 toc23
V
NDRV
5V/div
V
AUXDRV
5V/div
V
SS
500mV/div
4ms/div
MOMENTARY OVI
OPERATION (FIGURE 9)
MAX17598/9 toc24
V
SS
1V/div
V
OUT
5V/div
V
CLAMPCAP
50V/div
V
OVI
5V/div
4ms/div