Datasheet

MAX17595/MAX17596/MAX17597
Peak-Current-Mode Controllers for
Flyback and Boost Regulators
8Maxim Integrated
Typical Operating Characteristics (continued)
(V
IN
= 15V, V
EN/UVLO
= +2V, COMP = open, C
VIN
= 1FF, C
VDRV
= 1FF, T
A
= T
J
= -40NC to +125NC, unless otherwise noted.)
ENABLE STARTUP
MAX17595/6/7 toc15
COMP
1V/div
2ms/div
V
OUT
10V/div
EN/UVLO
5V/div
SWITCHING CURRENT
vs. SWITCHING FREQUENCY
SWITCHING FREQUENCY (Hz)
SWITCHING CURRENT (mA)
900800700500 600400300200
1.7
1.9
2.1
2.3
2.5
1.5
100 1000
MAX17595/6/7 toc18
BODE PLOT (FIGURE 9 OUTPUT)
MAX17595/6/7 toc20
PHASE
36°/div
GAIN
10dB/div
BANDWIDTH = 11.5kHz
PHASE MARGIN = 50.9°
6682
2
44181
LOAD TRANSIENT RESPONSE
(FIGURE 9 OUTPUT)
MAX17595/6/7 toc19
0.4ms/div
V
OUT
(AC)
0.5V/div
I
LOAD
0.5A/div
LOAD CURRENT (A)
0 1.41.21.00.80.60.40.2
EFFICIENCY GRAPH
(FIGURE 9 OUTPUT)
EFFICIENCY (%)
10
20
30
40
60
70
80
90
100
0
50
MAX17595/6/7 toc21
V
DC
= 120V
ENABLE SHUTDOWN
MAX17595/6/7 toc16
COMP
1V/div
400µs/div
V
OUT
10V/div
EN/UVLO
5V/div
HICCUP OPERATION
MAX17595/6/7 toc17
1ms/div
V
OUT
10V/div
V
DRAIN
100V/div
I
PRI
2A/div