Wide-Input, High-Frequency, Triple-Output Supplies
with Voltage Monitor and Power-On Reset
Typical Operating Characteristics (continued)
(Circuit of MAX8513 evaluation kit, V IN = 12V, T A = +25 ° C, f S = 1.4MHz, unless otherwise noted.)
OUTPUT1 LOAD-TRANSIENT RESPONSE
MAX8513/14 toc10
I OUT2 = 0.75A, I OUT3 = 25mA
OUTPUT3 LOAD-TRANSIENT RESPONSE
MAX8513/14 toc11
I OUT1 = 1A, I OUT2 = 0.75A
50mV/div
50mV/div
100mV/div
0A
40 μ s/div
V OUT1
AC-COUPLED
V OUT2
AC-COUPLED
V OUT3
AC-COUPLED
I OUT1
1A/div
50mV/div
50mV/div
50mV/div
5mA
40 μ s/div
V OUT1
AC-COUPLED
V OUT2
AC-COUPLED
V OUT3
AC-COUPLED
I OUT3
50mA/div
SWITCHING WAVEFORMS
(ALL OUTPUTS AT FULL LOAD)
MAX8513/14 toc12
V DH
SYNCHRONIZATION
MAX8513/14 toc13
10V/div
V DH
0V
V DL
0V
5V/div
0V
0V
0V
0V
200ns/div
PFO RESPONSE
MAX8513/14 toc14
5V/div
V LX
10V/div
V D2
(ANODE)
20V/div
PFO
2V/div
0V
0V
0V
1 μ s/div
POR RESPONSE
MAX8513/14 toc15
V DL
10V/div
SYNC/EN
5V/div
POR
5V/div
V OUT1
V IN
5V/div
0V
2V/div
0V
V OUT1
0V
V OUT2
5V/div
0V
I OUT1 = 2A, I OUT2 = 1.5A, I OUT3 = 50mA
2V/div
0V
V OUT3
10V/div
2ms/div
100ms/div
10
______________________________________________________________________________________
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