MAX17498A(2012) Ver la hoja de datos (PDF) - Maxim Integrated
Número de pieza
componentes Descripción
Fabricante
MAX17498A
(Rev.:2012)
(Rev.:2012)
Maxim Integrated
MAX17498A Datasheet PDF : 30 Pages
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MAX17498A / MAX17498B / MAX17498C
AC-DC and DC-DC Peak Current-Mode Converters
for Flyback/Boost Applications
Typical Operating Characteristics (continued)
(VIN = +15V, VEN/UVLO = +2V, COMP = open, CIN = 1µF, CVCC = 1µF, TA = TJ = -40°C to +125°C, unless otherwise noted.)
PEAK CURRENT LIMIT (ILIM)
vs. RLIM AT ROOM TEMPERATURE
1800
1600
1400
1200
1000
800
600
400
200
0
0 10 20 30 40 50 60 70 80
RLIM AT ROOM TEMPERATURE (kI)
TRANSIENT RESPONSE FOR 50%
LOAD STEP ON FLYBACK OUTPUT (5V)
MAX17498 toc15
PEAK CURRENT LIMIT AT RLIM = 100kI
vs. TEMPERATURE
2.00
1.99
1.98
1.97
1.96
1.95
1.94
-40 -20 0 20 40 60 80 100 120
TEMPERATURE AT GIVEN RLIM (°C)
SHORT-CIRCUIT PROTECTION
MAX17498 toc16
2ms/div
ILOAD
500mA/div
VOUT
200mV/div
10ms/div
VLX
50V/div
VOUT
500mV/div
IPRI
2A/div
BODE PLOT - (5V OUTPUT AT 24V INPUT)
MAX17498 toc17
BW = 8.3kHz
PM = 63°
LOG (F)
PHASE
36°/div
GAIN
10dB/div
EFFICIENCY GRAPH AT 24V INPUT
(FLYBACK REGULATOR)
100
90
80
VIN = 24V
70
60
50
40
30
20
10
0
0 0.2 0.4 0.6 0.8 1.0 1.2 1.4
LOAD CURRENT (A)
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