Rainbow Electronics MAX15020 - Manual (Page 6)

MAX15020
2A, 40V Step-Down DC-DC Converter with
Dynamic Output-Voltage Programming
6 _______________________________________________________________________________________
LIGHT-LOAD SWITCHING WAVEFORMS
MAX15020 toc18
1 µs/div
20V/div
0V
1A/div
0A
I LX
V
LX
I LOAD = 40mA
SWITCHING WAVEFORMS
MAX15020 toc19
1 µs/div
20V/div
0V
1A/div
0A
I LX
V LX
I
LOAD
= 500mA
LOAD TRANSIENT
MAX15020 toc16
200 µs/div
50mV/div
AC-COUPLED
2A
1A I OUT
V
OUT
V IN = 40V, V OUT = 30V
LOAD TRANSIENT
MAX15020 toc17
200 µs/div
50mV/div
AC-COUPLED
1.1A
0.25A I OUT
V OUT
V IN = 40V, V OUT = 30V
Typical Operating Characteristics (continued)
(V IN = 36V, Circuit of Figure 2, T A = +25°C, unless otherwise noted.)
HEAVY-LOAD
SWITCHING WAVEFORMS
MAX15020 toc20
1 µs/div
20V/div
0V
1A/div
0A
I LX
V LX
I LOAD = 2A
FEEDBACK VOLTAGE
vs. REFIN INPUT VOLTAGE
MAX15020 toc21
REFIN INPUT VOLTAGE (V)
FEEDBACK VOLTAGE (V)
3 2 1
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
0
0 4