MP1584 – 3A, 1.5MHz, 28V STEP-DOWN CONVERTER
TYPICAL PERFORMANCE CHARACTERISTICS (continued)
VIN = 12V, C1 = 10µF, C2 = 22µF, L1 = 10µH, fSW=500kHz, and TA = +25C, unless otherwise noted.
Startup Shutdown Startup
I
= 0.1A
I
= 0.1A
I
= 1A
OUT
OUT
OUT
V
EN
V
V
EN
EN
5V/div.
5V/div.
5V/div.
V
V
OUT
OUT
V
OUT
2V/div.
2V/div.
2V/div.
V
10V/div.
V
SW
V
SW
SW
10V/div.
10V/div.
I
I
I
L
L
L
1A/div.
1A/div.
1A/div.
5ms/div.
1ms/div.
5ms/div.
Shutdown
Startup
Shutdown
I
= 1A
I
= 2A
OUT
I
= 2A
OUT
OUT
V
V
V
EN
EN
EN
5V/div.
5V/div.
5V/div.
V
V
V
OUT
OUT
OUT
2V/div.
2V/div.
2V/div.
V
V
V
SW
SW
SW
10V/div.
10V/div.
10V/div.
I
I
I
L
L
L
2A/div.
1A/div.
2A/div.
5ms/div.
Short Circuit Entry
Short Circuit Recovery
I
= 0.1A to Short
I
= Short to 0.1A
OUT
OUT
V
V
OUT
OUT
2V/div.
2V/div.
I
I
L
L
1A/div.
1A/div.
MP1584 Rev. 1.0
8/8/2011
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