User Guide 003
13
UG003.0
September 17, 2014
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FIGURE 23. OUTPUT SHORT CIRCUIT PROTECTION WITH
CONTINUOUS RETRY ENABLED (HICCUP MODE),
V
IN
= 12V, V
OUT
= 1.2V
FIGURE 24. OUTPUT SHORT CIRCUIT RECOVERY FROM CONTINUOUS
RETRY (HICCUP MODE). V
IN
= 12V, V
OUT
= 1.2V
FIGURE 25. SOFT-START WITH OUTPUT SEQUENCING AT V
IN
= 12V,
THREE ISL8272MEVAL1Z BOARDS ARE CONNECTED IN
DAISY CHAIN
FIGURE 26. SOFT-STOP WITH OUTPUT SEQUENCING AT V
IN
= 12V,
THREE ISL8272MEVAL1Z BOARDS ARE CONNECTED IN
DAISY CHAIN
FIGURE 27. DYNAMIC VOLTAGE SCALING WITH V
OUT
CHANGE FROM 1.1V TO 1.3V, V
IN
= 12V,
VOUT_TRANSITION_RATE = 1mV/µs
FIGURE 28. PHASE SPREADING/INTERLEAVING, TWO
ISL8272MEVAL1Z BOARDS ARE CONNECTED IN DAISY
CHAIN, MODULE #1 RAIL POSITION: 0; MODULE #2
RAIL POSITION:4. V
IN
= 12V, VOUT_1 = 1.2V,
VOUT_2 = 3.3V, f
SW
= 421kHz
Typical Performance Data
The following data was acquired using a ISL8272MEVAL1Z evaluation board. (Continued)
PHASE1 (10V/DIV)
PHASE2 (10V/DIV)
V
OUT
(1V/DIV)
I
IN
(5A/DIV)
50ms/DIV
PHASE1 (10V/DIV)
PHASE2 (10V/DIV)
V
OUT
(1V/DIV)
I
IN
(5A/DIV)
50ms/DIV
5ms/DIV
ENABLE
VOUT_2 (1V/DIV)
VOUT_1 (1V/DIV)
VOUT_3 (1V/DIV)
MODULE #1: V
OUT
= 1V
MODULE #2: V
OUT
= 1.5V
MODULE #3: V
OUT
= 2.5V
5ms/DIV
ENABLE
VOUT_2 (1V/DIV)
VOUT_1 (1V/DIV)
VOUT_3 (1V/DIV)
MODULE #1: V
OUT
= 1V
MODULE #2: V
OUT
= 1.5V
MODULE #3: V
OUT
= 2.5V
V
OUT
(200mV/DIV)
5ms/DIV
1µs/DIV
PHASE2 OF MODULE #2
PHASE2 OF MODULE #1
PHASE1 OF MODULE #1
PHASE1 OF MODULE #2
10V/DIV
10V/DIV
10V/DIV
10V/DIV
