ISL8117A

FN8752 Rev 1.00

Page 13 of 23

Feb 26, 2024

FIGURE 24. START-UP WAVEFORMS; MODE = CCM, LOAD = 0A,

VIN = 48V

FIGURE 25. START-UP WAVEFORMS; MODE = DEM, LOAD = 0A,

VIN = 48V

FIGURE 26. TRACKING; VIN = 48V, LOAD = 0A, MODE = CCM

FIGURE 27. FREQUENCY SYNCHRONIZATION; VIN = 48V, LOAD = 0A,

DEFAULT fSW = 300kHz, SYNC fSW = 330kHz

FIGURE 28. LOAD TRANSIENT RESPONSE; VIN = 48V, 0A TO 20A

1A/µs STEP LOAD, CCM MODE

FIGURE 29. OCP RESPONSE, OUTPUT SHORT-CIRCUITED FROM NO

LOAD TO GROUND AND RELEASED, CCM MODE,

VIN = 48V

Typical Performance Curves Oscilloscopeplots aretakenusingtheISL8117AEVAL1Zevaluationboard,V

IN = 18V to

60V, VOUT = 12V, IOUT = 20A unless otherwise noted. (Continued)

20ms/DIV

VOUT 5V/DIV

SS 2V/DIV

EN 5V/DIV

PGOOD 5V/DIV

20ms/DIV

VOUT 5V/DIV

SS 2V/DIV

EN 5V/DIV

PGOOD 5V/DIV

4ms/DIV

SS 500mV/DIV

VOUT 10V/DIV

PGOOD 5V/DIV

2µs/DIV

SYNC 5V/DIV

LGATE 5V/DIV

IL 10V/DIV

400µs/DIV

VOUT 200mV/DIV

IOUT 10A/DIV

200ms/DIV

VOUT 10V/DIV

IL 20A/DIV

SS 5V/DIV

PGOOD 5V/DIV