R34DS0022EU0102 Rev.1.02

Page 21

Feb 15, 2023

ISL73847SEH Datasheet

Figure 30. Start-Up with EN

(VDD = PVIN = 12V, ILOAD = 0A

Figure 31. Start-Up with EN

(VDD = PVIN = 12V, ILOAD = 50A

Figure 32. Start-Up with EN

(VDD = PVIN = 13.2V, ILOAD = 0A

Figure 33. Start-Up with EN

(VDD = PVIN = 13.2V, ILOAD = 50A

Figure 34. Shutdown with EN

(VDD = PVIN = 12V, ILOAD = 0A

Figure 35. Shutdown with EN

(VDD = PVIN = 12V, ILOAD = 50A

Unless otherwise noted, VOUT = 1V; LOUT = 220nH per phase, COUT = 2.64mF per phase, CDROOP = 56nF, CVREF = 100nF,

RDROOP =0Ω, RFS = 94.2kΩ, CSS = 22nF, CCOMP = 8.2nF, RCOMP = 4.22kΩ, CPOLE = 330pF, CVCC= 1µF, RSLP = 34.8kΩ,

CSLP = 100pF, TA = +25°C (Cont.)

VOUT 200mV/Div

500µs/Div

EN 5V/Div

PWM2 10V/Div

FLT 5V/Div

IL1 10A/Div

IL2 10A/Div

PWM1 10V/Div

SS 200mV/Div

VOUT 200mV/Div

500µs/Div

EN 5V/Div

PWM2 10V/Div

FLT 5V/Div

IL1 10A/Div

IL2 10A/Div

PWM1 10V/Div

SS 200mV/Div

VOUT 200mV/Div

500µs/Div

EN 5V/Div

PWM2 10V/Div

FLT 5V/Div

IL1 10A/Div

IL2 10A/Div

PWM1 10V/Div

SS 200mV/Div

VOUT 200mV/Div

500µs/Div

EN 5V/Div

PWM2 10V/Div

FLT 5V/Div

IL1 10A/Div

IL2 10A/Div

PWM1 10V/Div

SS 200mV/Div

VOUT 200mV/Div

5µs/Div

EN 5V/Div

PWM2 10V/Div

FLT 5V/Div

IL1 10A/Div

IL2 10A/Div

PWM1 10V/Div

SS 2V/Div

VOUT 100mV/Div

5µs/Div

EN 5V/Div

PWM2 10V/Div

FLT 5V/Div

IL1 10A/Div

IL2 10A/Div

PWM1 10V/Div

SS 2V/Div