ISL8271M Datasheet, PDF (11/51 Pages) Intersil Corporation – Digital DC/DC PMBus 33A Module

ISL8271M
Typical Performance Curves (Continued)
Transient Response Performance C_OUT = 4x100µF Ceramic and 2x470µF POSCAP, I_OUT = 0/16A, T_A = +25°C, Typical values are
used unless otherwise noted.
V_OUT (50mV/DIV)
I_OUT (10A/DIV)
f_SW = 550kHz
ASCR GAIN = 600
RESIDUAL = 60
V_OUT (50mV/DIV)
I_OUT (10A/DIV)
f_SW = 550kHz
ASCR GAIN = 256
RESIDUAL = 90
20µs/DIV
FIGURE 9. LOAD TRANSIENT RESPONSE AT V_IN = 12V, V_OUT = 1V
WITH HIGH BANDWIDTH ASCR PARAMETER
50µs/DIV
FIGURE 10. LOAD TRANSIENT RESPONSE AT V_IN = 12V, V_OUT = 1V
WITH DEFAULT ASCR PARAMETERS
V_OUT (50mV/DIV)
I_OUT (10A/DIV)
f_SW = 700kHz
ASCR GAIN = 500
RESIDUAL = 70
V_OUT (50mV/DIV)
I_OUT (10A/DIV)
f _SW = 700kHz
ASCR GAIN = 256
RESIDUAL = 90
20µs /DIV
FIGURE 11. LOAD TRANSIENT RESPONSE AT V_IN = 12V, V_OUT = 2.5V
WITH HIGH BANDWIDTH ASCR PARAMETERS
50µs/DIV
FIGURE 12. LOAD TRANSIENT RESPONSE AT V_IN = 12V, V_OUT = 2.5V
WITH DEFAULT ASCR PARAMETERS
V_OUT(50mV/DIV)
I_OUT(10A/DIV)
f_SW = 700kHz
ASCR GAIN = 400
RESIDUAL = 75
V_OUT(50mV/DIV)
I_OUT(10A/DIV)
f_SW = 700kHz
ASCR GAIN = 256
RESIDUAL = 90
20µs /DIV
FIGURE 13. LOAD TRANSIENT RESPONSE AT V_IN = 12V, V_OUT = 3.3V
WITH HIGH BANDWIDTH ASCR PARAMETERS
50µs /DIV
FIGURE 14. LOAD TRANSIENT RESPONSE AT V_IN = 12V, V_OUT = 3.3V
WITH DEFAULT ASCR PARAMETERS
Submit Document Feedback ₁₁
FN8636.1
December 18, 2014