XR76115 Datasheet, PDF (8/16 Pages) Exar Corporation – 15A Synchronous Step Down COT Regulator

XR76115
Typical Performance Characteristics
All data taken at VIN=12V, VOUT=1.2V, f=600kHz, TA=25°C, No Air flow, Forced CCM, unless otherwise specified.
Schematic and BOM from Applications Circuit section of this datasheet.
500
490
480
470
460
450
440
430
420
410
400
-40 -20 0 20 40 60 80 100 120
Tj (°C)
Figure 11: On-Time vs. temperature
70
60
50
40
30
-40 -20 0 20 40 60 80 100 120
Tj (°C)
Figure 12: ILIM vs. temperature
SW
VOUT
AC coupled
20MHz Filter
50mV
-84mV
IL
20us/d
∆IOUT/∆t
=2.5A/us
Figure 13: load step, DCM/CCM, 0A-7.5A-0A
SW
VOUT
AC coupled
20MHz Filter
-50mV
60mV
IL
∆IOUT/∆t
=2.5A/us
20us/d
Figure 15: load step, Forced CCM, 7.5A-15A-7.5A
SW
VOUT
AC coupled
20MHz Filter
-60mV
60mV
∆IOUT/∆t
IL
=2.5A/us
20us/d
Figure 14: load step, Forced CCM, 0A-7.5-0A
26
24
22
20
18
16
14
12
10
1.5
1.75
2
2.25
2.5
R_LIM (k)
Figure 16: Typical IOCP versus RLIM
© 2015 Exar Corporation
8/16
www.exar.com
Rev. 1B