XR79120 Datasheet, PDF (8/19 Pages) Exar Corporation – 22V, 20A Synchronous Step Down COT Power Module

XR79120
Typical Performance Characteristics
Unless otherwise noted: V_IN = 12V, V_OUT=1.8V, I_OUT=20A, f=500kHz, T_A = 25°C. Schematic from the application information
section.
1.820
1.815
1.810
1.805
1.800
1.795
1.790
1.785
1.780
0
4
8 12 16 20
I_OUT (A)
Figure 1: Load Regulation
1.820
1.815
1.810
1.805
1.800
1.795
1.790
1.785
1.780
4 6 8 10 12 14 16 18 20 22
V_IN (V)
Figure 2: Line regulation
500
Calculated
Typical
400
500
Calculated
Typical
400
300
300
200
200
100
0
5
10
15
20
R_ON (kΩ)
Figure 3: T_ON versus R_ON
600
500
400
300
200
100
0
0
4
8 12 16 20
I_OUT (A)
Figure 5: frequency versus I_OUT
100
4 6 8 10 12 14 16 18 20 22
V_IN (V)
Figure 4: T_ON versus V_IN, R_ON=6.98k
600
500
400
300
200
100
0
4 6 8 10 12 14 16 18 20 22
V_IN (V)
Figure 6: frequency versus V_IN
© 2014 Exar Corporation
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Rev 1A