FAN2315MPX Datasheet, PDF (8/19 Pages) Fairchild Semiconductor – FAN2315 TinyBuck 15 A Integrated Synchronous Buck Regulator

Typical Performance Characteristics
Tested using evaluation board circuit shown in Figure 1 with V_IN=12 V, V_OUT=1.2 V, f_SW=500 kHz, T_A=25°C, and no
airflow; unless otherwise specified.
1.22
1.215
1.21
1.205
1.2
0A_VOUT[V]
15A_VOUT[V]
1.195
1.19
5
10
15
Input Voltage (V)
Figure 11. Line Regulation
Figure 12. Startup Waveforms with 0 A Load Current
Figure 13. Startup Waveforms with 15 A
Load Current
EN (5V/div)
Vin=12V
Iout=0A
Vout Prebias
Soft Start (0.5V/div)
Vout (1V/div)
PGOOD (5V/div)
Time (500µs/div)
Figure 14. Shutdown Waveforms with 15 A
Load Current
Vin=12V
Iout=0A
Vout (20mV/div)
VSW (10V/div)
Time (20µs/div)
Figure 15. Startup Waveforms with Prebias Voltage
on Output
Figure 16. Static Load Ripple at Light-Load
© 2011 Fairchild Semiconductor Corporation
FAN2315 • Rev. 1.0.4
8
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