AN2808 Datasheet, PDF (37/40 Pages) STMicroelectronics – The PM6670S device is a complete

AN2808
PM6670S evaluation tests
Figure 46. SW efficiency vs load – VDDQ = 2.5 V, Vin = 12 V
5.00E+05
4.50E+05
4.00E+05
3.50E+05
3.00E+05
2.50E+05
2.00E+05
1.50E+05
1.00E+05
5.00E+04
0.00E+00
0.010
0.100
Current [A]
1.000
Forced PWM
Pulse Skip
NO AUD. PS
10.000
AM00668v1
Figure 47. SW efficiency vs load – VDDQ = 2.5 V, Vin = 5 V
5.00E+05
4.50E+05
4.00E+05
3.50E+05
3.00E+05
2.50E+05
2.00E+05
1.50E+05
Forced PWM
Pulse Skip
NO AUD. PS
1.00E+05
5.00E+04
0.00E+00
0.010
0.100
1.000
10.000
Current [A]
AM00669v1
The dynamic behavior of the PM6670S can be seen in the following figures, which show the
VDDQ and VTT load transient response with 5 V input voltage.
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