NCV97310MW50GEVB
http://onsemi.com
8
The modulation depth and modulation frequency are each
set by 2 external resistors to GND. The modulation
frequency can be set from 5 kHz up to 50 kHz using a resistor
from the RMOD pin to GND. The modulation depth can be
set from 3% up to 30% of the nominal switching frequency
using a resistor from the RDEPTH pin to GND. Please see
the curves below for typical values:
Spread spectrum is automatically turned off when there is
a short to GND or an open circuit on either the RMOD pin
or the RDEPTH pin. Please be sure that the ROSC pin is an
open circuit when using spread spectrum.
TYPICAL PERFORMANCE
Efficiency
Figure 6. Efficiency for SW1 with a 5.0 V Output
0
0.1
0.2
0
0.5
1
1.5
2
2.5
3
3.5
NCV97310 − SW1 Efficiency − 5.0 V
VIN = 8.0 V
VIN = 13.2 V
VIN = 18.0 V
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1
