SLIN-03F2A Datasheet, PDF (19/26 Pages) Bel Fuse Inc. – NON-ISOLATED DC/DC CONVERTERS

NON-ISOLATED DC/DC CONVERTERS
2.4 Vdc - 5.5 Vdc Input, 0.6 Vdc - 3.63 Vdc /3 A Output
December 10, 2010
Bel Power Inc., a subsidiary of Bel Fuse Inc.
Tunable Loop^TM (continued)
Table 2.General recommended values of R_TUNE and C_TUNE for Vin=5V and various external ceramic capacitor
combinations.
Co
R_TUNE
C_TUNE
1x47μF
33
6800pF
2x47μF
33
15nF
4x47μF
33
33nF
6x47μF
33
47nF
10x47μF
33
56nF
Table 3.Recommended values of R_TUNE and C_TUNE to obtain transient deviation of ≤2% of Vout for a 1.5A step
load with Vin=5V.
Vo
Co
R_TUNE
C_TUNE
ΔV
3.3V
1 x 47μF
33
6800pF
59mV
2.5V
2 x 47μF
33
15nF
35mV
1.8V
2 x 47μF
33
15nF
35mV
1.2V
4 x 47μF
33
33nF
21mV
0.6V
2 x 47μF
+330μF Polymer
33
82nF
12mV
Table 4. General recommended values of R_TUNE and C_TUNE for Vin=3.3V and various external ceramic capacitor
combinations.
Cext
R_TUNE
C_TUNE
1x47μF
33
15nF
2x47μF
33
27nF
4x47μF
33
47nF
6x47μF
33
56nF
10x47μF
33
68nF
Table 5. Recommended values of R_TUNE and C_TUNE to obtain transient deviation of ≤2% of Vout for a 1.5A step
load with Vin=3.3V.
Vo
Co
R_TUNE
C_TUNE
ΔV
2.5V
2 x 47μF
33
22nF
46mV
1.8V
2 x 47μF
33
27nF
32mV
1.2V
4 x 47μF
33
47nF
24mV
0.6V
4 x 47μF
+330μF Polymer
33
150nF
12mV
Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 • Tel [phone] • Fax [phone] • www.belfuse.com
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