SLIN-12F2AX Datasheet, PDF (18/25 Pages) Bel Fuse Inc. – 2.4 Vdc - 5.5 Vdc Input, 0.6 Vdc - 3.63 Vdc /12 A Output

NON-ISOLATED DC/DC CONVERTERS
2.4 Vdc - 5.5 Vdc Input, 0.6 Vdc - 3.63 Vdc /12 A Output
December 2, 2010
Bel Power Inc., a subsidiary of Bel Fuse Inc.
Tunable Loop^TM (continued)
Table 3.Recommended values of R_TUNE and C_TUNE to obtain transient deviation of 2% of Vout for a 6A step load
with Vin=5V.
Vo
Co
R_TUNE
C_TUNE
ΔV
3.3V
2.5V
1.8V
1.2V
330μF Polymer
Cap
1x47μF
4x47μF
+ 330μF Polymer + 330μF Polymer
Cap
Cap
4x47μF
+ 2x330μF
Polymer Cap
56
33
33
33
15nF
18nF
27nF
47nF
66mV
49mV
35mV
24mV
0.6V
6x330μF
Polymer Cap
33
220nF
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
47
3300pF
2x47μF
47
6800pF
4x47μF
33
15nF
10x47μF
33
47nF
20x47μF
22
68nF
Table 5. Recommended values of R_TUNE and C_TUNE to obtain transient deviation of 2% of Vout for a 6A step load
with Vin=3.3V.
Vo
Co
R_TUNE
C_TUNE
ΔV
2.5V
2 x 330μF
Polymer Cap
33
82nF
45mV
1.8V
2 x 330μF
Polymer Cap
33
100nF
32mV
1.2V
3 x 330μF
Polymer Cap
33
180nF
24mV
0.6V
7 x 330μF
Polymer Cap
33
390nF
12mV
Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 • Tel [phone] • Fax [phone] • www.belfuse.com
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