SLIN-12E1AX Datasheet, PDF (20/26 Pages) Bel Fuse Inc. – NON-ISOLATED DC/DC CONVERTERS 4.5 Vdc - 14 Vdc Input, 0.69 Vdc - 5.5 Vdc /12 A Outputs

NON-ISOLATED DC/DC CONVERTERS
4.5 Vdc - 14 Vdc Input, 0.69 Vdc - 5.5 Vdc /12 A Outputs
November 5, 2009
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=12V and various external ceramic capacitor
combinations.
Co
R_TUNE
C_TUNE
1x47μF
470
1000pF
2x47μF
270
3300pF
4x47μF 10x47μF 20x47μF
150
150
150
4700pF 8200pF 12nF
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=12V.
Vo
Co
R_TUNE
C_TUNE
ΔV
5V
4x47μF
270
3300pF
91mV
3.3V
2.5V
1x47μF + 330μF 2x47μF + 330μF
Polymer
Polymer
220
220
4700pF
6800pF
60mV
47mV
1.8V
1.2V
0.69V
6x47μF + 330μF 6x47μF + 2x330μF 4x47μF + 6x330μF
Polymer
Polymer
Polymer
220
150
150
18nF
33nF
100nF
35mV
23mV
12mV
Thermal Considerations
Power modules operate in a variety of thermal environments; however, sufficient cooling should always be
provided to help ensure reliable operation.
Considerations include ambient temperature, airflow, module power dissipation, and the need for increased
reliability. A reduction in the operating temperature of the module will result in an increase in reliability. The
thermal data presented here is based on physical measurements taken in a wind tunnel. The test set-up is
shown below.
Wind Tunnel
25.4_
(1.0)
PWBs
Power Module
76.2_
(3.0)
x
12.7_
(0.50)
Air
flow
Probe Location
for measuring
airflow and
ambient
temperature
Thermal Test Setup
Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 • Tel [phone] • Fax [phone] • www.belfuse.com
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