SLIN-12F2AX Datasheet, PDF (16/25 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.
Remote Sense
The SLIN-12F2Ax power modules have a Remote Sense feature to minimize the effects of distribution losses by
regulating the voltage at the SENSE pin. The voltage between the SENSE pin and VOUT pin must not exceed
0.5V. Note that the output voltage of the module cannot exceed the specified maximum value. This includes the
voltage drop between the SENSE and Vout pins. When the Remote Sense feature is not being used, connect
the SENSE pin to the VOUT pin.
Voltage Margining
Output voltage margining can be implemented in the SLIN-12F2Ax modules by connecting a resistor, R_margin-up,
from the Trim pin to the ground pin for margining-up the output voltage and by connecting a resistor, R_margin-down,
from the Trim pin to output pin for margining-down. The figure below shows the circuit configuration for output
voltage margining.
Vo
Rmargin-down
MODULE
Q2
Trim
Rmargin-up
Rtrim
Q1
GND
Circuit Configuration for margining Output voltage
Monotonic Start-up and Shutdown
The SLIN-12F2Ax modules have monotonic start-up and shutdown behavior for any combination of rated input
voltage, output current and operating temperature range.
Startup into Pre-biased Output
The SLIN-12F2Ax modules can start into a prebiased output as long as the prebias voltage is 0.5V less than the
set output voltage.
Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 • Tel [phone] • Fax [phone] • www.belfuse.com
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