SLIN-30E1AL BEL [Bel Fuse Inc.], SLIN-30E1AL Datasheet - Page 12

• Manufacturer Part Number: SLIN-30E1AL
• Description: NON-ISOLATED DC/DC CONVERTERS 6.0 Vdc - 14 Vdc Input, 0.8 Vdc - 3.63 Vdc /30 A Outputs
• Manufacturer: BEL [Bel Fuse Inc.]

Input Filtering
The SLIN-30E1AL module should be connected to a low ac-impedance source. A highly inductive source can
affect the stability of the module. An input capacitor must be placed directly adjacent to the input pin of the
module, to minimize input ripple voltage and ensure module stability.
To minimize input voltage ripple, low-ESR polymer and ceramic capacitors are recommended at the input of the
module. The figure below shows the input ripple voltage for various output voltages at 30A of load current with
1x22µF, 2x22 µF or 2x47 µF ceramic capacitors and an input of 12V.
Output Filtering
The SLIN-30E1AL modules are designed for low output ripple voltage and will meet the maximum output ripple
specification with no external capacitors. However, additional output filtering may be required by the system
designer for a number of reasons. First, there may be a need to further reduce the output ripple and noise of the
module. Second, the dynamic response characteristics may need to be customized to a particular load step
change.
To reduce the output ripple and improve the dynamic response to a step load change, additional capacitance at
the output can be used. Low ESR ceramic and polymer are recommended to improve the dynamic response of
the module.
capacitance as specified in the electrical specification table.
achieved by using the Tunable Loop feature described later in this data sheet. The figure below shows the output
ripple voltage for various output voltages at 30A of load current with external 1x10µF, 1x47 µF, 2x47 µF or 4x47
µF ceramic capacitors and an input of 12V.
Jul. 26, 2010
NON-ISOLATED DC/DC CONVERTERS
6.0 Vdc - 14 Vdc Input, 0.8 Vdc – 3.63 Vdc /30 A Outputs
For stable operation of the module, limit the capacitance to less than the maximum output
Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302  Tel [phone]  Fax [phone] 
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Output Voltage (Vdc)
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1x10uF External Cap
1x47uF External Cap
2x47uF External Cap
4x47uF External Cap
Output Voltage (Volts)
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Bel Power Inc., a subsidiary of Bel Fuse Inc.
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1x22uF
2x22uF
2x47uF
Optimal performance of the module can be
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www.belfuse.com
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