SLIN-02E2A BEL [Bel Fuse Inc.], SLIN-02E2A Datasheet - Page 18

• Manufacturer Part Number: SLIN-02E2A
• Description: NON-ISOLATED DC/DC CONVERTERS
• Manufacturer: BEL [Bel Fuse Inc.]

Tunable Loop
The SLIN-02E2Ax modules have a new feature that optimizes transient response of the module called Tunable
Loop
External capacitors are usually added to the output of the module for two reasons: to reduce output ripple and
noise and to reduce output voltage deviations from the steady-state value in the presence of dynamic load
current changes. Adding external capacitance however affects the voltage control loop of the module, typically
causing the loop to slow down with sluggish response. Larger values of external capacitance could also cause
the module to become unstable.
The Tunable Loop
connected to the output of the module. The Tunable Loop
between the SENSE and TRIM pins of the module, as shown below. This R-C allows the user to externally
adjust the voltage loop feedback compensation of the module.
Recommended values of R
3. Table 2 shows the recommended values of R
up to 470uF that might be needed for an application to meet output ripple and noise requirements. Selecting
R
In applications with tight output voltage limits in the presence of dynamic current loading, additional output
capacitance will be required. Table 3, 4, and 5 list recommended values of R
output voltage deviation limits for some common output voltages in the presence of a 1A to 2A step change
(50% of full load), with an input voltage of 12V, 5V, and 3.3V, respectively.
January 14, 2011
TUNE
NON-ISOLATED DC/DC CONVERTERS
3 Vdc - 14 Vdc Input, 0.6 Vdc - 5.5 Vdc /2 A Outputs
TM
and C
.
Circuit diagram showing connection of R
TUNE
Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 • Tel [phone] • Fax [phone] •
according to Table 2 will ensure stable operation of the module.
TM
TM
allows the user to externally adjust the voltage control loop to match the filter network
TUNE
and C
MODULE
TUNE
GND
for different output capacitor combinations are given in Tables 2 and
SENSE
VOUT
TRIM
TUNE
Bel Power, Inc. , a subsidiary of Bel Fuse, Inc.
TUNE
and C
and C
TUNE
TUNE
TM
RTUNE
CTUNE
RTrim
for different values of ceramic output capacitors
to tune the control loop of the module
is implemented by connecting a series R-C
C O
TUNE
and C
TUNE
in order to meet 2%
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18