TLE 8386-2EL Infineon Technologies, TLE 8386-2EL Datasheet - Page 27

• Manufacturer Part Number: TLE 8386-2EL
• Manufacturer: Infineon Technologies

Specifications of TLE 8386-2EL

• Packages: PG-SSOP-14
• Comment: LS-sense-booster (prefered as voltage source);Can be used in SEPIC- or FLYBACK-configuration as wellMax. output current dependent on output voltage.
• Vq (max): adj (max 9-times of VS)
• Iq (max): -
• Iq (typ): 7,000.0 µA
• Output: Boost Converter

Input filter capacitor C
The input filter capacitor C
recommended values are from 10µF to 100µF, to improve the suppression of high frequent distortions a parallel
ceramic capacitor might be necessary.
The RMS input capacitor ripple current I
Compensation network elements R
To compensate the feedback loop of the TLE8386-2EL a series network of R
pin COMP to ground. For most applications the capacitor C
resistor R
stability. C
A practical approach to determine the compensation network is to start with the application circuit as shown in the
data sheet and tune the compensation network to optimize the performance. Stability of the loop should then be
checked under all operating conditions, including output current and variations and over the entire temperature
range.
Output boost voltage V
•
(V
Additional input filter inductor L
•
The input filter inductor L
low ESR ceramic capacitor. Both elements are forming a low pass filter to suppress conducted disturbances on
the V
times lower than the switching frequency f
The use of an additional input filter is depending on the requirements of the application.
For selection of R
Data Sheet
BO
V
f
FILTER
FB
is always higher than V
IN
line. To obtain an optimum suppression, the input filter resonance frequency f
= feedback reference voltage
COMP
= resonance frequency of the additional input filter
COMP
should be in the range of 5k to 100k . An additional capacitor C
and C
FREQ
COMP2
, C
IN1
BO
SST
INPUT
IN1
selection:
should be a low ESR ceramic capacitors.
adjustment by determining the output voltage resistor divider R
IN
and C
has to compensate the alternate current content or current ripple on the input line,
should have a saturation current value equal to L
during operation of the boost converter)
f
FREQ
INPUT
IVCC
COMP
please refer to previous chapters.
and capacitor C
IN1RMS
10
V
FREQ
, C
I
BO
IN1RMS
COMP
:
for a boost converter is:



=
f
FILTER
selection:
V
FB
=
25
0 30
IN2
=
,
R
--------------------------------
COMP
selection:
------------------------------------------------
2
FBH
R
should be in the range of 470pF to 22nF, and the
FBL
+
L
I
BOOST
INPUT
R
FBL
1
COMP
C
IN2
BOOST
, C
COMP2



COMP
, capacitor C
FILTER
might be usefull to improve
Application Information
is usually connected from
should be at least ten
Rev. 1.0, 2010-10-25
TLE8386-2EL
FBH
IN2
, R
should be a
FBL
: