TLE 8386-2EL Infineon Technologies, TLE 8386-2EL Datasheet - Page 24

• 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

The value of the sense resistor R
•
Boost inductor L
The important parameters for selecting the boost inductor are:
•
•
•
The maximum average inductor current is:
The ripple current through the boost inductor is:
The peak current through the boost inductor is:
(The peak current trough the boost inductor must be smaller than the saturation current threshold!)
The RMS current through the boost inductor is:
The boost inductor value L
Data Sheet
I
Inductor L
Maximum RMS current rating I
Saturation current threshold I
BOOSTPEAK
BOOST
= peak current through the boost inductor L
BOOST
selection:
BOOST
I
I
BOOST
BOOSTPEAK
can be calculated by the following equation:
BOOSTSAT
CS
BOOSTRMS
can be calculated as follows:
I
I
L
BOOSTMAX
BOOSTRMS
=
BOOST
for thermal design
R
=
I
CS
BOOSTMAX
=
I
BOOSTMAX
=
------------------------------------------
=
=
I
BOOST
0 80
--------------------------------- -
I
I
I
BOOSTMAX
,
BOMAX
BOOSTPEAK
22
V
INMIN
BOOST
=
V
SWCS
f


(will be calculated at boost inductor selection)
FREQ
1
----------------------- -
1 D
+
I
–
BOMAX
-- -
2
1


1
MAX
D
+
MAX
I
----- -
12
BOOSTSAT
2
----------------------- -
1 D
–
1
MAX
Application Information
Rev. 1.0, 2010-10-25
TLE8386-2EL