TLE 8386-2EL Infineon Technologies, TLE 8386-2EL Datasheet - Page 25

• 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

In fixed frequency mode an external resistor determines the switching frequency. The minimum boost inductor for
fixed frequency is given by the formula below:
•
Following the previous equations the user should choose the boost inductor having sufficient saturation and RMS
current ratings.
The boost inductor value influences the current ripple I
•
•
Output diode D
Guidelines to choose the diode:
•
•
•
•
The average forward current in normal operation is equal to the boost converter output current I
current through the diode I
The power dissipation P
•
Data Sheet
L
A larger boost inductor value decreases the current ripple I
A lower boost inductor value increases the current ripple I
lower boost inductor value also results in higher input current ripple and greater core losses.
Fast switching diode
Low forward drop
Low reverse leakage current
It is recommended to choose the repetitive reverse voltage rating V
least 10V higher than the boost converter output voltage V
V
BOOSTMIN
D
= forward drop voltage of diode D
= minimum Inductance required (minimum value of L
BOOST
selection:
LOSSDIO
DPEAK
I
P
in the output diode D
DPEAK
(occurs in off-time of the power MOSFET) is:
LOSSDIO
L
BOOSTMIN
=
BOOST
I
=
BOOSTPEAK
I
(please refer to diode data sheet).
BOMAX
----------------------------------------------------------------- -
106
BOOST
V
23
10
BOOST
BO
=
V
3 –
is:
D
V
I
:
BOOSTMAX
V
BO
BOOST
BOOST
.
BOOST
R
f
, but provides faster transient response. A
CS
FREQ
, but reduces also the current loop gain.
RRM
)
(please refer to diode data sheet) at
Hz


1
+
-- -
2


Application Information
Rev. 1.0, 2010-10-25
TLE8386-2EL
BO
and the peak