TLE 8386-2EL Infineon Technologies, TLE 8386-2EL Datasheet - Page 26

• 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

Output filter capacitor C
Choosing the correct output capacitor for given output ripple voltage, the influence of
•
•
•
The effects of these three parameters is additional ringing on the output voltage V
The voltage ripple at the output voltage V
•
•
•
The output capacitor can be calculated using the following equation (which contains the influence of the bulk
capacitance on the output voltage ripple):
Influence of the capacitor ESR on the output voltage ripple:
The output capacitor experiences high RMS ripple currents, the RMS ripple current rating can be determined using
the following formula:
•
To meet the ESR requirements often multiple capacitors are paralleled. Typically, once the ESR requirement is
met, the output capacitance is adequate for filtering and has the required RMS current rating. Additional ceramic
capacitors are commonly used to reduce the effects of parasitic inductance to reduce high frequent switching
noise on the boost converter output.
Data Sheet
ESR = equivalent series resistance,
ESL = equivalent series inductance and
bulk capacitance have to be considered.
To receive the total voltage ripple, the influence of V
I
COUTRMS
V
V
ESR
COUT
: in percent, related to the ESR of the output capacitor(s)
: in percent, related to the bulk capacitance of the output capacitor(s)
= RMS ripple current rating at switching frequency I
OUT
selection:
C
I
COUTRMS
OUT
BO
depends on:
-------------------------------------------------------------- -
ESR
V
COUT
I
BOMAX
COUT
24
I
ESR
BOMAX
V
and V
OUT
----------------- -
I
DPEAK
FREQ
V
----------------------- -
1 D
ESR
D
–
COUT
.
f
FREQ
MAX
MAX
must be counted together.
BO
.
Application Information
Rev. 1.0, 2010-10-25
TLE8386-2EL