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參數資料
| 型號： | TLE6389GVT |
| 廠商： | INFINEON TECHNOLOGIES AG |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | SWITCHING CONTROLLER, 420 kHz SWITCHING FREQ-MAX, PDSO14 |
| 封裝： | PLASTIC, DSO-14 |
| 文件頁數： | 28/37頁 |
| 文件大小： | 368K |
| 代理商： | TLE6389GVT |
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TLE 6389
Preliminary data sheet Rev. 1.0
34
2003-05-05
7.11
Components recommendation - overview
7.12
Layout recommendation
The most sensitive points for Buck converters - when considering the layout - are the
nodes at the input, output and the gate of the PMOS transistor and the feedback path.
For proper operation and to avoid stray inductance paths the external catch diode, the
Buck inductance and the input capacitor C
IN1 have to be connected as close as possible
to the PMOS device. Also the GDRV path from the controller to the MosFet has to be as
short as possible. Best suitable for the connection of the cathode of the catch diode and
one terminal of the inductance would be a small plain located next to the drain of the
PMOS.
The GND connection of the catch diode must be also as short as possible. In general the
GND level should be implemented as surface area over the whole PCB as second layer,
if necessary as third layer. The feedback path has to be well grounded also, a ceramic
capacitance might help in addition to the output cap to avoid spikes.
Device
Type
Supplier
Remark
C
IN1
Electrolythic /Foil type
various
100
F, 60V
C
IN2
Ceramic
various
220nF, 60V
L1
B82464-A4473
EPCOS
47
H, 1.6A, 145m
B82479-A1473-M
EPCOS
47
H, 3.5A, 47m
DO3340P-473
Coilcraft
47
H, 3.8A, 110m
DO5022P-683
Coilcraft
68
H, 3.5A, 130m
DS5022P-473
Coilcraft
47
H, 4.0A, 97m
M1
BSO 613SPV
Infineon
60V, 3.44A, 130m
, NL
BSP 613P
Infineon
60V, 2.9A, 130m
, NL
SPD09P06PL
Infineon
60V, 9A, 250m
, LL
C
BDS
Ceramic
various
220nF, 16V
D1
MBRD360
Motorola
Schottky, 60V, 3A
MBRD340
Motorola
Schottky, 40V, 3A
SS34
various
Schottky, 40V, 3A
C
OUT
B45197-A2107
EPCOS
Low ESR Tantalum, 100
F, 10V
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