TLE6389-3GV50 Infineon Technologies, TLE6389-3GV50 Datasheet - Page 35

• Manufacturer Part Number: TLE6389-3GV50
• Manufacturer: Infineon Technologies

Specifications of TLE6389-3GV50

• Dc To Dc Converter Type: Step Down
• Number Of Outputs: 1
• Pin Count: 14
• Input Voltage: 5 to 60V
• Output Voltage: 5/7 to 15V
• Output Current: 2.3A
• Package Type: DSO
• Mounting: Surface Mount
• Operating Temperature Classification: Automotive
• Operating Temperature (min): -40C
• Operating Temperature (max): 150C
• Lead Free Status / Rohs Status: Compliant

Datasheet Rev. 2.1
7.11
Device
C
C
L1
M1
C
D1
C
C
7.12
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
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.
To obtain the optimum filter capability of the input pi-filter it has to be located also as
close as possible to the input. To filter the supply input of the device (VS) the ceramic cap
should be connected directly to the pin.
As a guideline an EMC optimized application board / layout is available.
IN1
IN2
BDS
OUT
COMP
Type
Electrolytic /Foil type
Ceramic
B82464-A4473
B82479-A1473-M
DO3340P-473
DO5022P-683
DS5022P-473
BSO 613SPV
BSP 613P
SPD09P06PL
Ceramic
MBRD360
MBRD340
SS34
B45197-A2107
Ceramic
Components recommendation - overview
Layout recommendation
Supplier
various
various
EPCOS
EPCOS
Coilcraft
Coilcraft
Coilcraft
Infineon
Infineon
Infineon
various
Motorola
Motorola
various
EPCOS
various
IN1
35
have to be connected as close as possible to
100 F, 60V
220nF, 60V
47 H, 1.6A, 145m
47 H, 3.5A, 47m
47 H, 3.8A, 110m
68 H, 3.5A, 130m
47 H, 4.0A, 97m
60V, 3.44A, 130m , NL
60V, 2.9A, 130m , NL
60V, 9A, 250m , LL
220nF, 16V
Schottky, 60V, 3A
Schottky, 40V, 3A
Schottky, 40V, 3A
Low ESR Tantalum, 100 F, 10V
see 7.10.9.
Remark
TLE 6389
2007-08-13