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參數(shù)資料
| 型號(hào)： | TLE6389-3GV50 |
| 廠(chǎng)商： | INFINEON TECHNOLOGIES AG |
| 元件分類(lèi)： | 穩(wěn)壓器 |
| 英文描述： | 2.3 A SWITCHING CONTROLLER, 420 kHz SWITCHING FREQ-MAX, PDSO14 |
| 封裝： | PLASTIC, SOP-14 |
| 文件頁(yè)數(shù)： | 20/38頁(yè) |
| 文件大小： | 1233K |
| 代理商： | TLE6389-3GV50 |
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TLE 6389
Datasheet Rev. 2.1
27
2007-08-13
7
Application information
Note: The following information is given as a hint for the implementation of the device
only and shall not be regarded as a description or warranty of a certain
functionality, condition or quality of the device.
7.1
General
The TLE 6389 step-down DC-DC controllers are designed primarily for use in
Automotive applications where high input voltage range requirements have to be met.
Using an external P-MOSFET and current-sense resistor allows design flexibility and the
improved efficiencies associated with high-performance P-channel MOSFETs. The
unique, peak current-limited, PWM/PFM control scheme gives these devices excellent
efficiency over wide load ranges, while drawing around 100A current from the battery
under no load condition. This wide dynamic range optimizes the TLE 6389 for
automotive applications, where load currents can vary considerably as individual circuit
blocks are turned on and off to conserve energy. Operation to a 100% duty cycle allows
the lowest possible dropout voltage, maintaining operation during cold cranking. High
switching frequencies and a simple circuit topology minimize PC board area and
component costs.
7.2
Typical application circuits
Note: These are very simplified examples of an application circuit. The function must be
verified in the real application
.
Figure 2
Application circuit TLE6389-2 GV50 and TLE6389-3 GV50
M1
D1
COUT =
100
F
V
OUT
C
BDS=
220 nF
V
IN
L1 =47 H
GDRV
BDS
FB
GND
SI_ENABLE
VS
CIN1=
100
F
ON OFF
CS
R
SENSE=
47m
M1: Infineon BSO613SPV
Infineon BSP613P
D1:
Motorola MBRD360
L1:
EPCOS B82479-A1473-M
Coilcraft DO3340P-473
CIN1: Electrolythic
CIN2: Ceramic
COUT: Low ESR Tantalum
SI_GND
SI
RSI1=
400k
CIN2 =
220nF
RSI2=
100k
COMP
SO
RO
SYNC
V
OUT
I
OUT
TLE6389-2 GV50
TLE6389-3 GV50
11
14
12
2
3
9
8
10
4
5
1
7
13
6
VOUT
2.2nF 680
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