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PDF TLE8386EL Data sheet ( Hoja de datos )
| Número de pieza | TLE8386EL | |
| Descripción | Smart Boost Controller | |
| Fabricantes | Infineon Technologies | |
| Logotipo |  |
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TLE8386EL
Smart Boost Controller
Datasheet
Rev. 1.0, 2009-11-30
Automotive Power
1 page  
3 Pin Configuration
3.1 Pin Assignment
TLE8386EL
Pin Configuration
,9&&
6:2
6*1'
6:&6
1&
)%+
)%/
SLQFRQILJBVVRSVYJ
,1
(1
*1'
)5(46<1&
67
29)%
&203
Figure 2 Pin Configuration
3.2 Pin Definitions and Functions
Pin Symbol
1 IVCC
2 SWO
3 SGND
4 SWCS
5 NC
6 FBH
7 FBL
8 COMP
Function
Internal LDO Output;
Used for internal biasing and gate drive. Bypass with external capacitor. Do not
leave pin IVCC open.
Switch Output;
Connect to gate of external boost converter switching MOSFET
Current Sense Ground;
Ground return for current sense switch
Current Sense Input;
Detects the peak current through switch
No Connect;
Voltage Feedback Positive;
Non inverting Input (+)
Voltage Feedback Negative;
Inverting Input (-)
Compensation Input;
Connect R and C network to pin for stability
Datasheet
5 Rev. 1.0, 2009-11-30
5 Page 
TLE8386EL
Oscillator and Synchronization
6 Oscillator and Synchronization
6.1 Description
R_OSC vs. switching frequency
The internal oscillator is used to determine the switching frequency of the boost regulator. The switching frequency
can be selected from 100 kHz to 500 kHz with an external resistor to GND. To set the switching frequency with an
external resistor the following formula can be applied.
( ) ( ) ( )[ ] [ ] [ ] [ ]R FREQ
=
1
141 × 10 −12
s
Ω
×
f FREQ
1
s
− 3 .5 × 10 3 Ω
Ω
In addition, the oscillator is capable of changing from the frequency set by the external resistor to a synchronized
frequency from an external clock source. If an external clock source is provided on the pin FREQ/SYNC, then the
internal oscillator synchronizes to this external clock frequency and the boost regulator switches at the
synchronized frequency. The synchronization frequency capture range is 250 kHz to 500 kHz.
VCLK
FREQ
/ SYNC
R FREQ
Oscillator
Clock Frequency
D etec tor
TLE8386
Multiplexer
PWM
Logic
Gate
Driver
SWO
Oscillator_ BlkDiag.vsd
Figure 4 Oscillator and Synchronization Block Diagram and Simplified Application Circuit
96<1&
9
96<1&+
9 96<1&/
W6<1&75
W6<1&75
76<1& I6<1&
W6<1&3:+
Figure 5 Synchronization Timing Diagram
W
2VFLOODWRUB7LPLQJVYJ
Datasheet
11 Rev. 1.0, 2009-11-30
11 Page | ||
| Páginas | Total 26 Páginas | |
| PDF Descargar | [ Datasheet TLE8386EL.PDF ] | |
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