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參數資料
| 型號： | TLE8386EL |
| 廠商： | INFINEON TECHNOLOGIES AG |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | 0.09 A SWITCHING CONTROLLER, 500 kHz SWITCHING FREQ-MAX, PDSO14 |
| 封裝： | GREEN, PLASTIC, SSOP-14 |
| 文件頁數： | 9/26頁 |
| 文件大小： | 1527K |
| 代理商： | TLE8386EL |
TLE8386EL
Protection and Diagnostic Functions
Datasheet
17
Rev. 1.0, 2009-11-30
9
Protection and Diagnostic Functions
9.1
Description
The TLE8386EL has integrated circuits to diagnose and protect against output overvoltage, open load, open
feedback and overtemperature faults. In case any of the four fault conditions occur the Status output ST will output
an active logic low signal to communicate that a fault has occurred. During an overvoltage or open load condition
the gate driver outputs SWO will turn off. Figure 11 illustrates the various open load and open feedback conditions.
In the event of an overtemperature condition the integrated thermal shutdown function turns off the gate drivers
and internal linear voltage regulator. The typical junction shutdown temperature is 175°C. After cooling down the
IC will automatically restart operation. Thermal shutdown is an integrated protection function designed to prevent
immediate IC destruction and is not intended for continuous use in normal operation.
Figure 8
Protection and Diagnostic Function Block Diagram
Figure 9
Status Output Truth Table
Protection and
Diagnostic Circuit
Output
Overvoltage
Open Load
Overtemperature
OR
SWO Gate Driver
Off
Input
Output
P ro_Diag_B lc kDiag.v sd
Open Feedback
Linear Regulator
Off
Input
Undervoltage
OR
Overvoltage
Open Load
Overtemperature
L
P ro_Diag_TT .vsd
Level*
True
H
Sw*
Active
L
H
Sw*
L
Shutdown
H
Sw*
*Note:
Sw = Switching
False = Condition does not exist
True = Condition does exist
False
True
False
True
Open Feedback
L
H
Sw*
False
True
Active
False
ST
SWO
IVCC
Output
Input
Condition
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