TLE6214L_04 Datasheet, PDF (12/22 Pages) Infineon Technologies AG – Smart Dual Current Sense Switch

Datasheet TLE 6214 L
Diagnostic Table
In general the status follows the input signal in normal operating conditions.
If any error is detected the status is inverted.
Operating Condition
Control Power
Input Output
Filter
time
Status FAULT SPI diagnostic
Output Output
feedback
Channel _Channel
Diagnostic _overtemp
bits
. flag
MSB LSB
Sleep Mode
X
off
L
H- - -
Normal function
L
off
H
on
L
H HH L
H
H HH L
Short to ground¹⁾
Open load¹⁾
Under current¹⁾
“off” L
H
“off” L
“on” H
off ^{td(fault) H}
on ^{td(fault) L}
off ^{td(fault) H}
on ^{td(fault) L}
L LL L
L LH L
L LH L
L LH L
Overload or short to supply¹⁾ H
(Current limit 1 / Limitation)
on ^{td(fault) L}
L HL L
Overload or short to supply²⁾ H
(Current limit 2 / Shutoff)
off ^td(off)
L
L HL L
Overtemperature
(Restart mode)
H
off ³⁾
no
L
L HL H
Overtemperature
(Latch mode)
H
off ⁴⁾
no
L
L HL H
Note 1) Short to ground/open load/ under current /overload/short-to-supply - events shorter than min.
time td(fault) will not be latched and not reported at the diagnosis pins.
Note 2) Overload/short-to-supply - events shorter than min. time td(off) will not be latched and not
reported at the diagnosis pins.
Note 3) Off as long as overtemperature occurs, restart after cooling down.
Note 4) Shutdown latch reset by falling input edge
Analog Current Sensing :
The TLE6214L provides an analog current sensing function for both output channels. By SPI configura-
tion the multifunctional pin CO1 can sink a sense current proportional to the load current of one/ both of
the two output channels¹⁾. The specified current range and accuracy is described in the electrical char-
acteristics “5.Analog Current Sense Output”. To achieve the specified accuracy for current sensing the
voltage at the CO1 pin must always be U_CO1 ≥ 2V.
The specified current sense temperature deviation is related to the typical 25°C
1) _{At a low load current (<<200mA) and IC configured for current sense function an offset current at the CO1 occurs (typ. IS= 40µA @ ID=0A).}
V3.0
Page 12
18.10.2004