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PDF TLE8102SG Data sheet ( Hoja de datos )
| Número de pieza | TLE8102SG | |
| Descripción | Smart Dual Channel Powertrain Switch coreFLEX | |
| Fabricantes | Infineon Technologies | |
| Logotipo |  |
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Data Sheet, V1.4, May 2008
TLE8102SG
Smart Dual Channel Powertrain Switch
coreFLEX
Automotive Power
1 page  
TLE8102SG
Smart Dual Channel Powertrain Switch
Overview
2 Overview
2.1 Terms
Figure 2 shows all terms used in this Target Data Sheet.
Vbat
IVDD
VDD
IIN1
VIN1
I IN2
VIN2
I CS
VCS ISCLK
VSCLK
VSI
I SI
I SO I ST2
VSO / ST2 I IS1 / IS2 / ST1 / FAULT
VIS1 / IS2 / ST1 / FAULT
VDD
IN1
IN2
OUT1
OUT2
CS
SCLK
SI
CO2 [SO / ST2]
CO1 [IS1 / IS2 / ST1 / FAULT]
GND
I D1
I D2 VDS1
VDS2
I GND
Figure 2 Terms
In all tables of electrical characteristics is valid: Channel related symbols without channel number are valid for each
channel separately (e.g. VDS specification is valid for VDS1 and VDS2).
Data Sheet
5 V1.4, 2008-05-08
5 Page 
TLE8102SG
Smart Dual Channel Powertrain Switch
Electrical and Functional Description of Blocks
Maximum Load Inductance
During demagnetization of inductive loads, energy has to be dissipated in the TLE8102SG. This energy can be
calculated with following equation:
E = VDS(CL) ⋅
V-----b---a---t---–----V----D----S---(-C----L--)
RL
⋅
ln1
–
-----------R----L----⋅---I--D------------
Vbat – VDS(CL)
+ ID
⋅
--L----
RL
The equation simplifies under the assumption of RL = 0:
E
=
1--
2
L
ID2
⋅
1
–
-------------V-----b---a---t------------
Vbat – VDS(CL)
The energy, which is converted into heat, is limited by the thermal design of the component.
5.3.3 Protection Functions
The TLE8102SG provides embedded protective functions. Integrated protection functions are designed to prevent
IC destruction under fault conditions described in this data sheet. Fault conditions are considered “outside” the
normal operating range. Protection functions are not designed for continuous repetitive operation.
Over load and over temperature protections are implemented in the TLE8102SG. Figure 8 gives an overview pf
the protective functions.
INn
CS
SCLK
SI
SO
FAULT
ST
Input Control
SPI
Status
Tn
temperature
monitor
gate control
current
limitation /
s hut dow n
CLn
T
OU T n
Figure 8 Protection Functions
GND
5.3.3.1 Over Load Protection
The TLE8102SG is protected in case of over load or short circuit of the load. If the device is programmed for
current limitation (current limit 1), the current is limited to IDS(lim1). After time td(fault), the corresponding over load
flag CLn is set. If using the status outputs for diagnosis, the over load flag is cleared immediately after the over
load condition is no longer present. If using the SPI interface and fault pin for diagnosis, the over load flag of the
affected channel is cleared by the rising edge of the CS signal after a successful SPI transmission.
If the TLE8102SG is programmed for current shutdown (current limit 2), the current threshold is IDS(lim2). However,
unlike in current limit 1, after time td(fault), the affected channel is turned off and the according over load flag CLn is
set. To turn on the channel again, this overload latch has to be reset by turning off the affected channel with either
the parallel input or SPI. In addition, the switch off delay time can be programmed by changing the slew rate
setting. If using the SPI interface and fault pin for diagnosis in case of current limit 2, the over load flag of the
affected channel is cleared by the rising edge of the CS signal after a successful SPI transmission when the IN
pin is low. A valid SPI cycle would not lead to a reset of the OVL flag of the affected channel during the IN-Pin is
high.
In both cases, the channel may shut down due to over temperature.
Data Sheet
11 V1.4, 2008-05-08
11 Page | ||
| Páginas | Total 30 Páginas | |
| PDF Descargar | [ Datasheet TLE8102SG.PDF ] | |
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