TLE7236G Infineon Technologies, TLE7236G Datasheet - Page 13

• Manufacturer Part Number: TLE7236G
• Description: IC DRIVER SPI 8CH HS/LS DSO-20
• Manufacturer: Infineon Technologies
• Type: High Side/Low Side Driverr

Specifications of TLE7236G

• Input Type: SPI
• Number Of Outputs: 8
• On-state Resistance: 850 mOhm
• Current - Peak Output: 1A
• Voltage - Supply: 9 V ~ 28 V
• Operating Temperature: -40°C ~ 150°C
• Mounting Type: Surface Mount
• Package / Case: DSO-20
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Current - Output / Channel: -
• Other names: SP000297866

5
The TLE7236G is supplied by two supply voltages
and used by the power switches and by an integrated power supply for the register banks. The internal power
supply is designed to hold the state of the power switches including the configuration stored in the control register
bank during cranking down to 4V. There is an under voltage reset function implemented for the
After start-up of the power supply, all SPI registers are reset to their default values and the device is in sleep mode
(standby). The SPI command CMD.WAKE = 1 is switching the device to operation mode (ON), while a command
CMD.STB = 1 send the device to sleep mode (standby) again.
The
daisy chain function is available as soon as
between pins
5.1
There is a limp home functionality implemented in the TLE7236G, which is activated via pin LHI. Please refer to
Section 5.2
The device provides a sleep mode (stand by) to minimize current consumption, which also resets the register
banks. It is entered and left by dedicated SPI commands . The sleep mode current is minimized only when limp
home is inactive. After limp home, the device enters sleep mode automatically.
The internal power supply is designed for low voltage cranking condition down to
output channels keep their state as before configured via SPI independent of
SPI can not be used as the output and input levels refer to
the limp home mode is triggered or the
The following table shows the operation modes depending on
Operation Modes
VBB
VDD
LHI
Switches operating
Limp Home
SPI & daisy-chain
Register Banks
Diagnostic functions
5.2
The TLE7236G offers the capability of driving dedicated channels during fail-safe operation of the system. This
limp home mode is activated by a high signal at pin LHI. In limp home mode, the SPI registers are reset and the
input pins are directly routed to the auto configuring channels (channel 4 and 5). As a result, the limp home
operation can be chosen for high-side and low-side driven loads.
Due to the integrated power supply, limp home operation is independent of digital power supply
stand-by, a high signal at pin LHI will wake up the device. After limp home operation, the device enters sleep mode
in any case.
Data Sheet
V
DD
supply line is used by the SPI shift register related circuitry and for driving the SO line. As a result, the
for details.
Power Supply
Operation Modes
Limp Home Mode
V
DD
and GND is recommended (especially in case of EMI).
0 V
0 V
X
-
-
-
reset
-
V
DD
V
voltages comes back and therefore the SPI Interface works again.
DD
0 V
5 V
0 V
-
-
✓
reset
-
is provided in the specified range independent of
V
bb
0 V
5 V
5 V
-
-
✓
reset
-
and
13
V
V
DD
4 V
0 V
0 V
✓
-
-
✓
-
DD
. The
V
, but the device keep the current state until either
bb
,
V
4 V
0 V
4 V
✓
✓
-
reset
-
V
DD
bb
and the limp home input signal LHI.
supply line is connected to a battery feed
4 V
3 V
0 V
✓
-
✓
✓
-
V
DD
supply voltage. If
V
12 V
0 V
0 V
✓
-
-
✓
✓
bb
= 4 V. During cranking, the
12 V
0 V
5 V
✓
✓
-
reset
-
Rev. 1.0, 2008-10-30
V
bb
V
V
Power Supply
12 V
5 V
0 V
✓
-
✓
✓
✓
bb
power supply.
V
DD
TLE7236G
. A capacitor
DD
. In case of
= 0 V the
12 V
5 V
5 V
✓
✓
✓
reset
-