TLE84110EL Infineon Technologies, TLE84110EL Datasheet - Page 18

• Manufacturer Part Number: TLE84110EL
• Manufacturer: Infineon Technologies

Specifications of TLE84110EL

• Packages: PG-SSOP-24
• Ipeak: 10 x 0.8
• Inhibit: y
• Iq (typ): 2.0 µA
• Mounting: SMIT
• Technology: BCD

5.4
This device features embedded protective functions which are designed to prevent IC destruction under fault
conditions described in the following sections. Fault conditions are treated as “outside” normal operating range.
Protection functions are not designed for continuous repetitive operation.
5.4.1
The high-side switches are protected against short to ground where as the low-side switches are protected against
short to supply.
If a switch is turned on and the current rises above the overcurrent shutdown threshold,
shutdown delay time
this delay time, the current is limited to
remains set until a status register reset is sent to the SPI or a power-on reset is performed.
..
Figure 7
5.4.2
Open-load detection in ON-state is implemented in the Low-Side switches of the bridge outputs: If the current
through the low side transistor is lower than the reference current
detection delay time
remains ON. The open load error bit is latched and can be reset by the SPI status register reset or by a power-on
reset.
As an example, if a motor is connected between outputs OUT 1 and OUT 2 with a broken wire as shown in
Figure
Open Load Detection Shutdown (OL SD EN) Bit via the Control Register can be activated or deactivated as
required. If the OL SD EN bit is set and an open load on the Low-Side Switch is detected, the respective output is
disabled. The error remains latched and output is off until an SRR or power on reset is performed. This has the
added advantage of independently diagnosing and isolating error flags to the corresponding failed output.
Data Sheet
8, the resulting diagnostic information is shown in
Protection and Diagnosis
Short Circuit of Output to Supply or Ground
High-Side and Low-Side Switch - Short Circuit and Overcurrent Protection
Open Load
t
t
dSD
dOLD
, the output transistor is turned off and the corresponding diagnosis bit, OC, is set. During
, the corresponding open-load, OL diagnosis bit is set. The output transistor, however,
I
SC
as shown in
18
Figure
Table
7. The output stage remains off and the error bit
2.
I
OLD
in ON-state for longer than the open-load
Deci Half Bridge IC
I
SD
Rev. 1.0, 2010-04-27
Block Description
for longer than the
TLE84110EL