mc33911 Freescale Semiconductor, Inc, mc33911 Datasheet - Page 28

• Manufacturer Part Number: mc33911
• Description: Mc33911 Lin System Basis Chip With Dc Motor Pre-driver
• Manufacturer: Freescale Semiconductor, Inc

Open Load Detection
current through the high side is below the open-load current
threshold.
in the High Side Status Register (HSSR).
Current Limitation
combination with the over-temperature shutdown, the high
side driver is protected against over-current and short-circuit
failures.
indicated with the bit HS1CL in the HSSR.
excessive power might be dissipated.
Over-temperature Protection (HS Interrupt)
In case of an over-temperature condition, the high side driver
is shut down and the event is latched in the Interrupt Control
28
33911
FUNCTIONAL DEVICE OPERATIONS
OPERATIONAL MODES
The high side driver signals an open-load condition if the
The open-load condition is indicated with the HS1OP bits
The high side driver has an output current limitation. In
When the driver operates in the current limitation area, it is
Note: If the driver is operating in current limitation mode
The high side driver is protected against over-temperature.
MOD1:2
HS1OP
HS1CL
HVSE
HS1
Interrupt
Wakeup
Module
Module
Control
Control
Status
on/off
overtemperture shutdown (interrupt maskable)
Figure 17. High Side Driver HS1
high voltage shutdown (maskable)
High Side - Driver
open load detection
current limitation
charge pump
Module. The shutdown is indicated as an HS Interrupt in the
Interrupt Source Register (ISR).
setting the HS1OP and HS1CL bits simultaneously.
than an interrupt (IRQ) is generated.
the over-temperature condition is gone, will re-enable the
high side driver.
High-voltage Shutdown
shutdown is enabled (bit HVSE in the Mode Control Register
(MCR) is set), the high side driver is shut down.
gone, will re-enable the high side driver.
Sleep And Stop Mode
and Stop Mode for cyclic sensing. Also see
Operating Modes
A thermal shutdown of the high side driver is indicated by
If the bit HSM is set in the Interrupt Mask Register (IMR)
A write to the High Side Control Register (HSCR), when
In case of a high-voltage condition, and if the high-voltage
A write to the HSCR, when the high-voltage condition is
The high side driver can be enabled to operate in Sleep
PWMHS1
Overview.
V
DD
Analog Integrated Circuit Device Data
Freescale Semiconductor
VS2
V
DD
Table 5,
PWMIN
HS1