MC33912G5AC Freescale, MC33912G5AC Datasheet - Page 78

• Manufacturer Part Number: MC33912G5AC
• Manufacturer: Freescale

Specifications of MC33912G5AC

• Turn Off Delay Time: 10us
• Number Of Drivers: 4
• Operating Temperature (min): -40C
• Operating Temperature (max): 125C
• Operating Temperature Classification: Automotive
• Lead Free Status / RoHS Status: Compliant

LOW SIDE OUTPUT PINS LS1 AND LS2
relays incorporating the following features:
Low Side Control Register (LSCR).
Open Load Detection
current through the low side is below the open load current
threshold.
and LS2OP in the Low Side Status Register (LSSR).
Current Limitation
combination with the over-temperature shutdown the low
side drivers are protected against over-current and short-
circuit failures.
indicated with the bits LS1CL and LS2CL in the LSSR.
excessive power might be dissipated.
Over-temperature Protection (LS Interrupt)
temperature. In case of an over-temperature condition both
78
33912
FUNCTIONAL DEVICE OPERATIONS
OPERATIONAL MODES
These outputs are two low side drivers intended to drive
• PWM capability (software maskable)
• Open load detection
• Current limitation
• Over-temperature shutdown (with maskable interrupt)
• Active clamp (for driving relays)
• High-voltage shutdown (software maskable)
The low side switches are controlled by the bit LS1:2 in the
Each low side driver signals an open load condition if the
The open load condition is indicated with the bit LS1OP
Each low side driver has a current limitation. In
When the drivers operate in current limitation, this is
Note: If the drivers are operating in current limitation mode
Both low side drivers are protected against over-
MOD1:2
LSxOP
LSxCL
HVSE
LSx
Interrupt
Module
Control
Control
Status
on/off
Figure 41. Low Side Drivers LS1 and LS2
Over-temperture Shutdown (interrupt maskable)
High-voltage shutdown (maskable)
Open-load Detection
Low Side Driver
Current Limitation
(active clamp)
inductive load (relay) is turned off. An active clamp will re-
enable the low side FET if the voltage on the LS1 or LS2 pin
exceeds a certain level.
PWM Capability (direct access)
direct control via the PWMIN pin.
Control Register (LSCR), then the LS1 driver is turned on if
the PWMIN pin is high and turned off if the PWMIN pin is low.
The same applies to the LS2 and PWMLS2 bits for the LS2
driver.
low side drivers are shut down and the event is latched in the
Interrupt Control Module. The shutdown is indicated as an LS
Interrupt in the Interrupt Source Register (ISR).
than an Interrupt (IRQ) is generated.
over-temperature condition is gone, will re-enable the low
side drivers.
High-voltage Shutdown
shutdown is enabed (bit HVSE in the Mode Control Register
(MCR) is set) both low sides drivers are shut down.
high-voltage condition is gone, will re-enable the low side
drivers.
Sleep And Stop Mode
Also see
To protect the device against over-voltage when an
Each low side driver offers additional (to the SPI control)
If both the bits LS1 and PWMLS1 are set in the Low Side
If the bit LSM is set in the Interrupt Mask Register (IMR)
A write to the Low Side Control Register (LSCR), when the
In case of a high-voltage condition and if the high-voltage
A write to the Low Side Control Register (LSCR), when the
The low side drivers are disabled in Sleep and Stop mode.
PWMLSx
Table
37.
V
DD
Analog Integrated Circuit Device Data
active
clamp
Freescale Semiconductor
PGND
V
DD
PWMIN
LSx