STPIC44L02 STMicroelectronics, STPIC44L02 Datasheet - Page 15

• Manufacturer Part Number: STPIC44L02
• Description: 4 CHANNEL SERIAL AND PARALLEL LOW SIDE PRE-FET DRIVER
• Manufacturer: STMicroelectronics

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turned off. After the deglitch delay time, the drain
is checked to verify that it is greater than the fault
reference voltage. When it is less than the
reference voltage, a fault is flagged to the
microcontroller through FLAT that an open-load
fault condition exists. The microcontroller can then
read the serial port on the STPiC44L02 to isolate
the channel that reported the fault condition. Fault
bits 0-3 distinguish faults for each of the output
Figure 17 : Open Load Short Circuit test Circuitry
Figure 18 : Normal Condition Driving Load
channels. Figures 18 and 19 illustrate the
operation of the open-load detection circuit. This
feature
microcontroller to isolate system failures and warn
the operator that a problem exists. Examples of
such applications would be a warning that a light
bulb filament may be open, solenoid coils may be
open, etc.
provides
useful
information
STPIC44L02
to
15/21
the