VNQ830M_04 STMICROELECTRONICS [STMicroelectronics], VNQ830M_04 Datasheet - Page 10

• Manufacturer Part Number: VNQ830M_04
• Description: QUAD CHANNEL HIGH SIDE DRIVER
• Manufacturer: STMICROELECTRONICS [STMicroelectronics]

VNQ830M
Solution 2: A diode (D
A resistor (R
D
This small signal diode can be safely shared amongst
several different HSD. Also in this case, the presence of
the ground network will produce a shift (
input threshold and the status output values if the
microprocessor ground is not common with the device
ground. This shift will not vary if more than one HSD
shares the same diode/resistor network.
Series resistor in INPUT and STATUS lines are also
required to prevent that, during battery voltage transient,
the current exceeds the Absolute Maximum Rating.
Safest configuration for unused INPUT and STATUS pin
is to leave them unconnected.
LOAD DUMP PROTECTION
D
load dump peak voltage exceeds V
10/21
GND
ld
is necessary (Voltage Transient Suppressor) if the
if the device will be driving an inductive load.
GND
=1k
GND
should be inserted in parallel to
) in the ground line.
CC
max DC rating. The
j
600mV) in the
same applies if the device will be subject to transients on
the V
ISO T/R 7637/1 table.
If a ground protection network is used and negative
transients are present on the V
be pulled negative. ST suggests to insert a resistor (R
in line to prevent the C I/Os pins to latch-up.
The value of these resistors is a compromise between the
leakage current of
HSD I/Os (Input levels compatibility) with the latch-up limit
of C I/Os.
Calculation example:
For V
5k
Recommended R
C I/Os PROTECTION:
-V
CCpeak
CC
CCpeak
R
prot
line that are greater than the ones shown in the
/I
latchup
= - 100V and I
65k .
prot
R
value is 10k
C and the current required by the
prot
latchup
(V
OH C
CC
line, the control pins will
-V
20mA; V
IH
-V
GND
OH C
) / I
IHmax
4.5V
prot
)