T6818 ATMEL [ATMEL Corporation], T6818 Datasheet - Page 13

• Manufacturer Part Number: T6818
• Description: Triple Halfbridge DMOS Output Driver with Serial Input Control
• Manufacturer: ATMEL [ATMEL Corporation]

10. Application Circuit
10.1
4530G–BCD–09/05
Application Notes
Watchdog
U5021M
V
CC
V
CC
Enable
It is strongly recommended to connect the blocking capacitors at V
ble to the power supply and GND pins.
Recommended value for capacitors at V
Electrolytic capacitor C > 22 µF in parallel with a ceramic capacitor C = 100 nF. Value for elec-
trolytic capacitor depends on external loads, conducted interferences and reverse conducting
current I
Recommended value for capacitors at V
Electrolytic capacitor C > 10 µF in parallel with a ceramic capacitor C = 100 nF. To reduce ther-
mal resistance it is recommended to place cooling areas on the PCB as close as possible to the
GND pins. Negative spikes at the output pins (e.g. negative spikes caused by an inductive load
switched off with a high side driver) may activate the overtemperature protection function of the
T6818/ATA6828. In this condition, all outputs will be switched off simultaneously. If this behavior
is not acceptable or compatible with your application functionally, it is necessary, that for switch-
ing on required outputs again, the SRR bit (Status Register Reset) is set, to ensure a reset of the
overtemperature function.
CLK
INH
DO
CS
DI
10
5
6
4
9
Out1,2,3
S
P
F
n.
u.
Output register
(see
Input register
O
P
L
n.
u.
detect
detect
Fault
Fault
C
O
S
S
D
C
“Absolute Maximum Ratings” on page
n.
u.
n.
u.
OUT3
2
n.
u.
n.
u.
n.
u.
n.
u.
detect
M
Fault
detect
Fault
n.
u.
n.
u.
n.
u.
n.
u.
12
OUT2
n.
u.
n.
u.
H
S
3
H
S
3
Serial interface
S
L
3
S
3
L
detect
Fault
detect
M
Fault
H
S
2
H
S
2
L
S
2
S
L
2
S
CC
13
OUT1
:
H
S
1
H
S
1
:
S
L
1
L
S
1
S
R
R
T
P
protection
Thermal
Control
logic
7).
protection
Power-on
Charge
pump
reset
UV
T6818/ATA6828
CC
and V
11
14
3
1
7
8
GND
GND
GND
GND
VCC
VS
S
as close as possi-
V
S
+
V
CC
BYT41D
+ +
V
13 V
Batt
V
5 V
CC
13