U6815BM_09 Datasheet, PDF (12/14 Pages) ATMEL Corporation – Dual Hex DMOS Output Driver with Serial Input Control

Figure 13-2. Application Circuit
U5021M Enable
Watchdog
Micro-
controller
26
DI
25
CLK
24
CS
17
INH
18
DO
V_CC
M
HS1
15
Fault
detector
HS2
13
Fault
detector
HS3
12
Fault
detector
HS4
3
Fault
detector
S OH L H L H L H L H L H L S
SC LSS SSSS SSSS SSR
I T D6 6 5 5 4 4 3 3 2 2 1 1 R
Input Register
Ouput Register
P I SH L H LH LH L H LH L T
S NC S S S SS SS S S SS S P
F HD 6 6 5 5 4 4 3 3 2 2 1 1
Fault
detector
Fault
detector
Fault
detector
Fault
detector
16
14
11
4
LS1
LS2
LS3
LS4
M
HS5
HS6
2
28
V_S
Fault
detector
Osc
Control
logic
Fault
detector
1
LS5
Fault
detector
VS
OV -
protection
VS
UV -
protection
Thermal
protection
Power ON
Reset
VCC
Fault
detector
27
LS6
V_CC
5
VS
10
VS
6
GND
7
GND
8
GND
9
GND
20
GND
21
GND
22
GND
23
GND
19
VCC
BYT41D
+
V_CC
+
M
V_Batt
13V
V_CC
5V
V_S
V_S
14. Application Notes
It is strongly recommended to connect the blocking capacitors at V_CC and V_S as close as possi-
ble to the power supply and GND pins.
Recommended value for capacitors at V_S:
Electrolythic 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_HSx (see table Absolute Maximum Ratings).
Recommended value for capacitors at V_CC:
Electrolythic 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.
12 U6815BM
4545D–BCD–04/09