ATA6827 Datasheet, PDF (13/15 Pages) ATMEL Corporation – High Temperature Triple Half-bridge Driver with Serial Input Control

ATA6827 [Preliminary]
10. Application Circuit
Figure 10-1. Application Circuit
V_CC
U5021M Enable
Watchdog
Micro-
controller
DI
4
CLK
5
CS
3
INH
8
DO
7
O
H L H LH L S
n. n. S n. n. n. n. n. n. S S S S S S R
u. u. C u. u. u. u. u. u. 3 3 2 2 1 1 R
Input register
Ouput register
Serial interface
P O S n. n. n. n. n. n. H L H L H L T
S P C u. u. u. u. u. u. S S S S S S P
F LD
3 3 2 21 1
Fault
detector
Fault
detector
Fault
detector
Control
logic
V_CC
Fault
detector
Fault
detector
Fault
detector
Thermal
protection
2
OUT3
12
OUT2
15
OUT1
M
M
Charge
pump
V_S
10 ^{VS BYT41D}
11
VS +
V_Batt
13V
UV
protection
Power on
reset
9
VCC
14
GND
17
GND
18
GND
6
GND
V_CC
V_CC
5V
+
11. 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:
Electrolytic capacitor C > 22 µF in parallel with a ceramic capacitor C = 100 nF. The value for
electrolytic capacitor depends on external loads, conducted interferences and reverse conduct-
ing current I_Out1,2,3 (see Section 4. ”Absolute Maximum Ratings” on page 7).
Recommended value for capacitors at V_CC:
Electrolytic capacitor C > 10 µF in parallel with a ceramic capacitor C = 100 nF.
To reduce thermal resistance it is recommended to place cooling areas on the PCB as close as
possible to the GND pins and to the die pad.
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4912C–AUTO–10/06