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AS8846 Datasheet(PDF) 11 Page - ams AG

Part # AS8846
Description  Programmable PWM DC Motor Driver / Controller
Download  35 Pages
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Manufacturer  AMSCO [ams AG]
Direct Link  http://www.ams.com
Logo AMSCO - ams AG

AS8846 Datasheet(HTML) 11 Page - ams AG

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Data Sheet AS8446
Revision 1.8, Date 2005-03-17
Page 11 of 35
Rising edge (switch on): Programmable Gate Drive Source Currents (13 bit)
Register / timing
part of rising edge
Programmable range
Programmable range
Unit
Note
R6<0> = 1, Acu_on/off
R6<0> = 0, Acu_on/off
min
max
step
min
max
step
R1<4:0> = SRon
(Vmotor = 12.7 V)
0
496
16
0
248
8
mA
R1<4:0> = SRon
(Vmotor = 30.7 V)
0
(1240)1
40
0
(620)1
20
mA
R1 = 0, 1, 2, … 31
R2<3:0> = SRon_stat
1.0
32
1.0
0.5
16
0.5
mA
R2 = 0, 1, 2, … 15
R3<2:0> = SRon_min
(Vmotor = -0.5 V)
20
160
20
10
80
10
mA
R3 = 0, 1, 2, … 7
Note (1):
The total driver current Iout_on must be limited to 500 mA (Iout_on < 500 mA ) in the real application with the given
Vmotor_max = Vbat by appropriate programming.
Table 11
Programming of the slew rate parameters (rising edge)
Figure 5
Rising edge of the motor voltage before and after the EMC optimization


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