E520.01A61AC ELMOS Semiconductor, E520.01A61AC Datasheet - Page 17

• Manufacturer Part Number: E520.01A61AC
• Description: Motor / Motion / Ignition Controllers & Drivers 12x low side driver with Stall detection
• Manufacturer: ELMOS Semiconductor
• Type: Unipolar Stepper Motor Driverr

Specifications of E520.01A61AC

• Rohs: yes
• Product: Stepper Motor Controllers / Drivers
• Operating Supply Voltage: 3.3 V, 5 V
• Supply Current: 5 mA
• Operating Temperature: - 40 C to + 125 C
• Mounting Style: SMD/SMT
• Package / Case: QFN-32
• Number Of Outputs: 12
• Output Current: 300 mA
• Output Voltage: 3 V to 25 V
• Power Dissipation: 2.8 W

Open Load Detection
In order to detect an open load condition, each output
is equipped with a pull-down current source of typi-
cally 60µA, whose activation/deactivation may be con-
trolled with the PDEx fl ag in SPI register 0101
lows:
PDEx=0
source,
PDEx=1
source.
If there is no load connected between the output and
the battery supply, the pull-down source will tie the
Output Clamping
All driver outputs provide a clamping functionality for
inductive loads, which turns on the power transistor as
soon as the output voltage of the related channel ex-
ceeds a certain voltage level. There is a fi xed clamping
Table 2. Output Clamping
Note: Although the output drivers provide a clamping functionality for inductive loads, an external free wheeling diode to bat-
tery voltage level is recommended when using PWM modes with inductive load components in order to reduce power dissipation
of the IC. In this case the external clamping level must be lower than the internal clamping level under all supply voltage condi-
tions.
This document contains information on a pre-production product. ELMOS Semiconductor AG reserves the right to change specifi cations and information herein without notice.
CLMP[1:0]
X0
01
11
11
12 / 8 CHANNEL LOW SIDE DRIVER WITH STALL DETECTION
PRODUCTION DATA - JUL 24, 2012
ELMOS Semiconductor AG
b
b
b
b
b
b
corresponds to turned-off pull-down current
corresponds to enabled pull-down current
OUT11
OUT10
SCLK
OUT1
OUT0
OUT0
mode
CEB
SI
SO
ADR
SUP
3
ADR
OVT
2
PDEx
X
X
0
1
ADR
ATT
1
b
b
b
b
ADR
OC
READ
0
DI
11
DO
11
DI
10
DO
10
DI
DO
OUT11
OUT10
9
9
OUT1
DI
DO
8
8
DI
DO
7
7
Figure 7. Recovery from Short Circuit Shut-off
DI
DO
6
6
DI
DO
5
5
DI
DO
4
4
Clamping Level
V
V
V
“stepper motor clamping mode”
DI
DO
3
3
CL0
CL1
CL1
DI
DO
2
2
typically at >37V
typically at V
typically at V
DI
DO
b
1
1
as fol-
DO
DI
0
0
shut off
shut off
Data Sheet
17/29
output to ground potential and the related output sta-
tus fl ag STATx will be set to 0
tocol. The actual output states of all drivers are being
sampled after transmission of the 4 address bits Polling
the output status fl ags in the serial SPI protocol is the
appropriate way to detect if an open load condition is
present.
When the output has been disabled by writing a 1
into the shift register via the serial input SI (OUTx = in-
active HIGH) and the related output status fl ag STATx is
found in 0
cates that an open load condition is present.
between 37V and 50V which is permanently active. By
default the “stepper motor clamping mode” The fol-
lowing table summarises the possible clamping level
confi gurations:
ADR
SUP
3
BATsense
BATsense
ADR
OVT
2
ADR
ATT
1
ADR
OC
0
READ
or V
or V
DI
11
DO
11
b
OUT11
OUT10
OUT1
O
DI
10
DO
10
state in a subsequent SPI protocol, this indi-
CL0
CL0
DI
DO
9
9
typically at >37V (whatever is lower)
typically at >37V (whatever is lower)
DI
DO
8
8
DI
DO
7
7
DI
DO
6
6
DI
DO
5
5
DI
DO
4
4
E520.01/02/03/08
DI
DO
3
3
DI
DO
2
2
DI
DO
2
2
b
DI
DO
1
1
level in the next SPI pro-
QM-No.: 25DS0054E.02
DO
0
DI
0
OUT11
OUT10
active
ac c tive
OUT1
OUT0
ADR
SUP
3
b
bit