E910.72A61DC ELMOS Semiconductor, E910.72A61DC Datasheet - Page 26

• Manufacturer Part Number: E910.72A61DC
• Description: Motor / Motion / Ignition Controllers & Drivers 6x HVAC motor driver/pulse count
• Manufacturer: ELMOS Semiconductor
• Type: DC Motor 6x Half Bridger

Specifications of E910.72A61DC

• Rohs: yes
• Product: Brushed DC Motor Drivers
• Operating Supply Voltage: 5 V
• Supply Current: 3 mA
• Operating Temperature: - 40 C to + 85 C
• Mounting Style: SMD/SMT
• Package / Case: QFN-32
• Number Of Outputs: 5
• Output Current: 100 mA
• Output Voltage: 6 V to 19 V
• Power Dissipation: 1 W

1) Table column in bit order [10:17] or [10:17,20:27,30:37] is only for ELMOS production test purpose
5.3 Motor Driver Half bridges
The IC features six half bridge driver outputs. Switching these drivers on and off is performed by SPI commands
(see 5.2). Using an address scheme as shown in Chapter 5.2.2, the six half bridges can be used to drive 3 DC motors
simultaneously, or up to 5 motors sequentially. In case outputs are not needed for DC motor control, they can be
used to drive other kinds of loads like as well, such as relays.
Each half bridge output features bias-free switching, slew rate control, current limitation and overcurrent shut-off.
Any half bridge output is shut off into tristate mode after current limitation has been continuously detected for
a debounce time of typically 500μs. Output DRB is activated to indicate that diagnostic data is present. A corre-
sponding SPI command has to be sent in order to turn the output on again.
A common overtemperature shut-off switches all outputs into tristate mode when a chip temperature of greater
than the shut off temperature T
is present. After cooling down by the hysteresis T
mand.
5.3.1 High impedance state of Half bridge outputs in Motor Control Mode
To brake a motor from movement and count pulses until it has actually stopped, it is necessary to switch on both
low side transistors of the related half bridges. On the other hand to avoid unintended current flow through mo-
tors that are not addressed, it is mandatory to switch all half bridges, that are not involved in driving the addressed
motor, into high impedance state (tristate). Therefore, each pair of half bridges switches back into tristate after
a motor stop has been detected, i.e. 100ms after the last ripple has been detected in brake mode (both low side
transistors on).
Command description
Write configuration
register 2:
NonLinNorm[1:0]=01
NonLinBreak[1:0]=11
PulsTNorm[2:0]=010
PulsTBreak[2:0]=010
Bosch Motor
Read hardware error
(Conf. register error)
Acknowledge hardware
error
signal on txD (from iC to µC)
Parity error on last RXD
transfer
Position data available
Position data of ripple
detector no. 1 with 13
pulses
DC Motor 6 x Half briDgE witH ripplE CoUnt
aDVanCE proDUCt inforMation - MaY 05, 2011
ELMOS Semiconductor AG
b
b
b
b
[10:17,20:27,30:37]
Command in hexa-
bit order [10:17] or
decimal notation
0x75 0xAE 0x02
0x85 0x80 0x80
SO
has been detected. Output DRB is activated to indicate that diagnostic data
0x8C
0x01
0x20
xxx
1)
HYS
Data Sheet
, the outputs are ready to be turned on again by an SPI com-
26/34
Command in hexa-
[17:10,27:20,37:30]
bit order [17:10] or
decimal notation
0xAE 0x75 0x40
0xA1 0x01 0x01
0x04 0x20 0x1A
0x31
0x80
0x04
Command in binary nota-
tion bit order [17:10] or
[17:10,27:20,37:30]
1010 1110 0111 0101 0100 0000
1010 0001 0000 0001 0000 0001
0011 0001
1000 0000
0000 0100
0000 0100 0010 0000 0001 1010
QM-No.: 25DS0057E.00
E910.72