sla6860m Allegro MicroSystems, Inc., sla6860m Datasheet - Page 3

• Manufacturer Part Number: sla6860m
• Description: High Voltage Sla6860m And Sma6860m Series Driver Ics For 3-phase Dc Motor Applications
• Manufacturer: Allegro MicroSystems, Inc.

Terminal Descriptions
A summary description of the function of the various terminals is
given in the Terminal List table. Pin 1 for each package appears
in figure 3. This section provides detailed functional descriptions
of the individual pins.
VBB This is the terminal for the main power supply. For supply-
ing the SMA6861M, V
other products, 400 VDC or lower. To suppress surge voltage, a
snubber capacitor (0. 01 to 0.1 μF) and an electrolytic capacitor
should be connected to the device by traces having the shortest
length practicable. If the trace lengths are long, surge voltages
will be increased. It should be verified that surge voltage does not
exceed the breakdown voltage of the MOSFETs internal to the
device itself.
U, V, W1, and W2 These are the output terminals connected to
the motor. W1 and W2 should be connected together externally,
and are used in short circuit events.
Terminal List Table
Number
10
12
13
14
15
16
17
18
19
20
21
22
23
24
11
1
2
3
4
5
6
7
8
9
BB
should be 200 VDC or lower and in
COM1
COM2
Name
VCC1
VCC2
HIN3
HIN2
HIN1
LIN3
LIN2
LIN1
VB1
VB2
VB3
SD1
VBB
OCL
SD2
LS2
LS1
W1
W2
RC
U
V
High side bootstrap terminal (U phase)
High side bootstrap terminal (V phase)
High side bootstrap terminal (W phase)
High side logic supply voltage
High side shutdown input and UVLO fault signal output
High side logic GND terminal
High side input terminal (W phase)
High side input terminal (V phase)
High side input terminal (U phase)
Main supply voltage
Output of W phase (connect to W2 externally)
Output of V phase
Output of W phase (connect to W1 externally)
Low side emitter terminal (connect to LS1 externally)
Overcurrent protection hold time adjustment input terminal
Low side emitter terminal (connect to LS2 externally)
Output for overcurrent limiting
Low side input terminal (W phase)
Low side input terminal (V phase)
Low side input terminal (U phase)
Low side GND terminal
Low side shutdown input and overtemperature, overcurrent, and UVLO fault signals output
Low side logic supply voltage
Output of U phase
Worcester, Massachusetts 01615-0036 U.S.A.
1.508.853.5000; www.allegromicro.com
Allegro MicroSystems, Inc.
115 Northeast Cutoff
LS1 and LS2 These are the source terminals for the low-side
power MOSFETs. LS1 and LS2 should be connected together
externally. When a shunt resistor is connected to this terminal, the
lengths of the traces should be as short as practicable. If the trace
lengths are long, malfunctions due to noise are likely to occur.
VCC1 and VCC2 These are the power supply terminals of the
built-in pre-driver ICs. VCC1 and VCC2 should be should be
connected together externally. In order to prevent malfunctions
due to noise on the power supply lines, a ceramic bypass capaci-
tor (0.01 to 0.1 μF) should be mounted near the terminals.
Note: If V
recommended to add a Zener diode (V
against such surge voltages.
The control power supply undervoltage protection circuit is inte-
grated with VCC1 and VCC2. The supplied voltage should not be
allowed to drop below the rated threshold voltage of VCC1 and
VCC2.
Function
CCx
exceeds 20 V, permanent damage may occur. It is
Z
= 18 to 20 V) to protect
3