SX68000M Series
High Voltage 3-Phase Motor Drivers
Features and Benefits
▪
Built-in bootstrap diodes with limit resistors
▪
Built-in protection circuit for controlling power supply
voltage drop (UVLO)
▪
Built-in Thermal Shutdown (TSD)
▪
Built-in Current Limiter (OCL)
▪
7.5 V regulated output
Description
The SX68000M series provides the solution for controlling
3-phase full bridges that utilize MOSFETs rated at 250 V/2 A,
500 V/1.5 A, or 500 V/2.5 A.
The IC includes in a single package: protection functions such as
UVLO (protection circuit for controlling power supply voltage
drop), OCP (overcurrent protection), TSD (thermal shutdown),
¯
and OCL (current limiting), and a pre-driver with ¯ ¯ (Fault
FO
Output) terminal and bootstrap diodes with limit resistors.
The SX68000M series is packaged in a fully-molded SOP with
27 pins at 1.2 mm pitch. Body size: 22 × 14.1 × 2.1 mm.
Package: 27-pin SOP
Applications
▪
Small motor control:
▫
Air conditioning fan
▫
White goods cooling fans
▫
Ventilation blowers
Not to scale
Functional Block Diagram
VB1
VCC1
VBB1
VBB2
UVLO
HIN1
HIN2
HIN3
COM1
SD
VCC2
REG
LIN1
LIN2
LIN3
COM2
FO
OCL
UVLO
Input Logic
(OCP reset)
Thermal
Shutdown
OCP
OCPand OCL
LS
Low-Side
Driver
UVLO
UVLO
UVLO
VB2
VB31 VB32
Input
Logic
High-Side
Level Shift Driver
W1
W2
V
V1
V2
U
REG
28400.00
SX68000M
Series
Selection Guide (Values at T
A
= 25°C)
Rating
Part Number
(V)
250
500
500
(A)
2
1.5
2.5
MOSFET V
DSS
(V)
250
500
500
I
O
(A)
2
1.5
2.5
High Voltage 3-Phase Motor Drivers
Thermal Resistance
I
OP
(A)
3
2.25
3.75
3
15
41.7
P
D
(W)
Junction to
Case, R
θJC
(°C/W)
Junction to
Ambient, R
θJA
(°C/W)
SX68001M
SX68002M
SX68003M
Absolute Maximum Ratings
, valid at T
A
= 25°C
Characteristic
MOSFET Breakdown Voltage
Logic Supply Voltage
Bootstrap Voltage
Output Current (Continuous)
Symbol
SX68001M
V
DSS
V
CC
V
BS
I
O
SX68002M
SX68003M
VCC to COM
VB to high side (U,V,W)
SX68001M
SX68002M
SX68003M
SX68001M
Output Current (Pulsed)
Output Current for Regulator
Input Voltage
Maximum Allowable Power Dissipation*
Thermal Resistance (Junction to Case)
Thermal Resistance (Junction to Ambient)*
Case Operating Temperature
Junction Temperature (MOSFET)
Storage Temperature
I
OP
I
REG
V
IN
P
D
R
θj-c
R
θj-a
T
OP
T
J
T
stg
¯
LINx, HINx, ¯ ¯¯ , SD, LS pins
FO
T
A
= 25°C
All circuits operating
All circuits operating
SX68002M
SX68003M
t
W
≤
100
μs,
1% duty cycle
T
C
= 25°C
I
D
= 100
μA
Notes
Rating
250
500
500
20
20
2
1.5
2.5
3
2.25
3.75
35
–0.5 to 7
3
15
41.7
–20 to 100
150
–40 to 150
Unit
V
V
V
V
V
A
A
A
A
A
A
mA
V
W
°C/W
°C/W
°C
°C
°C
*Mounted on 1.6 mm thick CEM-3 PCB, with 35
μm
thick copper layer, without overmolding, in still air.
Recommended Operating Conditions
Characteristic
Main Supply Voltage
Logic Supply Voltage
Dead Time
Bootstrap Capacitor
¯
Pull-up Resistor (¯ ¯¯ pin)
FO
¯
Capacitor (¯ ¯¯ pin)
FO
Shunt Resistor (LS pin)
Junction Temperature (MOSFET)
Symbol
SX68001M
V
BB
V
CC
t
DEAD
C
BOOT
R
FO
C
FO
SX68001M
R
S
T
J
Allegro MicroSystems, Inc.
115 Northeast Cutoff
Worcester, Massachusetts 01615-0036 U.S.A.
1.508.853.5000; www.allegromicro.com
Conditions
SX68002M
SX68003M
VCC to COM
VBB to LS
Min.
–
–
–
13.5
1.5
1
3.3
0.001
0.37
Typ.
140
280
280
–
–
–
–
–
–
–
–
–
Max.
200
400
400
16.5
–
–
10
0.01
–
–
–
125
Unit
V
V
V
V
μs
μF
kΩ
μF
Ω
Ω
Ω
°C
SX68002M
SX68003M
V
LS
≤
1 V
0.49
0.30
–
2
SX68000M
Series
High Voltage 3-Phase Motor Drivers
Pin-out Diagram
27
W1
U
VBB2
VBB1
VB1
VB32
VB31
W2
FO
LS
V1
V2
COM2
VCC2
COM1
VCC1
HIN3
HIN2
HIN1
1
Terminal List Table
Number
1
2
3
4
5
6
7
8
9
10
11
12
13
Name
VB2
V
VCC1
COM1
HIN3
HIN2
HIN1
SD
OCL
LIN3
LIN2
LIN1
REG
Output of V-phase
High-side logic supply voltage
High-side logic GND terminal
High-side input terminal (W-phase)
High-side input terminal (V-phase)
High-side input terminal (U-phase)
High-side shut down input
Current limiter signal output (CMOS output)
Low-side input terminal (W phase)
Low-side input terminal (V phase)
Low-side input terminal (U phase)
7.5 V regulator output
Function
High-side bootstrap terminal (V phase)
Number
14
15
16
17
18
19
20
21
22
23
24
25
26
27
Name
COM2
VCC2
¯ ¯¯
¯
FO
LS
W2
V2
U
VB1
VBB1
V1
W1
VB31
VBB2
VB32
Function
Low-side GND terminal
Low-side logic supply voltage
Fault signal output (open collector output)
Low-side MOSFET source terminal
Output of W phase (connect to W1)
Output of V phase (connect to V1)
Output of U phase
High-side bootstrap terminal (U phase)
Main supply voltage 1 (connect VBB2 externally)
Output of V phase (connect to V2)
Output of W phase (connect to W2)
High side bootstrap terminal (W phase)
Main supply voltage 2 (connect VBB1 externally)
High side bootstrap terminal (W phase)
All performance characteristics given are typical values
for circuit or system baseline design only and are at the
nominal operating voltage and an ambient temperature, T
A
,
of 25°C, unless otherwise stated.
Allegro MicroSystems, Inc.
115 Northeast Cutoff
Worcester, Massachusetts 01615-0036 U.S.A.
1.508.853.5000; www.allegromicro.com
REG
LIN3
LIN2
LIN1
OCL
VB2
SD
V
3
SX68000M
Series
High Voltage 3-Phase Motor Drivers
Typical Application Circuit
Using current limiter function
15V
VCC1
VB1
VB2
VB31
VB32
VBB1
VBB2
C2
HIN1
HIN2
HIN3
COM1
SD
Controller
IC
C3
VCC2
REG
LIN1
LIN2
LIN3
COM2
C1
FO
OCL
UVLO
UVLO
UVLO
UVLO
CBOOTU
CBOOTV
CBOOTW
W1
W2
V
V1
V2
U
Input
Logic
High Side
Level Shift Driver
BLDC
Motor
REG
UVLO
Input Logic
(OCP reset)
Thermal
Shutdown
Low Side
Driver
OCP
OCP and OCL
5V
RFO
LS
RS
To avoid malfunctions or permanent damage to the IC, observe the following guidelines for layout of the PCB:
• W1 and W2, as well as V1 and V2 must be externally connected to each other.
• If not using the Current Limiter (OCL) function, leave the OCL and SD pins open, but the SD pin should be connected to
GND if significant external noise is observed.
• Place a pull-up resistor, RFO, between the 5 V or 3.3 V supply and the IC, selected according to anti-noise characteristics,
¯
even though a 1 MΩ pull-up resistor is built-in at ¯ ¯¯ pin. Note that connecting to the 5 V or 3.3 V supply without a pull-up
FO
resistor disables the TSD function (however, low-side UVLO protection and OCP function remain active).
¯
• To avoid malfunctions resulting from noise interference, place a 0.01 to 0.1
μF
ceramic capacitor (C1) between the ¯ ¯¯
FO
and COM2 pins.
• To avoid malfunctions resulting from noise interference, the traces must be as short as possible between the IC and the
bootstrap capacitors, CBOOTx (≈1
μF).
• One of the bootstrap capacitors for the W phase can be populated between pin 24 (W1) and pin 25 (VB31). Also, because
pin 27 (VB32) and pin 25 are internally connected, pin 27 can be left open.
• To avoid malfunctions resulting from noise interference, place a 0.01 to 0.1
μF
ceramic capacitor between the VCC1 and
COM1 (C2), as well as the VCC2 and COM2 (C3) pins. Also, the traces between them must be as short as possible.
• To avoid malfunctions resulting from noise interference, the traces between the current sense resistor RS, which is placed
between the LS and COM2 pins, and the IC must be as short and wide as possible.
• If the generated voltage on the LS pin exceeds 7 V, add a Zener diode between the LS and COM2 pins.
Allegro MicroSystems, Inc.
115 Northeast Cutoff
Worcester, Massachusetts 01615-0036 U.S.A.
1.508.853.5000; www.allegromicro.com
4
SX68000M
Series
Characteristics
Logic Supply Current
Bootstrap Supply Current
Input Voltage
¯ ¯¯ Input Threshold Voltage
¯
FO
Input Current
High-Side Undervoltage Lock Out
Low-Side Under Voltage Lock Out
¯ ¯¯ Terminal Output Voltage
¯
FO
Overcurrent Limit Output Voltage
Current Limit Reference Voltage
Overcurrent Protection Trip Voltage
Overcurrent Protection Hold Time
Overcurrent Protection Blanking Time
Overcurrent Limit Blanking Time
SD Terminal Blanking Time
Overtemperature Protection Activating
and Releasing Temperature
Output Voltage for Regulator
Bootstrap Diode Leakage Current
Bootstrap Diode Forward Voltage
Bootstrap Diode Series Resistor
MOSFET Leakage Current
Symbol
I
CC
I
B
V
IH
V
IL
V
FOIH
V
FOIL
I
IH
I
IL
V
UVHL
V
UVHH
V
UVLL
V
UVLH
V
FOL
V
FOH
V
OCLL
V
OCLH
V
LIM
V
TRIP
t
P
t
bk(ocp)
t
bk(ocl)
t
bk(SD)
T
DH
T
DL
V
REG
I
LBD
V
FBD
R
BD
SX68001M
I
DSS
SX68002M
SX68003M
SX68001M
MOSFET On State Resistance
R
DS(on)
SX68002M
SX68003M
SX68001M
Diode Forward Voltage (MOSFET)
V
SD
SX68002M
SX68003M
High Voltage 3-Phase Motor Drivers
Test Conditions
V
CC
= 15 V, I
REG
= 0 A
VB = 15 V, HIN = 5 V per phase
V
CC
= 15 V, Output on
V
CC
= 15 V, Output off
V
CC
= 15 V, Output on
V
CC
= 15 V, Output off
V
CC
= 15 V, V
IN
= 5 V
V
IN
= 0 V
Between VB and U, V, or W
Between VCC and COM
V
CC
= 15 V,V
FO
= 5 V, R
FO
= 10 kΩ
V
CC
= 15 V
V
CC
= 15 V
V
CC
= 15 V
V
CC
= 15 V
V
CC
= 15 V
V
CC
= 15 V
V
CC
= 15 V
V
CC
= 15 V, no heatsink and I
REG
= 0 mA
I
REG
= 35 mA
SX68001M
SX68002M
SX68003M
I
F
= 0.15 A
V
DS
= 250 V
V
DS
= 500 V
V
DS
= 500 V
V
CC
= 15 V, I
D
= 1 A, V
IN
= 5 V
V
CC
= 15 V, I
D
= 0.75 A, V
IN
= 5 V
V
CC
= 15 V, I
D
= 1.25 A, V
IN
= 5 V
V
CC
= 15 V, I
SD
= 1 A, V
IN
= 0 V
V
CC
= 15 V, I
SD
= 0.75 A, V
IN
= 0 V
V
CC
= 15 V, I
SD
= 1.25 A, V
IN
= 0 V
V
R
= 250 V
V
R
= 500 V
V
R
= 500 V
Min.
–
–
–
1
–
1
–
–
9.0
9.5
10.0
10.5
0
4.8
0
4.5
0.6175
0.9
20
–
–
–
135
105
6.75
–
–
–
–
48
–
–
–
–
–
–
–
–
–
Typ.
4.6
140
2
1.5
2
1.5
230
–
10.0
10.5
11.0
11.5
–
–
–
–
0.65
1.0
25
2
2
3.3
150
120
7.5
–
–
–
1.0
60
–
–
–
1.25
3.2
2.0
1.1
1.0
1.0
Max.
8.5
400
2.5
–
2.5
–
500
2
11.0
11.5
12.0
12.5
0.5
–
0.5
5.5
0.6825
1.1
–
–
–
–
165
135
8.25
10
10
10
1.3
72
100
100
100
1.5
4.0
2.4
1.5
1.5
1.5
Unit
mA
μA
V
V
V
V
μA
μA
V
V
V
V
V
V
V
V
V
V
μs
μs
μs
μs
°C
°C
V
μA
μA
μA
V
Ω
μA
μA
μA
Ω
Ω
Ω
V
V
V
SX6800xM ELECTRICAL CHARACTERISTICS
Valid T
A
= 25°C; unless otherwise noted
Allegro MicroSystems, Inc.
115 Northeast Cutoff
Worcester, Massachusetts 01615-0036 U.S.A.
1.508.853.5000; www.allegromicro.com
5
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