TB6642FG/FTG
TOSHIBA Bi-CMOS Integrated Circuit Silicon Monolithic
TB6642FG/FTG
Full-Bridge DC Motor Driver IC
The TB6642FG/FTG is a full-bridge DC motor driver with MOS
output transistors.
The low ON-resistance MOS process and PWM control enables
driving DC motors with high thermal efficiency.
Four operating modes are selectable via IN1 and IN2: clockwise
(CW), counterclockwise (CCW), Short Brake and Stop.
Features
•
•
•
•
•
•
•
•
•
•
•
•
Power supply voltage
Output current
Direct PWM control
CW/CCW/Short Brake/Stop modes
Overcurrent shutdown circuit (ISD)
Overcurrent detection threshold control
Overcurrent detection time control
Overvoltage shutdown circuit (VSD)
Thermal shutdown circuit (TSD)
Undervoltage lockout circuit (UVLO)
Dead time for preventing shoot-through current
Selectable release of TSD,ISD
P-VQFN32-0505-0.50-002
TB6642FTG:Weight: 0.07 g (typ.)
: 50 V (max)
: 4.5 A (max)
TB6642FG:Weight: 0.5 g (typ.)
1
2014-12-8
TB6642FG/FTG
Block Diagram
(application circuit example)
The application circuits shown in this document are provided for reference purposes only. Thorough evaluation is
required, especially at the mass production design stage.
Toshiba does not grant any license to any industrial property rights by providing these examples of application
circuits.
VM
5 V regulator
UVLO
ALERT
VSD
TSD
ISD detection
ISD detection
OUT1
IN1
Control
IN2
Predriver
OUT2
ISD detection
ISD
ISD detection
Motor
PWM
OSC
Level
Time
SGND
OSC
VISD
TISD
RSGND
2
2014-12-8
TB6642FG/FTG
Pin Functions:TB6642FG
Pin No.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
―
Pin Name
ALERT
OSC
IN1
SGND
IN2
N.C.
OUT1
RSGND
N.C.
OUT2
N.C.
VM
VISD
TISD
PWM
N.C.
FIN
Functional Description
Error detection output pin
Capacitor pin for controlling release of ISD,TSD
Control signal input pin 1
Small signal ground pin
Control signal input pin 2
No-connect
Output pin 1
Power ground pin/
Detection resistor pin for PWM constant-current control
No-connect
Output pin 2
No-connect
Power supply voltage pin
Resistor pin for overcurrent detection threshold control
Resistor pin for overcurrent detection time control
PWM input pin
No-connect
Pin-fin heat sink (Note 1)
Note 1: Since the pin-fin is provided for discharging heat, the thermal design must be considered on the PCB
designing. (The fin is installed on the second surface of the chip and electrified; therefore it must be insulated or
earthed to the ground.)
Note 2: ESD test is not conducted on N.C.pins.
Pin Assignment
(top view):TB6642FG
16
N.C.
15
PWM
14
TISD
13
VISD
FIN
12
VM
11
N.C.
10
OUT2
9
N.C.
ALERT
1
OSC
2
IN1
3
SGND
4
FIN
IN2
5
N.C.
6
OUT1
7
RSGND
8
3
2014-12-8
TB6642FG/FTG
Pin Functions:TB6642FTG
Pin No.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
Pin Name
OUT1
OUT1
N.C.
RSGND
RSGND
N.C.
OUT2
OUT2
N.C.
N.C.
VM
VM
N.C.
N.C.
VISD
N.C.
TISD
PWM
N.C.
N.C.
N.C.
ALERT
OSC
IN1
N.C.
SGND
SGND
N.C.
N.C.
N.C.
IN2
N.C.
Output pin 1
Output pin 1
No-connect
Power ground pin/
Detection resistor pin for PWM constant-current control
Power ground pin/
Detection resistor pin for PWM constant-current control
No-connect
Output pin 2
Output pin 2
No-connect
No-connect
Power supply voltage pin
Power supply voltage pin
No-connect
No-connect
Resistor pin for overcurrent detection threshold control
No-connect
Resistor pin for overcurrent detection time control
PWM input pin
No-connect
No-connect
No-connect
Error detection output pin
Capacitor pin for controlling oscillation frequency for the PWM
constant-current control
Control signal input pin 1
No-connect
Small signal ground pin
Small signal ground pin
No-connect
No-connect
No-connect
Control signal input pin 2
No-connect
Functional Description
Note 1: Design the pattern in consideration of the heat design because the back side has the role of heat radiation.
(The back side should be connected to GND because it is connected to the back of the chip electrically.)
Note 2: Though each OUT1, RSGND, OUT2, VM, and SGND has two pins, short out these two pins at the external IC
respectively.
Note 3: ESD test is not conducted on N.C.pins.
4
2014-12-8
TB6642FG/FTG
Pin Assignment
(top view):TB6642FTG
ALERT
PWM
TISD
OSC
23
24
NC
SGND
SGND
NC
NC
NC
IN2
NC
25
26
27
28
29
30
31
32
IN1
OUT1
NC
NC
NC
21
22
20
19
18
17
16
15
14
13
12
11
10
9
NC
VISD
NC
NC
VM
VM
NC
NC
2
OUT1
3
4
RSGND
5
RSGND
6
NC
7
OUT2
8
OUT2
NC
5
2014-12-8
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