TB67H400AFTG
TOSHIBA BiCD Integrated Circuit Silicon Monolithic
TB67H400AFTG
PWM Chopper-Type
Brushed DC Motor driver
The TB67H400AFTG is brushed DC motor driver of a PWM chopper-type.
The TB67H400AFTG is a dual channel H-SW driver which can control two
brushed DC motors. Moreover, the parallel control function (Large mode) of an
output part is built in, and 1ch high current drive is also possible. Fabricated
with the BiCD process, the TB67H400AFTG is rated at 50 V, 4.0 A (2ch)/8.0 A
(1ch).
P-WQFN48-0707-0.50-003
Weight: 0.10 g (typ.)
Features
Monolithic motor driver using BiCD process.
Capable of controlling two brushed DC motor.
2 drive modes (PWM controlled constant current/ direct PWM)
4 operation modes (Clock-wise/Counter clock-wise/Brake/Stop (Off))
Low on-resistance output stage (High side+Low side:0.49
Ω
(typ.))
High voltage and current (for specification, please refer to absolute
maximum ratings and operating ranges.)
Built-in error detection circuits (Thermal shutdown (TSD), over-current
detection (ISD), and power-on reset (POR)).
The VCC regulator for internal circuit operation is built in.
Able to customize PWM (internal chopping) frequency by external
components.
Note: Please be careful about the thermal conditions during use.
©2016 TOSHIBA CORPORATION
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2016-12-22
TB67H400AFTG
Pin assignment
OUTB+
OUTB+
OUTA+
VCC
RSB
RSB
VM
NC
NC
NC
NC
36 35 34 33 32 31 30 29 28 27 26 25
NC
NC
NC
GND
VREF
HBMODE
OSCM
INA1
INA2
PWMA
PWMB
NC
37
38
39
40
41
42
43
44
45
46
47
48
1
NC
2
INB1
3
INB2
4
TBLKAB
5
GND
6
NC
7
RSA
8
RSA
9 10 11 12
OUTA+
NC
NC
24 NC
23 NC
22 GND
21 OUTB-
20 OUTB-
NC
TB67H400AFTG
(Top View)
NC
19 GND
18 GND
17 OUTA-
16 OUTA-
15 GND
14 NC
13 NC
Note: Please connect the WQFN package corner pad and the exposed pad to the PCB ground pattern.
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2016-12-22
TB67H400AFTG
Block diagram
INA1
INA2
INB1
INB2
PWMA
PWMB
TBLKAB
HBMODE
Standby
Control
+
Blank time
Selector
+
H-Bridge
Mode select
+
Signal Decode
Logic
OSC-Clock
Converter
System
Oscillator
Power-on
Reset
Motor
Oscillator
VCC
Regulator
OSCM
VCC
VM
Current
Level
Set
Current
Reference
Setting
VREF
Current
Comp
Predriver
RSA
Motor Control Logic
Current
Comp
Predriver
RSB
TSD
ISD
H-bridge
H-bridge
GND
Please note that in the block diagram, functional blocks or constants may be omitted or simplified for explanatory
purposes.
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TB67H400AFTG
Notes:
All the grounding wires of the TB67H400AFTG must run on the solder mask of the PCB. It must also be externally
terminated at a single point. Also, the grounding method should be considered for efficient heat dissipation.
Careful attention should be paid to the layout of the output, VM and GND traces, to avoid short circuits across output
pins or to the power supply or ground. If such a short circuit occurs, the device may be permanently damaged.
Also, the utmost care should be taken for pattern designing and implementation of the device since it has power
supply pins (VM, RS, OUT, and GND) through which a particularly large current may run. If these pins are wired
incorrectly, an operation error may occur or the device may be destroyed.
The logic input pins must also be wired correctly. Otherwise, the device may be damaged owing to a current running
through the IC that is larger than the specified current. Careful attention should be paid to design patterns and
mountings.
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2016-12-22
TB67H400AFTG
Pin description
TB67H400AFTG (WQFN48)
Pin No.1-28
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
Pin name
NC
INB1
INB2
TBLKAB
GND
NC
RSA(*)
RSA(*)
NC
OUTA+(*)
OUTA+(*)
NC
NC
NC
GND
OUTA-(*)
OUTA-(*)
GND
GND
OUTB-(*)
OUTB-(*)
GND
NC
NC
NC
OUTB+(*)
OUTB+(*)
NC
Non connection
Motor Bch IN1 signal input pin
Motor Bch IN2 signal input pin
Motor Ach and Bch Digital tBLK setting pin
Ground pin
Non connection
Motor Ach output current sense pin
Motor Ach output current sense pin
Non connection
Motor Ach+ output pin
Motor Ach+ output pin
Non connection
Non connection
Non connection
Ground pin
Motor Ach- output pin
Motor Ach- output pin
Ground pin
Ground pin
Motor Bch- output pin
Motor Bch- output pin
Ground pin
Non connection
Non connection
Non connection
Motor Bch+ output pin
Motor Bch+ output pin
Non connection
Function
Please do not connect any pattern to the NC pin.
* Please connect the pins with the same names, at the nearest point of the device.
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2016-12-22
RF/Wirelessly
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