TB67H452FTG
TOSHIBA CD Process Integrated Circuit Silicon Monolithic
TB67H452FTG
PWM Chopper Type 4 ch H-bridge Motor Driver
The TB67H452FTG is a PWM chopper type 4 ch
H-bridge motor driver
.
The TB67H452FTG can drive two steppers, two DC
brushed motors and one stepping motor, etc. by
combining 4 ch H-bridges. And it can also drive dual
DC brushed motors or stepping motors for
large-current drive by setting Large mode. Moreover,
VM power supply voltage can be used 6.3 V or more.
Therefore, it is optimal for battery powered
applications with 7.2 V power supply for example.
QFN48-P-0707-0.50
Weight: 0.137 g (typ.)
Features
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Single-chip brushed DC motor driver for up to 4 motors
Single-chip bipolar stepping motor driver for up to 2 motors
Monolithic IC structured by CD process
Low ON-resistance: R
on
= 0.6
Ω
In Large mode, H-bridges can be combined. ON-resistance (R
on
) = 0.3
Ω.
Over-current detection (ISD), thermal shutdown (TSD), and VM power-on reset circuits
Since the IC incorporates a VCC regulator for internal circuit operation, an external logic
power supply (5 V) is not required
Package: QFN48
Maximum output withstand voltage: 40 V (max)
Output current: 3.5 A (peak) in DC Motor (S) mode
Chopping frequency can be set by external capacitor and resistor
High-speed chopping is possible at 100 kHz or more
©2017 TOSHIBA Corporation
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TB67H452FTG
Block Diagram (Brushed DC motor (S) × 4-ch mode)
Xch IN1/IN2
Xch PWM
Step Decoder
SLEEP
VMR Detect
VCC Voltage
Regulator
VCC
(MODE0)
(MODE1)
(MODE2)
tBLANK set pin
ALERT
Xch Vref input
(Input Logic)
Chopper OSC
OSCM
OSC
Current Level Set
(Torque
Control)
(2
bit D/A)
CR-CLK
Converter
Current Feedback (×2)
VM
(V
RS
1
)
R
S
COMP1
RS_X
(V
RS
2)
R
S
COMP2
RS_X
Output Control
(Mixed Decay Control)
ISD
TSD
Output
(H-Bridge ×2)
Output
(H-Bridge ×2)
VM
VMR
Detect
Detection Circuit
Note: Though pin functions are different depending on the used mode, they are indicated
according to the DC(S) ×4 mode in this document.
Note: "X" means the ellipsis of A, B, C, or D of each Ch. (Xch IN1/IN2, Xch PWM, Xch Vref
input, and RS_X)
Note: Number of RS pins is 8 in total.
Note: GND wiring: All the grounding wires of the TB67H452FTG should run on the solder
mask on the PCB and be externally terminated at only one point. Also, a grounding
method should be considered for efficient heat dissipation.
In controlling the setting pins for each mode by SW, those pins should be pulled up to
power supply like VCC or pulled down to GND not to go into a high-impedance (Hi-Z)
state.
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, GND, etc.) through which a
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TB67H452FTG
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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TB67H452FTG
Pin Assignment
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
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
Pin name
MO_CD
CD_MODE2
OUT_C-
RS_C
RS_C
OUT_C+
OUT_D+
RS_D
RS_D
OUT_D-
CD_MODE1
VREF_A
VREF_B
VREF_C
VREF_D
OSCM
VCC
GND
VM
VM
SLEEP
ALERT
CLK_AB
ENABLE_AB
CLK_CD
ENABLE_CD
OUT_A-
RS_A
RS_A
OUT_A+
OUT_B+
RS_B
RS_B
OUT_B-
D_tBLANK_AB
NC
D_tBLANK_CD
MODE2
MODE1
MODE0
VM
VM
NC
CW_CCW_AB
MO_AB
AB_MODE2
AB_MODE1
CW_CCW_CD
(1 )
Stepper(S)×2
CDch MO pin
CDch step resolution mode setting
Cch output pin(-)
Cch sensing Rs connection pin
Cch sensing Rs connection pin
Cch output pin(+)
Dch output pin(+)
Dch sensing Rs connection pin
Dch sensing Rs connection pin
Dch output pin(-)
CDch step resolution mode setting
Ach Vref input
Bch Vref input
Cch Vref input
Dch Vref input
(2) DC(L)×2
(3) Stepper(L)
(4) DC(S)×4
(5) DC(L)+Stepper（ S）
(6) DC(S)×2
+
Stepper(S)
CDch
ＩＮ
1 Pin
-
Cch IN 1 pin
-
-
Dch IN 2 pin
CDch output pin(-)
CDch sensing Rs Connection pin
CDch sensing Rs Connection pin
CDch output pin(+)
CDch output pin(+)
CDch sensing Rs Connection pin
CDch sensing Rs Connection pin
CDch output pin(-)
-
-
Dch IN 1 pin
ABch Vref input
Ach Vref input
Bch Vref input
-
Cch Vref input
CDch Vref input
Dch Vref input
-
Setting pin of oscillation circuit frequency for chopping
Monitoring pin for internal generated 5V bias
GND
VM power input pin
VM power input pin
Sleep pin
Alert pin
ABch PWM pin
CLK input
Ach PWM pin
-
ENABLE input
Bch PWM pin
CDch PWM pin
-
Cch PWM pin
-
-
Dch PWM pin
ABch output pin(-)
Ach output pin(-)
Ach sensing Rs connection pin
ABch sensing Rs connection pin
Ach sensing Rs connection pin
ABch sensing Rs connection pin
Ach output pin(+)
ABch output pin(+)
Bch output pin(+)
ABch output pin(+)
Bch sensing Rs connection pin
ABch sensing Rs connection pin
Bch sensing Rs connection pin
ABch sensing Rs connection pin
Bch output pin(-)
ABch output pin(-)
tBLANK setting pin
-
tBLANK setting pin
NC
tBLANK setting pin
CDch Decay setting pin
tBLANK setting pin
"H" input fixed
"H" input fixed
"H" input fixed
"H" input fixed
"L" input fixed
"L" input fixed
"L" input fixed
"H" input fixed
"L" input fixed
VM power input pin
VM power input pin
NC
ABch IN2 pin
CW/CCW pin
Ach IN2 pin
ABch IN1 pin
MO pin
Ach IN1 pin
-
Mode setting
Bch IN2 pin
-
Mode setting
Bch IN1 pin
CDch IN2 pin
-
Cch IN2 pin
CDch MO pin
CDch step resolution mode setting
Cch output pin(-)
Cch sensing Rs connection pin
Cch sensing Rs connection pin
Cch output pin(+)
Dch output pin(+)
Dch sensing Rs connection pin
Dch sensing Rs connection pin
Dch output pin(-)
CDch step resolution mode setting
ABch Vref input
Ach Vref input
-
Bch Vref input
Cch Vref input
Cch Vref input
Dch Vref input
Dch Vref input
ABch CLK input
ABch ENABLE input
CDch CLK input
CDch ENABLE input
Ach output pin(-)
Ach sensing Rs connection pin
Ach sensing Rs connection pin
Ach output pin(+)
Bch output pin(+)
Bch sensing Rs connection pin
Bch sensing Rs connection pin
Bch output pin(-)
ABch Decay setting pin
CDch Decay setting pin
"H" input fixed
"H" input fixed
"H" input fixed
ABch PWM pin
Ach PWM pin
-
Bch PWM pin
CDch CLK input
CDch CLK input
CDch ENABLE input
CDch ENABLE input
ABch output pin(-)
Ach output pin(-)
ABch sensing Rs connection pin
Ach sensing Rs connection pin
ABch sensing Rs connection pin
Ach sensing Rs connection pin
ABch output pin(+)
Ach output pin(+)
ABch output pin(+)
Bch output pin(+)
ABch sensing Rs connection pin
Bch sensing Rs connection pin
ABch sensing Rs connection pin
Bch sensing Rs connection pin
ABch output pin(-)
Bch output pin(-)
tBLANK setting pin
CDch Decay setting pin
"L" input fixed
"H" input fixed
"H" input fixed
"L" input fixed
"H" input fixed
"L" input fixed
ABch CW/CCW pin
ABch MO pin
ABch step resolution mode setting
ABch step resolution mode setting
CDch CW/CCW pin
ABch IN2 pin
ABch IN1 pin
-
-
CDch CW/CCW pin
Ach IN2 pin
Ach IN1 pin
Bch IN2 pin
Bch IN1 pin
Note: In Large mode, please connect the corresponding pins to each other.
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TB67H452FTG
■Descriptions of Motor Drive Modes
(1)
(2)
(3)
(4)
(5)
(6)
Stepping Motor (S)
×
2 ch mode
DC Motor (L)
×
2 ch mode
Stepping Motor (L)
×
1 ch mode
DC Motor (S)
×
4 ch mode
Stepping Motor (S)
×
1 ch mode + DC Motor (L)
×
1 ch mode
Stepping Motor (S)
×
1 ch mode + DC Motor (S)
×
2 ch mode
Note: (L): Large mode (Large), (S): Small mode (Small).
Note: The digital tBLANK time of the modes including DC Motor (S) mode can be separately set
for each ch pair, A and B ch and C and D ch.
A and B ch: D_tBLANK_AB pin
C and D ch: D_tBLANK_CD pin
MODE (2, 1, 0) = (L, L, H) is provided only for Toshiba testing and must not be used
during normal operation.
Note: In Combination mode, such as Stepping Motor (L) and DC Motor (L) modes, the
impedance outside the IC should be balanced.
Note: In Large mode (Stepping Motor (L) or DC Motor (L)), outputs should be short circuit.
If the wiring impedance for each output transistor is different, the current that flows
through each output transistor becomes unbalanced and the current may exceed the
absolute maximum rating of the transistor. In this case, the IC may break down.
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