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Toshiba Electronic Components Datasheet

TB67H452FTG Datasheet

4 ch H-bridge Motor Driver

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TOSHIBA CD Process Integrated Circuit Silicon Monolithic
TB67H452FTG
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
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: Ron = 0.6 Ω
In Large mode, H-bridges can be combined. ON-resistance (Ron) = 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
1
2017-05-09


Toshiba Electronic Components Datasheet

TB67H452FTG Datasheet

4 ch H-bridge Motor Driver

No Preview Available !

Block Diagram (Brushed DC motor (S) × 4-ch mode)
TB67H452FTG
Xch IN1/IN2
Xch PWM
(MODE0)
(MODE1)
(MODE2)
tBLANK set pin
ALERT
Xch Vref input
Step Decoder
(Input Logic)
Current Level Set
(Torque Control)
(2 bit D/A)
VM
RS_X
RS_X
Current Feedback (×2)
(VRS1)
RS COMP1
(VRS2)
RS COMP2
VMR Detect
VCC Voltage
Regulator
Chopper OSC
OSC
CR-CLK
Converter
Output Control
(Mixed Decay Control)
SLEEP
VCC
OSCM
Output
(H-Bridge ×2)
Output
(H-Bridge ×2)
VM
ISD TSD
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
2 2017-05-09


Part Number TB67H452FTG
Description 4 ch H-bridge Motor Driver
Maker Toshiba
Total Page 30 Pages
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