TB67H302HG
TOSHIBA BiCD Integrated Circuit
Silicon Monolithic
TB67H302HG
Dual Bridge Driver IC for DC motor
TB67H302HG
The TB67H302HG is a dual bridge driver IC for DC motor
adopting DMOS in output transistor.
High-power and high-efficient drive is possible by adopting
DMOS output driver with low-ON resistance and PWM drive.
Features
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Dual bridge driver IC for DC motor
Ron (upper
+
lower) = 0.4Ω (typ.)
CW/CCW/Short brake/Stop functions
Standby function
PWM control (Direct PWM or Constant-current PWM drive)
Output withstand voltage : Vcc = 50 V
Output current
Package
: I
OUT
= 5.0 A (Absolute maximum ratings, peak)
: HZIP25-P-1.00F
I
OUT
= 4.5 A (Operating range, maximum value)
: 100 kΩ (typ.)
: ALERT1 pin (I
ALERT1
(max) = 1 mA)
: ALERT2 pin (I
ALERT2
(max) = 1 mA)
HZIP25-P-1.00F
Weight
HZIP25-P-1.00F: 7.7g (typ.)
Built-in input pull-down resistance
Output monitor pin (monitor for TSD/ISD)
Output monitor pin (monitor for UVLO)
Single power supply
Built-in thermal shutdown (TSD) circuit
Built-in under voltage lock out (UVLO) circuit
Built-in over-current detection (ISD) circuit
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2016-06-10
TB67H302HG
Pin Functions
Pin No.
I/O
Symbol
Functional Description
TSD / ISD monitor pin
Signal ground
Remark
Pull-up by external resistance
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
Output
―
Input
Input
Input
Input
Input
Input
Input
Output
―
Output
―
Output
―
Output
―
Input
Input
Input
Input
Input
―
Output
Output
ALERT1
SGND
SELECT
VrefA
VrefB
Vcc
STBY
IN1B
IN2B
OUT2B
RSB
OUT1B
PGNDB
OUT2A
RSA
OUT1A
PGNDA
IN1A
IN2A
Vcc
PWMA
PWMB
OSC
Vreg
ALERT2
Select pin for constant-current PWM or
direct PWM
Voltage input for 100% current level for Ach
Voltage input for 100% current level for Bch
Power supply
Standby pin
Control input pin 1 for Bch
Control input pin 2 for Bch
Bch output 2
H; Start, L; Standby
Bch output current detection
Bch output 1
Power GND
Ach output 2
Ach output current detection
Ach output 1
Power GND
Control input pin 1 for Ach
Control input pin 2 for Ach
Power supply
PWM signal input pin for Ach
PWM signal input pin for Bch
Resistor connection pin for internal
oscillation setting
Control side connection pin for power
capacitor
Connecting capacitor to SGND
Pull-up by external resistance
UVLO
monitor pin
<Terminal circuits>
Input pins
(IN1A, IN2A, PWMA, IN1B, IN2B,
PWMB, STBY, SELECT)
V
DD
100
Ω
100kΩ
2
2016-06-10
TB67H302HG
Block Diagram
Vreg
24
SELECT
STBY
IN1A
IN2A
PWMA
IN1B
IN2B
PWMB
3
ALERT1 ALERT2
1
25
Vcc
6, 20
Reg (5V)
16
Pre
-drive
H-Bridge
driver A
14
OUT1A
7
18
19
21
8
9
Input
circuit
OUT2A
TSD / ISD / UVLO
15
RSA
12
Pre
-drive
H-Bridge
driver B
10
OUT1B
22
OSC
VrefA
VrefB
23
4
5
OSC
1/3
1/3
2
SGND
17
PGNDA
13
PGNDB
11
OUT2B
RSB
3
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TB67H302HG
Functions
I/O functions
SELECT = L (Direct PWM mode)
Input
SB
H
IN1
H
IN2
H
PWM
H
L
H
L
H
L
H
L
H
L
OUT1
L
L
L
H
L
OFF
(Hi-Z)
OFF
(Hi-Z)
OUT2
L
H
L
L
L
Output
Mode
Short brake
CW/CCW
Short brake
CCW/CW
Short brake
Stop
H
L
H
H
H
L
H
L
L
L
H/L
H/L
Standby
SELECT = H (Constant-current PWM mode)
Input
SB
H
IN1
H
IN2
H
PWM
H
L
H
L
H
L
H
L
H
L
OUT1
L
L
L
H
L
OFF
(Hi-Z)
OFF
(Hi-Z)
OUT2
L
H
L
L
L
Output
Mode
Short brake
Constant-current PWM, CW (OUT2→OUT1)
Short brake
Constant-current PWM, CCW (OUT1→OUT2)
Short brake
Stop
H
L
H
H
H
L
H
L
L
L
H/L
H/L
Standby
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2016-06-10
TB67H302HG
Selection of direct PWM and constant-current PWM
SELECT = L: operating direct PWM, SELECT
=
H: operating constant-current PWM
(1) In case of direct PWM:
・RSA
should be connected to PGNDA.
・RSB
should be connected to PGNDB.
・Vref
A and Vref B should be connected to SGND.
(2) In case of constant-current PWM:
・RSA
and RSB should be connected to current detection resistance (RNFA and RNFB) each.
・Configuration
of output current is as follows;
Ach
Io = (1/3 × VrefA) ÷ RNFA
Bch
Io = (1/3 × VrefB) ÷ RNFB
This system adopts peak current detection. Average current is lower than setting current.
Set RNFA, RNFB, VrefA and VrefB as follows;
0.11Ω ≤ RNFA ≤ 0.5Ω, 0.11Ω ≤ RNFB ≤ 0.5Ω, 0.3V ≤ VrefA ≤ 1.95V and 0.3V ≤ VrefB ≤ 1.95V
Triangle wave is generated internally by CR oscillation by connecting external resistor to OSC terminal.
Rosc should be from 30kΩ to 120kΩ. The relation of Rosc and fchop is shown in below table and figure. The
values of fchop of the below table are design guarantee values. They are not tested for pre-shipment.
Rosc(kΩ)
Min
30
51
120
-
-
-
fchop(kHz)
Typ.
60
40
20
Max
-
-
-
5
2016-06-10
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