TB6549F/P
2002-08-30
1
Toshiba Bi-CMOS Integrated Circuit Silicon Monolithic
TB6549F,TB6549P
Full-Bridge Driver IC for DC motor
TB6549F/P is a full-bridge driver IC for DC motor which uses
LDMOS for output transistors. High efficient drive is possible by
MOS process with low ON-resistor and PWM drive system. Four
modes such as CW, CCW, short brake, and stop can be chosen by
IN1 and IN2.
Features
Power supply voltage: 30 V (max)
Output current: 3.5 A (max)
Low ON resistor: 0.5 (typ.)
Capable of PWM controlling
Standby system
CW/CCW/short brake/stop function modes.
Built-in overcurrent protection
Built-in thermal shutdown circuit
Package: HSOP-20/DIP-16
Pin Assigument
Note: This product has a MOS structure and is sensitive to electrostatic discharge. When handling this product,
ensure that the environment is protected against electrostatic discharge by using an earth strap, a conductive
mat and an ionizer. Ensure also that the ambient temperature and relative humidity are maintained at
reasonable levels.
TB6549F
TB6549P
Weight
HSOP20-P-450-1.00: 0.79 g (typ.)
DIP16-P-300-2.54A: 1.11 g (typ.)
Preliminary
N.C.
CcpA
CcpB
CcpC
N.C.
S-GND
(Fin)
N.C.
IN1
IN2
N.C.
OUT1
V
CC
N.C.
V
reg
SB
N.C.
S-GND
(Fin)
N.C.
PWM
N.C.
OUT2
P-GND
HSOP20-P-450-1.00
CcpA
CcpB
CcpC
S-GND
S-GND
IN1
IN2
OUT1
V
CC
V
reg
SB
S-GND
S-GND
PWM
OUT2
P-GND
DIP16-P-300-2.54A
TB6549F/P
2002-08-30
2
Block Diagram
Pin Functions
Pin No.
F P
Pin Name
Functional Description
Remarks
1
(NC)
No
Connection
2
1
CcpA
Capacitor connection pin for charge pump A Connect a capacitor for charge pump
3
2
CcpB
Capacitor connection pin for charge pump B Connect a capacitor for charge pump
4
3
CcpC
Capacitor connection pin for charge pump C Connect a capacitor for charge pump
5
(NC)
No
Connection
6
(NC)
No
Connection
7
6
IN1
Control signal input 1
Input 0/5-V signal
8
7
IN2
Control signal input 2
Input 0/5-V signal
9
(NC)
No
Connection
10
8
OUT1
Output pin 1
Connect to motor coil pin
11 9 P-GND
Power
GND
12
10
OUT2
Output pin 2
Connect to motor coil pin
13
(NC)
No
Connection
14
11
PWM
PWM control signal input pin
Input 0/5-V PWM signal
15
(NC)
No
Connection
16
(NC)
No
Connection
17
14
SB
Standby pin
H: Start, L: Standby
18 15 V
reg
5 V output pin
Connect a capacitor to S-GND
19
(NC)
No
Connection
20 16 V
CC
Power supply input pin
V
CC (ope)
=
10 to 27 V
FIN
4, 5, 12, 13
S-GND
GND pin
Control logic
Overcurrent
detecting circuit
T
SD
OSC
5 V
IN1
IN2 P-GND
OUT1
OUT2
SB V
CC
S-GND
V
reg
CcpA CcpB CcpC
Charge pump circuit
PWM
TB6549F/P
2002-08-30
3
Maximum Ratings
(Ta
=
=
=
=
25C)
Characteristics Symbol
Rating
Unit
Supply voltage
V
CC
30 V
I
O
(Peak)
3.5
(Note 1)
Output current
I
O
(Ave)
2.0
A
F
2.5
(Note 2)
Power dissipation
P
P
D
2.5
(Note 3)
W
Operating temperature
T
opr
-
20 to 85
C
Storage temperature
T
stg
-
55 to 150
C
Note 1: The maximum ratings must be observed strictly. Make sure that all the characteristics listed above never
exceed the maximum ratings.
Note 2: This value is obtained by 115
75
1.6 mm PCB mounting occupied 30% of copper area.
Note 3: This value is obtained by 50
50
1.6 mm PCB mounting occupied 50% of copper area.
Operating Range
(Ta
=
=
=
=
25C)
Characteristics Symbol
Rating
Unit
Supply voltage
V
CC
10 to 27
V
PWM frequency
f
CLK
100 kHz
TB6549F/P
2002-08-30
4
Electrical Characteristics
(V
CC
=
=
=
=
24 V, Ta
=
=
=
=
25C)
Characteristics Symbol
Test
Circuit
Test Condition
Min
Typ.
Max
Unit
I
CC1
Stop mode
4 8
I
CC2
CW/CCW
mode
6 10
I
CC3
Short
break
mode
4 8
Supply current
I
CC4
1
(Standby mode)
1 2
mA
V
INH
2
5.5
Input voltage
V
INL
2
0.8
Hysteresis
voltage
V
IN (HYS)
(Not tested)
0.2
V
I
INH
V
IN
=
5 V
50 75
Control circuit
Input current
I
INL
1
V
IN
=
0 V
5
A
VPWMH
2
5.5
Input voltage
VPWML
3
0.8
Hysteresis
voltage
V
PWM(HYS)
(Not tested)
0.2
V
IPWMH
VPWM
=
5 V
50 75
Input current
IPWML
3
VPWM
=
0 V
5
A
PWM frequency
f
PWM
Duty
=
50
%
100 kHz
PWM input circuit
Minimum clock
pulse width
tw(PWM)
3
2
s
V
INSH
2
5.5
Input voltage
V
INSL
2
0.8
Hysteresis
voltage
V
IN (HYS)
(Not tested)
0.2
V
I
INSH
V
IN
=
5 V
50 75
Standby circuit
Input current
I
INSL
1
V
IN
=
0 V
5
A
I
o
=
0.2 A
1.0 1.75
Output ON resistance
R
on (U
+
L)
4
I
o
=
1.5 A
1.0 1.75
I
L (U)
V
CC
=
30 V
(Note 1)
150
Output leakage current
I
L (L)
5
V
CC
=
30 V
10
A
V
F (U)
I
o
=
1.5 A
1.3
1.7
Diode forward voltage
V
F (L)
6
I
o
=
1.5 A
1.3
1.7
V
Internal reference voltage
V
reg
4
No
load
4.5 5 5.5 V
Overcurrent detection offset time
I
SD (OFF)
(Not tested)
50
s
Charge pump rising time
t
ONG
7
C
1
=
0.22
F, C
2
=
0.01
F
(Note
2)
1 3 ms
Thermal shutdown circuit operating
temperature
T
SD
(Not tested)
160
C
Note 1: Include the current in the circuit.
Note 2: C
1
is a capacitor between CcpA and GND. C
2
is a capacitor between CcpB and CcpC.
TB6549F/P
2002-08-30
5
Component Description
1. Control Input/PWM Input Circuit
The input signals are shown below. Input at the CMOS and TTL levels can be provided. Note that the
input signals have a hysteresis of 0.2 V (typ.).
V
INH
: 2 to V
reg
V
V
INL
: GND to 0.8 V
The PWM input frequency should be 100 kHz or less.
Input/Output Function
Input Output
IN1 IN2 SB PWM OUT1
OUT2
Mode
H
H H H
L
L L
Short
brake
H L H
CW/CCW
L H H
L L L
Short
brake
H H L
CCW/CW
H L H
L L L
Short
brake
H
L L H
L
OFF
(high impedance)
Stop
H
H/L H/L L
L
OFF
(high impedance)
Standby
PWM control function
Motor speed can be controlled by inputting the 0/5-V PWM signal to the PWM pin.
When PWM control is provided, normal operation and short brake operation are repeated.
If the upper and lower power transistors in the output circuit were ON at the same time, a penetrating
current would be produced. To prevent this current from being produced, a dead time of 300 ns (design
target value) is provided in the IC when either of the transistors changes from ON to OFF, or vice versa.
Therefore, PWM control by synchronous rectification is enabled without an OFF time being inserted by
external input. Note that a dead time is also provided in the IC at the time of transition between CW
and CCW or between CW (CCW) and short brake mode, thereby eliminating the need for an OFF time.
V
DD
V
DD
100 k
IN1
(IN2, PWM)
TB6549F/P
2002-08-30
6
Note: Please set the pin PWM to High when PWM control function is not used.
2. Standby
Circuit
All circuits are turned off except the standby circuit and the charge pump circuit under the standby
condition.
Input voltage range is shown below. Input at CMOS and TTL level is possible. Input signal has 0.2-V
(typ.) hysteresis.
V
INSH
: 2 to V
reg
V
V
INSL
: GND to 0.8 V
Please avoid controlling the output by inputting PWM signal to the standby pin. The output signal
becomes unstable and it may cause the destruction of the IC.
The charge pump circuit is turned On/Off by the switch of the input signal from the standby pin. If the
switching cycle is shorter than 50 ms, the charge pump circuit will not operate with precise timing.
Therefore, switching cycle of the standby pin should be longer than 50 ms.
When the Standby condition is changed to the Operation Mode, set IN1 and IN2 to Low level (Stop
Mode) at first. Then switch IN1 and IN2 to High level when the charge pump circuit reaches the stable
condition, VcpA is about V
CC
+
5 V.
V
CC
M
GND
V
CC
M
GND
PWM ON
t5
PWM OFF
ON
t4
=
300 ns (typ.)
V
CC
M
GND
PWM OFF
t3
PWM ON
OFF
t2
=
300 ns (typ.)
V
CC
M
GND
V
CC
M
GND
PWM ON
t1
OUT1 OUT1
OUT1
OUT1
OUT1
t2
GND
V
CC
Output Voltage Waveform
(OUT1)
t1
t3
t5
t4
V
DD
V
DD
100 k
SB
TB6549F/P
2002-08-30
7
3. Internal Constant-Voltage (5 V) Circuit
This IC includes a 5-V power supply for control circuit.
A capacitor for prevention of oscillation should be connected to S-GND associated with the pin V
reg
.
No other loads should be connected to pin V
reg
.
This IC has a power monitoring function and turns the output OFF when V
reg
goes down to 3.0 V
(design target value) or less. With a hysteresis of 0.3 V (design target value), the output are turned ON
when V
reg
reaches 3.3 V (design target value) again .
4. Charge Pump Circuit
This IC has a charge pump circuit for driving the gate for the upper power transistor in the output
circuit. A voltage of V
CC
+
5 V (typ.) is generated by connecting an external capacitor to this IC.
It takes about 2 ms to boost V
CPA
up V
CC
+
5 V (typ.) after the switch of the input signal from the
standby pin. (while CcpA
=
0.22
F, and CcpB and CcpC are connected through 0.01
F).
The proper capacitance of the external capacitor varies depending on the V
CC value
. Thus, determine
the constant by referring to the following data. The value of the capacitor between CcpB and CcpC
should be such that, while the motor is being driven, the voltage on the CcpA pin will be kept constant,
typically at V
CC
+ 5 V. (If a reduced V
CC
level causes the voltage on CcpA to start to fall, please adjust
this capacitance value accordingly.)
<
External capacitor
>
V
CC
Between CcpB and CcpC
Between CcpA and GND
10 V~15 V
0.01
F~0.047
F 0.22
F
15 V~27 V
0.01
F 0.22
F
Reference oscillation is performed by using the internal capacitor.
V
CC
V
reg
V
CC
CcpC
V
CC
CcpB
CcpA
TB6549F/P
2002-08-30
8
5. Output
Circuit
This IC uses Nch MOS transistors as the upper and lower transistors in the output circuit.
As output R
on
is 1
(sum for the upper and lower parts/typ.), this IC is a device of the low R
on
type.
The switching characteristics of the output transistors are shown below.
<
Typical Value
>
Item Typical
Value
Unit
t
pLH
350
t
pHL
800
t
r
60
t
f
100
ns
*
:
OUT 1, OUT 2; open
<
Actural Measured Waveform
>
V
CC
OUT1
(OUT2)
P-GND
Output Voltage
(OUT1/OUT2)
90
10
50
t
pLH
t
r
50
t
pHL
90
10
t
f
PWM Input
t
r
t
pLH
(350 ns)
(60 ns)
PWM input
Output voltage
t
pLH
(800 ns)
(100 ns)
t
f
TB6549F/P
2002-08-30
9
6. V
CC
Power Supply Section
The V
CC
power supply delivers a voltage to the output circuit, charge pump circuit, and internal 5-V
circuit.
The operating voltage range is shown below.
V
CC (opr.)
=
10 to 27 V
This IC has a power monitoring function for preventing an output malfunction on power-up. However,
Toshiba recommends that IN1, IN2, and SB be set to the Low level at power-on.
7. GND
Sections
This IC includes two separate GND sections: S-GND for controlling and P-GND for outputting. Be sure
to short- circuit these two GNDs as close to TB6549 as possible.
8. Power
Monitoring
Circuit
This circuit turns the output OFF when V
reg
becomes 3.0 V (design target value) or less. At this time,
V
CC
=
4.6 V (typ.)
With a hysteresis of 0.3 V (design target value), the output turns back ON when V
reg
exceeds 3.3 V
(design target value) after this circuit starts operating.
9. Thermal
Shutdown
(T
SD
) Circuit
This IC includes a thermal shutdown circuit which turns the output OFF when the junction temperature
(Tj) exceeds 160C (typ.). The output turns back ON automatically. The thermal hysteresis is 20C.
T
SD
=
160C (design target value)
T
SD
=
20C (design target value)
10. Overcurrent Detection (I
SD
) Circuit
This IC includes a circuit which detects a current flowing through the output power transistors. The
current limit is set to 5 A (typ.). The circuit detects a current flowing through each of the four output power
transistors. If the current in any one output power transistor exceeds the set limit, this circuit turns all the
outputs OFF.
This circuit includes a timer which causes the outputs to be OFF for 50
s (typ.) after detection of an
overcurrent and then turn back ON automatically. If the overcurrent continues to flow, this ON-OFF
operation is repeated. Note that to prevent a malfunction due to a glitch, an insensitive period of 10
s
(typ.) is provided.
The set limit is 5 A (typ.) as a design target value. The distributions shown below exist because of the
variations in thermal characteristics of different ICs. These distributions should be fully considered in the
motor torque design.
Also, output peak current should be less than 3 A because of the variations below,
Detected current: Approximately from 3.5 to 6.5 A
I
LIM
50
s
(typ.)
0
10
s
(typ.)
Insensitive period
50
s
(typ.)
10
s
(typ.)
Output Current
TB6549F/P
2002-08-30
10
Test Circuit
1. Icc1, Icc2, Icc3, Icc4, I
INH
, I
INL
, I
INSH
, I
INSL
Icc1: IN1
=
0 V, IN2
=
0 V, SB
=
5 V
Icc2: IN1
=
5 V, IN2
=
5 V, SB
=
5 V or IN1
=
0 V, IN2
=
5 V, SB
=
5 V
Icc3: IN1
=
5 V, IN2
=
5 V, SB
=
5 V
Icc4: IN1
=
5 V/0 V, IN2
=
5 V/0 V, SB
=
0 V
I
INH
: IN1
=
5 V, and IN2
=
5 V
I
INL
: IN2
=
0 V, and IN2
=
0 V
I
INSH
: SB
=
5 V
I
INSL
: SB
=
0 V
2. V
INH
, V
INL
, V
INSH
, V
INSL
V
INH
, V
INSH
: IN1
=
IN2
=
SB
=
2 V, Verify that OUT1
=
OUT2
=
L.
V
INL
: IN1
=
0.8 V, IN2
=
SB
=
2 V, Verify that OUT1
=
L, OUT2
=
H. IN1
=
SB
=
2 V, IN2
=
0.8 V, Verify
that OUT1
=
OUT2
=
L.
V
INSL
: IN1
=
IN2
=
2 V, SB
=
0.8 V, Verify that output function is high impedance.
5V
5V/0V
5V/0V
5V/0V
A
I
CC
24V
V
CC
V
reg
CcpC
CcpB
CcpA
PWM
A
IN1
I
IN
A
IN2
I
IN
A
SB
I
INS
P-GND
S-GND
OUT1
OUT2
TB6549F/P
V
24V
V
CC
V
reg
CcpC
CcpB
CcpA
PWM
5V
IN1
2V/0.8V
IN2
0.8V/2V
SB
2V/0.8V
P-GND
S-GND
OUT1
OUT2
TB6549F/P
V
TB6549F/P
2002-08-30
11
3. V
PWMH
, V
PWML
, I
PWMH
, I
PWML
, f
PWM
, tw
(PWM)
V
PWMH
, V
PWML
, f
PWM
: PWM
=
2 V/0.8 V, 100 kHz, dury: 50 % (rectangle wave), Verify out1
V
PWMH
, V
PWML
: PWM
=
5 V or PWM
=
0 V.
tw
(PWM)
: PWM
=
2 V/0.8 V, 100 kHzdury: 20 % (2
s) (2
s/rectangle wave), Verify out1
4. Ron (H
+
L), Vreg
Ron (H
+
L): Measure Vds (Sum of upper and lower side) at I
O
=
0.2 A, and change it to resistor. Same as
at I
O
=
1.5 A.
Vreg: Vreg pin Voltage.
24V
V
CC
V
reg
CcpC
CcpB
CcpA
PWM
5V/0V
IN1
100kHz
5V
IN2
0V
SB
5V
P-GND
S-GND
TB6549F/P
V
OUT1
OUT2
V
A
I
PWM
2V/0.8V
V
24V
V
CC
V
reg
CcpC
CcpB
CcpA
PWM
IN1
IN2
0V/5V
SB
5V
P-GND
S-GND
OUT1
OUT2
TB6549F/P
V
V
5V
5V/0V
I
O
I
O
TB6549F/P
2002-08-30
12
5. I
L (U)
, I
L (L)
6. V
F (U)
, V
F (L)
V
F (U)
, V
F (L)
: I
O
=
1.5 A.
A
30V
V
CC
V
reg
CcpC
CcpB
CcpA
PWM
IN1
IN2
0V
SB
5V
P-GND
S-GND
OUT1
OUT2
TB6549F/P
5V
0V
I
L(H)
A
I
L(L)
V
24V
V
CC
V
reg
CcpC
CcpB
CcpA
PWM
IN1
IN2
0V
SB
5V
P-GND
S-GND
OUT1
OUT2
TB6549F/P
V
V
5V
0V
I
O
I
O
V
F(L)
V
F(H)
TB6549F/P
2002-08-30
13
7. t
ONG
t
ONG
: SB
=
0 V
5 V. Measure the time to boost CcpA voltage up about 29 V (24 V
+
5 V)
24V
V
CC
V
reg
CcpC
CcpB
CcpA
PWM
5V
IN1
0V
IN2
0V
SB
0V
5V
P-GND
S-GND
OUT1
OUT2
TB6549F/P
V
TB6549F/P
2002-08-30
14
External Attachments
Symbol Use
Recommended
Value
Remarks
C
1
Charge
pump
0.22
F
0.01
F V
CC
=
24 V (Note)
C
2
Charge
pump
0.033
F V
CC
=
12 V (Note)
C
3
Prevention
of
V
reg
oscillation
0.1
F to 1.0
F
C
4
Absorption of power noise
0.001
F to 1
F
C
5
Absorption of power noise
50
F to 100
F
Note: The recommended values for charge pumps depend on the V
CC
value. Please refer to the Component
Description 4, Charge Pump Circuit.
P
o
w
e
r
di
ssi
pati
on P
D
(
W
)
P
D
Ta (TB6549P)
Ambient temperature Ta (C)
(1) When mounted on PCB
(50
50
1.6mm glass-epoxy
PCB mounting occupied 50% of
copper area.)
(2) IC only
(1)
(2)
0
0
3.0
240
40 80 120 160 200
0.6
1.2
1.8
2.4
Ambient temperature Ta (C)
P
D
Ta (TB6549F)
M
a
x
i
mu
m pow
er
d
i
s
s
i
pa
t
i
on
P
D
MA
X
(
W
)
0
0 50 100 150 200
2
4
6
Infinite heat sink
(Note)
No heat sink
Thermal resistance
Rth (j-c)
=
13C/W
Rth (j-a)
=
130C/W
Note: 50
50
1 mm
3
Fe heat sink
TB6549F/P
2002-08-30
15
Typical Application Diagram
Note 1: Connect V
CC
and P-GND through the power supply capacitor. This capacitor should be as close as possible
to the IC.
Note 2: When connecting the motor pins through the capacitor for reducing noise, connect a resistor to the capacitor
for limiting the charge current. The switching loss increases for PWM control. Therefore, whenever
practicable, avoid connecting the capacitor if PWM control is required.
Note 3: Short-circuit S-GND and P-GND as close to TB6549 as possible.
Note 4: Connect the capacitor C
3
to S-GND.
Note 5: Connect the capacitors C
1
and C
2
as close to TB6549 as possible, and the capacitor C
1
as close to S-GND.
Note 6: Pins 4, 5, 12, and 13 of the P type are connected to the chip's bed. Therefore, expanding their round area
produces a better heat radiation effect.
Usage Precautions
This IC includes an overcurrent detection circuit. However, if a short circuit takes place between output pins or
if an output pin is connected to the voltage source or ground, a heavy current temporarily flows through the IC.
It might destroy the IC. This possibility should be fully considered in the design of the output line, V
CC
line,
and GND line. If the IC is destroyed, a heavy current might continuously flow through it as a secondary effect.
Therefore, Toshiba recommends that a fuse be connected to the power supply line.
Install this IC properly. If not, (e.g., installing it in the wrong position), the IC might be destroyed.
TB6549F: Pins 1, 5, 6, 9, 13, 15, 16, and 19 are not connected.
IN2
IN1
S-GND
OUT1
OUT2
SB
FIN/4,5,12,13
12/10
TB6549F/P
Microcontroller
GND
5 V
V
DD
V
CC
11/9
24V
Note 1
Note 2
Note 3
PORT1
PORT2
PORT3
P-GND
V
reg
Note 4
3/2
4/3
CcpA CcpB CcpC
PWM
20/16
PWM
10/8
18/15
2/1
Note 5
C
1
C
2
C
3
C
4
C
5
TB6549F/TB6549P
14/11
7/6
17/14
8/7
M
TB6549F/P
2002-08-30
16
Package Dimensions
Weight: 0.79 g (typ.)
TB6549F/P
2002-08-30
17
Package Dimensions
Weight: 1.11 g (typ.)
TB6549F/P
2002-08-30
18
TOSHIBA is continually working to improve the quality and reliability of its products. Nevertheless, semiconductor
devices in general can malfunction or fail due to their inherent electrical sensitivity and vulnerability to physical
stress. It is the responsibility of the buyer, when utilizing TOSHIBA products, to comply with the standards of
safety in making a safe design for the entire system, and to avoid situations in which a malfunction or failure of
such TOSHIBA products could cause loss of human life, bodily injury or damage to property.
In developing your designs, please ensure that TOSHIBA products are used within specified operating ranges as
set forth in the most recent TOSHIBA products specifications. Also, please keep in mind the precautions and
conditions set forth in the "Handling Guide for Semiconductor Devices," or "TOSHIBA Semiconductor Reliability
Handbook" etc..
The TOSHIBA products listed in this document are intended for usage in general electronics applications
(computer, personal equipment, office equipment, measuring equipment, industrial robotics, domestic appliances,
etc.). These TOSHIBA products are neither intended nor warranted for usage in equipment that requires
extraordinarily high quality and/or reliability or a malfunction or failure of which may cause loss of human life or
bodily injury ("Unintended Usage"). Unintended Usage include atomic energy control instruments, airplane or
spaceship instruments, transportation instruments, traffic signal instruments, combustion control instruments,
medical instruments, all types of safety devices, etc.. Unintended Usage of TOSHIBA products listed in this
document shall be made at the customer's own risk.
The products described in this document are subject to the foreign exchange and foreign trade laws.
The information contained herein is presented only as a guide for the applications of our products. No
responsibility is assumed by TOSHIBA CORPORATION for any infringements of intellectual property or other
rights of the third parties which may result from its use. No license is granted by implication or otherwise under
any intellectual property or other rights of TOSHIBA CORPORATION or others.
The information contained herein is subject to change without notice.
000707EBA
RESTRICTIONS ON PRODUCT USE
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