TOSHIBA TB6549F, TB6549P Technical data
Toshiba Bi-CMOS Integrated Circuit Silicon Monolithic
y
(
Preliminar
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 Ω (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
HSOP20-P-450-1.00
DIP16-P-300-2.54A
TB6549F
TB6549P
Weight
HSOP20-P-450-1.00: 0.79 g (typ.)
DIP16-P-300-2.54A: 1.11 g (typ.)
TB6549F/P
N.C.
CcpA
CcpB
CcpC
N.C.
S-GND
Fin)
N.C.
IN1
IN2
N.C.
OUT1
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.
V
CC
N.C.
V
reg
SB
N.C.
S-GND
(Fin)
N.C.
PWM
N.C.
OUT2
P-GND
CcpA
CcpB
CcpC
S-GND
S-GND
IN1
IN2
OUT1
V
CC
V
reg
SB
S-GND
S-GND
PWM
OUT2
P-GND
1
2002-08-30
Block Diagram
V
reg
5 V
Control logic
OSC
Overcurrent
detecting circuit
T
SD
Charge pump circuit
PWM
CC
TB6549F/P
OUT1 OUT2 SB V
CcpA CcpB CcpC
IN1 IN2 P-GND
S-GND
Pin Functions
Pin No.
F P
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
19 (NC) No Connection
20 16 VCC Power supply input pin V
FIN 4, 5, 12, 13 S-GND GND pin
Pin Name Functional Description Remarks
5 V output pin Connect a capacitor to S-GND
reg
= 10 to 27 V
CC (ope)
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2002-08-30
TB6549F/P
Maximum Ratings
Characteristics Symbol Rating Unit
Supply voltage V
Output current
Power dissipation
Operating temperature T
Storage temperature T
(Ta ==== 25°C)
F
P
CC
IO (Peak)
(Ave) 2.0
I
O
PD
−20 to 85 °C
opr
stg
30 V
3.5
2.5
2.5
−55 to 150 °C
(Note 1)
(Note 2)
(Note 3)
A
W
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 ==== 25°C)
Characteristics Symbol Rating Unit
Supply voltage V
PWM frequency f
CC
CLK
10 to 27 V
100 kHz
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TB6549F/P
Electrical Characteristics
Characteristics Symbol
Supply current
Input voltage
Control circuit
PWM input circuit
Standby circuit
Output ON resistance R
Output leakage current
Diode forward voltage
Internal reference voltage V
Overcurrent detection offset time I
Charge pump rising time t
Thermal shutdown circuit operating
temperature
Hysteresis
voltage
Input current
Input voltage
Hysteresis
voltage
Input current
PWM frequency
Minimum clock
pulse width
Input voltage
Hysteresis
voltage
Input current
(VCC ==== 24 V, Ta ==== 25°C)
Test
Circuit
I
CC1
I
CC2
I
CC3
I
CC4
V
INH
V
INL
V
IN (HYS)
I
INH
I
INL
V
PWMH
V
PWML
V
PWM(HYS)
I
PWMH
I
PWML
f
PWM
tw(
PWM)
V
INSH
V
INSL
V
IN (HYS)
I
INSH
I
INSL
on (U + L)
I
L (U)
I
L (L)
V
F (U)
V
F (L)
reg
SD (OFF)
ONG
T
SD
CW/CCW mode 6 10
Short break mode 4 8
2 5.5
(Not tested) 0.2
V
V
2 5.5
(Not tested) 0.2
V
4
V
I
4 No load 4.5 5 5.5 V
(Not tested) 50 µs
7
(Not tested) 160 °C
Stop mode 4 8
1
(Standby mode) 1 2
2
0.8
= 5 V 50 75
IN
1
VIN = 0 V 5
3
(Not tested) 0.2
PWM
3
V
PWM
Duty = 50% 100 kHz
3
2 µs
2
0.8
= 5 V 50 75
IN
1
VIN = 0 V 5
Io = 0.2 A 1.0 1.75
= 1.5 A 1.0 1.75
I
o
= 30 V (Note 1) 150
CC
5
V
= 30 V 10
CC
= 1.5 A 1.3 1.7
o
6
I
= 1.5 A 1.3 1.7
o
= 0.22 µF, C2 = 0.01 µF
C
1
(Note 2)
Test Condition Min Typ. Max Unit
2 5.5
0.8
= 5 V 50 75
= 0 V 5
1 3 ms
mA
V
µA
V
µA
V
µA
Ω
µA
V
Note 1: Include the current in the circuit.
Note 2: C1 is a capacitor between CcpA and GND. C2 is a capacitor between CcpB and CcpC.
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2002-08-30
Component Description
1. Control Input/PWM Input Circuit
VDD V
IN1
(IN2, PWM)
100 kΩ
• 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
V
: 2 to V
INH
: GND to 0.8 V
INL
reg
V
• The PWM input frequency should be 100 kHz or less.
DD
Input/Output Function
Input Output
IN1 IN2 SB PWM OUT1 OUT2 Mode
H H H
L H H
H L H
L L H
H/L H/L L
• 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.
H
L
H L H CW/CCW
L L L Short brake
H H L CCW/CW
L L L Short brake
H
L
H
L
L L Short brake
OFF
(high impedance)
OFF
(high impedance)
TB6549F/P
Stop
Standby
5
2002-08-30
TB6549F/P
VCC
VCC
VCC
OUT1 OUT1 OUT1
Output Voltage Waveform
M
GND
PWM ON
t1
VCC
M
PWM OFF → ON
t4 = 300 ns (typ.)
t1
(OUT1)
t2
M
PWM ON → OFF
t2 = 300 ns (typ.)
OUT1 OUT1
GND
t5
t3
t4
GND
PWM ON
t5
M
V
CC
GND
M
GND
PWM OFF
t3
VCC
GND
Note: Please set the pin PWM to High when PWM control function is not used.
2. Standby Circuit
VDD V
SB
100 kΩ
• 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
V
: 2 to V
INSH
: GND to 0.8 V
INSL
reg
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.
DD
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2002-08-30
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