TOSHIBA TB6549F, TB6549P Technical data
TB6552FN/FL
Toshiba Bi-CD Integrated Circuit Silicon Monolithic
TB6552FN,TB6552FL
Dual-Bridge Driver IC for DC motor
TB6552FN/FL is a dual-bridge driver IC for DC motor with
output transistor in LD MOS structure with low ON-resistor. Two
input signals, IN1 and IN2, can chose one of four modes such as
CW, CCW, short brake, and stop mode. Efficient driven at high
temperature is possible by PWM drive system.
TB6552FN
Features
· Power supply voltage for motor: VM ≤ 15 V (max)
· Power supply voltage for control: V
· Output current: 1 A (max)
· Low ON resistor: 1.5 Ω (typ.)
(Upper side + Lower side combined @ VM = 5 V)
· Direct PWM control
· Standby system (Power save)
· CW/CCW/short brake/stop function modes.
· Built-in thermal shutdown circuit
· Package: SSOP16 for TB6552FN /QON24 for TB6552FL
* 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.
= 2.7 V to 6.0 V
CC
TB6552FL
Weight
SSOP16-P-225-0.65B : 0.07 g (typ.)
QON24-P-0505-0.50 : 0.05 g (typ.)
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Block Diagram
TB6552FN/FL
VCC BSTBY
GND ASTBY
Pin Functions
BIN1 BIN2 BPWM
Control logic (Ch. B)
Control logic (Ch. A)
AIN1 AIN2 APWM
TSD
BO1
AO1
BO2
Bridge Driver
(Ch. B)
Bridge Driver
(Ch. A)
AO2
VM
PGND
Pin.Name
GND 1 21 Small-signal GND pin GND for small-signal power supply (VCC)
AIN1 2 18 Control signal input 1 (Ch. A)
AIN2 3 17 Control signal input 2 (Ch. A)
APWM 4 16
ASTBY 5 15
AO1 7 13 Output pin 1 (Ch. A) Ch. A connect to motor coil pin
AO2 8 11 Output pin 2 (Ch. A) Ch. A connect to motor coil pin
PGND 9 10 GND pin for motor GND for motor power supply (VM)
VM 6 14 Motor power supply pin VM (ope) = 2.5 V to 13.5 V
BO2 10 8 Output pin 2 (Ch. B) Ch. B connect to motor coil pin
BO1 11 5 Output pin 1 (Ch. B) Ch. B connect to motor coil pin
BSTBY 12 4
BPWM 13 3
BIN2 14 2 Control signal input 2 (Ch. B)
BIN1 15 1 Control signal input 1 (Ch. B)
VCC 16 22 Small-signal power supply pin VCC
Pin No
FN FL
Functional Description Remarks
PWM control signal input pin
(Ch. A)
Standby control input pin
(Ch. A)
Standby control input pin
(Ch. B)
PWM control signal input pin
(Ch. B)
Input PWM signal
Ch. A circuit is in standby (power save) state
while this signal is Low.
Ch. B circuit is in standby (power save) state
while this signal is Low.
Input PWM signal
= 2.7 V to 5.5 V
(ope)
Note: Pins 6, 7, 9, 12, 19, 20, 23 and 24 on the FL are NC (not connected) pins.
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TB6552FN/FL
Input/Output Function
(common for channel A and B)
Input Output
IN1 IN2 STBY PWM O1 O2 Mode
H H H
L H H
H L H
L L H
H/L H/L L
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)
Operating Description
· PWM control function
Speed can be controlled by inputting the high-level or low-level PWM signal to the pin PWM.
When PWM control is provided, normal operation and short brake operation are repeated.
To prevent penetrating current, dead time t2 and t4 is provided in the IC.
VM
VM
Stop
Standby
VM
O1 O2
Output Voltage Waveform
M
PWM ON
t1
(O1)
O1
GND
O1 O2
M
PWM OFF ® ON
t4 = 300 ns (typ.)
t1
M
PWM ON ® OFF
t2 = 300 ns (typ.)
VM
GND
t5
t3
O2
GND
O1 O2
M
PWM ON
t5
O1 O2
VM
GND
V
CC
M
GND
PWM OFF
t3
t2
t4
Note: Please set the pin PWM to High when PWM control functionn is not used.
3
GND
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TB6552FN/FL
· Switching characteristics of output transistors
The switching characteristics between PWM input and the output transistors are shown below.
PWM Input
(APWM, BPWM)
t
pLH
t
pHL
Output Voltage
(A01, A02, B01, B02)
10％
90％
50％
t
r
90％
50％
10％
t
f
<Typical Value>
Item Typical Value Unit
t
1000
pLH
t
1000
pHL
tr 100
tf 100
ns
· Input pin
Input pins (AIN1, AIN2, APWM, ASTBY, BIN1, BIN2, BPWM and BSTBY) have internal pull-down
resistors that are connected to ground.
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