TB6559FG
TOSHIBA Bi-CD Integrated Circuit Silicon Monolithic
TB6559FG
Full-Bridge DC Motor Driver IC
The TB6559FG is a full-bridge DC motor driver with LDMOS
output transistors.
It uses P-channel MOSFETs on the high side and N-channel
MOSFETs on the low side, eliminating the need for a charge
pump. The TB6559FG achieves high thermal efficiency.
Four operating modes are selectable via IN1 and IN2: clockwise
(CW), counterclockwise (CCW), short brake and stop.
Features
•
•
•
•
•
•
•
•
Power supply voltage: 50 V (max)
Output current: 2.5 A (max)
Low-ON resistance (upper and lower sum): 1.3
Ω
(typ.)
Constant-current or direct PWM
Standby mode
Clockwise (CW), counterclockwise (CCW), short brake and stop
Overcurrent protection
Thermal shutdown
Weight: 0.50 g (typ.)
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TB6559FG
Block Diagram
VREG
15
ALERT
11
V
CC
5
REG
Overcurrent Protection
Thermal Shutdown
IN1 1
7 OUT1
IN2 16
Decoder
SB 2
Timing Logic
9 OUT2
OSC/PWM 14
OSC/PWM
4/12/13
S-GND
3
V
ref
8
RSA
10
P-GND
2
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TB6559FG
Pin Functions
Pin No
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
Fin
Pin Name
IN1
SB
V
ref
S-GND
V
CC
(NC)
OUT1
RSA
OUT2
P-GND
ALERT
S-GND
S-GND
OSC/PWM
VREG
IN2
Fin
Functional Description
Control signal input 1
Standby pin
Supply voltage pin for current control
Ground
Power supply pin
No connection
Output pin 1
Connection pin for an output current
detection resistor
Output pin 2
Power ground
Protective operation alert output
Ground
Ground
Connection pin for an external
capacitor/PWM input
5-V output pin
Control signal input 2
Ground
5 V: Protective operation
0 V: Normal
―
―
V
ref
= 0 to 3 V: Connect a capacitor for oscillation
V
ref
= 4.5 to 5.5 V : Input PWM signal
Connect a capacitor between VREG and S-GND.
Apply either a 0-V or 5-V signal.
Connect Fin to S-GND
V
CC (ope)
= 10 to 30 V
―
Connect OUT1 to a motor coil pin.
―
Connect OUT2 to a motor coil pin.
―
Remarks
Apply either a 0-V or 5-V signal.
H: Start, L: Standby
0 to 3 V: constant-current control
4.5 to 5.5 V: PWM control
―
Absolute Maximum Ratings
(T
a
= 25°C)
Characteristics
Supply voltage
Output current
Power dissipation
Operating temperature
Storage temperature
Symbol
V
CC
I
O
(Peak)
I
O
(Ave)
P
D
T
opr
T
stg
Rating
50
2.5 (Note 1)
1.0
1.4 (Note 2)
−30
to 85
−55
to 150
Unit
V
A
W
°C
°C
Note 1: The absolute maximum ratings are the limits that must not be exceeded, even for an instant, under worst
possible conditions.
Note 2: Measured on a 60 mm
×
30 mm
×
1.6 mm PCB with a 50% dissipating copper surface.
Operating Ranges
(T
a
= 25°C)
Characteristics
Supply voltage
PWM frequency
OSC frequency
VREG output current
Symbol
V
CC
f
CLK
f
OSC
VREGout
Rating
10 to 30
up to 100
up to 500
up to 1
Unit
V
kHz
kHz
mA
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TB6559FG
Electrical Characteristics
(V
CC
= 24 V, T
a
= 25°C, unless otherwise specified)
Characteristics
Symbol
I
CC1
Supply current
I
CC2
I
CC3
I
CC4
Input voltage
Control circuit
Hysteresis voltage
Input current
V
INH
V
INL
V
IN (HYS)
I
INH
I
INL
V
PWMH
V
PWML
V
PWM(HYS)
I
PWMH
I
PWML
f
PWM
t
w(PWM)
V
INSH
V
INSL
V
IN (HYS)
I
INSH
I
INSL
V
OSC
V
PWM
I
ref
R
on (U + L)
I
L (U)
I
L (L)
V
F (U)
V
F (L)
VREG
T
SD
ΔT
SD
I
OSC(+)
I
OSC(−)
V
ALERT(H)
V
ALERT(L)
I
IN
= VREG
I
O
= 0.2 A
I
O
= 1.5 A
V
CC
= 30 V
V
CC
= 30 V
I
O
= 1.5 A
I
O
= 1.5 A
VREGout = 1 mA
(Design target only. Not tested
in production.)
(Design target only. Not tested
in production.)
V
OSC/PWM
= 1.5 V
(source current)
V
OSC/PWM
= 3.2 V
(sink current)
I
ALERT
=
−1
mA
I
ALERT
= 1 mA
Test Condition
Stop mode
CW and CCW modes
Short brake mode
Standby mode
―
―
(Design target only. Not tested
in production.)
V
IN
= 5 V
V
IN
= 0 V
―
―
(Design target only. Not tested
in production.)
V
PWM
= 5 V
V
PWM
= 0 V
Duty cycle = 50%
―
―
―
(Design target only. Not tested
in production.)
V
IN
= 5 V
V
IN
= 0 V
―
Min
―
―
―
―
2
−0.2
―
―
―
2
−0.2
―
―
―
―
2
2
−0.2
―
―
―
0
4.5
―
―
―
―
―
―
―
4.5
―
―
-1.05
3.8
VREG
−
1
―
Typ.
4
4
4
1
―
―
0.1
50
―
―
―
0.5
55
―
―
―
―
―
0.1
50
―
―
―
1
1.3
1.3
0.1
0.1
1.3
1.3
5
160
40
―
―
―
―
Max
8
8
8
2
5.5
0.8
―
75
2
VREG
0.8
―
75
2
100
―
5.5
0.8
―
75
2
3.0
5.5
3
1.8
1.8
10
10
1.7
1.7
5.5
―
―
-0.65
mA
6.0
―
0.5
μA
Ω
μA
V
μA
kHz
μs
V
μA
V
mA
Unit
Input voltage
Hysteresis voltage
OSC/PWM input
circuit
Input current
PWM frequency
Minimum clock
pulse width
Input voltage
Standby circuit
Hysteresis voltage
Input current
Constant current
control
V
ref
input circuit
PWM control
Input current
Output ON-resistance
V
Output leakage current
μA
Diode forward voltage
Internal reference voltage
Thermal shutdown temperature
Thermal shutdown hysteresis
Charge current
OSC frequency
Discharge current
V
V
°C
°C
ALERT voltage
V
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2013-04-10
TB6559FG
Functional Descriptions
Control Input Pins
VREG
IN1, IN2, SB
100 kΩ
*The circuit diagram is simplified for description.
•
The input voltage ranges of the IN1, IN2, OSC/PWM and SB inputs must be as follows. These inputs are
CMOS- and TTL-compatible, and have a hysteresis of 0.2 V (typ.).
V
INH
: 2 to 5.5 V
V
INL
: GND to 0.8 V
The PWM input frequency should be 100 kHz or less.
In Standby mode, all circuits are turned off, except the standby and 5-V circuits.
To bring the device out of Standby mode, IN1 and IN2 must be set Low once (Stop mode); for an operating
mode must be selected after the power supply becomes stable.
•
•
•
OSC/PWM Input Pin
VREG
SW1
OSC/PWM
SW2
100 kΩ
*The circuit diagram is simplified for description.
Either constant-current or direct PWM is selectable according to the voltage of the V
ref
input (See the “Pin
Functions” table). SW1 and SW2 in the above diagram are controlled by the V
ref
voltage.
•
Constant current PWM
For constant-current PWM, V
ref
must be between 0 V and 3 V (SW1: ON, SW2: OFF) and a capacitor must
be connected between OSC/PWM and ground.
Direct PWM
For direct PWM, V
ref
must be between 4.5 V and 5.5 V (SW1: OFF, SW2: ON).
When a PWM signal with an amplitude between 0 V and 5 V is applied to the OSC/PWM input, the OUT1
and OUT2 levels change accordingly, resulting in an alternating sequence of CW/CCW and short brake.
•
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