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.)
The TB6559FG uses Sn-Ag plating free of lead.
About solderability, following conditions were confirmed
(1) Use of Sn-37Pb solder Bath
· solder bath temperature
=
230°C
· dipping time
=
5 seconds
· the number of times
=
once
· use of R-type flux
(2) Use of Sn-3.0Ag-0.5Cu solder Bath
· solder bath temperature
=
245°C
· dipping time
=
5 seconds
· the number of times
=
once
· use of R-type flux
1
2007-06-12
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
SGND
3
Vref
8
RSA
10
PGND
2
2007-06-12
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
Vref
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
Vref=0 to 3V
5 V: Protective operation
0 V: Normal
⎯
⎯
:Connect a capacitor for oscillation
V
CC (ope)
=
10 to 27 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 V to VREG: PWM control
⎯
Vref=4.5V to Vreg : 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
Absolute Maximum Ratings
(Ta
=
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)
A
1.0
1.4 (Note 2)
−30
to 85
−55
to 150
W
°C
°C
Unit
V
Note 1: The maximum ratings are the limits that must not be exceeded, even for an instant, under worst possible
conditions.
Note 2: Measured on a 60
×
30
×
1.6 mm PCB with a 50% dissipating copper surface.
Operating Ranges
(Ta
=
25°C)
Characteristics
Supply voltage
PWM frequency
OSC frequency
VREG output current
Symbol
V
CC
f
CLK
fosc
VREGout
Rating
10 to 30
up to 100
up to 500
up to 1
Unit
V
kHz
kHz
mA
3
2007-06-12
TB6559FG
Electrical Characteristics
(V
CC
=
24 V, Ta
=
25°C, unless otherwise specified)
Characteristics
Symbol
I
CC1
Supply current
I
CC2
I
CC3
I
CC4
Input voltage
V
INH
V
INL
Control circuit
Hysteresis voltage
V
IN (HYS)
I
INH
I
INL
Input voltage
V
PWMH
V
PWML
Hysteresis voltage
OSC/PWM input
circuit
V
PWM(HYS)
I
PWMH
I
PWML
PWM frequency
Minimum clock
pulse width
Input voltage
f
PWM
3
t
w(PWM)
V
INSH
V
INSL
Standby circuit
Hysteresis voltage
V
IN (HYS)
I
INSH
I
INSL
Constant current
control
Vref input circuit
PWM control
Input current
Output ON-resistance
V
osc
V
PWM
I
ref
R
on (U
+
L)
I
L (U)
I
L (L)
Diode forward voltage
Internal reference voltage
Thermal shutdown temperature
Thermal shutdown hysteresis
Charge current
OSC frequency
Discharge current
Iosc(−)
V
ALERT
(H)
V
ALERT
(L)
V
F (U)
V
F (L)
VREG
T
SD
ΔT
SD
Iosc(+)
4
⎯
6
4
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.)
Vosc/pwm
=
1.5 V (sink current)
Vosc/pwm
=
3.2 V (source
current)
I
ALERT
= −1
mA
I
ALERT
=
1 mA
⎯
(Design target only. Not tested
in production.)
V
IN
=
5 V
V
IN
=
0 V
⎯
⎯
0
4.5
⎯
⎯
⎯
⎯
⎯
⎯
⎯
4.5
⎯
⎯
-1.05
3.8
VREG
−
1
⎯
2
2
2
−0.2
⎯
(Design target only. Not tested
in production.)
V
PWM
=
5 V
V
PWM
=
0 V
Duty cycle
=
50%
3
⎯
(Design target only. Not tested
in production.)
V
IN
=
5 V
V
IN
=
0 V
2
1
Test
Circuit
Test Condition
Stop mode
CW and CCW modes
Short brake mode
Standby mode
Min
⎯
⎯
⎯
⎯
2
−0.2
⎯
⎯
⎯
2
−0.2
⎯
⎯
⎯
⎯
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
VREG
0.8
⎯
75
2
VREG
0.8
⎯
75
2
100
⎯
VREG
0.8
⎯
75
2
3.0
V
VREG
3
1.8
1.8
10
10
1.7
V
1.7
5.5
⎯
⎯
-0.65
mA
6.0
⎯
V
0.5
V
°C
°C
μA
μA
Ω
μA
V
kHz
μs
μA
V
μA
V
mA
Unit
Input current
1
Input current
3
Input current
1
Output leakage current
5
ALERT voltage
4
2007-06-12
TB6559FG
Functional Descriptions
Control and PWM Input Pins
VREG
IN1
(IN2, OSC/PWM, SB)
100 kΩ
VREG
•
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 VREG 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 a operating
mode must be selected after the power supply becomes stable.
•
•
•
OSC/PWM Input Pin
VREG
SW1
OSC/PWM
VREG
SW2
100 kΩ
Either constant-current or direct PWM is selectable according to the voltage of the Vref input (See the “Pin
Functions” table). SW1 and SW2 in the above diagram are controlled by the Vref 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 VREG (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.
•
5
2007-06-12
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