TB6585AFTG
TOSHIBA Bi-CMOS Integrated Circuit
Silicon Monolithic
TB6585AFTG
3-Phase Sine-Wave PWM Driver for BLDC Motors
Features
•
Sine-wave PWM drive
•
Triangular-wave generator
•
Hall amplifier
•
Lead angle control
•
Current limit control input (VRS = 0.5 V (typ.))
TB6585AFTG
•
Rotation pulse output (3 pulse/electrical degree 360°)
•
Operating supply voltage range: VM = 4.5 to 42 V
•
Reference supply output: Vrefout = 4.4 V (typ.), 20 mA (max)
•
•
Output current: IOUT = 1.8 A (max), 1.2 A (typ.)
Weight: QFN48-P-0707-0.50: 0.15 g (typ.)
Output On-resistance Ron (P-channel and N-channel sum) = 0.7 Ω (typ.)
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TB6585AFTG
Gin+
NC
Gin-
NC
NC
NC
NC
NC
NC
Gout
NC
PH
Pin Assignment
48
47
46
45
44
43
42
41
40
39
38
37
V
5
32 LL
U
6
31 ML
VM
7
30 Vrefout
FG
8
29 HUP
HWM
9
28 HUM
HWP 10
27 HVP
S-GND 11
26 HVM
OSC/C 12
25 RESET
13
14
15
16
17
18
19
20
2
21
22
23
24
CW/CCW
33 UL
NC
4
TR
W
NC
34 LA
NC
3
NC
IR
NC
35 IV
NC
2
NC
P-GND
VSP
36 LPF
NC
1
OSC/R
RS
2013-09-02
TB6585AFTG
Pin Description
Pin No
Pin name
7
VM
Motor power supply pin (VM = 4.5 to 42 V)
8
FG
Rotation speed output pin (3 pulses per electrical degree)
9
HWM
W-phase Hall-signal input (−)
10
HWP
W-phase Hall signal input (+)
11
S-GND
Signal ground
12
OSC/C
Connection pin for a capacitor to control PWM oscillation
13
OSC/R
Connection pin for a resistor to control PWM oscillation
15
VSP
Speed control input
22
TR
Time setting pin for the anti-lock system
24
CW/CCW
25
RESET
26
HVM
V-phase Hall-signal input (−)
27
HVP
V-phase Hall-signal input (+)
28
HUM
U-phase Hall-signal input (−)
29
HUP
U-phase Hall-signal input (+)
30
Vrefout
31
ML
Restart operation select input for the anti-lock system
32
LL
Lower limit control for lead angle
33
UL
Upper limit control for lead angle
LA
Lead angle select input (This input is used to determine the
lead-angle under the automatic lead-angle control.)
35
IV
Voltage output converted from the output current
36
LPF
Connection pin for a filter capacitor
37
PH
Connection pin for a peak-hold capacitor
39
Gout
Amplified shunt voltage
46
Gin-
Connection pin for an amplifier resistor
48
Gin+
Shunt voltage input
1
RS
2
P-GND
3
IR
Connection pin for an output shunt resistor
4
W
W-phase output
5
V
V-phase output
6
U
U-phase output
14, 16, 17, 18,
19, 20, 21, 23,
38, 40, 41, 42,
43, 44, 45, 47
N.C
34
Description
Rotation direction select input
Reset pin for disabling the outputs
Reference voltage output (Vrefout = 4.4 V (typ.), Irefout = 20 mA
(max)),
connection pin for an oscillation prevention capacitor
Overcurrent protection input (Disables outputs when RS ≥ 0.5 V)
Power ground
No-connect
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TB6585AFTG
I/O Equivalent Circuits
Some parts are omitted from the equivalent circuit diagrams or simplified for the sake of simplicity.
Pin Description
Symbol
I/O Signal
Internal Circuit Diagram
Vrefout Vrefout
HUP
HUM
Position signal inputs
HVP
HVM
HWP
Analog
Hysteresis: ± 8 mV (typ.)
HWM
Vrefout
VSP
Analog
100 Ω
Input range: 0 to Vrefout
150 kΩ
Speed control input
Digital
L: Clockwise (CW)
H: Counterclockwise
(CCW)
CW/CCW
Vrefout
L: 0.8 V (max)
H: 2.0 V (min)
100 Ω
100 kΩ
Rotation direction
select input
Hysteresis: 200 mV (typ.)
Digital
Vrefout
L: 0.8 V (max)
H: 2.0 V (min)
Reset input
RESET
100 Ω
Hysteresis: 200 mV (typ.)
100 kΩ
L: Drives a motor
H: Reset
CW/CCW
At reset: Outputs are disabled;
internal counter keeps running.
Reset
Vrefout
When fixing the lead angle externally,
connect LL to GND and UL to Vrefout. Also,
apply a control voltage to the LA pin.
3.0 V: 29°
(5-bit AD converter)
LA
When an input voltage of 3.0 V or higher is
applied, the lead angle is clipped to a
maximum of 29°.
The LA pin should be left open when using
the automatic-lead-angle control. At this
time, the LA pin can be used for determining
the lead angle.
4
LA
100 Ω
200 kΩ
0 V: 0°
Input range: 0 to 4.4 V (Vrefout)
100 Ω
Lead angle control
input
Lower limit
Upper limit
& Automatic-lead
angle control input
2013-09-02
TB6585AFTG
Pin Description
Symbol
I/O Signal
Internal Circuit Diagram
Vrefout
Non-inverting amplifier
Gain control inputs
(Lead-angle
controller)
Gin−
25dB (max)
Gin+
Gout output voltage
Gout
Low: GND
100 Ω
Gin−
Vrefout
100 Ω
Vrefout
Gout
High: Vrefout − 0.4 V
100 Ω
Gin+
Peak-hold
circuitry
Vrefout
Peak-hold
(Lead-angle
controller)
PH
This pin is connected to a peak-hold
capacitor and a discharge resistor.
100 kΩ/0.1 µF
100 Ω
PH
100 Ω
Vrefout
Low-pass filter
(Lead-angle
controller)
This pin is connected to an RC filter
(low-pass filter) capacitor.
LPF
This pin has an internal resistor of 100 kΩ
(typ.).
100 Ω
LPF
100 Ω
0.1 µF
Vrefout
The lead angle is clipped to the lower limit.
Lead-angle
lower-limit control
LL
LL = 0 V to 4.4 V (Vrefout)
When LL > UL, LA is fixed to the value
determined by LL.
LL
100 Ω
Vrefout
The lead angle is clipped to the upper limit.
Lead-angle
upper-limit control
UL
UL = 0 V to 4.4 V (Vrefout)
When LL > UL, LA is fixed to the value
determined by LL.
5
UL
100 Ω
2013-09-02
TB6585AFTG
Symbol
Voltage output
converted from
output current
Internal Circuit Diagram
Vrefout
Restart operation
select input for the
anti-lock system
Digital
ML
L: 0.8 V (max)
H: 2.0 V (min)
100 Ω
100 kΩ
L: Restart with power
cycling
H: Automatic restart
I/O Signal
Analog
IV
Vrefout
60 kΩ
Pin Description
10 kΩ
IV
IV = 0.5 V to 3.5 V (±2 mA (max))
Gain = 1.2 (typ.)
Vrefout
Analog
Digital filter: 1 µs (typ.)
The gate block protection is activated when
RS reaches 0.5 V.
(Disabled every carrier cycle)
RS
200 kΩ
Comparator
0.5 V
RS
5 pF
Current-limiting input
VM
U-phase, V-phase
and W-phase outputs
U
Motor drive output
V
IOUT = 1.2 A (typ.) 1.8 A (max)
U, V, W
W
IR
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TB6585AFTG
Absolute Maximum Ratings (Ta = 25°C)
Characteristics
Symbol
Rating
Unit
Power supply voltage
VM
45
V
Input voltage
VIN
4.7
V
Output current
IOUT
1.8 (Note 1)
A
Power dissipation
PD
3.9 (Note 2)
W
Operating temperature
Topr
−30 to 85
Storage temperature
Tstg
−55 to 150
°C
Note 1: Output current may be limited by the ambient temperature or a heatsink.
The maximum junction temperature should not exceed Tjmax = 150°C.
Note 2: Measured on a board. (100 mm × 100 mm × t1.5 mm, Double-layers)
Package Power Dissipation
PD (W)
4.5
4
3.5
3
2.5
2
1.5
1
0.5
0
0
25
50
75
100
125
150
Ta (℃)
Measured on a board (100 mm × 100 mm × t1.5 mm, Double-layers) Rth (j-a) = 32°C/W
Operating Ranges (Ta = 25°C)
Characteristics
Power supply voltage
Oscillation frequency bandwidth
Symbol
Min
Typ.
Max
Unit
VM
4.5
24
42
V
FOSC
4
5
6
MHz
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TB6585AFTG
Electrical Characteristics (Ta = 25°C, VM = 24 V)
Characteristics
Symbol
Power supply current
In-phase input
voltage range
Hall
amplifier
Pre-drive current + control current,
Irefout = 0 mA
IM
Input current
Test Conditions
7
14
mA
22
40
Vin = 4.4 V VSP
30
60
Iin (3)
Vin = 4.4 V RESET, ML, CW/CCW
44
80
1.5
3.5
V
IinH
High
Vin
µA
50
mVpp
(Note)
±4
±8
±12
mV
VCMRH = 2.5 V, single phase
−1
1
µA
2.0
Vrefout
+0.2
0
0.8
CW/CCW, RESET, ML
Low
Input voltage
Unit
Vin = 4.4 V LA
VhysH
Input current
Max
Iin (1)
VH
Input hysteresis
Typ.
Iin (2)
VCMRH
Input voltage swing
Min
Vin Hys
CW/CCW, RESET, ML
0.2
VSP (4.4)
Modulated wave: max
Vrefout
− 0.2
Vrefout
+0.2
V
VSP (0.5)
Commutation OFF → Start motor operation
0.3
0.5
0.7
Output ON-resistance
RON (H+L)
IOUT = 1.2 A
U, V, W
0.7
1.0
Ω
Vrefout output voltage
Vrefout
Irefout = 20 mA
Vrefout
4.0
4.4
4.8
V
VFG (H)
IOUT = 1 mA
FG
VFG (L)
IOUT = −1 mA
FG
FG output voltage
Vrefout Vrefout
− 1.0
− 0.2
0.2
1.0
V
IL (H)
VOUT = 0 V
0
1
IL (L)
VOUT = 24 V
0
1
Current detection
VRS
RS
0.46
0.5
0.54
V
Input delay
TRS
RS → Output off
2.0
µs
2.25
2.3
V
−40
mV
Output leakage current
Gain-controlling amplifier for
lead-angle controller
Voltage error for lead-angle limit
control
PH output current for lead-angle
controller
AMPOUT
GOUT output current, IOUT = 5 mA, GIN = 0.2 V
GIN, GOUT: Gain = 12 (11 kΩ/1 kΩ)
AMPOFS
GIN, GOUT 11 kΩ/1 kΩ
∆L
LL = 0.7 V
−20
20
∆U
UL = 2.0 V
−30
30
PHOUT (0 mA)
PH output current, IOUT = 0 mA, GOUT = 2.4 V
2.35
2.4
2.45
PHOUT (5 mA)
PH output current, IOUT = 5 mA, GOUT = 2.4 V
1.9
LA = 0 V or Open, Hall IN = 100 Hz
0
LA = 1.5 V, Hall IN = 100 Hz
15
LA = 3 V, Hall IN = 100 Hz
29
TLA (0)
Lead angle correction
TLA (1.5)
TLA (3)
Automatic restart from motor
lock
TML(ON)
TML (OFF)
FTR
VM power supply monitor
PWM frequency
Thermal shutdown
Lock detection time
TR = 180 pF
500
Output off time ML = High
TR = 180 pF
500
Oscillation frequency
TR = 180 pF
1.5
2.0
2.5
VM (H)
Output start point
3.8
4.0
4.2
VM (L)
Output stop point
3.3
3.5
3.7
VH
Hysteresis width
0.5
FC (5M)
OSC/C = 150 pF
18
20
22
150
165
180
15
TSD
TSDhys
OSC/R = 16 kΩ
(Note)
Thermal shutdown hysteresis
µA
mV
V
°
ms
kHz
V
kHz
°C
Note: Product testing before shipment is not performed.
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TB6585AFTG
Functional Description
1. Basic Operation
At startup, the motor is driven by a square-wave commutation signal that is generated based on the position
detection signal. When the position detection signal exceeds the rotational frequency of f = 2.5 Hz, the rotor
position is determined by the position detection signal and the modulated wave signal is generated. Then,
the sine-wave PWM signal is generated by comparing the modulated wave signal with the triangular wave
signal to start a motor in PWM drive mode.
Startup to 2.5 Hz: Square-wave drive (120° commutation)
f = fosc/(213 × 41 × 6)
2.5 Hz or higher: Sine-wave PWM drive (180° commutation)
f ≈ 2.5 Hz when fosc = 5 MHz
2. Speed Control Input (VSP)
(1)
(2)
Speed control input: 0 V < VSP ≤ 0.5 V
The motor-driving output is turned off. (Motor is stopped.)
Speed control input: VSP > 0.5 V
When fosc = 5 MHz, the motor is driven by a square wave until f reaches 2.5 Hz. Then, the
motor-driving signal is switched to a sine-wave signal.
PWM Duty Cycle
100%
Triangular wave (carrier)
Vrefout
Modulated waveform
(1)
0V
0.5 V
(2)
Vrefout
GND
Vsp
Note: An amplitude of the modulated waveform becomes maximum when VSP = Vrefout. The PWM duty
cycle that is obtained with the VSP voltage of Vrefout is defined as 100%.
3. Carrier Frequency Setting
The frequency of the triangular wave (carrier frequency) required for the PWM signal generation is fixed at
the following value:
fc = fosc/252 (Hz), where fosc = Reference clock frequency (RC oscillator frequency)
Example: When fosc = 5 MHz, fc = 19.8 kHz
4. Lead Angle Correction
The lead angle of the motor driving signal generated in accordance with the induced voltage (Hall signal) is
corrected by an angle between 0 and 29°.
The lead angle control can be achieved by directly applying a voltage to the PA pin, or by using the motor
current.
5-bit AD
converter
LA
Automatic-lead-angle
controller
Modulated wave generator
Gin+
Lead angle 0.94°
LA = 0 V
LA = 90 mV (typ.)
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Lead angle 0°
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TB6585AFTG
Step
LA (V)
Lead angle
(°)
Step
LA (V)
Lead angle
(°)
1
0.00
0.00
17
1.50
15
2
0.09
0.94
18
1.59
15.94
3
0.19
1.88
19
1.69
16.88
4
0.28
2.81
20
1.78
17.81
5
0.38
3.75
21
1.88
18.75
6
0.47
4.69
22
1.97
19.69
7
0.56
5.63
23
2.06
20.63
8
0.66
6.56
24
2.16
21.56
9
0.75
7.5
25
2.25
22.50
10
0.84
8.44
26
2.34
23.44
11
0.94
9.38
27
2.44
24.38
12
1.03
10.31
28
2.53
25.31
13
1.13
11.25
29
2.63
26.25
14
1.22
12.19
30
2.72
27.19
15
1.31
13.13
31
2.81
28.13
16
1.41
14.06
32
2.91
29.06
LA (V) vs. Lead Angle (°) Characteristics
30
Lead Angle
(°)
25
20
15
10
5
0
0
0.35
0.7
1.05
1.4
1.75
2.1
2.45
2.8
3.15
LA (V)
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TB6585AFTG
IV pin
Motor current
RF
Peak
hold
Gain × VRF
5-bit
A/D converter
Leadangle
value
R1
R3
R2
Gain × VRF
(peak)
C1
Amp.
VRF
LA pin
*: Gain = (R1 + R2) /R1, R3 = 100 kΩ, C1 = 0.1 μF
V [v]
VRF
Gain × VRF
(peak)
Gain × VRF
Lead-angle value
T [s]
5. Position Detection (Hall effect input)
The in-phase input voltage range, VCMRH, is from 1.5 to 3.5 V. The input hysteresis, VH, is 8 mV (typ.).
VS
HUM
VH = 8 mV (typ.)
VH
VH
VS ≥ 50 mV
HUP
*: The Hall amplifier can operate when VS is at least 50mVpp. However, to stabilize the time interval between
zero-cross points of each phase signal, that is, the 60-electrical-degree interval, the amplitude should be as
high as possible. (VS is recommended to be 200 mVpp or higher.)
6. Rotation Pulse Output (FG output)
This pin generates a rotation pulse (3 pulses/electrical degree).
Example: With an eight-pole motor, 12 pulses are generated per revolution. (12 ppr)
7. Reverse Rotation Detection
The direction of the motor rotation is detected. The drive mode is then selected between 120° commutation
and 180° commutation modes.
The detection is performed at every electrical degree of 360°.
CW/CCW Pin
Low (CW)
High (CCW)
Actual Rotation Direction of the Motor
Commutation Mode
CW (clockwise)
180° commutation
CCW (counterclockwise)
120° commutation
CW (clockwise)
120° commutation
CCW (counterclockwise)
180° commutation
Note: When the Hall signal frequency is below 2.5 Hz, the TB6585AFTG is put in 120° commutation mode even
when 180° commutation mode is selected.
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TB6585AFTG
8. Various Protections
(1)
Overcurrent Protection (RS pin)
When a DC link current exceeds the internal reference voltage, output transistors are turned off. The
TB6585AFTG exits overcurrent protection mode every carrier cycle. Reference voltage = 0.5 V (typ.)
(2)
External RESET (RESET pin)
Output transistors are turned off when RESET is High; they are turned on again when RESET is Low
or Open.
The RESET pin is activated if any abnormality is detected externally.
(3)
Internal Protections
• Position Detection Fault Protection
When the position detection signals are all set to High or Low, output transistors are turned off.
Otherwise, the motor is restarted every carrier cycle.
Anti-lock capability
When the operation mode is not properly switched as configured from 120° commutation mode of
startup operation to 180° commutation mode, the motor is deemed to be locked and output
transistors are turned off. The restart operation can be selected from either the automatic restart
or the power cycling.
Hall U
Hall V
Hall W
ML
Motor-Lock detection
(If Hall signal
frequency continues
to be below 2.5 Hz)
Restart operation
selector
Pulse counter
(10 bits)
TR
C1
•
ML = High
Automatic restart
⇒Protection is
automatically
disabled using the
pulse counter
Drive output
controller
Restart with power cycling
⇒Protection is disabled by
turning off and back on the
VM power supply or VSP
ML = Low
The time required for the motor-lock detection and the time while the motor driving signal is
inactive can be adjusted by the external capacitor C1. (These periods are set to be the same.)
Time setting
C × Vth
× 1024 (s )
T= 1
I
I = 0.72 μA, Vth = 2 V
Example: When C1 = 180 pF, T ≈ 500 ms (typ.).
When the Hall signal frequency is kept below 2.5 Hz for at least 500 ms (typ.), the
TB6585AFTG becomes active and inactive periodically every 500 ms (typ.). The protection is
disabled when the Hall signal frequency reaches 2.5 Hz and the operation mode is switched to
180° commutation mode.
When the Hall signal frequency is kept below 2.5 Hz for at least 500 ms (typ.), output
transistors are disabled. The TB6585AFTG can be restarted by turning off and back on the VM
power supply, which must be kept below 3.5 V (typ.). The TB6585AFTG can also be restarted by
turning off and back on VSP, which must be kept below 0.5 V (typ.).
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TB6585AFTG
•
Undervoltage Protection (VM Power Supply Monitoring)
When the VM power supply is turned on or off, commutation signal outputs are disabled while VM
is outside the operating voltage range.
VM
Power supply voltage 4.0 V (typ.)
3.5 V (typ.)
GND
VM
Commutation signal
Output: Off
Output: On
Output: Off
Operation Flow
Position
signal
(hall sensor)
Position
detector
Counter
Phase alignment
Phase U
Phase V
Sine waveform
(modulated signal) Comparator
Output
power
transistors
(P-channel+
N-channel)
U-phase
Output
V-phase
Output
W-phase
Output
Phase W
Speed
control
(VSP)
CR
oscillation
System clock
generator
Triangular wave
(carrier frequency)
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TB6585AFTG
The modulated waveform is generated using the Hall signals. The sine-wave PWM signal is then generated
by comparing the modulated waveform with the triangular wave.
The time between the rising edges (falling edges) and the immediately-following falling edges (rising edges)
of any of the three Hall signals (interval of 60 electrical degrees) are calculated by the counter. This period is
used for data generation of the next 60-electrical-degree interval.
The modulated waveform of 60-electrical-degree interval consists of 32 data items. The time period for a
single data item is 1/32 of the previous 60-electrical-degree interval. The modulated waveform advances by
this period. (Operating waveforms when CW/CCW = Low)
HUP
(5)
(6)
(2)
*: Though the HUP, HVP and
HWP pins are Hall effect
inputs, they are indicated as
square waveforms for the
sake of simplicity.
HVP
(4)
(1)
HWP
(5)’
(6)’
(1)’
(2)’
SU
SV
Sw
As illustrated above, the modulated waveform ) (1)’advances by 1/32 of the period between the rising edge
(
) of HU and the falling edge (
) of HW. Likewise, the modulated waveform (2)’ advances by 1/32 of the
period between the falling edge (
) of HW and the rising edge (
) of HV.
If the next edge does not occur even after completing the generation of 32 data, data for the next
60-electrical-degree interval are generated based on the same time period until the next edge occurs.
*t
32
31
30
1
SU
2
3
4
5
6
(1)’
* t = t(1) × 1/32
32 data
Also, the phase alignment with the modulated waveform is performed at every zero-cross point. The
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TB6585AFTG
modulated waveform is reset by being synchronized with the rising and falling edges of the position
detection signal at every 60 electrical degrees. Therefore, the modulated waveform becomes discontinuous
at every reset if there occurs a zero-cross point error of the Hall signal, or when motor is being accelerated or
decelerated.
Also, the phase alignment with the modulated waveform is performed at every zero-cross point.
The modulated waveform is reset by being synchronized with the rising and falling edges of the position
detection signal (Hall amplifier output) at every 60 electrical degrees.
Therefore, if the next zero-cross point occurs before completing the generation of 32 data for
60-electrical-degree interval due to the zero-cross point error of the position detection signal, the current
data is reset and the data generation for the next 60-electrical-degree interval is then started.
In such cases, the modulated waveform is discontinuous at every reset.
HU
HV
HW
(1)
(2)
1
2
3
31
30
29
28
1
2
3
4
SU
Reset
(1)’
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TB6585AFTG
Modulated wave
Phase U
(inside
the IC)
Carrier frequency
Vrefout
(typ.)
GND
VM
Output waveform
Phase U
GND
VM
Phase V
GND
VM
Phase W
GND
Line voltage
VUV
(VU − VV)
PWM Signal Generation
(Inside the IC)
VSP input voltage
Carrier frequency
Output
Waveform
Phase U
VM
VM
2
GND
VM
VM
2
Phase V
GND
VM
VM
2
Phase W
GND
Note: The above U-phase waveform shows the behavior of the U-phase output signal when a resistor is connected
between the U and VM pins and also between the U pin and ground to obtain VM . Likewise, resistors are
2
connected to the V and W pins. VM indicates the high-impedance state.
2
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TB6585AFTG
Timing Chart of the Clockwise Rotation (CW/CCW = Low, LA = GND)
(Hall Signal Input for Clockwise Rotation)
HUM
HUP
HVM
HVP
HWP
HWM
0 < Hall signal frequency < 2.5 Hz
(120° commutation: inside the IC)
UH
VH
WH
UL
VL
WL
FG
2.5 Hz < Hall signal frequency
(180° commutation: Modulated wave inside the IC)
SU
SV
SW
FG
*: The lead-angle correction is performed in accordance with the LA input when the Hall signal frequency is 2.5 Hz or
higher.
The timing chart may be simplified for the sake of brevity.
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Timing Chart of the Clockwise Rotation (CW/CCW = Low, LA = GND)
(Hall Signal Input for Counterclockwise Rotation)
HUM
HUP
HVM
HVP
HWP
HWM
Reverse Rotation Detection
(120° commutation: inside the IC)
UH
VH
WH
UL
VL
WL
FG
*: If the Hall signal for counterclockwise rotation is applied when CW/CCW = Low, the motor is driven by the 120°
commutation signal with a lead angle of 0°. (Reverse rotation by the wind)
The timing chart may be simplified for the sake of brevity.
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Timing Chart of the Counterclockwise Rotation (CW/CCW = High, LA = GND)
(Hall Signal Input for Counterclockwise Rotation)
HUM
HUP
HVM
HVP
HWP
HWM
0 < Hall signal frequency < 5 Hz
(120° commutation: inside the IC)
UH
VH
WH
UL
VL
WL
FG
5 Hz < Hall signal frequency
(180° commutation: Modulated wave inside the IC)
SU
SV
SW
FG
*: The lead-angle correction is performed in accordance with the LA input when the Hall signal frequency is 2.5 Hz or
higher.
The timing chart may be simplified for the sake of brevity.
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Timing Chart of the Counterclockwise Rotation (CW/CCW = High, LA = GND)
(Hall Signal Input for Clockwise Rotation)
HUM
HUP
HVM
HVP
HWP
HWM
Reverse Rotation Detection
(120° commutation: inside the IC)
UH
VH
WH
UL
VL
WL
FG
*: If the Hall signal for clockwise rotation is applied when CW/CCW = High, the motor is driven by the 120°
commutation signal with a lead angle of 0°. (Reverse rotation by the wind)
The timing chart may be simplified for the sake of brevity.
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TB6585AFTG
Gin+ 48 Gin− 46 Gout 39
PH 37
Vrefout
0.1 μF
(100 kΩ)
Vrefout
0.1 μF
100 kΩ
（10 kΩ）
Block Diagram
LPF 36
IV 35 34 LA
UL 33
LL 32
LPF
Lower limit
30
16 kΩ
Vrefout
（Note1）
OSC/R
HUP
HUM
HVP
HVM
HWP
HWM
MCU
VSP
13
VM （Note 2）
7
22 μF
0.47 µF
150 pF
12
S-GND OSC/C
4.4 V power supply
System clock
generator
29
28
27
26
6
10
5
Sine-wave generator
9
4
U
V
W
15
CW/CCW 24
3
RESET 25
FG
0.001μF
（Note1）Vrefout
VM = 4.5 to 42 V
Upper limit
PH
8
3 ppr
1
Charge
pump
TR
22
180 pF
Predetermined number
of lock protection
TSD (165°C)
31
11,
2
ML
S-GND
P-GND
IR
RS
48 Pin
（Note 3）
Note 1: An oscillation prevention capacitor should be connected to the Vrefout pin at a location as close to the
TB6585AFTG as possible.
If the package’s thermal performance is not enough for the application, a load must not be connected to the
Vrefout output; instead, a voltage of 4.4 V must be applied externally to it.
Note 2: An oscillation prevention capacitor should be connected to the VM pin at a location as close to the
TB6585AFTG as possible.
Note 3: If there is a significant noise, an RC filter (low-pass filter) should be connected.
Note: A large current or voltage might be abruptly applied to the IC and peripherals in case of a short-circuit across
outputs, a short-circuit to power supply or a short-circuit to ground. This possibility should be fully considered in
the design of the output, VM, IR and ground lines. Also, care should be taken not to install the IC in the wrong
orientation. Otherwise, IC may be broken.
Note: The constants of loads that are connected externally to the IC shown in the above diagram are used as initial
values to determine whether the application operates properly. The capacitor values that are connected to VM,
Vrefout, and between positive and negative inputs of Hall elements must be determined experimentally.
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Package Dimensions
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Notes on Contents
1. Block Diagrams
Some of the functional blocks, circuits, or constants in the block diagram may be omitted or simplified for
explanatory purposes.
2. Equivalent Circuits
The equivalent circuit diagrams may be simplified or some parts of them may be omitted for explanatory
purposes.
3. Timing Charts
Timing charts may be simplified for explanatory purposes.
4. Application Circuits
The application circuits shown in this document are provided for reference purposes only. Thorough
evaluation is required, especially at the mass production design stage.
Toshiba does not grant any license to any industrial property rights by providing these examples of
application circuits.
5. Test Circuits
Components in the test circuits are used only to obtain and confirm the device characteristics. These
components and circuits are not guaranteed to prevent malfunction or failure from occurring in the
application equipment.
IC Usage Considerations
Notes on handling of ICs
(1)
The absolute maximum ratings of a semiconductor device are a set of ratings that must not be
exceeded, even for a moment. Do not exceed any of these ratings.
Exceeding the rating(s) may cause the device breakdown, damage or deterioration, and may result
injury by explosion or combustion.
(2)
Use an appropriate power supply fuse to ensure that a large current does not continuously flow in case
of over current and/or IC failure. The IC will fully break down when used under conditions that exceed
its absolute maximum ratings, when the wiring is routed improperly or when an abnormal pulse noise
occurs from the wiring or load, causing a large current to continuously flow and the breakdown can
lead smoke or ignition. To minimize the effects of the flow of a large current in case of breakdown,
appropriate settings, such as fuse capacity, fusing time and insertion circuit location, are required.
(3)
If your design includes an inductive load such as a motor coil, incorporate a protection circuit into the
design to prevent device malfunction or breakdown caused by the current resulting from the inrush
current at power ON or the negative current resulting from the back electromotive force at power OFF.
IC breakdown may cause injury, smoke or ignition.
Use a stable power supply with ICs with built-in protection functions. If the power supply is unstable,
the protection function may not operate, causing IC breakdown. IC breakdown may cause injury,
smoke or ignition.
(4)
Do not insert devices in the wrong orientation or incorrectly.
Make sure that the positive and negative terminals of power supplies are connected properly.
Otherwise, the current or power consumption may exceed the absolute maximum rating, and
exceeding the rating(s) may cause the device breakdown, damage or deterioration, and may result
injury by explosion or combustion.
In addition, do not use any device that is applied the current with inserting in the wrong orientation or
incorrectly even just one time.
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Points to Remember on Handling of ICs
(1)
Over current protection circuit
Over current protection circuits (referred to as current limiter circuits) do not necessarily protect ICs
under all circumstances. If the Over current protection circuits operate against the over current, clear
the over current status immediately.
Depending on the method of use and usage conditions, such as exceeding absolute maximum ratings
can cause the over current protection circuit to not operate properly or IC breakdown before operation.
In addition, depending on the method of use and usage conditions, if over current continues to flow for
a long time after operation, the IC may generate heat resulting in breakdown.
(2)
Thermal shutdown circuit
Thermal shutdown circuits do not necessarily protect ICs under all circumstances. If the thermal
shutdown circuits operate against the over temperature, clear the heat generation status immediately.
Depending on the method of use and usage conditions, such as exceeding absolute maximum ratings
can cause the thermal shutdown circuit to not operate properly or IC breakdown before operation.
(3)
Heat radiation design
In using an IC with large current flow such as power amp, regulator or driver, please design the device
so that heat is appropriately radiated, not to exceed the specified junction temperature (TJ) at any
time and condition. These ICs generate heat even during normal use. An inadequate IC heat radiation
design can lead to decrease in IC life, deterioration of IC characteristics or IC breakdown. In addition,
please design the device taking into considerate the effect of IC heat radiation with peripheral
components.
(4)
Back-EMF
When a motor rotates in the reverse direction, stops or slows down abruptly, a current flow back to the
motor’s power supply due to the effect of back-EMF. If the current sink capability of the power supply
is small, the device’s motor power supply and output pins might be exposed to conditions beyond
absolute maximum ratings. To avoid this problem, take the effect of back-EMF into consideration in
system design.
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RESTRICTIONS ON PRODUCT USE
• Toshiba Corporation, and its subsidiaries and affiliates (collectively "TOSHIBA"), reserve the right to make changes to the information
in this document, and related hardware, software and systems (collectively "Product") without notice.
• This document and any information herein may not be reproduced without prior written permission from TOSHIBA. Even with
TOSHIBA's written permission, reproduction is permissible only if reproduction is without alteration/omission.
• Though TOSHIBA works continually to improve Product's quality and reliability, Product can malfunction or fail. Customers are
responsible for complying with safety standards and for providing adequate designs and safeguards for their hardware, software and
systems which minimize risk and avoid situations in which a malfunction or failure of Product could cause loss of human life, bodily
injury or damage to property, including data loss or corruption. Before customers use the Product, create designs including the Product,
or incorporate the Product into their own applications, customers must also refer to and comply with (a) the latest versions of all
relevant TOSHIBA information, including without limitation, this document, the specifications, the data sheets and application notes for
Product and the precautions and conditions set forth in the "TOSHIBA Semiconductor Reliability Handbook" and (b) the instructions for
the application with which the Product will be used with or for. Customers are solely responsible for all aspects of their own product
design or applications, including but not limited to (a) determining the appropriateness of the use of this Product in such design or
applications; (b) evaluating and determining the applicability of any information contained in this document, or in charts, diagrams,
programs, algorithms, sample application circuits, or any other referenced documents; and (c) validating all operating parameters for
such designs and applications. TOSHIBA ASSUMES NO LIABILITY FOR CUSTOMERS' PRODUCT DESIGN OR APPLICATIONS.
• PRODUCT IS NEITHER INTENDED NOR WARRANTED FOR USE IN EQUIPMENTS OR SYSTEMS THAT REQUIRE
EXTRAORDINARILY HIGH LEVELS OF QUALITY AND/OR RELIABILITY, AND/OR A MALFUNCTION OR FAILURE OF WHICH
MAY CAUSE LOSS OF HUMAN LIFE, BODILY INJURY, SERIOUS PROPERTY DAMAGE AND/OR SERIOUS PUBLIC IMPACT
("UNINTENDED USE"). Except for specific applications as expressly stated in this document, Unintended Use includes, without
limitation, equipment used in nuclear facilities, equipment used in the aerospace industry, medical equipment, equipment used for
automobiles, trains, ships and other transportation, traffic signaling equipment, equipment used to control combustions or explosions,
safety devices, elevators and escalators, devices related to electric power, and equipment used in finance-related fields. IF YOU USE
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• Product shall not be used for or incorporated into any products or systems whose manufacture, use, or sale is prohibited under any
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• ABSENT A WRITTEN SIGNED AGREEMENT, EXCEPT AS PROVIDED IN THE RELEVANT TERMS AND CONDITIONS OF SALE
FOR PRODUCT, AND TO THE MAXIMUM EXTENT ALLOWABLE BY LAW, TOSHIBA (1) ASSUMES NO LIABILITY
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LOSS, INCLUDING WITHOUT LIMITATION, LOSS OF PROFITS, LOSS OF OPPORTUNITIES, BUSINESS INTERRUPTION AND
LOSS OF DATA, AND (2) DISCLAIMS ANY AND ALL EXPRESS OR IMPLIED WARRANTIES AND CONDITIONS RELATED TO
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products (mass destruction weapons). Product and related software and technology may be controlled under the applicable export
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Please use Product in compliance with all applicable laws and regulations that regulate the inclusion or use of controlled substances,
including without limitation, the EU RoHS Directive. TOSHIBA ASSUMES NO LIABILITY FOR DAMAGES OR LOSSES
OCCURRING AS A RESULT OF NONCOMPLIANCE WITH APPLICABLE LAWS AND REGULATIONS.
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