TB6556F/FG
2005-01-19
1
TOSHIBA Bi-CMOS Integrated Circuit Silicon Monolithic
TB6556F/FG
3-Phase Full-Wave Sine-Wave PWM Brushless Motor Controller
Features
Sine-wave PWM control
Built-in triangular-wave generator
(carrier cycle = f
osc
/252 (Hz))
Built-in lead angle control function (0 to 58 in 32 steps)
External setting/automatic internal setting
Built-in dead time function (setting 2.6 s or 3.8 s)
Supports bootstrap circuit
Overcurrent protection signal input pin
Built-in regulator (V
refout
= 5 V (typ.), 30 mA (max))
Operating supply voltage range: V
CC
= 6 V to 10 V
Weight: 0.33 g (typ.)
TB6556FG:
TB6556FG is a Pb-free product.
The following conditions apply to solderability:
*Solderability
1.
Use of Sn-63Pb solder bath
*solder bath temperature = 230C
*dipping time = 5 seconds
*number of times = once
*use of R-type flux
2.
Use of Sn-3.0Ag-0.5Cu solder bath
*solder bath temperature = 245C
*dipping time = 5 seconds
*the number of times = once
*use of R-type flux
TB6556F/FG
2005-01-19
2
Block Diagram
Phase V
System clock
generator
Position detector
Regulator
Counter
5-bit AD
6-bit triangular
wave generator
Output
waveform
generator
Data
select
Switching
120/180
and
gate block
protection
on/off
Setting
dead
time
Charger
120-
turn-on
matrix
Power-on
reset
Protection
&
reset
14
15
21
20
19
2
1
13
23
11
3
18
17
16
12
4
7
5
8
6
9
10
Phase
matching
FG
Rotating
direction
ST/SP
CW/CCW
ERR
GB
Comparator
Comparator
Comparator
Comparator
PWM
HU
HV
HW
120/180
Phase W
Phase U
X
in
X
out
HU
HV
HW
V
e
V
CC
GND
V
refout
RES
I
dc
CW/CCW
FG
EV
Td
PH
U
X
V
Y
W
Z
OS
Internal
reference
voltage
SS
Peak hold
Filter
+
25
24
26
27
LA
28
Lower limit
Upper limit
30
29
G
in
G
out
LPF
LL
UL
22
TB6556F/FG
2005-01-19
3
Pin Description
Pin No.
Symbol
Description
Remarks
21
HU
Positional signal input pin U
20
HV
Positional signal input pin V
19
HW
Positional signal input pin W
When positional signal is HHH or LLL, gate block protection operates.
With built-in pull-up resistor, built-in digital filter (
-
500 ns)
18 CW/CCW
Rotation direction signal input
pin
L: Forward
H: Reverse
11 RES
Reset-signal-input
pin
L: Reset (output is non-active)
operation/halt operation, also used for gate protection,
built-in pull-up resistor
2 V
e
Voltage command signal
With built-in pull-down resistor
24 G
in
25 G
out
Gain setting
I
dc
signal level at a gain that optimizes the LA
26 PH
Peak
hold
Connect the peak-hold capacitor and discharge resistor to GND, parallel
to each other
27
LPF
RC low-pass filter
Connect the low-pass filter capacitor (built-in 100 k
resistor)
28 LA
Lead angle setting signal
input pin
Sets 0 to 58 in 32 steps
29
LL
Lower limit for LA
Set lower limit for LA (LL
=
0 V to 5.0 V)
30
UL
Upper limit for LA
Set upper limit for LA (UL
=
0 V to 5.0 V)
12 OS
Inputs output logic select
signal
L: Active LOW
H: Active HIGH
3 I
dc
Inputs overcurrent protection
signal
Inputs DC link current.
Reference voltage: 0.5 V
With built-in filter (
-
1
s), built-in digital filter (
-
1
s)
14 X
in
Inputs clock signal
15 X
out
Outputs
clock
signal
With built-in feedback resistor
23 V
refout
Outputs reference voltage
signal
5 V (typ.), 30 mA (max)
17
FG
FG signal output pin
Outputs 3 PPR of positional signal
16 REV
Reverse rotation detection
signal
Detects reverse rotation.
9
U
Outputs turn-on signal
8
V
Outputs turn-on signal
7
W
Outputs turn-on signal
6
X
Outputs turn-on signal
5
Y
Outputs turn-on signal
4
Z
Outputs turn-on signal
Select active HIGH or active LOW using the output logic select pin.
1 V
CC
Power supply voltage pin
V
CC
=
6 to 10 V
10
Td
Inputs setting dead time
L: 3.8
s, H or OPEN: 1.9
s
22 SS
120
/180
select signal
L: 120
turn-on mode, H or OPEN: 180
turn-on mode
13 GND
Ground
pin
TB6556F/FG
2005-01-19
4
Input/Output Equivalent Circuits
Pin Description
Symbol
Input/Output Signal
Input/Output Internal Circuit
Positional signal input pin U
Positional signal input pin V
Positional signal input pin W
HU
HV
HW
Digital
With Schmitt trigger
Hysteresis 300 mV (typ.)
Digital filter: 500 ns (typ.)
L: 0.8 V (max)
H: V
refout
-
1 V (min)
Forward/reverse switching
input pin
L: Forward (CW)
H: Reverse (CCW)
CW/CCW
Digital
L: 0.8 V (max)
H: V
refout
-
1 V (min)
Reset input
L: Stops operation (reset)
H: Operates
RES
Digital
L: 0.8 V (max)
H: V
refout
-
1 V (min)
120
/180
select signal
L: 120
turn-on mode
H: 180
turn-on mode
(OPEN)
SS
Digital
With Schmitt trigger
Hysteresis: 300 mV (typ.)
L: 0.8 V (max)
H: V
refout
-
1 V (min)
Voltage command signal
1.0 V
<
Ve
2.1 V
Refresh operation
(X, Y, Z pins: ON duty of
8%)
V
e
Analog
Input voltage range 0 to 5.4 V
Input voltage of 5.4 V or higher is
clipped to 5.4 V.
V
CC
150 k
100
V
refout
V
refout
200 k
2.0 k
V
refout
V
refout
200 k
2.0 k
V
refout
V
refout
100 k
2.0 k
V
refout
V
refout
100 k
2.0 k
TB6556F/FG
2005-01-19
5
Pin Description
Symbol
Input/Output Signal
Input/Output Internal Circuit
Lead angle setting signal
input pin
0 V: 0
5 V: 58
(5-bit AD)
LA
When LA is fixed externally, connect
LL to GND and UL to V
refout
, and then
input the setting voltage to the LA pin.
Input voltage range: 0 V to 5.0 V
(V
refout
)
Input voltage of V
refout
or higher is
clipped to V
refout
.
When LA is fixed automatically, open
the LA pin. In this state, the LA pin is
used only for confirmation of LA width.
Gain setting signal input
(LA setting)
G
in
G
out
Non-inverted amplifier
25 dB (max)
G
out
output voltage
LOW: GND
HIGH: V
CC
-
1.7 V
Peak hold
(LA setting)
PH
Connect the peak-hold capacitor and
discharge resistor to GND, parallel to
each other.
100 k
/0.1
F recommended
Low-pass filter
(LA setting)
LPF
Connect the low-pass filter capacitor
(built-in 100 k
resistor)
0.1
F recommended
Lower limit for LA
LL
Clip lower limit for LA
LL
=
0 V to 5.0 V
When LL
>
UL, LA is fixed at LL value.
V
CC
100
100
V
CC
100 k
100
100
V
CC
V
CC
2
00 k
V
CC
2
00 k
100
Automatic LA
circuit
V
CC
V
CC
G
in
G
out
I
dc
To peak
hold circuit
100
TB6556F/FG
2005-01-19
6
Pin Description
Symbol
Input/Output Signal
Input/Output Internal Circuit
Upper limit for LA
UL
Clip upper limit for LA
UL
=
0 V to 5.0 V
When LL
>
UL, LA is fixed at LL value.
Setting dead time input pin
L: 3.8
s
H or OPEN: 1.9
s
Td
Digital
L: 0.8 V (max)
H: V
refout
-
1 V (min)
Output logic select signal
input pin
L: Active LOW
H: Active HIGH
OS
Digital
L: 0.8 V (max)
H: V
refout
-
1 V (min)
Overcurrent protection
signal input pin
I
dc
Analog
Digital filter: 1
s (typ.)
Gate protected at 0.5 V or higher
(released at carrier cycle)
Clock signal input pin
X
in
Clock signal output pin
X
out
Operating range
2 MHz to 8 MHz (crystal oscillation)
360 k
V
refout
V
refout
X
out
X
in
V
refout
V
refout
100 k
2 k
V
refout
V
refout
100 k
2 k
V
CC
0.
5
V
200 k
5 p
F
Comparator
G
out
G
in
100
100
V
CC
TB6556F/FG
2005-01-19
7
Pin Description
Symbol
Input/Output Signal
Input/Output Internal Circuit
Reference voltage signal
output pin
V
refout
5
0.5 V (max 30 mA)
Reverse-rotation-detection
signal output pin
REV
Digital
Push-pull output:
1 mA (max)
FG signal output pin
FG
Digital
Push-pull output:
1 mA (max)
Turn-on signal output pin U
Turn-on signal output pin V
Turn-on signal output pin W
Turn-on signal output pin X
Turn-on signal output pin Y
Turn-on signal output pin Z
U
V
W
X
Y
Z
Analog
Push-pull output:
2 mA (max)
L: 0.78 V (max)
H: V
refout
-
0.78 V (min)
V
refout
V
refout
100
V
refout
V
refout
100
V
CC
V
CC
V
CC
V
refout
100
TB6556F/FG
2005-01-19
8
Maximum Ratings
(Ta
=
25C)
Characteristics Symbol Rating Unit
Supply voltage
V
CC
12 V
V
in (1)
-
0.3~V
CC
(Note 1)
Input voltage
V
in (2)
-
0.3~V
refout
+
0.3 (Note 2)
V
Turn-on signal output current
I
OUT
2
mA
Power dissipation
P
D
1.50
(Note
3)
W
Operating temperature
T
opr
-
30~115 (Note
4)
C
Storage temperature
T
stg
-
50~150 C
Note 1: V
in (1)
pin: V
e
, LA, G
in
, G
out
, PH, LPF, LL, UL
Note 2: V
in (2)
pin: HU, HV, HW, CW/CCW, RES, OS, I
dc
, Td, SS
Note 3: When mounted on PCB (universal 50
50
1.6 mm, Cu 30%)
Note 4: Operating temperature range is determined by the P
D
-
Ta characteristic.
Recommended Operating Conditions
(Ta
=
25C)
Characteristics Symbol
Min
Typ.
Max
Unit
Supply voltage
V
CC
6
7
10
V
Crystal oscillation frequency
X
in
2 4 8
MHz
Ambient temperature Ta (C)
P
D
Ta
Po
wer
di
ssi
p
a
ti
on P
D
(
W
)
0
0
2.0
(1) When mounted on PCB
Universal
50
50
1.6 mm
(2) IC only
Rth (j-a)
=
110C/W
1.5
1.0
0.5
50 100 150 200
(2)
(1)
TB6556F/FG
2005-01-19
9
Electrical Characteristics
(Ta
=
25C, V
CC
=
7 V)
Characteristics Symbol
Test
Circuit
Test Condition
Min
Typ.
Max
Unit
Supply current
I
CC
V
refout
=
open
5 8 mA
I
in (1)
-1 V
in
=
5 V LA
25 50
I
in (1)
-2 V
in
=
5 V V
e
35 70
I
in (2)
-1 V
in
=
0 V HU, HV, HW, SS
-
50
-
25
Input current
I
in (2)
-2
V
in
=
0 V CW/CCW, OS, Td, RES
-
100
-
50
A
HIGH
V
refout
-
1
V
refout
V
in
LOW
HU, HV, HW, CW/CCW, RES, OS, Td, SS
0.8
V
H
PWM Duty 100%
5.1
5.4
5.7
M Refresh
Start motor operation
1.8
2.1
2.4
Input voltage
V
e
L
Turned-off
Refresh
0.7 1.0 1.3
V
Input hysteresis
voltage
V
H
HU, HV, HW, SS
(Note 5)
0.3
V
V
DT
HU, HV, HW
X
in
=
4.19 MHz
0.5
Input delay time
V
DC
Idc X
in
=
4.19 MHz
1.0
s
V
OUT (H)-1
I
OUT
=
2 mA
U, V, W, X, Y, Z
V
refout
-
0.78
V
refout
-
0.3
V
OUT (L)-1
I
OUT
=
-
2 mA
U, V, W, X, Y, Z
0.3 0.78
V
REV (H)
I
OUT
=
1 mA
REV
V
refout
-
1.0
V
refout
-
0.2
V
REV (L)
I
OUT
=
-
1 mA
REV
0.2 1.0
V
FG (H)
I
OUT
=
1 mA
FG
V
refout
-
1.0
V
refout
-
0.2
V
FG (L)
I
OUT
=
-
1 mA
FG
0.2 1.0
Output voltage
V
refout
I
OUT
=
30 mA
V
refout
4.5 5.0 5.5
V
I
L (H)
V
OUT
=
0 V
U, V, W, X, Y, Z
0 10
Output leakage
current
I
L (L)
V
OUT
=
3.5 V
U, V, W, X, Y, Z
0 10
A
T
OFF (H)
Td
=
HIGH or OPEN, X
in
=
4.19 MHz,
I
OUT
=
2 mA, OS
=
HIGH/LOW
1.5 1.9
Output off-time by
upper/lower transistor
(Note 6)
T
OFF (L)
Td
=
LOW, X
in
=
4.19 MHz,
I
OUT
=
2 mA, OS
=
HIGH/LOW
3.0 3.8
s
Overcurrent detection
V
dc
I
dc
0.46
0.5
0.54
V
AMP
OUT
G
OUT
output current
5
mA
LA gain setting amp
AMP
OFS
G
IN
, G
OUT
11 k
/1 k
-4
0
mV
L LL
=
0.7 V
-
20
20
LA limit setting
difference
U
UL
=
2.0 V
-
20
20
mV
LA peak hold output
current
PH
OUT
PH output current
5 mA
T
LA (0)
LA
=
0 V or OPEN, Hall IN
=
100 Hz
0
T
LA (2.5)
LA
=
2.5 V, Hall IN
=
100
Hz
27.5 32 34.5
Lead angle correction
T
LA (5)
LA
=
5 V, Hall IN
=
100 Hz
53.5
59
62.5
V
CC
(H)
Output start operation point
4.2
4.5
4.8
V
CC
(L)
No output operation point
3.7
4.0
4.3
V
CC
monitor
V
H
Input
hysteresis
width
0.5
V
Note 5: Toshiba does not implement testing before shipping.
TB6556F/FG
2005-01-19
10
Note 6: T
OFF
OS
=
HIGH
OS
=
LOW
0.78 V
0.78 V
T
OFF
T
OFF
0.78 V
0.78 V
Turn-on signal (U, V, W)
Turn-on signal (X, Y, Z)
V
refout
-
0.78 V
T
OFF
Turn-on signal (U, V, W)
Turn-on signal (X, Y, Z)
T
OFF
V
refout
-
0.78 V
V
refout
-
0.78 V
V
refout
-
0.78 V
TB6556F/FG
2005-01-19
11
Functional Description
1. Basic
operation
The motor is driven by the square-wave turn-on signal based on a positional signal. When the positional
signal reaches number of rotations f
= 5 Hz or higher, the rotor position is estimated according to the
positional signal and a modulation wave is generated. The modulation wave and the triangular wave are
compared; then the sine-wave PWM signal is generated and the motor is driven.
From start to 5 Hz: When driven by square wave (120 turn-on) f
= f
osc
/(2
12
32 6)
5 Hz~: When driven by sine-wave PWM (180 turn-on); when f
osc
= 4 MHz, approx. 5 Hz
2. Select
drive
function
This function can select drive mode.
SS pin
HIGH or OPEN = Sine-wave PWM drive (180
turn-on mode)
LOW = Square-wave drive (120
turn-on mode)
Note: If the position sensing signal is f = 5 Hz or lower, the driver is 120
turn-on mode even when SS =
HIGH.
3. V
e
voltage command signal function and function to stabilize bootstrap voltage
(1)
When the voltage command signal is input at V
e
<
= 1.0 V:
Turns off output (gate protection)
(2)
When the voltage command signal is input at 1.0 V
< Ve <= 2.1 V:
Turns on the lower transistor at the regular (carrier) cycle. (ON duty is approx. 8%.)
(3)
When the voltage command signal is input at Ve
> 2.1 V:
During sin-wave drive, outputs drive signal as it is. During square-drive, forcibly turns on the lower
transistor at regular (carrier) cycle. (ON duty is approx. 8%)
Note: At startup, turn the lower transistor on for a fixed time with 1.0 V
<
Ve
<
=
2.1 V to charge the upper
transistor gate power supply.
4. Dead time function: upper/lower transistor output off-time
When the motor is driven by sine-wave PWM, dead time is digitally generated in the IC to prevent a
short circuit caused by the simultaneous turning on of upper and lower external power devices. When a
square wave is generated in full-duty cycle mode, the dead time function is turned on to prevent a short
circuit.
Td Pin
Internal Counter
T
OFF
HIGH or OPEN
8/f
osc
1.9
s
LOW 16/f
osc
3.8
s
T
OFF
values above are obtained when fosc
= 4.19 MHz.
f
osc
= reference clock (crystal oscillation)
(1)
(2) (3)
100%
2.1 V
1.0 V
5.4 V
Ve
PWM Duty
TB6556F/FG
2005-01-19
12
5. Correcting the lead angle
The lead angle can be corrected in the turn-on signal range from 0 to 58 in relation to the induced
voltage.
Analog input from LA pin (0 V to 5 V divided by 32):
0 V
= 0
5 V
= 58 (when more than 5 V is input, 58)
6. Setting the carrier frequency
This function sets the triangular wave cycle (carrier cycle) necessary for generating the PWM signal.
(The triangular wave is used for forcibly turning on the lower transistor when the motor is driven by
square wave.)
Carrier cycle
= f
osc
/252 (Hz) f
osc
= reference clock (crystal oscillation)
7. Switching the output of the turn-on signal
This function switches the output of the turn-on signal between HIGH and LOW.
Pin OS:
HIGH
= active HIGH
LOW
= active LOW
8.
Outputting the reverse rotation detection signal
This function detects the motor rotation direction every electrical angle of 360. (The output is HIGH
immediately after reset.)
The REV terminal increases with a 180 turn-on mode during LOW.
CW/CCW Pin
Actual Motor Rotating Direction
REV Pin
CW (forward)
LOW
LOW (CW)
CCW (reverse)
HIGH
CW (forward)
HIGH
HIGH (CCW)
CCW (reverse)
LOW
9. Protecting
input
pin
1.
Overcurrent protection (Pin I
dc
)
When the DC-link-current exceeds the internal reference voltage, performs gate block protection.
Overcurrent protection is released for each carrier frequency.
Reference voltage
= 0.5 V (typ.)
2.
Gate protection (Pin RES)
Output is turned off when the input signal is LOW, restarted when the input signal is HIGH.
The abnormality is detected externally and the signal input to pin RES.
RES Pin
OS Pin
Output Turn-on Signal
(U, V, W, X, Y, Z)
LOW HIGH
LOW
HIGH LOW
(When RES
= LOW, bootstrap capacitor charging stops.)
TB6556F/FG
2005-01-19
13
3.
Internal protection
Positional signal abnormality protection
Output is turned off when the positional signal is HHH or LLL; otherwise, it is restarted.
Low power supply voltage protection (V
CC
monitor)
For power supply on/off outside the operating voltage range, the turn-on signal output is kept at
high impedance outside the operating voltage range to prevent damage caused by power device
short circuits.
However, if the voltage level is supplied from the V
e
pin, this function is restricted, e.g., when V
e
>
4.9 V is applied, low power supply voltage protection does not operate.
Output at high impedance
Turn-on signal
Power supply
voltage
4.5 V (typ.)
4.0 V (typ.)
GND
V
M
V
CC
Output at high impedance
Output
TB6556F/FG
2005-01-19
14
Operation Flow
Note: Output ON time is decreased by the dead time
(carrier frequency
92%
-
T
d
2)
Sine-wave pattern
(modulation signal)
Triangular wave
(carrier frequency)
Position
detector
Counter
System clock
generator
Phase matching
Positional signal
(Hall IC)
Voltage
instruction
Oscillator
Comparator
Phase
W
Phase V
Phase U
U
X
V
Y
W
Z
Voltage command signal V
e
Driven by sine wave
M
o
dulat
ion
rat
i
o
(m
od
ulat
ion
s
i
g
nal)
2.1 V (typ.)
100%
5.4 V (typ.)
0
Voltage command signal V
e
Driven by square wave
O
u
tp
u
t
O
N
d
u
t
y
(
U
,
V
,
W)
2.1 V (typ.)
92%
(Note)
5.0 V (typ.)
TB6556F/FG
2005-01-19
15
The modulation waveform is generated using Hall signals. The modulation waveform is then compared
with the triangular wave and a sine-wave PWM signal is generated.
The time (electrical degrees: 60) from the rising (or falling) edges of the three Hall signals to the next
falling (or rising) edges is counted. The counted time is used as the data for the next 60 phase of the
modulation waveform.
There are 32 items of data for the 60 phase of the modulation waveform. The time width of one data
item is 1/32 of the time width of the 60 phase of the previous modulation waveform. The modulation
waveform moves forward by the width.
In the above diagram, the modulation waveform (1)' data moves forward by the 1/32 time width of the
time (1) from HU:
to HW: . Similarly, data (2)' moves forward by the 1/32 time width of the time (2) from
HW:
to HV: .
If the next edge does not occur after the 32 data items end, the next 32 data items move forward by the
same time width until the next edge occurs.
The modulation wave is brought into phase with every zero-cross point of the Hall signal.
The modulation wave is reset in synchronization with the rising and falling edges of the Hall signal at
every 60 electrical angle. Thus, when the Hall device is not placed at the correct position or during
acceleration and deceleration, the modulation waveform is not continuous at every reset.
*
t
S
V
(1)'
1
2
3
4
5
6
30
31
32
32
data items
*
t
*
t
=
t(1)
1/32
HU
HV
HW
S
U
S
V
Sw
'
'
'
'
*
HU, HV, HW: Hall signals
TB6556F/FG
2005-01-19
16
Timing Charts
Hall signal
(input)
H
u
H
v
H
w
FG signal
(output)
FG
Turn-on signal
when driven
by square wave
(output)
U
V
W
X
Y
Z
S
u
S
v
S
w
Modulation
waveform when
driven by sine wave
(inside of IC)
Forward
H
u
H
v
H
w
FG signal
(output)
FG
U
W
X
Y
Z
S
u
S
v
S
w
Hall signal
(input)
V
Reverse
Turn-on signal
when driven
by square wave
(output)
Modulation
waveform when
driven by sine wave
(inside the IC)
TB6556F/FG
2005-01-19
17
Operating Waveform When Driven by Square Wave
(CW/CCW
=
LOW, OS
=
HIGH)
To stabilize the bootstrap voltage, the lower outputs (X, Y, and Z) are always turned on at the carrier cycle
even during off time. At that time, the upper outputs (U, V, and W) are assigned dead time and turned off
at the timing when the lower outputs are turned on. (T
d
varies with input V
e.
)
Carrier cycle
= f
osc
/252 (Hz)
Dead time: T
d
= 16/f
osc
(s) (In more than V
e
= 5.0 V)
T
ONL
= carrier cycle 8% (s) (Uniformity)
When the motor is driven by a square wave, acceleration or deceleration is determined by voltage V
e
. The
motor accelerates or decelerates according to the ON duty of T
ONU
. (See the diagram of output ON duty on
page 14.)
Note: At startup, the motor is driven by a square wave when the Hall signals are 5 Hz or lower (f
osc
=
4 MHz) and
the motor is rotating in the reverse direction to that of the TB6556F/FG controlling it (REV
=
HIGH).
Hall signal
H
U
H
V
H
W
Enlarged
waveform
U
X
V
Y
W
Z
Output waveform
T
ONU
T
ONL
T
d
W
Z
T
d
TB6556F/FG
2005-01-19
18
Operating Waveform When Driven by Sine-Wave PWM
(CW/CCW
=
LOW, OS
=
HIGH)
When driven by a sine wave, the motor is accelerated or decelerated according to the ON duty of T
ONU
as
the amplitude of the modulation symbol changes according to voltage V
e
. (See the diagram of the output
ON duty on page 14.)
Triangular wave frequency
= carrier frequency = f
osc
/252 (Hz)
Note: At startup, the motor is driven by a sine wave when the Hall signals are 5 Hz or higher (f
osc
=
4 MHz) and the
motor is rotating in the same direction as the TB6556F/FG controlling it (REV
=
LOW).
Generation inside of IC
Phase V
Phase U
Phase W
Modulation signal
Triangular wave (carrier frequency)
V
UV
(U-V)
V
VW
(V-W)
V
WU
(W-U)
Inter-line voltage
Output waveform
U
X
V
Y
W
Z
TB6556F/FG
2005-01-19
19
Example of Application Circuit
Note 1: Connect to ground as necessary to prevent IC malfunction due to noise.
Note 2: Connect GND to signal ground on the application circuit.
Note 3: The device may be damaged by short circuits between outputs or between output and supply or ground. Peripheral parts may also be damaged by overvoltage and overcurrent. Design the output lines, V
CC
and GND
lines to ensure that no short circuits occur.
Be careful also not to insert the IC in the wrong direction since this may destroy the IC.
X
in
X
out
HU
HV
HW
V
e
V
CC
GND
RES
I
dc
CW/CCW
SS
FG
Td
U
X
V
Y
W
Z
OS
MCU
Power
supply
Hall IC signal
(Note 1)
(Note 1)
Pre-driver
(charge
pump)
M
Driver
6
to
1
0
V
System clock
generator
Position detector
Counter
5-bit AD
Triangular wave
generator 6-bit
Output
waveform
generator
Selecting
data
Switching
120/180 &
gate block
protection
on/off
Setting
dead time
Charger
120-
turn-on
matrix
Power-on
reset
Protection
&
reset
14
15
21
20
19
22
13
11
3
18
17
16
12
4
7
5
8
6
9
10
Phase
matching
FG
Rotating
direction
ST/SP
CW/CCW
ERR
GB
Comparator
Comparator
Comparator
Comparator
PWM
HU
HV
HW
120/180
Phase W
Phase U
REV
PH
Phase V
Internal
reference
voltage
2
Peak hold
Filter
+
25
24
26
27
LA
28
Lower limit
Upper limit
30
29
G
in
G
out
LPF
V
refout
23
V
refout
V
refout
UL
LL
Regulator
1
R2
R1
G
=
1
+
(R2/R1)
TB6556F/FG
2005-01-19
20
Package Dimensions
Weight: 0.63 g (typ.)
TB6556F/FG
2005-01-19
21
Notes on contents
1. Block Diagrams
Some of the functional blocks, circuits, or constants may be omitted or simplified in the block diagram 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. Maximum Ratings
The absolute maximum ratings of a semiconductor device are a set of specified parameter values that must not
be exceeded during operation, even for an instant.
If any of these ratings are exceeded during operation, the electrical characteristics of the device may be
irreparably altered, in which case the reliability and lifetime of the device can no longer be guaranteed.
Moreover, any exceeding of the ratings during operation may cause breakdown, damage and/or degradation in
other equipment. Applications using the device should be designed so that no maximum rating will ever be
exceeded under any operating conditions.
Before using, creating and/or producing designs, refer to and comply with the precautions and conditions set
forth in this document.
5. Application Circuits
The application circuits shown in this document are provided for reference purposes only. Thorough evaluation
is required in the mass production design phase.
In furnishing these examples of application circuits, Toshiba does not grant the use of any industrial property
rights.
6. Test Circuits
Components in test circuits are used only to obtain and confirm device characteristics. These components and
circuits are not guaranteed to prevent malfunction or failure in application equipment.
Handling of the IC
Ensure that the product is installed correctly to prevent breakdown, damage and/or degradation in the product
or equipment.
Over-current protection and heat protection circuits
These protection functions are intended only as a temporary means of preventing output short circuits or other
abnormal conditions and are not guaranteed to prevent damage to the IC.
If the guaranteed operating ranges of this product are exceeded, these protection features may not operate
and some output short circuits may result in the IC being damaged.
The over-current protection feature is intended to protect the IC from temporary short circuits only.
Short circuits persisting over long periods may cause excessive stress and damage the IC. Systems should
be configured so that any over-current condition will be eliminated as soon as possible.
Counter-electromotive force
When the motor reverses or stops, the effect of counter-electromotive force may cause the current to flow to the
power source.
If the power supply is not equipped with sink capability, the power and output pins may exceed the maximum
rating.
The counter-electromotive force of the motor will vary depending on the conditions of use and the features of
the motor. Therefore make sure there will be no damage to or operational problem in the IC, and no damage to
or operational errors in peripheral circuits caused by counter-electromotive force.
TB6556F/FG
2005-01-19
22
The information contained herein is subject to change without notice.
The information contained herein is presented only as a guide for the applications of our products. No
responsibility is assumed by TOSHIBA for any infringements of patents or other rights of the third parties which
may result from its use. No license is granted by implication or otherwise under any patent or patent rights of
TOSHIBA or others.
TOSHIBA is continually working to improve the quality and reliability of its products. Nevertheless, semiconductor
devices in general can malfunction or fail due to their inherent electrical sensitivity and vulnerability to physical
stress. It is the responsibility of the buyer, when utilizing TOSHIBA products, to comply with the standards of
safety in making a safe design for the entire system, and to avoid situations in which a malfunction or failure of
such TOSHIBA products could cause loss of human life, bodily injury or damage to property.
In developing your designs, please ensure that TOSHIBA products are used within specified operating ranges as
set forth in the most recent TOSHIBA products specifications. Also, please keep in mind the precautions and
conditions set forth in the "Handling Guide for Semiconductor Devices," or "TOSHIBA Semiconductor Reliability
Handbook" etc..
The TOSHIBA products listed in this document are intended for usage in general electronics applications
(computer, personal equipment, office equipment, measuring equipment, industrial robotics, domestic appliances,
etc.). These TOSHIBA products are neither intended nor warranted for usage in equipment that requires
extraordinarily high quality and/or reliability or a malfunction or failure of which may cause loss of human life or
bodily injury ("Unintended Usage"). Unintended Usage include atomic energy control instruments, airplane or
spaceship instruments, transportation instruments, traffic signal instruments, combustion control instruments,
medical instruments, all types of safety devices, etc.. Unintended Usage of TOSHIBA products listed in this
document shall be made at the customer's own risk.
The products described in this document are subject to the foreign exchange and foreign trade laws.
TOSHIBA products should not be embedded to the downstream products which are prohibited to be produced
and sold, under any law and regulations.
030619EBA
RESTRICTIONS ON PRODUCT USE
PDF 
ZIP