TB6634FNG
TOSHIBA Bi-CMOS Integrated Circuit Silicon Monolithic
TB6634FNG
3-Phase Full-Wave Sine-Wave PWM Brushless Motor Controller
The TB6634FNG is designed for motor fan applications for
three-phase brushless DC (BLDC) motors.
Features
•
•
•
•
•
•
•
•
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Sine-wave PWM control
Triangular-wave generator
(with a carrier frequency of f
OSC
/252 Hz)
Lead angle control (0° to 58° in 32 separate steps)
Lead angle external setting or automatic internal control
Current-limiting input pin
Weight: 0.17 g (typ.)
Voltage regulator (V
refout
= 5 V (typ.), 30 mA (max))
Motor restrained detection
Operating supply voltage range: V
CC
= 6 V to 16.5 V
Motor supply voltage detection
© 2014 TOSHIBA Corporation
1
2015-4-3
TB6634FNG
Pin Description
Pin No.
1
2
3
4
5
6
7
Symbol
Z
Y
X
W
V
U
RES
Function
Commutation signal output,
Z (low-side of W-phase )
Commutation signal output,
Y (low-side of V-phase)
Commutation signal output,
X (low-side of U-phase)
Commutation signal output,
W (high-side of W-phase)
Commutation signal output,
V (high-side of V-phase)
Commutation signal output,
U (high-side of U-phase)
Abnormal detection input
H: Runs the motor
L: Stops the motor. (The commutation output signals are forced Low.)
The RES input has an internal pull-down resistor.
Adjusting the number of steps addition of the lead angle by input voltage (2-bit AD)
Over voltage detection
Hysteresis: ± 0.1 V (typ.)
3.9 V (typ.) or less: Runs the motor.
4.1 V (typ.) or more: Stops the motor (The commutation output signals are forced Low).
Ratio of the driving term and the stopping term: 1:6.
The DC-link current is applied to the Idc input. The reference voltage is 0.3 V. The Idc
input has an internal RC filter and a digital filter.
The G
IN
and G
OUT
pins are used to amplify the Idc level so that the lead angle will be
optimal.
A peak-hold capacitor and a discharge resistor are connected to this pin.
Connecting the capacitor for RC low pass filter (Built-in resistance of 100 kΩ)
0° to 58° in 32 separate steps.
Setting upper limit of the lead angle (UL = 0 V to 5.0 V)
5 V (typ.), 30 mA (max)
A capacitor for oscillation prevention is connected to the V
refout
output.
Description
High-active
8
Vdc
Motor supply voltage
detection
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
TR
Idc
Gin
Gout
PH
LPF/LA
UL
Vrefout
HUP
HUM
HVP
HVM
HWP
HWM
FGC
Motor restrained detection
Current limit control input
Gain setting
Peak hold
Low pass filter/
Input lead angle setting
Upper limit of lead angle
Reference voltage output
Position signal input, U
Position signal input, V
Gate block protection is activated when UVW = 111 or 000. These inputs have internal
pull-up resistors and digital filters.
Position signal input, W
H or OPEN: FG = 3 ppr
FG output signal switch input L: FG = 1 ppr
The FGC input has an internal pull-up resistor.
Clockwise/counterclockwise
rotation
FG signal output
Oscillator resistor
Oscillator capacitor
Ground
Voltage command input
Power supply
L: Clockwise rotation
H: Counterclockwise rotation
The CW/CCW input has an internal pull-up resistor.
FGC = H or OPEN: 3 ppr output.
FGC = L: 1 ppr output.
CR oscillation
―
The V
SP
input has an internal pull down resistor.
V
CC
= 6 to 16.5 V
ppr: one pulse per electrical angle
24
25
26
27
28
29
30
CW/CCW
FG
OSC/R
OSC/C
GND
V
SP
V
CC
4
2015-4-3
TB6634FNG
Input/Output Equivalent Circuits
Equivalent circuit diagrams may be partially omitted or simplified for explanatory purposes.
Pin
Symbol
Input/Output Signal
Internal Circuit
V
refout
V
refout
Analog
Hysteresis: ±10.5 mV (typ.)
Built-in digital filter
4 CLK@f
OSC
Position signal input U
Position signal input V
Position signal input W
HUP
HUM
HVP
HVM
HWP
HWM
Clockwise/counterclockwise
rotation
CW/CCW
Digital
H: V
refout
-1 V (min)
L: 0.8 V (max)
H/open: Counterclockwise (CCW)
L: Clockwise (CW)
Hysteresis comparator
Hysteresis ± 0.1 V (typ.)
Built-in digital filter 4 CLK@f
OSC
V
refout
V
refout
100 kΩ
2.0 kΩ
V
refout
100
Ω
100 kΩ
V
refout
V
refout
100 kΩ
2.0 kΩ
Vrefout
150 kΩ
4.0 V
100
Ω
2.5 V
Abnormal detection
RES
H: 2.6 V (typ.) or more.
L: 2.4 V (typ.) or less.
H: Runs the motor
L/open: Stops the motor (The
commutation output signals are
forced Low.)
Digital
H: V
refout
-1 V (min)
L: 0.8 V (max)
H/open: FG = 3 ppr
L: FG = 1 ppr
FG output signal switch input
FGC
Voltage command signal
V
SP
Analog
Input range: 0 to 10 V
Motor supply voltage
detection
V
dc
Adjusting the number of steps
addition of the lead angle by input
voltage (2-bit AD)
Hysteresis ± 0.1 V (typ.)
Over voltage detection
Hysteresis ± 0.1 V (typ.)
Built-in digital filter4 CLK@f
OSC
4.1 V (typ.) or more: Stops the
motor.
(Gate block protection)
3.9 V (typ.) or less: Runs the motor.
5
2015-4-3
TI Technology Forum
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