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PDF TB6537 Data sheet ( Hoja de datos )
| Número de pieza | TB6537 | |
| Descripción | 3-Phase Full-Wave Sensorless Controller for Brushless DC Motors | |
| Fabricantes | Toshiba | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de TB6537 (archivo pdf) en la parte inferior de esta página. Total 15 Páginas | ||
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TOSHIBA CMOS Integrated Circuit Silicon Monolithic
TB6537P,TB6537F
3-Phase Full-Wave Sensorless Controller for Brushless DC Motors
TB6537P/F is a 3-phase full-wave sensorless controller for
brushless DC motors. It is capable of controlling voltage by PWM
signal input. When combined with various drive circuits it can be
used for various types of motors.
Features
· 3-phase full-wave sensorless drive
· PWM control (PWM signal is supplied from external sources.)
· Turn-on signal output current: 20 mA
· Overcurrent protection function
· Forward/reverse modes
· Lead angle control function (0, 7.5, 15 and 30 degrees)
· Built-in lap turn-on function
· Two types of PWM output (upper PWM and upper/lower
alternate PWM)
TB6537P
TB6537F
TB6537P/F
Weight
DIP18-P-300-2.54D: 1.47 g (typ.)
SSOP24-P-300-1.00: 0.32 g (typ.)
1 2003-02-20
1 page  
TB6537P/F
Pin No.
Symbol
TB6537P TB6537F
I/O
Description
¾ 20 NC ¾ Not connected
W-phase upper turn-on signal output pin
15 21 OUT_WP O · W-phase winding wire positive ON/OFF switching pin
· ON: Low, OFF: High
W-phase lower turn-on signal output pin
16 22 OUT_WN O · W-phase winding wire negative ON/OFF switching pin
· ON: High, OFF: Low
Overcurrent signal input pin
· High on this pin can put constraints on the turn-on signal which is performing PWM
17 23 OC I
control.
· Built-in pull-up resistor
Positional signal input pin
18 24 WAVE I · Inputs majority logic synthesis signal of three-phase pin voltage.
· Built-in pull-up resistor
Functional Description
1. Sensorless Drive
On receipt of PWM signal start instruction turn-in signal for forcible commutation (commutation
irrespective of the motor’s rotor position) is output and the motor starts to rotate. The motor’s rotation
causes induced voltage on winding wire pin for each phase.
When signals indicating positive or negative for pin voltage (including induced voltage) for each phase
are input on respective positional signal input pin, the turn-on signal for forcible commutation is
automatically switched to turn-on signal for positional signal (induced voltage).
Thereafter turn-on signal is formed according to the induced voltage contained in the pin voltage so as to
drive the brushless DC motor.
2. Starting commutation frequency (resonator pin and counter bit select pin)
The forcible commutation frequency at the time of start is determined by the resonator’s frequency and
the number of counter bit (within the IC).
Starting commutation frequency fst = Resonator frequency fxt/(6 ´ 2 (bit + 3)) bit = 14
The forcible commutation frequency at the time of start can be adjusted using inertia of the motor and
load.
· The forcible commutation frequency should be set higher as the number of magnetic poles increases.
· The forcible commutation frequency should be set lower as the inertia of the load increases.
3. PWM Control
PWM signal can be reflected in turn-on signal by supplying PWM signal from external sources.
The frequency of the PWM signal shoud be set adequately high with regard to the electrical frequency of
the motor and in accordance to the switching characteristics of the drive circuit.
Because positional detection is performed in synchronization with the rising edges of PWM signal,
positional detection cannot be performed with 0% duty or 100% duty.
Duty (max)
Duty (min)
250 ns
250 ns
The voltage applied to the motor is duty 100% because of the storage time of the drive circuit even if the
duty is 99%.
5 2003-02-20
5 Page 
Electrical Characteristics (Ta = 25°C, VDD = 5 V)
Characteristics
Static power supply current
Dynamic power supply current
Input current
Input voltage
Input hysteresis voltage
Output voltage
Output leak current
Output delay time
Symbol
IDD
IDD (opr)
IIN-1 (H)
IIN-1 (L)
IIN-2 (H)
IIN-2 (L)
VIN (H)
VIN (L)
VH
VO-1 (H)
VO-1 (L)
VO-2 (H)
VO-2 (L)
IL (H)
IL (L)
tpLH
tpHL
Test
Circuit
Test Condition
¾ PWM = H, XTin = H
¾ PWM = 50% Duty, XTin = 4 MHz
¾
VIN = 5 V, PWM, OC, WAVE_U,
SEL_LAP
¾
VIN = 0 V, PWM, OC, WAVE_U,
SEL_LAP
¾
VIN = 5 V, CW_CCW, LA0, LA1,
SEL_OUT
¾
VIN = 0 V, CW_CCW, LA0, LA1,
SEL_OUT
PWM, OC, SEL_LAP, CW_CCW
¾
WAVE_U, LA0, LA1, SEL_OUT
PWM, OC, SEL_LAP, CW_CCW
¾
WAVE_U, LA0, LA1, SEL_OUT
PWM, OC, SEL_LAP, CW_CCW
¾
WAVE_U, LA0, LA1, SEL_OUT
¾ IOH = -1 mA
OUT_UP, OUT_VP, OUT_WP
IOH = 20 mA
¾
OUT_UP, OUT_VP, OUT_WP
IOH = -20 mA
¾
OUT_UN, OUT_VN, OUT_WN
IOH = 1 mA
¾
OUT_UN, OUT_VN, OUT_WN
VDD = 5.5 V, VOUT = 0 V
¾ OUT_UP, OUT_VP, OUT_WP
OUT_UN, OUT_VN, OUT_WN
VDD = 5.5 V, VOUT = 5.5 V
¾ OUT_UP, OUT_VP, OUT_WP
OUT_UN, OUT_VN, OUT_WN
¾ PWM-Output
TB6537P/F
Min Typ. Max Unit
¾ 0.1 0.3 mA
¾1
3 mA
¾0
1
-75 -50
¾ 50
¾
75
mA
-1 0 ¾
3.5 ¾
5
GND ¾
1.5
V
¾ 0.6 ¾
V
4.3 ¾ VDD
GND ¾
0.5
V
4.0 ¾ VDD
GND ¾
0.5
¾ 0 10
mA
¾ 0 10
¾ 0.5
1
ms
¾ 0.5
1
11 2003-02-20
11 Page | ||
| Páginas | Total 15 Páginas | |
| PDF Descargar | [ Datasheet TB6537.PDF ] | |
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