TB6586FG Toshiba, TB6586FG Datasheet - Page 12

• Manufacturer Part Number: TB6586FG
• Manufacturer: Toshiba

Specifications of TB6586FG

• Function: Controller
• Vopmax (vm*): 10V (18V)
• Io (lpeak): 2mA
• Sinusoidal Current Wave: 150 degree drive
• Sensor-less: no
• Speed Feedback Loop: no
• Package: SSOP24
• Rohs Compatible†: yes

8. Protecting input pin
(1)
(2)
(3)
(4)
(5)
Overcurrent protection (Pin RS)
When the DC link current exceeds the internal reference voltage, this pin performs gate block
protection. Overcurrent protection is restored for each carrier frequency.
The pin is equipped with a filter (analog filter = 0.5 µs (typ.)) that prevents malfunctioning due to
external noise.
Position detection signal error protection
When the position detection signals are either all High, Low or Open, all the output is turned OFF
(all phases Low). Anything else results in a restart.
Low power voltage protection (V
If the operation voltage range is exceeded when the power is being turned on or off, all the output is
turned Low to prevent short circuit damage to the power element. Also, if 2.1 V or higher is input via
the V
after a refresh operation (1.5 ms (typ.)) is performed. However, operations cannot be guaranteed
during a power restoration as the circuitry will be unstable when the power is turned on.
Output pulse width restriction
To prevent damage to the output driver (externally attached), the drive output signals (UH, VH, WH,
UL, VL, WL) are restricted from being output at a pulse width of 1 µs or less.
Reset circuit
When 1.7 V (typ.) or more is input to the RESET pin, a reset will be performed with all output phases
being turned off (i.e., all phases Low). Output is also turned off if 6.35 V (typ.) or more is supplied to
the CW/CCW pin. However, do not use this method as the restoration obtained from it is unstable.
•
•
RESET pin: Output off reset
All output phases are turned Low and the externally connected power element is stopped. When
1.7 V or less is input, the power is restored. During the restoration, if 2.1 V or more is not input to
the V
performed (1.5 ms (typ.)). Normal drive will then be restored.
During the reset, the internal counter continues to operate and the FG signal continues to be
output.
CW/CCW pin: System reset
All output phases are turned Low and the externally connected power element is stopped.
Restoration takes place at an input of 6.35 V (typ.). However, operation after this kind of system
reset is unstable.
TB6586FG: During a system reset, the FG signal is output in compliance with the U-phase Hall
signal.
TB6586AFG: The FG signal is not output during a system reset.
SP
pin, and if the motor is not rotating (Hall signal = 5 Hz or less), then normal drive is restored
SP
Power supply
voltage
Turn-on signal
pin, and if the motor is not rotating (Hall signal = 5 Hz or less), a refresh operation will be
Low output
6.0 V (typ.)
CC
power monitor)
12
Output
5.0 V (typ.)
Low output
V
TB6586FG/AFG
GND
V
CC
M
2007-08-03