Electronic Components Datasheet Search
  English  ▼

Delete All
ON OFF
ALLDATASHEET.COM

X  

Preview PDF Download HTML

TB6556FG Datasheet(PDF) 11 Page - Toshiba Semiconductor

Part No. TB6556FG
Description  3-Phase Full-Wave Sine-Wave PWM Brushless Motor Controller
Download  22 Pages
Scroll/Zoom Zoom In 100% Zoom Out
Maker  TOSHIBA [Toshiba Semiconductor]
Homepage  http://www.semicon.toshiba.co.jp/eng
Logo TOSHIBA - Toshiba Semiconductor

TB6556FG Datasheet(HTML) 11 Page - Toshiba Semiconductor

Back Button TB6556FG_12 Datasheet HTML 7Page - Toshiba Semiconductor TB6556FG_12 Datasheet HTML 8Page - Toshiba Semiconductor TB6556FG_12 Datasheet HTML 9Page - Toshiba Semiconductor TB6556FG_12 Datasheet HTML 10Page - Toshiba Semiconductor TB6556FG_12 Datasheet HTML 11Page - Toshiba Semiconductor TB6556FG_12 Datasheet HTML 12Page - Toshiba Semiconductor TB6556FG_12 Datasheet HTML 13Page - Toshiba Semiconductor TB6556FG_12 Datasheet HTML 14Page - Toshiba Semiconductor TB6556FG_12 Datasheet HTML 15Page - Toshiba Semiconductor Next Button
Zoom Inzoom in Zoom Outzoom out
 11 / 22 page
background image
TB6556FG
2012-10-22
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 frequency 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 = fOSC / (212  32  6)
5 Hz or higher: When driven by sine-wave PWM (180° turn-on);
when fOSC = 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.
Ve voltage command signal function and function to stabilize bootstrap voltage
(1)
When the voltage command signal is input at Ve ≤ 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
TOFF
HIGH or OPEN
8/fOSC
1.9
μs
LOW
16/fOSC
3.8
μs
TOFF values above are obtained when fOSC = 4.19 MHz.
fOSC = reference clock (ceramic oscillation)
(1)
(2)
(3)
100%
2.1 V
1.0 V
5.4 V
Ve
PWM Duty


Html Pages

1  2  3  4  5  6  7  8  9  10  11  12  13  14  15  16  17  18  19  20  21  22 


Datasheet Download

Go To PDF Page


Link URL




Privacy Policy
ALLDATASHEET.COM
Does ALLDATASHEET help your business so far?  [ DONATE ]  

About Alldatasheet   |   Advertisement   |   Datasheet Upload   |   Contact us   |   Privacy Policy   |   Alldatasheet API   |   Link Exchange   |   Manufacturer List
All Rights Reserved© Alldatasheet.com


Mirror Sites
English : Alldatasheet.com  |   English : Alldatasheet.net  |   Chinese : Alldatasheetcn.com  |   German : Alldatasheetde.com  |   Japanese : Alldatasheet.jp
Russian : Alldatasheetru.com  |   Korean : Alldatasheet.co.kr  |   Spanish : Alldatasheet.es  |   French : Alldatasheet.fr  |   Italian : Alldatasheetit.com
Portuguese : Alldatasheetpt.com  |   Polish : Alldatasheet.pl  |   Vietnamese : Alldatasheet.vn