TB6613FTG Toshiba, TB6613FTG Datasheet - Page 8

• Manufacturer Part Number: TB6613FTG
• Manufacturer: Toshiba

Specifications of TB6613FTG

• Function: Driver
• Vopmax (vm*): 5.5V (6V)
• Io (lpeak): 0.6A (0.8A)
• Channel: 8-ch
• I/f: serial input
• Option: 6bit u-Step STM drive x2
• Package: VQON44
• Rohs Compatible†: yes

Microstep Control: Channels A, B, C and D
period by counting the number of rising edges of the internal clock signal (divided clock of MCK).
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In PWM constant-current mode, when the TB6613FTG generates a PWM signal, it measures a constant turn-off
Pulse clock control: The TB6613FTG steps up the current at each rising edge of the clock input to the
µStep modes: Selectable from the following two modes:
Enable control: Setting PWMB/EN1 (for channels A and B) or PWMD/EN2 (for channels C and D) High and Low
Current decay modes: In STM µStep mode, the motor current recirculates back to the power supply in
Electrical degree monitor: As the output current increases or decreases in steps with the CK input, a negative
PWM chopping frequency: The PWM signal is generated by dividing the external MCK signal by up to 31, as
Turn-off period: The turn-off period is selectable from 2, 4, 6 and 8 cycles of the internal clock signal, which is
(1 MHz)
DATA
MCK
CK
LD
1-bit mode: 8 steps per full cycle
6-bit mode: resolution = 256 steps per full cycle
Decoder
Divider
enables and disables motor excitation.
ENn = 1: Excitation enabled; ENn = 0: Excitation disabled
generated by dividing MCK internally.
Serial
1/1 to
5-bit
1/31
(0.3 V)
VREF
DAC
2-bit
PWMA/CK1 (for channels A and B) or PWMC/CK2 (for channels C and D) pin.
(Current step-ups actually occur synchronous to the internal clock signal derived from
MCK.)
Fast-Decay mode when the Vref level changes during current step-down. The current
decay rate is selectable from four modes.
pulse is generated from the MO1 (or MO2) pin at every 90 or 360 electrical degrees.
programmed in a 5-bit register.
PWMA
/CK1
Excitation Enable,
µstep decoder
Ph. B
64
63
62
CW/CCW,
2
1
6-bit DAC
PWMB
PWM
/EN1
Ph. A
64
63
62
2
1
MO1
8
driver
driver
PWM
PWM
timer
timer
Pre-
Pre-
VM
H-bridge
H-bridge
A
B
PGND
TB6613FTG
M
M
2008-06-27
Phase B
Phase A