TB6560AFG Toshiba, TB6560AFG Datasheet - Page 9

• Manufacturer Part Number: TB6560AFG
• Manufacturer: Toshiba

Specifications of TB6560AFG

• Function: Driver
• Vopmax (vm*): 34V (40V)
• Io (lpeak): 1.5A (2.5A)
• Excitation: 1/16 step
• I/f: CLK input
• Mixed Decay Mode: included
• Package: THQFP64
• Rohs Compatible†: yes

Functional Descriptions
1. Excitation Mode Settings
2. Function Table (Relationship Between Inputs and Output Modes)
X: Don’t care
3. Initial Mode
4. Decay Mode Settings
Excitation Mode
2W1-2-phase
4W1-2-phase
CLK
1-2-phase
X
X
2-phase
The excitation mode can be selected from the following four modes using the M1 and M2 inputs. (The
2-phase excitation mode is selected by default since both M1 and M2 have internal pull-down resistors.)
When the ENABLE pin is Low, outputs are off. When the RESET pin is Low, the outputs are put in the
Initial mode as shown in the table below. In this mode, the states of the CLK and CW/CCW pins are
don’t-cares.
When RESET is asserted, phase currents in each excitation mode are as follows. At this time, the M
goes Low (open-drain connection).
It takes approximately four OSC cycles for discharging a current in PWM mode. The 25 % decay mode is
created by inducing decay during the last cycle in Fast Decay mode; the 50 % Decay mode is created by
inducing decay during the last two cycles in Fast Decay mode; and the 100 % Decay mode is created by
inducing decay during all four cycles in Fast Decay mode.
Since the DCY1 and DCY2 pins have internal pull-down resistors, the Normal mode is selected when DCY1
and DCY2 are undriven.
DCY2
M2
H
H
H
H
L
L
L
L
CW/CCW
Inputs
H
L
X
X
Inputs
A-Phase Current
RESET
100 %
100 %
100 %
100 %
DCY1
M1
H
H
H
H
X
H
H
L
L
L
L
L
ENABLE
H
H
H
L
B-Phase Current
Current Decay Setting
− 100 %
0 %
0 %
0 %
4W1-2-phase
2W1-2-phase
100 % Decay
25 % Decay
50 % Decay
Normal 0 %
(Excitation)
1-2-phase
2-phase
Mode
Output Mode
Initial mode
CCW
CW
Z
9
TB6560AHQ/AFG
2011-01-18
O
pin