TB6559FG Toshiba, TB6559FG Datasheet - Page 7

• Manufacturer Part Number: TB6559FG
• Manufacturer: Toshiba

Specifications of TB6559FG

• Functions: Driver
• Vopmax (vm*): 30V (50V)
• Io (lpeak): 1A (2.5A)
• Channel: 1-ch
• Pwm Drive: direct PWM & constant current PWM
• Package: HSOP16
• Rohs Compatible†: yes

Output Operation
high-side and low-side transistors in the bridge output, a dead time of 300 ns (design target value) is generated
in the IC when transistors switch from on to off, or vice versa.
time externally. A dead time is also provided internally when the motor operation mode switches between CW
and CCW, and between CW (CCW) and short brake, thereby eliminating the need for external dead time
insertion.
In either mode, the motor operating mode changes between CW/CCW and short brake alternately.
To eliminate shoot-through current that flows from supply to ground due to the simultaneous conduction of
The shoot-through protection permits a synchronous rectification PWM operation without controlling the dead
OUT1
•
Control mode selection
Either constant-current or direct PWM control can be selected by the V
The constant-current feature is disabled in direct PWM mode.
Constant-current PWM control: V
Direct PWM control: V
PWM ON
M
t1
Output voltage
waveform
OUT1
(OUT1)
PWM OFF → ON
t4 = 300 ns (typ.)
V
RS
CC
ref
M
= 4.5 to 5.5 V
OUT1
t1
t2
ref
V
RS
PWM ON → OFF
t2 = 300 ns (typ.)
CC
= 0 to 3 V
t3
M
7
OUT1
t4
t5
V
RS
CC
PWM ON
M
t5
OUT1
ref
input voltage as follows:
V
RS
CC
PWM OFF
V
GND
CC
M
t3
TB6559FG
2009-04-14
V
RS
CC