TB62217AFG Datasheet, PDF (1/61 Pages) Toshiba Semiconductor – PWM drive Stepping Motor Driver / Brush DC Motor Driver Selectable, DC-DC Converter and Reset function IC

TB62217AFG
TOSHIBA BiCD Process Integrated Circuit Silicon Monolithic
TB62217AFG
PWM drive Stepping Motor Driver / Brush DC Motor Driver Selectable, DC-DC Converter
and Reset function IC
The TB62217FG is a dual stepping motor driver driven by PWM
chopper micro step, with 3- channel step-down DC-DC converters and
an external-IC reset function.
To drive a two-phase bipolar-type stepping motor, a 16-bit latch and
a 16-bit shift register are built into the IC. The IC is suitable for
driving stepping motors with low-torque ripple in a highly efficient
manner. In addition, a signal axis can be switched to serve as a PWM
driver for two DC motors.
By equipping the stepping motor driver with Selectable Mixed
Decay Mode for switching the attenuation ratio during chopping, and
also equipping it with a DC-DC converter, it is possible for the IC to
supply external voltage.
With a built-in timer that starts running when the IC is supplied
with power, the IC can be used in resetting (initializing) external
devices.
Features
• The following motor combinations can be used.
Stepper
DC Large DC (L) DC Small DC (S)
(1) Dual motors
(2) Single motor
(3) Single motor
(4)
⎯
(5)
⎯
(6)
⎯
⎯
Single motor
⎯
Single motor
Dual motors
⎯
⎯
⎯
Dual motors
Dual motors
⎯
Quadruple motors
Weight: 0.45 g (typ.)
Note Hereafter, DC Large will be referred to as DC (L) and DC Small will be referred to as DC (S).
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The large current standard is achieved by shorting a small current H-Bridge across two ICs. In addition, if the
thermal setting is designed to be within the prescribed thermal range, the initial torque current can be used as the
normal operating current.
1
2004-11-12